From 60c1dd256072f14d0b2f503ce358e2a35a4db8e0 Mon Sep 17 00:00:00 2001 From: Ashish Amarnath Date: Fri, 13 Dec 2019 12:50:57 -0800 Subject: [PATCH 1/7] generate kubebuilder project Signed-off-by: Adnan Abdulhussein --- .gitignore | 24 + Dockerfile | 27 ++ Makefile | 80 ++++ PROJECT | 7 + README.md | 5 + api/v1alpha1/executionhook_types.go | 176 ++++++++ api/v1alpha1/groupversion_info.go | 35 ++ api/v1alpha1/zz_generated.deepcopy.go | 252 +++++++++++ config/certmanager/certificate.yaml | 25 ++ config/certmanager/kustomization.yaml | 5 + config/certmanager/kustomizeconfig.yaml | 16 + .../crd/bases/apps.k8s.io_executionhooks.yaml | 203 +++++++++ config/crd/kustomization.yaml | 21 + config/crd/kustomizeconfig.yaml | 17 + .../cainjection_in_executionhooks.yaml | 8 + .../patches/webhook_in_executionhooks.yaml | 17 + config/default/kustomization.yaml | 74 ++++ config/default/manager_auth_proxy_patch.yaml | 25 ++ config/default/manager_webhook_patch.yaml | 23 + config/default/webhookcainjection_patch.yaml | 15 + config/manager/kustomization.yaml | 2 + config/manager/manager.yaml | 39 ++ config/prometheus/kustomization.yaml | 2 + config/prometheus/monitor.yaml | 15 + config/rbac/auth_proxy_role.yaml | 13 + config/rbac/auth_proxy_role_binding.yaml | 12 + config/rbac/auth_proxy_service.yaml | 14 + config/rbac/executionhook_editor_role.yaml | 26 ++ config/rbac/executionhook_viewer_role.yaml | 20 + config/rbac/kustomization.yaml | 11 + config/rbac/leader_election_role.yaml | 32 ++ config/rbac/leader_election_role_binding.yaml | 12 + config/rbac/role.yaml | 28 ++ config/rbac/role_binding.yaml | 12 + .../samples/apps_v1alpha1_executionhook.yaml | 11 + config/webhook/kustomization.yaml | 6 + config/webhook/kustomizeconfig.yaml | 25 ++ config/webhook/manifests.yaml | 0 config/webhook/service.yaml | 12 + controllers/executionhook_controller.go | 89 ++++ controllers/suite_test.go | 79 ++++ go.mod | 17 + go.sum | 411 ++++++++++++++++++ hack/boilerplate.go.txt | 14 + main.go | 82 ++++ 45 files changed, 2039 insertions(+) create mode 100644 .gitignore create mode 100644 Dockerfile create mode 100644 Makefile create mode 100644 PROJECT create mode 100644 api/v1alpha1/executionhook_types.go create mode 100644 api/v1alpha1/groupversion_info.go create mode 100644 api/v1alpha1/zz_generated.deepcopy.go create mode 100644 config/certmanager/certificate.yaml create mode 100644 config/certmanager/kustomization.yaml create mode 100644 config/certmanager/kustomizeconfig.yaml create mode 100644 config/crd/bases/apps.k8s.io_executionhooks.yaml create mode 100644 config/crd/kustomization.yaml create mode 100644 config/crd/kustomizeconfig.yaml create mode 100644 config/crd/patches/cainjection_in_executionhooks.yaml create mode 100644 config/crd/patches/webhook_in_executionhooks.yaml create mode 100644 config/default/kustomization.yaml create mode 100644 config/default/manager_auth_proxy_patch.yaml create mode 100644 config/default/manager_webhook_patch.yaml create mode 100644 config/default/webhookcainjection_patch.yaml create mode 100644 config/manager/kustomization.yaml create mode 100644 config/manager/manager.yaml create mode 100644 config/prometheus/kustomization.yaml create mode 100644 config/prometheus/monitor.yaml create mode 100644 config/rbac/auth_proxy_role.yaml create mode 100644 config/rbac/auth_proxy_role_binding.yaml create mode 100644 config/rbac/auth_proxy_service.yaml create mode 100644 config/rbac/executionhook_editor_role.yaml create mode 100644 config/rbac/executionhook_viewer_role.yaml create mode 100644 config/rbac/kustomization.yaml create mode 100644 config/rbac/leader_election_role.yaml create mode 100644 config/rbac/leader_election_role_binding.yaml create mode 100644 config/rbac/role.yaml create mode 100644 config/rbac/role_binding.yaml create mode 100644 config/samples/apps_v1alpha1_executionhook.yaml create mode 100644 config/webhook/kustomization.yaml create mode 100644 config/webhook/kustomizeconfig.yaml create mode 100644 config/webhook/manifests.yaml create mode 100644 config/webhook/service.yaml create mode 100644 controllers/executionhook_controller.go create mode 100644 controllers/suite_test.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 hack/boilerplate.go.txt create mode 100644 main.go diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..d97ffc5 --- /dev/null +++ b/.gitignore @@ -0,0 +1,24 @@ + +# Binaries for programs and plugins +*.exe +*.exe~ +*.dll +*.so +*.dylib +bin + +# Test binary, build with `go test -c` +*.test + +# Output of the go coverage tool, specifically when used with LiteIDE +*.out + +# Kubernetes Generated files - skip generated files, except for vendored files + +!vendor/**/zz_generated.* + +# editor and IDE paraphernalia +.idea +*.swp +*.swo +*~ diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..74eb9d7 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,27 @@ +# Build the manager binary +FROM golang:1.13 as builder + +WORKDIR /workspace +# Copy the Go Modules manifests +COPY go.mod go.mod +COPY go.sum go.sum +# cache deps before building and copying source so that we don't need to re-download as much +# and so that source changes don't invalidate our downloaded layer +RUN go mod download + +# Copy the go source +COPY main.go main.go +COPY api/ api/ +COPY controllers/ controllers/ + +# Build +RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on go build -a -o manager main.go + +# Use distroless as minimal base image to package the manager binary +# Refer to https://github.com/GoogleContainerTools/distroless for more details +FROM gcr.io/distroless/static:nonroot +WORKDIR / +COPY --from=builder /workspace/manager . +USER nonroot:nonroot + +ENTRYPOINT ["/manager"] diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..cf99ca1 --- /dev/null +++ b/Makefile @@ -0,0 +1,80 @@ + +# Image URL to use all building/pushing image targets +IMG ?= controller:latest +# Produce CRDs that work back to Kubernetes 1.11 (no version conversion) +CRD_OPTIONS ?= "crd:trivialVersions=true" + +# Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set) +ifeq (,$(shell go env GOBIN)) +GOBIN=$(shell go env GOPATH)/bin +else +GOBIN=$(shell go env GOBIN) +endif + +all: manager + +# Run tests +test: generate fmt vet manifests + go test ./... -coverprofile cover.out + +# Build manager binary +manager: generate fmt vet + go build -o bin/manager main.go + +# Run against the configured Kubernetes cluster in ~/.kube/config +run: generate fmt vet manifests + go run ./main.go + +# Install CRDs into a cluster +install: manifests + kustomize build config/crd | kubectl apply -f - + +# Uninstall CRDs from a cluster +uninstall: manifests + kustomize build config/crd | kubectl delete -f - + +# Deploy controller in the configured Kubernetes cluster in ~/.kube/config +deploy: manifests + cd config/manager && kustomize edit set image controller=${IMG} + kustomize build config/default | kubectl apply -f - + +# Generate manifests e.g. CRD, RBAC etc. +manifests: controller-gen + $(CONTROLLER_GEN) $(CRD_OPTIONS) rbac:roleName=manager-role webhook paths="./..." output:crd:artifacts:config=config/crd/bases + +# Run go fmt against code +fmt: + go fmt ./... + +# Run go vet against code +vet: + go vet ./... + +# Generate code +generate: controller-gen + $(CONTROLLER_GEN) object:headerFile=./hack/boilerplate.go.txt paths="./..." + +# Build the docker image +docker-build: test + docker build . -t ${IMG} + +# Push the docker image +docker-push: + docker push ${IMG} + +# find or download controller-gen +# download controller-gen if necessary +controller-gen: +ifeq (, $(shell which controller-gen)) + @{ \ + set -e ;\ + CONTROLLER_GEN_TMP_DIR=$$(mktemp -d) ;\ + cd $$CONTROLLER_GEN_TMP_DIR ;\ + go mod init tmp ;\ + go get sigs.k8s.io/controller-tools/cmd/controller-gen@v0.2.4 ;\ + rm -rf $$CONTROLLER_GEN_TMP_DIR ;\ + } +CONTROLLER_GEN=$(GOBIN)/controller-gen +else +CONTROLLER_GEN=$(shell which controller-gen) +endif diff --git a/PROJECT b/PROJECT new file mode 100644 index 0000000..2b98c44 --- /dev/null +++ b/PROJECT @@ -0,0 +1,7 @@ +domain: k8s.io +repo: sigs.k8s.io/execution-hook +resources: +- group: apps + kind: ExecutionHook + version: v1alpha1 +version: "2" diff --git a/README.md b/README.md index 43a5c8d..432deba 100644 --- a/README.md +++ b/README.md @@ -3,6 +3,11 @@ This repo contains `ExecutionHook` CRDs for dynamically executing user’s commands in pods/containers and an `ExecutionHookController` to manage the hook's lifecycle. +## Usage + +Exection Hook uses the [Kubebuilder framework](https://github.com/kubernetes-sigs/kubebuilder). +See the [Kubebuilder documentation](https://book.kubebuilder.io/introduction.html) for building, running and testing the project. + ## Community, discussion, contribution, and support Learn how to engage with the Kubernetes community on the [community page](http://kubernetes.io/community/). diff --git a/api/v1alpha1/executionhook_types.go b/api/v1alpha1/executionhook_types.go new file mode 100644 index 0000000..5d5acd5 --- /dev/null +++ b/api/v1alpha1/executionhook_types.go @@ -0,0 +1,176 @@ +/* + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package v1alpha1 + +import ( + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" +) + +// EDIT THIS FILE! THIS IS SCAFFOLDING FOR YOU TO OWN! +// NOTE: json tags are required. Any new fields you add must have json tags for the fields to be serialized. + +// ExecutionHookSpec defines the desired state of ExecutionHook +// HookActionName is copied to ExecutionHookSpec by the controller such as +// the Snapshot Controller. +type ExecutionHookSpec struct { + // INSERT ADDITIONAL SPEC FIELDS - desired state of cluster + // Important: Run "make" to regenerate code after modifying this file + + // PodSelection defines how to select pods and containers to run + // the executionhook. If multiple pod/containers are selected, the action will executed on them + // asynchronously. If execution ordering is required, caller has to implement the logic and create + // different hooks in order. + // This field is required. + PodSelection PodSelection `json:"podSelection" protobuf:"bytes,1,opt,name=podSelection"` + + // Name of the HookAction. This is required. + ActionName string `json:"actionName" protobuf:"bytes,2,opt,name=actionName"` +} + +// PodSelection contains two fields, PodContainerNamesList and PodContainerSelector, +// where one of them must be defined so that the hook controller knows where to +// run the hook. +type PodSelection struct { + // PodContainerNamesList lists the pods/containers on which the ExecutionHook + // should be executed. If not specified, the ExecutionHook controller will find + // all pods and containers based on PodContainerSelector. + // If both PodContainerNamesList and PodContainerSelector are not + // specified, the ExecutionHook cannot be executed and it will fail. + // +optional + PodContainerNamesList []PodContainerNames `json:"podContainerNamesList,omitempty" protobuf:"bytes,1,rep,name=podContainerNamesList"` + + // PodContainerSelector is for hook controller to find pods and containers + // based on the pod label selector and container names + // If PodContainerNamesList is specified, this field will not be used. + // +optional + PodContainerSelector *PodContainerSelector `json:"podContainerSelector,omitempty" protobuf:"bytes,2,opt,name=podContainerSelector"` +} + +// PodContainerNames lists the containers the ExecutionHook should be executed +// on in a Pod. +type PodContainerNames struct { + // This field is required + PodName string `json:"podName" protobuf:"bytes,1,opt,name=podName"` + + // +optional + ContainerNames []string `json:"containerNames,omitempty" protobuf:"bytes,2,rep,name=containerNames"` +} + +// PodContainerSelector defines the selector and containers the ExecutionHook +// should be executed on. +type PodContainerSelector struct { + // PodSelector specifies a label query over a set of pods. + // +optional + PodSelector *metav1.LabelSelector `json:"podSelector,omitempty" protobuf:"bytes,1,opt,name=podSelector"` + + // If specified, controller only select the containers that are listed from the selected pods based on PodSelector. + // Otherwise, all containers of the pods will be selected + // +optional + ContainerList []string `json:"containerList,omitempty" protobuf:"bytes,2,rep,name=containerList"` +} + +// ExecutionHookStatus defines the observed state of ExecutionHook +type ExecutionHookStatus struct { + // INSERT ADDITIONAL STATUS FIELD - define observed state of cluster + // Important: Run "make" to regenerate code after modifying this file + + // This is a list of ContainerExecutionHookStatus, with each status representing + // information about how hook is executed in a container, including pod name, + // container name, ActionTimestamp, ActionSucceed, etc. + // +optional + HookStatuses []ContainerExecutionHookStatus `json:"containerExecutionHookStatuses,omitempty" protobuf:"bytes,1,rep,name=containerExecutionHookStatuses"` +} + +// ContainerExecutionHookStatus represents the current state of a hook for a specific +// container in a pod +type ContainerExecutionHookStatus struct { + // This field is required + PodName string `json:"podName" protobuf:"bytes,1,opt,name=podName"` + + // This field is required + ContainerName string `json:"containerName" protobuf:"bytes,2,opt,name=containerName"` + + // If not set, it is nil, indicating Action has not started + // If set, it means Action has started at the specified time + // +optional + Timestamp *metav1.Time `json:"actionTimestamp,omitempty" protobuf:"bytes,3,opt,name=actionTimestamp"` + + // Succeed is set to true when the action is executed in the container successfully. + // It will be set to false if the action cannot be executed successfully after + // ActionTimeoutSeconds passes. + // +optional + Succeed *bool `json:"actionSucceed,omitempty" protobuf:"varint,4,opt,name=actionSucceed"` + + // The last error encountered when executing the action. The hook controller might + // update this field each time it retries the execution. + // +optional + Error *HookError `json:"error,omitempty" protobuf:"bytes,5,opt,name=error"` +} + +// HookError describes the error occurred from hook execution. +type HookError struct { + // Type of the error + // This is required + ErrorType ErrorType `json:"errorType" protobuf:"bytes,1,opt,name=errorType"` + + // Error message + // +optional + Message *string `json:"message,omitempty" protobuf:"bytes,2,opt,name=message"` + + // More detailed reason why error happens + // +optional + Reason *string `json:"reason,omitempty" protobuf:"bytes,3,opt,name=reason"` + + // It indicates when the error occurred + // +optional + Timestamp *metav1.Time `json:"timestamp,omitempty" protobuf:"bytes,4,opt,name=timestamp"` +} + +// ErrorType defines the type of error occurred from hook execution. +type ErrorType string + +// More error types could be added, e.g., Forbidden, Unauthorized, AlreadyInProgress, etc. +const ( + // The execution hook times out + Timeout ErrorType = "Timeout" + + // The execution hook fails with an error + Error ErrorType = "Error" +) + +// +kubebuilder:object:root=true + +// ExecutionHook is the Schema for the executionhooks API +type ExecutionHook struct { + metav1.TypeMeta `json:",inline"` + metav1.ObjectMeta `json:"metadata,omitempty"` + + Spec ExecutionHookSpec `json:"spec,omitempty"` + Status ExecutionHookStatus `json:"status,omitempty"` +} + +// +kubebuilder:object:root=true + +// ExecutionHookList contains a list of ExecutionHook +type ExecutionHookList struct { + metav1.TypeMeta `json:",inline"` + metav1.ListMeta `json:"metadata,omitempty"` + Items []ExecutionHook `json:"items"` +} + +func init() { + SchemeBuilder.Register(&ExecutionHook{}, &ExecutionHookList{}) +} diff --git a/api/v1alpha1/groupversion_info.go b/api/v1alpha1/groupversion_info.go new file mode 100644 index 0000000..0ef922c --- /dev/null +++ b/api/v1alpha1/groupversion_info.go @@ -0,0 +1,35 @@ +/* + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// Package v1alpha1 contains API Schema definitions for the apps v1alpha1 API group +// +kubebuilder:object:generate=true +// +groupName=apps.k8s.io +package v1alpha1 + +import ( + "k8s.io/apimachinery/pkg/runtime/schema" + "sigs.k8s.io/controller-runtime/pkg/scheme" +) + +var ( + // GroupVersion is group version used to register these objects + GroupVersion = schema.GroupVersion{Group: "apps.k8s.io", Version: "v1alpha1"} + + // SchemeBuilder is used to add go types to the GroupVersionKind scheme + SchemeBuilder = &scheme.Builder{GroupVersion: GroupVersion} + + // AddToScheme adds the types in this group-version to the given scheme. + AddToScheme = SchemeBuilder.AddToScheme +) diff --git a/api/v1alpha1/zz_generated.deepcopy.go b/api/v1alpha1/zz_generated.deepcopy.go new file mode 100644 index 0000000..29c6052 --- /dev/null +++ b/api/v1alpha1/zz_generated.deepcopy.go @@ -0,0 +1,252 @@ +// +build !ignore_autogenerated + +/* + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// Code generated by controller-gen. DO NOT EDIT. + +package v1alpha1 + +import ( + "k8s.io/apimachinery/pkg/apis/meta/v1" + runtime "k8s.io/apimachinery/pkg/runtime" +) + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *ContainerExecutionHookStatus) DeepCopyInto(out *ContainerExecutionHookStatus) { + *out = *in + if in.Timestamp != nil { + in, out := &in.Timestamp, &out.Timestamp + *out = (*in).DeepCopy() + } + if in.Succeed != nil { + in, out := &in.Succeed, &out.Succeed + *out = new(bool) + **out = **in + } + if in.Error != nil { + in, out := &in.Error, &out.Error + *out = new(HookError) + (*in).DeepCopyInto(*out) + } +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ContainerExecutionHookStatus. +func (in *ContainerExecutionHookStatus) DeepCopy() *ContainerExecutionHookStatus { + if in == nil { + return nil + } + out := new(ContainerExecutionHookStatus) + in.DeepCopyInto(out) + return out +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *ExecutionHook) DeepCopyInto(out *ExecutionHook) { + *out = *in + out.TypeMeta = in.TypeMeta + in.ObjectMeta.DeepCopyInto(&out.ObjectMeta) + in.Spec.DeepCopyInto(&out.Spec) + in.Status.DeepCopyInto(&out.Status) +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExecutionHook. +func (in *ExecutionHook) DeepCopy() *ExecutionHook { + if in == nil { + return nil + } + out := new(ExecutionHook) + in.DeepCopyInto(out) + return out +} + +// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object. +func (in *ExecutionHook) DeepCopyObject() runtime.Object { + if c := in.DeepCopy(); c != nil { + return c + } + return nil +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *ExecutionHookList) DeepCopyInto(out *ExecutionHookList) { + *out = *in + out.TypeMeta = in.TypeMeta + in.ListMeta.DeepCopyInto(&out.ListMeta) + if in.Items != nil { + in, out := &in.Items, &out.Items + *out = make([]ExecutionHook, len(*in)) + for i := range *in { + (*in)[i].DeepCopyInto(&(*out)[i]) + } + } +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExecutionHookList. +func (in *ExecutionHookList) DeepCopy() *ExecutionHookList { + if in == nil { + return nil + } + out := new(ExecutionHookList) + in.DeepCopyInto(out) + return out +} + +// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object. +func (in *ExecutionHookList) DeepCopyObject() runtime.Object { + if c := in.DeepCopy(); c != nil { + return c + } + return nil +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *ExecutionHookSpec) DeepCopyInto(out *ExecutionHookSpec) { + *out = *in + in.PodSelection.DeepCopyInto(&out.PodSelection) +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExecutionHookSpec. +func (in *ExecutionHookSpec) DeepCopy() *ExecutionHookSpec { + if in == nil { + return nil + } + out := new(ExecutionHookSpec) + in.DeepCopyInto(out) + return out +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *ExecutionHookStatus) DeepCopyInto(out *ExecutionHookStatus) { + *out = *in + if in.HookStatuses != nil { + in, out := &in.HookStatuses, &out.HookStatuses + *out = make([]ContainerExecutionHookStatus, len(*in)) + for i := range *in { + (*in)[i].DeepCopyInto(&(*out)[i]) + } + } +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ExecutionHookStatus. +func (in *ExecutionHookStatus) DeepCopy() *ExecutionHookStatus { + if in == nil { + return nil + } + out := new(ExecutionHookStatus) + in.DeepCopyInto(out) + return out +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *HookError) DeepCopyInto(out *HookError) { + *out = *in + if in.Message != nil { + in, out := &in.Message, &out.Message + *out = new(string) + **out = **in + } + if in.Reason != nil { + in, out := &in.Reason, &out.Reason + *out = new(string) + **out = **in + } + if in.Timestamp != nil { + in, out := &in.Timestamp, &out.Timestamp + *out = (*in).DeepCopy() + } +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HookError. +func (in *HookError) DeepCopy() *HookError { + if in == nil { + return nil + } + out := new(HookError) + in.DeepCopyInto(out) + return out +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *PodContainerNames) DeepCopyInto(out *PodContainerNames) { + *out = *in + if in.ContainerNames != nil { + in, out := &in.ContainerNames, &out.ContainerNames + *out = make([]string, len(*in)) + copy(*out, *in) + } +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PodContainerNames. +func (in *PodContainerNames) DeepCopy() *PodContainerNames { + if in == nil { + return nil + } + out := new(PodContainerNames) + in.DeepCopyInto(out) + return out +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *PodContainerSelector) DeepCopyInto(out *PodContainerSelector) { + *out = *in + if in.PodSelector != nil { + in, out := &in.PodSelector, &out.PodSelector + *out = new(v1.LabelSelector) + (*in).DeepCopyInto(*out) + } + if in.ContainerList != nil { + in, out := &in.ContainerList, &out.ContainerList + *out = make([]string, len(*in)) + copy(*out, *in) + } +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PodContainerSelector. +func (in *PodContainerSelector) DeepCopy() *PodContainerSelector { + if in == nil { + return nil + } + out := new(PodContainerSelector) + in.DeepCopyInto(out) + return out +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *PodSelection) DeepCopyInto(out *PodSelection) { + *out = *in + if in.PodContainerNamesList != nil { + in, out := &in.PodContainerNamesList, &out.PodContainerNamesList + *out = make([]PodContainerNames, len(*in)) + for i := range *in { + (*in)[i].DeepCopyInto(&(*out)[i]) + } + } + if in.PodContainerSelector != nil { + in, out := &in.PodContainerSelector, &out.PodContainerSelector + *out = new(PodContainerSelector) + (*in).DeepCopyInto(*out) + } +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PodSelection. +func (in *PodSelection) DeepCopy() *PodSelection { + if in == nil { + return nil + } + out := new(PodSelection) + in.DeepCopyInto(out) + return out +} diff --git a/config/certmanager/certificate.yaml b/config/certmanager/certificate.yaml new file mode 100644 index 0000000..237c937 --- /dev/null +++ b/config/certmanager/certificate.yaml @@ -0,0 +1,25 @@ +# The following manifests contain a self-signed issuer CR and a certificate CR. +# More document can be found at https://docs.cert-manager.io +# WARNING: Targets CertManager 0.11 check https://docs.cert-manager.io/en/latest/tasks/upgrading/index.html for breaking changes +apiVersion: cert-manager.io/v1alpha2 +kind: Issuer +metadata: + name: selfsigned-issuer + namespace: system +spec: + selfSigned: {} +--- +apiVersion: cert-manager.io/v1alpha2 +kind: Certificate +metadata: + name: serving-cert # this name should match the one appeared in kustomizeconfig.yaml + namespace: system +spec: + # $(SERVICE_NAME) and $(SERVICE_NAMESPACE) will be substituted by kustomize + dnsNames: + - $(SERVICE_NAME).$(SERVICE_NAMESPACE).svc + - $(SERVICE_NAME).$(SERVICE_NAMESPACE).svc.cluster.local + issuerRef: + kind: Issuer + name: selfsigned-issuer + secretName: webhook-server-cert # this secret will not be prefixed, since it's not managed by kustomize diff --git a/config/certmanager/kustomization.yaml b/config/certmanager/kustomization.yaml new file mode 100644 index 0000000..bebea5a --- /dev/null +++ b/config/certmanager/kustomization.yaml @@ -0,0 +1,5 @@ +resources: +- certificate.yaml + +configurations: +- kustomizeconfig.yaml diff --git a/config/certmanager/kustomizeconfig.yaml b/config/certmanager/kustomizeconfig.yaml new file mode 100644 index 0000000..90d7c31 --- /dev/null +++ b/config/certmanager/kustomizeconfig.yaml @@ -0,0 +1,16 @@ +# This configuration is for teaching kustomize how to update name ref and var substitution +nameReference: +- kind: Issuer + group: cert-manager.io + fieldSpecs: + - kind: Certificate + group: cert-manager.io + path: spec/issuerRef/name + +varReference: +- kind: Certificate + group: cert-manager.io + path: spec/commonName +- kind: Certificate + group: cert-manager.io + path: spec/dnsNames diff --git a/config/crd/bases/apps.k8s.io_executionhooks.yaml b/config/crd/bases/apps.k8s.io_executionhooks.yaml new file mode 100644 index 0000000..3da9274 --- /dev/null +++ b/config/crd/bases/apps.k8s.io_executionhooks.yaml @@ -0,0 +1,203 @@ + +--- +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + annotations: + controller-gen.kubebuilder.io/version: v0.2.4 + creationTimestamp: null + name: executionhooks.apps.k8s.io +spec: + group: apps.k8s.io + names: + kind: ExecutionHook + listKind: ExecutionHookList + plural: executionhooks + singular: executionhook + scope: Namespaced + validation: + openAPIV3Schema: + description: ExecutionHook is the Schema for the executionhooks API + properties: + apiVersion: + description: 'APIVersion defines the versioned schema of this representation + of an object. Servers should convert recognized schemas to the latest + internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources' + type: string + kind: + description: 'Kind is a string value representing the REST resource this + object represents. Servers may infer this from the endpoint the client + submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds' + type: string + metadata: + type: object + spec: + description: ExecutionHookSpec defines the desired state of ExecutionHook + HookActionName is copied to ExecutionHookSpec by the controller such as + the Snapshot Controller. + properties: + actionName: + description: Name of the HookAction. This is required. + type: string + podSelection: + description: PodSelection defines how to select pods and containers + to run the executionhook. If multiple pod/containers are selected, + the action will executed on them asynchronously. If execution ordering + is required, caller has to implement the logic and create different + hooks in order. This field is required. + properties: + podContainerNamesList: + description: PodContainerNamesList lists the pods/containers on + which the ExecutionHook should be executed. If not specified, + the ExecutionHook controller will find all pods and containers + based on PodContainerSelector. If both PodContainerNamesList and + PodContainerSelector are not specified, the ExecutionHook cannot + be executed and it will fail. + items: + description: PodContainerNames lists the containers the ExecutionHook + should be executed on in a Pod. + properties: + containerNames: + items: + type: string + type: array + podName: + description: This field is required + type: string + required: + - podName + type: object + type: array + podContainerSelector: + description: PodContainerSelector is for hook controller to find + pods and containers based on the pod label selector and container + names If PodContainerNamesList is specified, this field will not + be used. + properties: + containerList: + description: If specified, controller only select the containers + that are listed from the selected pods based on PodSelector. + Otherwise, all containers of the pods will be selected + items: + type: string + type: array + podSelector: + description: PodSelector specifies a label query over a set + of pods. + properties: + matchExpressions: + description: matchExpressions is a list of label selector + requirements. The requirements are ANDed. + items: + description: A label selector requirement is a selector + that contains values, a key, and an operator that relates + the key and values. + properties: + key: + description: key is the label key that the selector + applies to. + type: string + operator: + description: operator represents a key's relationship + to a set of values. Valid operators are In, NotIn, + Exists and DoesNotExist. + type: string + values: + description: values is an array of string values. + If the operator is In or NotIn, the values array + must be non-empty. If the operator is Exists or + DoesNotExist, the values array must be empty. This + array is replaced during a strategic merge patch. + items: + type: string + type: array + required: + - key + - operator + type: object + type: array + matchLabels: + additionalProperties: + type: string + description: matchLabels is a map of {key,value} pairs. + A single {key,value} in the matchLabels map is equivalent + to an element of matchExpressions, whose key field is + "key", the operator is "In", and the values array contains + only "value". The requirements are ANDed. + type: object + type: object + type: object + type: object + required: + - actionName + - podSelection + type: object + status: + description: ExecutionHookStatus defines the observed state of ExecutionHook + properties: + containerExecutionHookStatuses: + description: This is a list of ContainerExecutionHookStatus, with each + status representing information about how hook is executed in a container, + including pod name, container name, ActionTimestamp, ActionSucceed, + etc. + items: + description: ContainerExecutionHookStatus represents the current state + of a hook for a specific container in a pod + properties: + actionSucceed: + description: Succeed is set to true when the action is executed + in the container successfully. It will be set to false if the + action cannot be executed successfully after ActionTimeoutSeconds + passes. + type: boolean + actionTimestamp: + description: If not set, it is nil, indicating Action has not + started If set, it means Action has started at the specified + time + format: date-time + type: string + containerName: + description: This field is required + type: string + error: + description: The last error encountered when executing the action. + The hook controller might update this field each time it retries + the execution. + properties: + errorType: + description: Type of the error This is required + type: string + message: + description: Error message + type: string + reason: + description: More detailed reason why error happens + type: string + timestamp: + description: It indicates when the error occurred + format: date-time + type: string + required: + - errorType + type: object + podName: + description: This field is required + type: string + required: + - containerName + - podName + type: object + type: array + type: object + type: object + version: v1alpha1 + versions: + - name: v1alpha1 + served: true + storage: true +status: + acceptedNames: + kind: "" + plural: "" + conditions: [] + storedVersions: [] diff --git a/config/crd/kustomization.yaml b/config/crd/kustomization.yaml new file mode 100644 index 0000000..d19b04d --- /dev/null +++ b/config/crd/kustomization.yaml @@ -0,0 +1,21 @@ +# This kustomization.yaml is not intended to be run by itself, +# since it depends on service name and namespace that are out of this kustomize package. +# It should be run by config/default +resources: +- bases/apps.k8s.io_executionhooks.yaml +# +kubebuilder:scaffold:crdkustomizeresource + +patchesStrategicMerge: +# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix. +# patches here are for enabling the conversion webhook for each CRD +#- patches/webhook_in_executionhooks.yaml +# +kubebuilder:scaffold:crdkustomizewebhookpatch + +# [CERTMANAGER] To enable webhook, uncomment all the sections with [CERTMANAGER] prefix. +# patches here are for enabling the CA injection for each CRD +#- patches/cainjection_in_executionhooks.yaml +# +kubebuilder:scaffold:crdkustomizecainjectionpatch + +# the following config is for teaching kustomize how to do kustomization for CRDs. +configurations: +- kustomizeconfig.yaml diff --git a/config/crd/kustomizeconfig.yaml b/config/crd/kustomizeconfig.yaml new file mode 100644 index 0000000..6f83d9a --- /dev/null +++ b/config/crd/kustomizeconfig.yaml @@ -0,0 +1,17 @@ +# This file is for teaching kustomize how to substitute name and namespace reference in CRD +nameReference: +- kind: Service + version: v1 + fieldSpecs: + - kind: CustomResourceDefinition + group: apiextensions.k8s.io + path: spec/conversion/webhookClientConfig/service/name + +namespace: +- kind: CustomResourceDefinition + group: apiextensions.k8s.io + path: spec/conversion/webhookClientConfig/service/namespace + create: false + +varReference: +- path: metadata/annotations diff --git a/config/crd/patches/cainjection_in_executionhooks.yaml b/config/crd/patches/cainjection_in_executionhooks.yaml new file mode 100644 index 0000000..33942f1 --- /dev/null +++ b/config/crd/patches/cainjection_in_executionhooks.yaml @@ -0,0 +1,8 @@ +# The following patch adds a directive for certmanager to inject CA into the CRD +# CRD conversion requires k8s 1.13 or later. +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + annotations: + cert-manager.io/inject-ca-from: $(CERTIFICATE_NAMESPACE)/$(CERTIFICATE_NAME) + name: executionhooks.apps.k8s.io diff --git a/config/crd/patches/webhook_in_executionhooks.yaml b/config/crd/patches/webhook_in_executionhooks.yaml new file mode 100644 index 0000000..1c883bd --- /dev/null +++ b/config/crd/patches/webhook_in_executionhooks.yaml @@ -0,0 +1,17 @@ +# The following patch enables conversion webhook for CRD +# CRD conversion requires k8s 1.13 or later. +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + name: executionhooks.apps.k8s.io +spec: + conversion: + strategy: Webhook + webhookClientConfig: + # this is "\n" used as a placeholder, otherwise it will be rejected by the apiserver for being blank, + # but we're going to set it later using the cert-manager (or potentially a patch if not using cert-manager) + caBundle: Cg== + service: + namespace: system + name: webhook-service + path: /convert diff --git a/config/default/kustomization.yaml b/config/default/kustomization.yaml new file mode 100644 index 0000000..6e54579 --- /dev/null +++ b/config/default/kustomization.yaml @@ -0,0 +1,74 @@ +# Adds namespace to all resources. +namespace: execution-hook-system + +# Value of this field is prepended to the +# names of all resources, e.g. a deployment named +# "wordpress" becomes "alices-wordpress". +# Note that it should also match with the prefix (text before '-') of the namespace +# field above. +namePrefix: execution-hook- + +# Labels to add to all resources and selectors. +#commonLabels: +# someName: someValue + +bases: +- ../crd +- ../rbac +- ../manager +# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in crd/kustomization.yaml +#- ../webhook +# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER'. 'WEBHOOK' components are required. +#- ../certmanager +# [PROMETHEUS] To enable prometheus monitor, uncomment all sections with 'PROMETHEUS'. +#- ../prometheus + +patchesStrategicMerge: + # Protect the /metrics endpoint by putting it behind auth. + # Only one of manager_auth_proxy_patch.yaml and + # manager_prometheus_metrics_patch.yaml should be enabled. +- manager_auth_proxy_patch.yaml + # If you want your controller-manager to expose the /metrics + # endpoint w/o any authn/z, uncomment the following line and + # comment manager_auth_proxy_patch.yaml. + # Only one of manager_auth_proxy_patch.yaml and + # manager_prometheus_metrics_patch.yaml should be enabled. +#- manager_prometheus_metrics_patch.yaml + +# [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix including the one in crd/kustomization.yaml +#- manager_webhook_patch.yaml + +# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER'. +# Uncomment 'CERTMANAGER' sections in crd/kustomization.yaml to enable the CA injection in the admission webhooks. +# 'CERTMANAGER' needs to be enabled to use ca injection +#- webhookcainjection_patch.yaml + +# the following config is for teaching kustomize how to do var substitution +vars: +# [CERTMANAGER] To enable cert-manager, uncomment all sections with 'CERTMANAGER' prefix. +#- name: CERTIFICATE_NAMESPACE # namespace of the certificate CR +# objref: +# kind: Certificate +# group: cert-manager.io +# version: v1alpha2 +# name: serving-cert # this name should match the one in certificate.yaml +# fieldref: +# fieldpath: metadata.namespace +#- name: CERTIFICATE_NAME +# objref: +# kind: Certificate +# group: cert-manager.io +# version: v1alpha2 +# name: serving-cert # this name should match the one in certificate.yaml +#- name: SERVICE_NAMESPACE # namespace of the service +# objref: +# kind: Service +# version: v1 +# name: webhook-service +# fieldref: +# fieldpath: metadata.namespace +#- name: SERVICE_NAME +# objref: +# kind: Service +# version: v1 +# name: webhook-service diff --git a/config/default/manager_auth_proxy_patch.yaml b/config/default/manager_auth_proxy_patch.yaml new file mode 100644 index 0000000..61cb5e7 --- /dev/null +++ b/config/default/manager_auth_proxy_patch.yaml @@ -0,0 +1,25 @@ +# This patch inject a sidecar container which is a HTTP proxy for the controller manager, +# it performs RBAC authorization against the Kubernetes API using SubjectAccessReviews. +apiVersion: apps/v1 +kind: Deployment +metadata: + name: controller-manager + namespace: system +spec: + template: + spec: + containers: + - name: kube-rbac-proxy + image: gcr.io/kubebuilder/kube-rbac-proxy:v0.4.1 + args: + - "--secure-listen-address=0.0.0.0:8443" + - "--upstream=http://127.0.0.1:8080/" + - "--logtostderr=true" + - "--v=10" + ports: + - containerPort: 8443 + name: https + - name: manager + args: + - "--metrics-addr=127.0.0.1:8080" + - "--enable-leader-election" diff --git a/config/default/manager_webhook_patch.yaml b/config/default/manager_webhook_patch.yaml new file mode 100644 index 0000000..738de35 --- /dev/null +++ b/config/default/manager_webhook_patch.yaml @@ -0,0 +1,23 @@ +apiVersion: apps/v1 +kind: Deployment +metadata: + name: controller-manager + namespace: system +spec: + template: + spec: + containers: + - name: manager + ports: + - containerPort: 9443 + name: webhook-server + protocol: TCP + volumeMounts: + - mountPath: /tmp/k8s-webhook-server/serving-certs + name: cert + readOnly: true + volumes: + - name: cert + secret: + defaultMode: 420 + secretName: webhook-server-cert diff --git a/config/default/webhookcainjection_patch.yaml b/config/default/webhookcainjection_patch.yaml new file mode 100644 index 0000000..7e79bf9 --- /dev/null +++ b/config/default/webhookcainjection_patch.yaml @@ -0,0 +1,15 @@ +# This patch add annotation to admission webhook config and +# the variables $(CERTIFICATE_NAMESPACE) and $(CERTIFICATE_NAME) will be substituted by kustomize. +apiVersion: admissionregistration.k8s.io/v1beta1 +kind: MutatingWebhookConfiguration +metadata: + name: mutating-webhook-configuration + annotations: + cert-manager.io/inject-ca-from: $(CERTIFICATE_NAMESPACE)/$(CERTIFICATE_NAME) +--- +apiVersion: admissionregistration.k8s.io/v1beta1 +kind: ValidatingWebhookConfiguration +metadata: + name: validating-webhook-configuration + annotations: + cert-manager.io/inject-ca-from: $(CERTIFICATE_NAMESPACE)/$(CERTIFICATE_NAME) diff --git a/config/manager/kustomization.yaml b/config/manager/kustomization.yaml new file mode 100644 index 0000000..5c5f0b8 --- /dev/null +++ b/config/manager/kustomization.yaml @@ -0,0 +1,2 @@ +resources: +- manager.yaml diff --git a/config/manager/manager.yaml b/config/manager/manager.yaml new file mode 100644 index 0000000..b6c85a5 --- /dev/null +++ b/config/manager/manager.yaml @@ -0,0 +1,39 @@ +apiVersion: v1 +kind: Namespace +metadata: + labels: + control-plane: controller-manager + name: system +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: controller-manager + namespace: system + labels: + control-plane: controller-manager +spec: + selector: + matchLabels: + control-plane: controller-manager + replicas: 1 + template: + metadata: + labels: + control-plane: controller-manager + spec: + containers: + - command: + - /manager + args: + - --enable-leader-election + image: controller:latest + name: manager + resources: + limits: + cpu: 100m + memory: 30Mi + requests: + cpu: 100m + memory: 20Mi + terminationGracePeriodSeconds: 10 diff --git a/config/prometheus/kustomization.yaml b/config/prometheus/kustomization.yaml new file mode 100644 index 0000000..ed13716 --- /dev/null +++ b/config/prometheus/kustomization.yaml @@ -0,0 +1,2 @@ +resources: +- monitor.yaml diff --git a/config/prometheus/monitor.yaml b/config/prometheus/monitor.yaml new file mode 100644 index 0000000..e2d9b08 --- /dev/null +++ b/config/prometheus/monitor.yaml @@ -0,0 +1,15 @@ + +# Prometheus Monitor Service (Metrics) +apiVersion: monitoring.coreos.com/v1 +kind: ServiceMonitor +metadata: + labels: + control-plane: controller-manager + name: controller-manager-metrics-monitor + namespace: system +spec: + endpoints: + - path: /metrics + port: https + selector: + control-plane: controller-manager diff --git a/config/rbac/auth_proxy_role.yaml b/config/rbac/auth_proxy_role.yaml new file mode 100644 index 0000000..618f5e4 --- /dev/null +++ b/config/rbac/auth_proxy_role.yaml @@ -0,0 +1,13 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + name: proxy-role +rules: +- apiGroups: ["authentication.k8s.io"] + resources: + - tokenreviews + verbs: ["create"] +- apiGroups: ["authorization.k8s.io"] + resources: + - subjectaccessreviews + verbs: ["create"] diff --git a/config/rbac/auth_proxy_role_binding.yaml b/config/rbac/auth_proxy_role_binding.yaml new file mode 100644 index 0000000..48ed1e4 --- /dev/null +++ b/config/rbac/auth_proxy_role_binding.yaml @@ -0,0 +1,12 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRoleBinding +metadata: + name: proxy-rolebinding +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: ClusterRole + name: proxy-role +subjects: +- kind: ServiceAccount + name: default + namespace: system diff --git a/config/rbac/auth_proxy_service.yaml b/config/rbac/auth_proxy_service.yaml new file mode 100644 index 0000000..6cf656b --- /dev/null +++ b/config/rbac/auth_proxy_service.yaml @@ -0,0 +1,14 @@ +apiVersion: v1 +kind: Service +metadata: + labels: + control-plane: controller-manager + name: controller-manager-metrics-service + namespace: system +spec: + ports: + - name: https + port: 8443 + targetPort: https + selector: + control-plane: controller-manager diff --git a/config/rbac/executionhook_editor_role.yaml b/config/rbac/executionhook_editor_role.yaml new file mode 100644 index 0000000..cc883a8 --- /dev/null +++ b/config/rbac/executionhook_editor_role.yaml @@ -0,0 +1,26 @@ +# permissions to do edit executionhooks. +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + name: executionhook-editor-role +rules: +- apiGroups: + - apps.k8s.io + resources: + - executionhooks + verbs: + - create + - delete + - get + - list + - patch + - update + - watch +- apiGroups: + - apps.k8s.io + resources: + - executionhooks/status + verbs: + - get + - patch + - update diff --git a/config/rbac/executionhook_viewer_role.yaml b/config/rbac/executionhook_viewer_role.yaml new file mode 100644 index 0000000..824f4e2 --- /dev/null +++ b/config/rbac/executionhook_viewer_role.yaml @@ -0,0 +1,20 @@ +# permissions to do viewer executionhooks. +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + name: executionhook-viewer-role +rules: +- apiGroups: + - apps.k8s.io + resources: + - executionhooks + verbs: + - get + - list + - watch +- apiGroups: + - apps.k8s.io + resources: + - executionhooks/status + verbs: + - get diff --git a/config/rbac/kustomization.yaml b/config/rbac/kustomization.yaml new file mode 100644 index 0000000..817f1fe --- /dev/null +++ b/config/rbac/kustomization.yaml @@ -0,0 +1,11 @@ +resources: +- role.yaml +- role_binding.yaml +- leader_election_role.yaml +- leader_election_role_binding.yaml +# Comment the following 3 lines if you want to disable +# the auth proxy (https://github.com/brancz/kube-rbac-proxy) +# which protects your /metrics endpoint. +- auth_proxy_service.yaml +- auth_proxy_role.yaml +- auth_proxy_role_binding.yaml diff --git a/config/rbac/leader_election_role.yaml b/config/rbac/leader_election_role.yaml new file mode 100644 index 0000000..eaa7915 --- /dev/null +++ b/config/rbac/leader_election_role.yaml @@ -0,0 +1,32 @@ +# permissions to do leader election. +apiVersion: rbac.authorization.k8s.io/v1 +kind: Role +metadata: + name: leader-election-role +rules: +- apiGroups: + - "" + resources: + - configmaps + verbs: + - get + - list + - watch + - create + - update + - patch + - delete +- apiGroups: + - "" + resources: + - configmaps/status + verbs: + - get + - update + - patch +- apiGroups: + - "" + resources: + - events + verbs: + - create diff --git a/config/rbac/leader_election_role_binding.yaml b/config/rbac/leader_election_role_binding.yaml new file mode 100644 index 0000000..eed1690 --- /dev/null +++ b/config/rbac/leader_election_role_binding.yaml @@ -0,0 +1,12 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: RoleBinding +metadata: + name: leader-election-rolebinding +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: Role + name: leader-election-role +subjects: +- kind: ServiceAccount + name: default + namespace: system diff --git a/config/rbac/role.yaml b/config/rbac/role.yaml new file mode 100644 index 0000000..e0beaf3 --- /dev/null +++ b/config/rbac/role.yaml @@ -0,0 +1,28 @@ + +--- +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + creationTimestamp: null + name: manager-role +rules: +- apiGroups: + - apps.k8s.io + resources: + - executionhooks + verbs: + - create + - delete + - get + - list + - patch + - update + - watch +- apiGroups: + - apps.k8s.io + resources: + - executionhooks/status + verbs: + - get + - patch + - update diff --git a/config/rbac/role_binding.yaml b/config/rbac/role_binding.yaml new file mode 100644 index 0000000..8f26587 --- /dev/null +++ b/config/rbac/role_binding.yaml @@ -0,0 +1,12 @@ +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRoleBinding +metadata: + name: manager-rolebinding +roleRef: + apiGroup: rbac.authorization.k8s.io + kind: ClusterRole + name: manager-role +subjects: +- kind: ServiceAccount + name: default + namespace: system diff --git a/config/samples/apps_v1alpha1_executionhook.yaml b/config/samples/apps_v1alpha1_executionhook.yaml new file mode 100644 index 0000000..1d6a589 --- /dev/null +++ b/config/samples/apps_v1alpha1_executionhook.yaml @@ -0,0 +1,11 @@ +apiVersion: apps.k8s.io/v1alpha1 +kind: ExecutionHook +metadata: + name: executionhook-sample +spec: + actionName: hookaction-sample + podSelection: + podContainerNamesList: + - podName: pod-sample + containerNames: + - ubuntu diff --git a/config/webhook/kustomization.yaml b/config/webhook/kustomization.yaml new file mode 100644 index 0000000..9cf2613 --- /dev/null +++ b/config/webhook/kustomization.yaml @@ -0,0 +1,6 @@ +resources: +- manifests.yaml +- service.yaml + +configurations: +- kustomizeconfig.yaml diff --git a/config/webhook/kustomizeconfig.yaml b/config/webhook/kustomizeconfig.yaml new file mode 100644 index 0000000..25e21e3 --- /dev/null +++ b/config/webhook/kustomizeconfig.yaml @@ -0,0 +1,25 @@ +# the following config is for teaching kustomize where to look at when substituting vars. +# It requires kustomize v2.1.0 or newer to work properly. +nameReference: +- kind: Service + version: v1 + fieldSpecs: + - kind: MutatingWebhookConfiguration + group: admissionregistration.k8s.io + path: webhooks/clientConfig/service/name + - kind: ValidatingWebhookConfiguration + group: admissionregistration.k8s.io + path: webhooks/clientConfig/service/name + +namespace: +- kind: MutatingWebhookConfiguration + group: admissionregistration.k8s.io + path: webhooks/clientConfig/service/namespace + create: true +- kind: ValidatingWebhookConfiguration + group: admissionregistration.k8s.io + path: webhooks/clientConfig/service/namespace + create: true + +varReference: +- path: metadata/annotations diff --git a/config/webhook/manifests.yaml b/config/webhook/manifests.yaml new file mode 100644 index 0000000..e69de29 diff --git a/config/webhook/service.yaml b/config/webhook/service.yaml new file mode 100644 index 0000000..31e0f82 --- /dev/null +++ b/config/webhook/service.yaml @@ -0,0 +1,12 @@ + +apiVersion: v1 +kind: Service +metadata: + name: webhook-service + namespace: system +spec: + ports: + - port: 443 + targetPort: 9443 + selector: + control-plane: controller-manager diff --git a/controllers/executionhook_controller.go b/controllers/executionhook_controller.go new file mode 100644 index 0000000..07a1456 --- /dev/null +++ b/controllers/executionhook_controller.go @@ -0,0 +1,89 @@ +/* + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package controllers + +import ( + "context" + "fmt" + + "github.com/go-logr/logr" + apierrs "k8s.io/apimachinery/pkg/api/errors" + "k8s.io/apimachinery/pkg/runtime" + ctrl "sigs.k8s.io/controller-runtime" + "sigs.k8s.io/controller-runtime/pkg/client" + + appsv1alpha1 "sigs.k8s.io/execution-hook/api/v1alpha1" +) + +// ExecutionHookReconciler reconciles a ExecutionHook object +type ExecutionHookReconciler struct { + client.Client + Log logr.Logger + Scheme *runtime.Scheme +} + +// +kubebuilder:rbac:groups=apps.k8s.io,resources=executionhooks,verbs=get;list;watch;create;update;patch;delete +// +kubebuilder:rbac:groups=apps.k8s.io,resources=executionhooks/status,verbs=get;update;patch + +func (r *ExecutionHookReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) { + ctx := context.Background() + log := r.Log.WithValues("executionhook", req.NamespacedName) + + var hook appsv1alpha1.ExecutionHook + if err := r.Client.Get(ctx, req.NamespacedName, &hook); err != nil { + // we'll ignore not-found errors, since they can't be fixed by an immediate + // requeue (we'll need to wait for a new notification), and we can get them + // on deleted requests. + return ctrl.Result{}, ignoreNotFound(err) + } + + log.Info("retrieved hook", "hook", hook) + podContainerNamesList := hook.Spec.PodSelection.PodContainerNamesList + if len(podContainerNamesList) == 0 { + podContainerNamesList = r.podContainerNamesListFromSelector(hook.Spec.PodSelection.PodContainerSelector) + } + + if len(podContainerNamesList) == 0 { + return ctrl.Result{}, fmt.Errorf("PodSelection must define a list of Pods or a Pod selector and a list of container names [%+v]", hook.Spec.PodSelection) + } + + // your logic here + + return ctrl.Result{}, nil +} + +func (r *ExecutionHookReconciler) podContainerNamesListFromSelector(podContainerSelector *appsv1alpha1.PodContainerSelector) []appsv1alpha1.PodContainerNames { + if podContainerSelector == nil || podContainerSelector.PodSelector == nil { + return []appsv1alpha1.PodContainerNames{} + } + + // TODO: query pods using selector and return list of PodContainerNames for matching Pods + + return []appsv1alpha1.PodContainerNames{} +} + +func (r *ExecutionHookReconciler) SetupWithManager(mgr ctrl.Manager) error { + return ctrl.NewControllerManagedBy(mgr). + For(&appsv1alpha1.ExecutionHook{}). + Complete(r) +} + +func ignoreNotFound(err error) error { + if apierrs.IsNotFound(err) { + return nil + } + return err +} diff --git a/controllers/suite_test.go b/controllers/suite_test.go new file mode 100644 index 0000000..08cdedc --- /dev/null +++ b/controllers/suite_test.go @@ -0,0 +1,79 @@ +/* + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package controllers + +import ( + "path/filepath" + "testing" + + . "github.com/onsi/ginkgo" + . "github.com/onsi/gomega" + + "k8s.io/client-go/kubernetes/scheme" + "k8s.io/client-go/rest" + "sigs.k8s.io/controller-runtime/pkg/client" + "sigs.k8s.io/controller-runtime/pkg/envtest" + logf "sigs.k8s.io/controller-runtime/pkg/log" + "sigs.k8s.io/controller-runtime/pkg/log/zap" + appsv1alpha1 "sigs.k8s.io/execution-hook/api/v1alpha1" + // +kubebuilder:scaffold:imports +) + +// These tests use Ginkgo (BDD-style Go testing framework). Refer to +// http://onsi.github.io/ginkgo/ to learn more about Ginkgo. + +var cfg *rest.Config +var k8sClient client.Client +var testEnv *envtest.Environment + +func TestAPIs(t *testing.T) { + RegisterFailHandler(Fail) + + RunSpecsWithDefaultAndCustomReporters(t, + "Controller Suite", + []Reporter{envtest.NewlineReporter{}}) +} + +var _ = BeforeSuite(func(done Done) { + logf.SetLogger(zap.LoggerTo(GinkgoWriter, true)) + + By("bootstrapping test environment") + testEnv = &envtest.Environment{ + CRDDirectoryPaths: []string{filepath.Join("..", "config", "crd", "bases")}, + } + + var err error + cfg, err = testEnv.Start() + Expect(err).ToNot(HaveOccurred()) + Expect(cfg).ToNot(BeNil()) + + err = appsv1alpha1.AddToScheme(scheme.Scheme) + Expect(err).NotTo(HaveOccurred()) + + // +kubebuilder:scaffold:scheme + + k8sClient, err = client.New(cfg, client.Options{Scheme: scheme.Scheme}) + Expect(err).ToNot(HaveOccurred()) + Expect(k8sClient).ToNot(BeNil()) + + close(done) +}, 60) + +var _ = AfterSuite(func() { + By("tearing down the test environment") + err := testEnv.Stop() + Expect(err).ToNot(HaveOccurred()) +}) diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..d16c4a2 --- /dev/null +++ b/go.mod @@ -0,0 +1,17 @@ +module sigs.k8s.io/execution-hook + +go 1.13 + +require ( + github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect + github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d // indirect + github.com/go-logr/logr v0.1.0 + github.com/onsi/ginkgo v1.8.0 + github.com/onsi/gomega v1.5.0 + github.com/prometheus/common v0.0.0-20181126121408-4724e9255275 + gopkg.in/alecthomas/kingpin.v2 v2.2.6 // indirect + k8s.io/apimachinery v0.0.0-20191028221656-72ed19daf4bb + k8s.io/client-go v0.0.0-20190918160344-1fbdaa4c8d90 + sigs.k8s.io/controller-runtime v0.4.0 + sigs.k8s.io/kind v0.6.1 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..bccc93c --- /dev/null +++ b/go.sum @@ -0,0 +1,411 @@ 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h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o= diff --git a/hack/boilerplate.go.txt b/hack/boilerplate.go.txt new file mode 100644 index 0000000..b92001f --- /dev/null +++ b/hack/boilerplate.go.txt @@ -0,0 +1,14 @@ +/* + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ \ No newline at end of file diff --git a/main.go b/main.go new file mode 100644 index 0000000..1f9f58d --- /dev/null +++ b/main.go @@ -0,0 +1,82 @@ +/* + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package main + +import ( + "flag" + "os" + + "k8s.io/apimachinery/pkg/runtime" + clientgoscheme "k8s.io/client-go/kubernetes/scheme" + _ "k8s.io/client-go/plugin/pkg/client/auth/gcp" + ctrl "sigs.k8s.io/controller-runtime" + "sigs.k8s.io/controller-runtime/pkg/log/zap" + appsv1alpha1 "sigs.k8s.io/execution-hook/api/v1alpha1" + "sigs.k8s.io/execution-hook/controllers" + // +kubebuilder:scaffold:imports +) + +var ( + scheme = runtime.NewScheme() + setupLog = ctrl.Log.WithName("setup") +) + +func init() { + _ = clientgoscheme.AddToScheme(scheme) + + _ = appsv1alpha1.AddToScheme(scheme) + // +kubebuilder:scaffold:scheme +} + +func main() { + var metricsAddr string + var enableLeaderElection bool + flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.") + flag.BoolVar(&enableLeaderElection, "enable-leader-election", false, + "Enable leader election for controller manager. Enabling this will ensure there is only one active controller manager.") + flag.Parse() + + ctrl.SetLogger(zap.New(func(o *zap.Options) { + o.Development = true + })) + + mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{ + Scheme: scheme, + MetricsBindAddress: metricsAddr, + LeaderElection: enableLeaderElection, + Port: 9443, + }) + if err != nil { + setupLog.Error(err, "unable to start manager") + os.Exit(1) + } + + if err = (&controllers.ExecutionHookReconciler{ + Client: mgr.GetClient(), + Log: ctrl.Log.WithName("controllers").WithName("ExecutionHook"), + Scheme: mgr.GetScheme(), + }).SetupWithManager(mgr); err != nil { + setupLog.Error(err, "unable to create controller", "controller", "ExecutionHook") + os.Exit(1) + } + // +kubebuilder:scaffold:builder + + setupLog.Info("starting manager") + if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil { + setupLog.Error(err, "problem running manager") + os.Exit(1) + } +} From 0e6ae7bd4b33020491c8a67b7e71d3c7f8dfb6d8 Mon Sep 17 00:00:00 2001 From: Ashish Amarnath Date: Wed, 25 Dec 2019 23:48:53 -0800 Subject: [PATCH 2/7] Fixes to get executionhook API working * QoL improvements in makefile Signed-off-by: Ashish Amarnath --- Dockerfile | 3 +- Makefile | 109 +-- README.md | 2 +- api/v1alpha1/executionhook_types.go | 12 +- api/v1alpha1/groupversion_info.go | 1 + api/v1alpha1/zz_generated.deepcopy.go | 1 + ...ks.yaml => apps.k8s.io_executionhook.yaml} | 14 +- config/crd/kustomization.yaml | 6 +- ...yaml => cainjection_in_executionhook.yaml} | 2 +- ...oks.yaml => webhook_in_executionhook.yaml} | 2 +- config/manager/kustomization.yaml | 2 + config/rbac/executionhook_editor_role.yaml | 4 +- config/rbac/executionhook_viewer_role.yaml | 4 +- config/rbac/role.yaml | 4 +- controllers/executionhook_controller.go | 129 +++- controllers/suite_test.go | 1 + go.mod | 23 +- go.sum | 160 +++- hack/boilerplate.go.txt | 1 + hack/tools/go.mod | 8 + hack/tools/go.sum | 687 ++++++++++++++++++ hack/tools/tools.go | 25 + main.go | 45 +- util/patch/patch.go | 169 +++++ util/util.go | 38 + 25 files changed, 1329 insertions(+), 123 deletions(-) rename config/crd/bases/{apps.k8s.io_executionhooks.yaml => apps.k8s.io_executionhook.yaml} (98%) rename config/crd/patches/{cainjection_in_executionhooks.yaml => cainjection_in_executionhook.yaml} (89%) rename config/crd/patches/{webhook_in_executionhooks.yaml => webhook_in_executionhook.yaml} (94%) create mode 100644 hack/tools/go.mod create mode 100644 hack/tools/go.sum create mode 100644 hack/tools/tools.go create mode 100644 util/patch/patch.go create mode 100644 util/util.go diff --git a/Dockerfile b/Dockerfile index 74eb9d7..8309733 100644 --- a/Dockerfile +++ b/Dockerfile @@ -11,8 +11,7 @@ RUN go mod download # Copy the go source COPY main.go main.go -COPY api/ api/ -COPY controllers/ controllers/ +COPY ./ ./ # Build RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on go build -a -o manager main.go diff --git a/Makefile b/Makefile index cf99ca1..80ae84d 100644 --- a/Makefile +++ b/Makefile @@ -1,45 +1,72 @@ - +# Copyright 2018 The Kubernetes Authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +REGISTRY ?= quay.io/ashish_amarnath +IMAGE_NAME ?= executionhook-controller +TAG ?= dev-20191227-02 # Image URL to use all building/pushing image targets -IMG ?= controller:latest +CONTROLLER_IMAGE ?= $(REGISTRY)/$(IMAGE_NAME):$(TAG) # Produce CRDs that work back to Kubernetes 1.11 (no version conversion) CRD_OPTIONS ?= "crd:trivialVersions=true" -# Get the currently used golang install path (in GOPATH/bin, unless GOBIN is set) -ifeq (,$(shell go env GOBIN)) -GOBIN=$(shell go env GOPATH)/bin -else -GOBIN=$(shell go env GOBIN) -endif +# Directories. +TOOLS_DIR := hack/tools +TOOLS_BIN_DIR := $(TOOLS_DIR)/bin + +# Tool binaries. +KUSTOMIZE := $(TOOLS_BIN_DIR)/kustomize +CONTROLLER_GEN := $(TOOLS_BIN_DIR)/controller-gen + +$(CONTROLLER_GEN): $(TOOLS_DIR)/go.mod + cd $(TOOLS_DIR); go build -tags=tools -o ./bin/controller-gen sigs.k8s.io/controller-tools/cmd/controller-gen +$(KUSTOMIZE): $(TOOLS_DIR)/go.mod + cd $(TOOLS_DIR); go build -tags=tools -o ./bin/kustomize sigs.k8s.io/kustomize/kustomize/v3 + +.PHONY: all all: manager -# Run tests -test: generate fmt vet manifests +.PHONY: test +test: generate fmt vet manifests # Run tests go test ./... -coverprofile cover.out -# Build manager binary -manager: generate fmt vet +.PHONY: manager +manager: generate fmt vet # Build manager binary go build -o bin/manager main.go -# Run against the configured Kubernetes cluster in ~/.kube/config -run: generate fmt vet manifests +.PHONY: run +run: generate fmt vet manifests # Run against the configured Kubernetes cluster in ~/.kube/config go run ./main.go -# Install CRDs into a cluster -install: manifests - kustomize build config/crd | kubectl apply -f - +.PHONY: install +install: manifests $(KUSTOMIZE) # Install CRDs into a cluster + $(KUSTOMIZE) build config/crd | kubectl apply -f - -# Uninstall CRDs from a cluster -uninstall: manifests - kustomize build config/crd | kubectl delete -f - +.PHONY: uninstall +uninstall: manifests $(KUSTOMIZE) # Uninstall CRDs from a cluster + $(KUSTOMIZE) build config/crd | kubectl delete -f - +.PHONY: deploy # Deploy controller in the configured Kubernetes cluster in ~/.kube/config -deploy: manifests - cd config/manager && kustomize edit set image controller=${IMG} - kustomize build config/default | kubectl apply -f - +# hacky, works for now. TODO: ashish-amarnath make this better +deploy: manifests $(KUSTOMIZE) + cd config/manager && ../../$(KUSTOMIZE) edit set image controller=${CONTROLLER_IMAGE} + $(KUSTOMIZE) build config/default | kubectl apply -f - +.PHONY: manifests # Generate manifests e.g. CRD, RBAC etc. -manifests: controller-gen +manifests: $(CONTROLLER_GEN) $(CONTROLLER_GEN) $(CRD_OPTIONS) rbac:roleName=manager-role webhook paths="./..." output:crd:artifacts:config=config/crd/bases # Run go fmt against code @@ -51,30 +78,14 @@ vet: go vet ./... # Generate code -generate: controller-gen +generate: $(CONTROLLER_GEN) $(CONTROLLER_GEN) object:headerFile=./hack/boilerplate.go.txt paths="./..." -# Build the docker image -docker-build: test - docker build . -t ${IMG} - -# Push the docker image -docker-push: - docker push ${IMG} - -# find or download controller-gen -# download controller-gen if necessary -controller-gen: -ifeq (, $(shell which controller-gen)) - @{ \ - set -e ;\ - CONTROLLER_GEN_TMP_DIR=$$(mktemp -d) ;\ - cd $$CONTROLLER_GEN_TMP_DIR ;\ - go mod init tmp ;\ - go get sigs.k8s.io/controller-tools/cmd/controller-gen@v0.2.4 ;\ - rm -rf $$CONTROLLER_GEN_TMP_DIR ;\ - } -CONTROLLER_GEN=$(GOBIN)/controller-gen -else -CONTROLLER_GEN=$(shell which controller-gen) -endif +.PHONY: docker-build +docker-build: test # Build the controller image + docker build . -t ${CONTROLLER_IMAGE} + +.PHONY: docker-push +docker-push: docker-build # Push the controller image + docker push ${CONTROLLER_IMAGE} + diff --git a/README.md b/README.md index 432deba..2437f76 100644 --- a/README.md +++ b/README.md @@ -5,7 +5,7 @@ and an `ExecutionHookController` to manage the hook's lifecycle. ## Usage -Exection Hook uses the [Kubebuilder framework](https://github.com/kubernetes-sigs/kubebuilder). +Execution Hook uses the [Kubebuilder framework](https://github.com/kubernetes-sigs/kubebuilder). See the [Kubebuilder documentation](https://book.kubebuilder.io/introduction.html) for building, running and testing the project. ## Community, discussion, contribution, and support diff --git a/api/v1alpha1/executionhook_types.go b/api/v1alpha1/executionhook_types.go index 5d5acd5..18250a4 100644 --- a/api/v1alpha1/executionhook_types.go +++ b/api/v1alpha1/executionhook_types.go @@ -1,4 +1,5 @@ /* +Copyright 2020 The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. @@ -19,8 +20,9 @@ import ( metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" ) -// EDIT THIS FILE! THIS IS SCAFFOLDING FOR YOU TO OWN! -// NOTE: json tags are required. Any new fields you add must have json tags for the fields to be serialized. +const ( + ExecutionHookFinalizer = "executionhook.apps.x-k8s.io" +) // ExecutionHookSpec defines the desired state of ExecutionHook // HookActionName is copied to ExecutionHookSpec by the controller such as @@ -91,7 +93,7 @@ type ExecutionHookStatus struct { // information about how hook is executed in a container, including pod name, // container name, ActionTimestamp, ActionSucceed, etc. // +optional - HookStatuses []ContainerExecutionHookStatus `json:"containerExecutionHookStatuses,omitempty" protobuf:"bytes,1,rep,name=containerExecutionHookStatuses"` + HookStatuses []ContainerExecutionHookStatus `json:"hookStatuses,omitempty" protobuf:"bytes,1,rep,name=hookStatuses"` } // ContainerExecutionHookStatus represents the current state of a hook for a specific @@ -152,8 +154,10 @@ const ( ) // +kubebuilder:object:root=true +// +kubebuilder:resource:path=executionhook,shortName=eh,scope=Namespaced,categories=executionhook +// +kubebuilder:subresource:status -// ExecutionHook is the Schema for the executionhooks API +// ExecutionHook is the Schema for the executionhook API type ExecutionHook struct { metav1.TypeMeta `json:",inline"` metav1.ObjectMeta `json:"metadata,omitempty"` diff --git a/api/v1alpha1/groupversion_info.go b/api/v1alpha1/groupversion_info.go index 0ef922c..09c9263 100644 --- a/api/v1alpha1/groupversion_info.go +++ b/api/v1alpha1/groupversion_info.go @@ -1,4 +1,5 @@ /* +Copyright 2020 The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. diff --git a/api/v1alpha1/zz_generated.deepcopy.go b/api/v1alpha1/zz_generated.deepcopy.go index 29c6052..70c481f 100644 --- a/api/v1alpha1/zz_generated.deepcopy.go +++ b/api/v1alpha1/zz_generated.deepcopy.go @@ -1,6 +1,7 @@ // +build !ignore_autogenerated /* +Copyright The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. diff --git a/config/crd/bases/apps.k8s.io_executionhooks.yaml b/config/crd/bases/apps.k8s.io_executionhook.yaml similarity index 98% rename from config/crd/bases/apps.k8s.io_executionhooks.yaml rename to config/crd/bases/apps.k8s.io_executionhook.yaml index 3da9274..3b16800 100644 --- a/config/crd/bases/apps.k8s.io_executionhooks.yaml +++ b/config/crd/bases/apps.k8s.io_executionhook.yaml @@ -6,18 +6,24 @@ metadata: annotations: controller-gen.kubebuilder.io/version: v0.2.4 creationTimestamp: null - name: executionhooks.apps.k8s.io + name: executionhook.apps.k8s.io spec: group: apps.k8s.io names: + categories: + - executionhook kind: ExecutionHook listKind: ExecutionHookList - plural: executionhooks + plural: executionhook + shortNames: + - eh singular: executionhook scope: Namespaced + subresources: + status: {} validation: openAPIV3Schema: - description: ExecutionHook is the Schema for the executionhooks API + description: ExecutionHook is the Schema for the executionhook API properties: apiVersion: description: 'APIVersion defines the versioned schema of this representation @@ -135,7 +141,7 @@ spec: status: description: ExecutionHookStatus defines the observed state of ExecutionHook properties: - containerExecutionHookStatuses: + hookStatuses: description: This is a list of ContainerExecutionHookStatus, with each status representing information about how hook is executed in a container, including pod name, container name, ActionTimestamp, ActionSucceed, diff --git a/config/crd/kustomization.yaml b/config/crd/kustomization.yaml index d19b04d..9907ead 100644 --- a/config/crd/kustomization.yaml +++ b/config/crd/kustomization.yaml @@ -2,18 +2,18 @@ # since it depends on service name and namespace that are out of this kustomize package. # It should be run by config/default resources: -- bases/apps.k8s.io_executionhooks.yaml +- bases/apps.k8s.io_executionhook.yaml # +kubebuilder:scaffold:crdkustomizeresource patchesStrategicMerge: # [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix. # patches here are for enabling the conversion webhook for each CRD -#- patches/webhook_in_executionhooks.yaml +#- patches/webhook_in_executionhook.yaml # +kubebuilder:scaffold:crdkustomizewebhookpatch # [CERTMANAGER] To enable webhook, uncomment all the sections with [CERTMANAGER] prefix. # patches here are for enabling the CA injection for each CRD -#- patches/cainjection_in_executionhooks.yaml +#- patches/cainjection_in_executionhook.yaml # +kubebuilder:scaffold:crdkustomizecainjectionpatch # the following config is for teaching kustomize how to do kustomization for CRDs. diff --git a/config/crd/patches/cainjection_in_executionhooks.yaml b/config/crd/patches/cainjection_in_executionhook.yaml similarity index 89% rename from config/crd/patches/cainjection_in_executionhooks.yaml rename to config/crd/patches/cainjection_in_executionhook.yaml index 33942f1..2a492fb 100644 --- a/config/crd/patches/cainjection_in_executionhooks.yaml +++ b/config/crd/patches/cainjection_in_executionhook.yaml @@ -5,4 +5,4 @@ kind: CustomResourceDefinition metadata: annotations: cert-manager.io/inject-ca-from: $(CERTIFICATE_NAMESPACE)/$(CERTIFICATE_NAME) - name: executionhooks.apps.k8s.io + name: executionhook.apps.k8s.io diff --git a/config/crd/patches/webhook_in_executionhooks.yaml b/config/crd/patches/webhook_in_executionhook.yaml similarity index 94% rename from config/crd/patches/webhook_in_executionhooks.yaml rename to config/crd/patches/webhook_in_executionhook.yaml index 1c883bd..53d07be 100644 --- a/config/crd/patches/webhook_in_executionhooks.yaml +++ b/config/crd/patches/webhook_in_executionhook.yaml @@ -3,7 +3,7 @@ apiVersion: apiextensions.k8s.io/v1beta1 kind: CustomResourceDefinition metadata: - name: executionhooks.apps.k8s.io + name: executionhook.apps.k8s.io spec: conversion: strategy: Webhook diff --git a/config/manager/kustomization.yaml b/config/manager/kustomization.yaml index 5c5f0b8..99cf0f7 100644 --- a/config/manager/kustomization.yaml +++ b/config/manager/kustomization.yaml @@ -1,2 +1,4 @@ +apiVersion: kustomize.config.k8s.io/v1beta1 +kind: Kustomization resources: - manager.yaml diff --git a/config/rbac/executionhook_editor_role.yaml b/config/rbac/executionhook_editor_role.yaml index cc883a8..22deb82 100644 --- a/config/rbac/executionhook_editor_role.yaml +++ b/config/rbac/executionhook_editor_role.yaml @@ -7,7 +7,7 @@ rules: - apiGroups: - apps.k8s.io resources: - - executionhooks + - executionhook verbs: - create - delete @@ -19,7 +19,7 @@ rules: - apiGroups: - apps.k8s.io resources: - - executionhooks/status + - executionhook/status verbs: - get - patch diff --git a/config/rbac/executionhook_viewer_role.yaml b/config/rbac/executionhook_viewer_role.yaml index 824f4e2..19ab347 100644 --- a/config/rbac/executionhook_viewer_role.yaml +++ b/config/rbac/executionhook_viewer_role.yaml @@ -7,7 +7,7 @@ rules: - apiGroups: - apps.k8s.io resources: - - executionhooks + - executionhook verbs: - get - list @@ -15,6 +15,6 @@ rules: - apiGroups: - apps.k8s.io resources: - - executionhooks/status + - executionhook/status verbs: - get diff --git a/config/rbac/role.yaml b/config/rbac/role.yaml index e0beaf3..4049099 100644 --- a/config/rbac/role.yaml +++ b/config/rbac/role.yaml @@ -9,7 +9,7 @@ rules: - apiGroups: - apps.k8s.io resources: - - executionhooks + - executionhook verbs: - create - delete @@ -21,7 +21,7 @@ rules: - apiGroups: - apps.k8s.io resources: - - executionhooks/status + - executionhook/status verbs: - get - patch diff --git a/controllers/executionhook_controller.go b/controllers/executionhook_controller.go index 07a1456..ba3baab 100644 --- a/controllers/executionhook_controller.go +++ b/controllers/executionhook_controller.go @@ -1,4 +1,5 @@ /* +Copyright 2020 The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. @@ -21,9 +22,14 @@ import ( "github.com/go-logr/logr" apierrs "k8s.io/apimachinery/pkg/api/errors" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/runtime" + "k8s.io/client-go/tools/record" ctrl "sigs.k8s.io/controller-runtime" "sigs.k8s.io/controller-runtime/pkg/client" + "sigs.k8s.io/controller-runtime/pkg/controller" + "sigs.k8s.io/execution-hook/util" + "sigs.k8s.io/execution-hook/util/patch" appsv1alpha1 "sigs.k8s.io/execution-hook/api/v1alpha1" ) @@ -33,38 +39,132 @@ type ExecutionHookReconciler struct { client.Client Log logr.Logger Scheme *runtime.Scheme + + controller controller.Controller + recorder record.EventRecorder +} + +func ignoreNotFound(err error) error { + if apierrs.IsNotFound(err) { + return nil + } + return err } -// +kubebuilder:rbac:groups=apps.k8s.io,resources=executionhooks,verbs=get;list;watch;create;update;patch;delete -// +kubebuilder:rbac:groups=apps.k8s.io,resources=executionhooks/status,verbs=get;update;patch +// SetupWithManager sets up executionhook controller with a controller manager +func (r *ExecutionHookReconciler) SetupWithManager(mgr ctrl.Manager, options controller.Options) error { + return ctrl.NewControllerManagedBy(mgr). + WithOptions(options). + For(&appsv1alpha1.ExecutionHook{}). + Complete(r) +} -func (r *ExecutionHookReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) { +// +kubebuilder:rbac:groups=apps.k8s.io,resources=executionhook,verbs=get;list;watch;create;update;patch;delete +// +kubebuilder:rbac:groups=apps.k8s.io,resources=executionhook/status,verbs=get;update;patch + +func (r *ExecutionHookReconciler) Reconcile(req ctrl.Request) (_ ctrl.Result, reterr error) { ctx := context.Background() log := r.Log.WithValues("executionhook", req.NamespacedName) - var hook appsv1alpha1.ExecutionHook - if err := r.Client.Get(ctx, req.NamespacedName, &hook); err != nil { + // Fetch the executionhook instance + hook := &appsv1alpha1.ExecutionHook{} + if err := r.Client.Get(ctx, req.NamespacedName, hook); err != nil { // we'll ignore not-found errors, since they can't be fixed by an immediate // requeue (we'll need to wait for a new notification), and we can get them // on deleted requests. return ctrl.Result{}, ignoreNotFound(err) } - log.Info("retrieved hook", "hook", hook) + patchHelper, err := patch.NewHelper(hook, r.Client) + if err != nil { + return ctrl.Result{}, err + } + + defer func() { + if err := patchHelper.Patch(ctx, hook); err != nil { + if reterr == nil { + reterr = err + } + } + }() + + log.Info("Reconciling hook") + // Reconcile ExecutionHook deletion + if !hook.ObjectMeta.DeletionTimestamp.IsZero() { + return r.reconcileHookDeletion(ctx, hook) + } + + return r.reconcile(ctx, hook) +} + +func (r *ExecutionHookReconciler) reconcileHookDeletion(ctx context.Context, hook *appsv1alpha1.ExecutionHook) (ctrl.Result, error) { + log := r.Log.WithValues("executionhook", fmt.Sprintf("%s/%s", hook.Name, hook.Namespace)) + + log.Info("Reconciling executionhook delete") + // (TODO: ashish-amarnath) if any pending hook actions, return with requeue after 30s + // else remove ourselves from the finalizers and let the object be reclaimed + hook.Finalizers = util.Filter(hook.Finalizers, appsv1alpha1.ExecutionHookFinalizer) + return ctrl.Result{}, nil +} + +func (r *ExecutionHookReconciler) reconcile(ctx context.Context, hook *appsv1alpha1.ExecutionHook) (ctrl.Result, error) { + log := r.Log.WithValues("executionhook", fmt.Sprintf("%s/%s", hook.Name, hook.Namespace)) + + // add ourselves to the finalizer of the ExecutionHook object + if !util.Contains(hook.Finalizers, appsv1alpha1.ExecutionHookFinalizer) { + hook.Finalizers = append(hook.Finalizers, appsv1alpha1.ExecutionHookFinalizer) + } + + log.Info("Fetching", "hook-action", fmt.Sprintf("%s/%s", hook.Namespace, hook.Spec.ActionName)) + //(TODO: ashish-amarnath) lookup hook action associated with this hook + + log.Info("Fetching PodContainerNames to execute HookAction", "action", fmt.Sprintf("%s/%s", hook.Namespace, hook.Spec.ActionName)) + // Find {pod, container} pairs on which to execute hook action podContainerNamesList := hook.Spec.PodSelection.PodContainerNamesList if len(podContainerNamesList) == 0 { + log.Info("Querying PodContainerNames using PodContainerSelector", "selector", hook.Spec.PodSelection.PodContainerSelector) podContainerNamesList = r.podContainerNamesListFromSelector(hook.Spec.PodSelection.PodContainerSelector) } if len(podContainerNamesList) == 0 { - return ctrl.Result{}, fmt.Errorf("PodSelection must define a list of Pods or a Pod selector and a list of container names [%+v]", hook.Spec.PodSelection) + return ctrl.Result{}, + fmt.Errorf("PodSelection [%+v] returned 0 PodContainerNames for execution hook %s/%s with hook action %s/%s", + hook.Spec.PodSelection, hook.Namespace, hook.Name, hook.Spec.ActionName, hook.Namespace) } - // your logic here + log.Info("Running HookAction", "action", fmt.Sprintf("%s/%s", hook.Namespace, hook.Spec.ActionName), "target container count", len(podContainerNamesList)) + + for _, pc := range podContainerNamesList { + r.runHookAction(pc, hook, hook.Spec.ActionName) + } + + log.Info("Returning nil error and empty result") return ctrl.Result{}, nil } +func (r *ExecutionHookReconciler) runHookAction(pc appsv1alpha1.PodContainerNames, hook *appsv1alpha1.ExecutionHook, hookAction string) { + log := r.Log.WithValues("executionhook", fmt.Sprintf("%s/%s", hook.Namespace, hook.Name), "action", fmt.Sprintf("%s/%s", hook.Namespace, hookAction)) + + hookStatuses := []appsv1alpha1.ContainerExecutionHookStatus{} + for _, c := range pc.ContainerNames { + log.Info("Running hookaction", "pod", pc.PodName, "container", c) + // (TODO: ashish-amarnath) run hook action using exec API + result := false + st := metav1.Now() + cs := appsv1alpha1.ContainerExecutionHookStatus{ + PodName: pc.PodName, + ContainerName: c, + Timestamp: &st, + Succeed: &result, + Error: nil, + } + + hookStatuses = append(hookStatuses, cs) + } + hook.Status.HookStatuses = hookStatuses +} + func (r *ExecutionHookReconciler) podContainerNamesListFromSelector(podContainerSelector *appsv1alpha1.PodContainerSelector) []appsv1alpha1.PodContainerNames { if podContainerSelector == nil || podContainerSelector.PodSelector == nil { return []appsv1alpha1.PodContainerNames{} @@ -74,16 +174,3 @@ func (r *ExecutionHookReconciler) podContainerNamesListFromSelector(podContainer return []appsv1alpha1.PodContainerNames{} } - -func (r *ExecutionHookReconciler) SetupWithManager(mgr ctrl.Manager) error { - return ctrl.NewControllerManagedBy(mgr). - For(&appsv1alpha1.ExecutionHook{}). - Complete(r) -} - -func ignoreNotFound(err error) error { - if apierrs.IsNotFound(err) { - return nil - } - return err -} diff --git a/controllers/suite_test.go b/controllers/suite_test.go index 08cdedc..e16edbc 100644 --- a/controllers/suite_test.go +++ b/controllers/suite_test.go @@ -1,4 +1,5 @@ /* +Copyright 2020 The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. diff --git a/go.mod b/go.mod index d16c4a2..1e8ef02 100644 --- a/go.mod +++ b/go.mod @@ -3,15 +3,20 @@ module sigs.k8s.io/execution-hook go 1.13 require ( - github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect - github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d // indirect github.com/go-logr/logr v0.1.0 - github.com/onsi/ginkgo v1.8.0 - github.com/onsi/gomega v1.5.0 - github.com/prometheus/common v0.0.0-20181126121408-4724e9255275 - gopkg.in/alecthomas/kingpin.v2 v2.2.6 // indirect - k8s.io/apimachinery v0.0.0-20191028221656-72ed19daf4bb - k8s.io/client-go v0.0.0-20190918160344-1fbdaa4c8d90 + github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef // indirect + github.com/imdario/mergo v0.3.7 // indirect + github.com/onsi/ginkgo v1.10.1 + github.com/onsi/gomega v1.7.0 + github.com/pkg/errors v0.8.1 + github.com/prometheus/client_golang v1.0.0 // indirect + go.uber.org/atomic v1.4.0 // indirect + go.uber.org/zap v1.10.0 // indirect + golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392 // indirect + golang.org/x/sys v0.0.0-20191105231009-c1f44814a5cd // indirect + gopkg.in/yaml.v2 v2.2.5 // indirect + k8s.io/apiextensions-apiserver v0.0.0-20190918201827-3de75813f604 // indirect + k8s.io/apimachinery v0.17.0 + k8s.io/client-go v0.17.0 sigs.k8s.io/controller-runtime v0.4.0 - sigs.k8s.io/kind v0.6.1 // indirect ) diff --git a/go.sum b/go.sum index bccc93c..8bc557a 100644 --- a/go.sum +++ b/go.sum @@ -3,40 +3,50 @@ cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT cloud.google.com/go v0.38.0 h1:ROfEUZz+Gh5pa62DJWXSaonyu3StP6EA6lPEXPI6mCo= cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8= +github.com/Azure/go-autorest v11.1.2+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24= +github.com/Azure/go-autorest/autorest v0.9.0 h1:MRvx8gncNaXJqOoLmhNjUAKh33JJF8LyxPhomEtOsjs= github.com/Azure/go-autorest/autorest v0.9.0/go.mod h1:xyHB1BMZT0cuDHU7I0+g046+BFDTQ8rEZB0s4Yfa6bI= +github.com/Azure/go-autorest/autorest/adal v0.5.0 h1:q2gDruN08/guU9vAjuPWff0+QIrpH6ediguzdAzXAUU= github.com/Azure/go-autorest/autorest/adal v0.5.0/go.mod h1:8Z9fGy2MpX0PvDjB1pEgQTmVqjGhiHBW7RJJEciWzS0= +github.com/Azure/go-autorest/autorest/date v0.1.0 h1:YGrhWfrgtFs84+h0o46rJrlmsZtyZRg470CqAXTZaGM= github.com/Azure/go-autorest/autorest/date v0.1.0/go.mod h1:plvfp3oPSKwf2DNjlBjWF/7vwR+cUD/ELuzDCXwHUVA= github.com/Azure/go-autorest/autorest/mocks v0.1.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0= github.com/Azure/go-autorest/autorest/mocks v0.2.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0= +github.com/Azure/go-autorest/logger v0.1.0 h1:ruG4BSDXONFRrZZJ2GUXDiUyVpayPmb1GnWeHDdaNKY= github.com/Azure/go-autorest/logger v0.1.0/go.mod h1:oExouG+K6PryycPJfVSxi/koC6LSNgds39diKLz7Vrc= +github.com/Azure/go-autorest/tracing v0.5.0 h1:TRn4WjSnkcSy5AEG3pnbtFSwNtwzjr4VYyQflFE619k= github.com/Azure/go-autorest/tracing v0.5.0/go.mod h1:r/s2XiOKccPW3HrqB+W0TQzfbtp2fGCgRFtBroKn4Dk= +github.com/BurntSushi/toml v0.3.0/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ= github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0= github.com/PuerkitoBio/purell v1.1.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0= +github.com/PuerkitoBio/purell v1.1.1 h1:WEQqlqaGbrPkxLJWfBwQmfEAE1Z7ONdDLqrN38tNFfI= github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0= github.com/PuerkitoBio/urlesc v0.0.0-20160726150825-5bd2802263f2/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE= +github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M= github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE= -github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafoB+tBA3gMyHYHrpOtNuDiK/uB5uXxq5wM= -github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= -github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d h1:UQZhZ2O0vMHr2cI+DC1Mbh0TJxzA3RcLoMsFw+aXw7E= -github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod 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h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4= github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg= github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4= github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA= @@ -229,11 +309,13 @@ github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An github.com/spf13/viper v1.3.2/go.mod h1:ZiWeW+zYFKm7srdB9IoDzzZXaJaI5eL9QjNiN/DMA2s= github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/objx v0.2.0 h1:Hbg2NidpLE8veEBkEZTL3CvlkUIVzuU9jDplZO54c48= github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE= github.com/stretchr/testify v0.0.0-20151208002404-e3a8ff8ce365/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs= github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs= github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q= github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= +github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk= github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4= github.com/tmc/grpc-websocket-proxy v0.0.0-20170815181823-89b8d40f7ca8/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U= github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0= @@ -243,18 +325,27 @@ go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU= go.uber.org/atomic v0.0.0-20181018215023-8dc6146f7569/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE= go.uber.org/atomic v1.3.2 h1:2Oa65PReHzfn29GpvgsYwloV9AVFHPDk8tYxt2c2tr4= go.uber.org/atomic v1.3.2/go.mod 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v0.0.0-20190923035154-9ee001bba392/go.mod h1:/lpIB1dKB+9EgE3H3cr1v9wB50oz8l4C4h62xy7jSTY= golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA= golang.org/x/exp v0.0.0-20190125153040-c74c464bbbf2/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA= golang.org/x/exp v0.0.0-20190312203227-4b39c73a6495/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8= @@ -270,6 +361,7 @@ golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73r golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20181005035420-146acd28ed58/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20181201002055-351d144fa1fc/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= @@ -279,8 +371,11 @@ golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= golang.org/x/net v0.0.0-20190812203447-cdfb69ac37fc h1:gkKoSkUmnU6bpS/VhkuO27bzQeSA51uaEfbOW5dNb68= golang.org/x/net v0.0.0-20190812203447-cdfb69ac37fc/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= +golang.org/x/net v0.0.0-20191004110552-13f9640d40b9 h1:rjwSpXsdiK0dV8/Naq3kAw9ymfAeJIyd0upUIElB+lI= +golang.org/x/net v0.0.0-20191004110552-13f9640d40b9/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s= golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw= +golang.org/x/oauth2 v0.0.0-20190402181905-9f3314589c9a/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw= golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45 h1:SVwTIAaPC2U/AvvLNZ2a7OVsmBpC8L5BlwK1whH3hm0= golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw= golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= @@ -292,7 +387,9 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJ golang.org/x/sys v0.0.0-20170830134202-bb24a47a89ea/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20180117170059-2c42eef0765b/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= +golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= +golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190209173611-3b5209105503/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= @@ -302,17 +399,22 @@ golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7w golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20190616124812-15dcb6c0061f h1:25KHgbfyiSm6vwQLbM3zZIe1v9p/3ea4Rz+nnM5K/i4= golang.org/x/sys v0.0.0-20190616124812-15dcb6c0061f/go.mod 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h1:MQEvx39qSf8vyrx3XRaOe+j1UDIzKwkYOVObRgGPVqI= golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc= golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7 h1:9zdDQZ7Thm29KFXgAX/+yaf3eVbP7djjWp/dXAppNCc= golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0= @@ -337,10 +441,12 @@ google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9Ywl google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= google.golang.org/appengine v1.5.0 h1:KxkO13IPW4Lslp2bz+KHP2E3gtFlrIGNThxkZQ3g+4c= google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= +google.golang.org/genproto v0.0.0-20170731182057-09f6ed296fc6/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= google.golang.org/genproto 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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. diff --git a/hack/tools/go.mod b/hack/tools/go.mod new file mode 100644 index 0000000..c699ae1 --- /dev/null +++ b/hack/tools/go.mod @@ -0,0 +1,8 @@ +module sigs.k8s.io/execution-hook/hack/tools + +go 1.13 + +require ( + sigs.k8s.io/controller-tools v0.2.4 + sigs.k8s.io/kustomize/kustomize/v3 v3.5.3 +) diff --git a/hack/tools/go.sum b/hack/tools/go.sum new file mode 100644 index 0000000..8a50a95 --- /dev/null +++ b/hack/tools/go.sum @@ -0,0 +1,687 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.38.0 h1:ROfEUZz+Gh5pa62DJWXSaonyu3StP6EA6lPEXPI6mCo= +cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= +github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 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v0.0.0-20180604144634-d3ebe8f20ae4 h1:JPJh2pk3+X4lXAkZIk2RuE/7/FoK9maXw+TNPJhVS/c= +sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0= +vbom.ml/util v0.0.0-20160121211510-db5cfe13f5cc/go.mod h1:so/NYdZXCz+E3ZpW0uAoCj6uzU2+8OWDFv/HxUSs7kI= diff --git a/hack/tools/tools.go b/hack/tools/tools.go new file mode 100644 index 0000000..0f47774 --- /dev/null +++ b/hack/tools/tools.go @@ -0,0 +1,25 @@ +// +build tools + +/* +Copyright 2019 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +// This package imports things required by build scripts, to force `go mod` to see them as dependencies +package tools + +import ( + _ "sigs.k8s.io/controller-tools/cmd/controller-gen" + _ "sigs.k8s.io/kustomize/kustomize/v3" +) diff --git a/main.go b/main.go index 1f9f58d..6fd8542 100644 --- a/main.go +++ b/main.go @@ -23,6 +23,7 @@ import ( clientgoscheme "k8s.io/client-go/kubernetes/scheme" _ "k8s.io/client-go/plugin/pkg/client/auth/gcp" ctrl "sigs.k8s.io/controller-runtime" + "sigs.k8s.io/controller-runtime/pkg/controller" "sigs.k8s.io/controller-runtime/pkg/log/zap" appsv1alpha1 "sigs.k8s.io/execution-hook/api/v1alpha1" "sigs.k8s.io/execution-hook/controllers" @@ -42,11 +43,41 @@ func init() { } func main() { - var metricsAddr string - var enableLeaderElection bool - flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.") - flag.BoolVar(&enableLeaderElection, "enable-leader-election", false, - "Enable leader election for controller manager. Enabling this will ensure there is only one active controller manager.") + // flag vars + var ( + metricsAddr string + enableLeaderElection bool + concurrentReconcileCount int + webhookPort int + ) + + flag.StringVar( + &metricsAddr, + "metrics-addr", + ":8080", "The address the metric endpoint binds to.", + ) + + flag.BoolVar( + &enableLeaderElection, + "enable-leader-election", + true, + "Enabling this will ensure there is only one active controller manager. True by default.", + ) + + flag.IntVar( + &concurrentReconcileCount, + "concurrent-reconciles", + 1, + "Number of execution hooks to process concurrently", + ) + + flag.IntVar( + &webhookPort, + "webhook-port", + 0, + "Port at which defaulting and/or validating webhook server servers. Set to 0 to disable. Disabled by default.", + ) + flag.Parse() ctrl.SetLogger(zap.New(func(o *zap.Options) { @@ -57,7 +88,7 @@ func main() { Scheme: scheme, MetricsBindAddress: metricsAddr, LeaderElection: enableLeaderElection, - Port: 9443, + Port: webhookPort, }) if err != nil { setupLog.Error(err, "unable to start manager") @@ -68,7 +99,7 @@ func main() { Client: mgr.GetClient(), Log: ctrl.Log.WithName("controllers").WithName("ExecutionHook"), Scheme: mgr.GetScheme(), - }).SetupWithManager(mgr); err != nil { + }).SetupWithManager(mgr, controller.Options{MaxConcurrentReconciles: concurrentReconcileCount}); err != nil { setupLog.Error(err, "unable to create controller", "controller", "ExecutionHook") os.Exit(1) } diff --git a/util/patch/patch.go b/util/patch/patch.go new file mode 100644 index 0000000..e0dc13c --- /dev/null +++ b/util/patch/patch.go @@ -0,0 +1,169 @@ +/* +Copyright 2020 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package patch + +import ( + "context" + "fmt" + "reflect" + + "github.com/go-logr/logr" + "github.com/pkg/errors" + "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" + "k8s.io/apimachinery/pkg/runtime" + kerrors "k8s.io/apimachinery/pkg/util/errors" + ctrl "sigs.k8s.io/controller-runtime" + "sigs.k8s.io/controller-runtime/pkg/client" +) + +// Helper is a utility for ensuring the proper Patching of resources +// and their status +type Helper struct { + client client.Client + before map[string]interface{} + hasStatus bool + beforeStatus interface{} + resourcePatch client.Patch + statusPatch client.Patch + log logr.Logger +} + +// Debug method +func logInterface(r string, l logr.Logger, o map[string]interface{}) { + l.Info(r) + for k, v := range o { + l.Info(fmt.Sprintf("%q-> %v", k, v)) + } +} + +// NewHelper returns an initialized Helper +func NewHelper(resource runtime.Object, crClient client.Client) (*Helper, error) { + if resource == nil { + return nil, errors.Errorf("expected non-nil resource") + } + logger := ctrl.Log.WithName("patch-helper") + + // If the object is already unstructured, we need to perform a deepcopy first + // because the `DefaultUnstructuredConverter.ToUnstructured` function returns + // the underlying unstructured object map without making a copy. + if _, ok := resource.(runtime.Unstructured); ok { + resource = resource.DeepCopyObject() + } + + // Convert the resource to unstructured for easier comparison later. + before, err := runtime.DefaultUnstructuredConverter.ToUnstructured(resource) + if err != nil { + return nil, err + } + logInterface("before", logger, before) + + hasStatus := false + // attempt to extract the status from the resource for easier comparison later + beforeStatus, ok, err := unstructured.NestedFieldCopy(before, "status") + if err != nil { + return nil, err + } + + logger.Info(fmt.Sprintf("beforeStatus: %v", beforeStatus)) + if ok { + hasStatus = true + // if the resource contains a status remove it from our unstructured copy + // to avoid unnecessary patching later + unstructured.RemoveNestedField(before, "status") + logInterface("before-status-removed", logger, before) + } + + return &Helper{ + client: crClient, + before: before, + beforeStatus: beforeStatus, + hasStatus: hasStatus, + resourcePatch: client.MergeFrom(resource.DeepCopyObject()), + statusPatch: client.MergeFrom(resource.DeepCopyObject()), + log: logger, + }, nil +} + +// Patch will attempt to patch the given resource and its status +func (h *Helper) Patch(ctx context.Context, resource runtime.Object) error { + h.log.Info("patching", "object", resource.GetObjectKind()) + if resource == nil { + return errors.Errorf("expected non-nil resource") + } + + // If the object is already unstructured, we need to perform a deepcopy first + // because the `DefaultUnstructuredConverter.ToUnstructured` function returns + // the underlying unstructured object map without making a copy. + if _, ok := resource.(runtime.Unstructured); ok { + resource = resource.DeepCopyObject() + h.log.Info("deepcopied resource") + } + + // Convert the resource to unstructured to compare against our before copy. + after, err := runtime.DefaultUnstructuredConverter.ToUnstructured(resource) + if err != nil { + return err + } + h.log.Info("converted to unstructured resource") + logInterface("after", h.log, after) + + hasStatus := false + // attempt to extract the status from the resource to compare against our + // beforeStatus copy + afterStatus, ok, err := unstructured.NestedFieldCopy(after, "status") + if err != nil { + return err + } + h.log.Info("copied status to after status") + h.log.Info(fmt.Sprintf("afterStatus: %v", afterStatus)) + if ok { + hasStatus = true + // if the resource contains a status remove it from our unstructured copy + // to avoid unnecessary patching. + unstructured.RemoveNestedField(after, "status") + h.log.Info("removed status from after status") + logInterface("after-status-removed", h.log, after) + } + + var errs []error + + if !reflect.DeepEqual(h.before, after) { + // only issue a Patch if the before and after resources (minus status) differ + h.log.Info("applying-patch") + if err := h.client.Patch(ctx, resource.DeepCopyObject(), h.resourcePatch); err != nil { + h.log.Error(err, "failed to patch resource") + errs = append(errs, err) + } + h.log.Info("patched resource", "errCount", len(errs)) + } + + if (h.hasStatus || hasStatus) && !reflect.DeepEqual(h.beforeStatus, afterStatus) { + h.log.Info("patching resource status") + h.log.Info(fmt.Sprintf("beforeStatus: %v", h.beforeStatus)) + h.log.Info(fmt.Sprintf("afterStatus: %v", afterStatus)) + // only issue a Status Patch if the resource has a status and the beforeStatus + // and afterStatus copies differ + if err := h.client.Status().Patch(ctx, resource.DeepCopyObject(), h.statusPatch); err != nil { + h.log.Error(err, "failed to patch resource status") + errs = append(errs, err) + } + } + + h.log.Info("finished patching", "len(errs)", len(errs)) + + return kerrors.NewAggregate(errs) +} diff --git a/util/util.go b/util/util.go new file mode 100644 index 0000000..7854502 --- /dev/null +++ b/util/util.go @@ -0,0 +1,38 @@ +/* +Copyright 2020 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package util + +// Contains returns true if the slice contains string. +func Contains(s []string, k string) bool { + for _, i := range s { + if i == k { + return true + } + } + return false +} + +// Filter filters string from the slice. +func Filter(s []string, k string) []string { + f := []string{} + for _, i := range s { + if i != k { + f = append(f, i) + } + } + return f +} From b72a53a0ec24d5eadef11842b5efbd065e8526c1 Mon Sep 17 00:00:00 2001 From: Ashish Amarnath Date: Fri, 3 Jan 2020 12:04:21 -0800 Subject: [PATCH 3/7] implement podSelection and add unit tests Signed-off-by: Ashish Amarnath --- controllers/executionhook_controller.go | 113 +++++--- controllers/executionhook_controller_test.go | 266 +++++++++++++++++++ go.mod | 1 + util/patch/patch.go | 30 +-- util/patch/patch_test.go | 213 +++++++++++++++ util/util_test.go | 106 ++++++++ 6 files changed, 682 insertions(+), 47 deletions(-) create mode 100644 controllers/executionhook_controller_test.go create mode 100644 util/patch/patch_test.go create mode 100644 util/util_test.go diff --git a/controllers/executionhook_controller.go b/controllers/executionhook_controller.go index ba3baab..4ae7386 100644 --- a/controllers/executionhook_controller.go +++ b/controllers/executionhook_controller.go @@ -21,6 +21,8 @@ import ( "fmt" "github.com/go-logr/logr" + "github.com/pkg/errors" + corev1 "k8s.io/api/core/v1" apierrs "k8s.io/apimachinery/pkg/api/errors" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/runtime" @@ -53,10 +55,18 @@ func ignoreNotFound(err error) error { // SetupWithManager sets up executionhook controller with a controller manager func (r *ExecutionHookReconciler) SetupWithManager(mgr ctrl.Manager, options controller.Options) error { - return ctrl.NewControllerManagedBy(mgr). + c, err := ctrl.NewControllerManagedBy(mgr). WithOptions(options). For(&appsv1alpha1.ExecutionHook{}). - Complete(r) + Build(r) + if err != nil { + return errors.Wrap(err, "failed setting up with a controller manager") + } + + r.controller = c + r.recorder = mgr.GetEventRecorderFor("execution-hook-controller") + + return nil } // +kubebuilder:rbac:groups=apps.k8s.io,resources=executionhook,verbs=get;list;watch;create;update;patch;delete @@ -101,55 +111,104 @@ func (r *ExecutionHookReconciler) reconcileHookDeletion(ctx context.Context, hoo log := r.Log.WithValues("executionhook", fmt.Sprintf("%s/%s", hook.Name, hook.Namespace)) log.Info("Reconciling executionhook delete") - // (TODO: ashish-amarnath) if any pending hook actions, return with requeue after 30s + // TODO (ashish-amarnath): if any pending hook actions, return with requeue after 30s // else remove ourselves from the finalizers and let the object be reclaimed hook.Finalizers = util.Filter(hook.Finalizers, appsv1alpha1.ExecutionHookFinalizer) return ctrl.Result{}, nil } func (r *ExecutionHookReconciler) reconcile(ctx context.Context, hook *appsv1alpha1.ExecutionHook) (ctrl.Result, error) { - log := r.Log.WithValues("executionhook", fmt.Sprintf("%s/%s", hook.Name, hook.Namespace)) + hookName := fmt.Sprintf("%s/%s", hook.Name, hook.Namespace) + actionName := fmt.Sprintf("%s/%s", hook.Namespace, hook.Spec.ActionName) + log := r.Log.WithValues("executionhook", hookName, "action", actionName) // add ourselves to the finalizer of the ExecutionHook object if !util.Contains(hook.Finalizers, appsv1alpha1.ExecutionHookFinalizer) { hook.Finalizers = append(hook.Finalizers, appsv1alpha1.ExecutionHookFinalizer) } - log.Info("Fetching", "hook-action", fmt.Sprintf("%s/%s", hook.Namespace, hook.Spec.ActionName)) - //(TODO: ashish-amarnath) lookup hook action associated with this hook + log.Info("Looking up hook-action") + //(TODO ashish-amarnath): lookup hook action associated with this hook - log.Info("Fetching PodContainerNames to execute HookAction", "action", fmt.Sprintf("%s/%s", hook.Namespace, hook.Spec.ActionName)) - // Find {pod, container} pairs on which to execute hook action - podContainerNamesList := hook.Spec.PodSelection.PodContainerNamesList - if len(podContainerNamesList) == 0 { - log.Info("Querying PodContainerNames using PodContainerSelector", "selector", hook.Spec.PodSelection.PodContainerSelector) - podContainerNamesList = r.podContainerNamesListFromSelector(hook.Spec.PodSelection.PodContainerSelector) + log.Info("Selecting PodContainerNames to run hook-action") + podContainerNamesList, err := r.selectPodContainers(hook.Namespace, &hook.Spec.PodSelection) + if err != nil { + return ctrl.Result{}, errors.Wrapf(err, + "failed to select podContainerNames to run hook action %s while reconciling execution-hook %s", actionName, hookName) } - if len(podContainerNamesList) == 0 { - return ctrl.Result{}, - fmt.Errorf("PodSelection [%+v] returned 0 PodContainerNames for execution hook %s/%s with hook action %s/%s", - hook.Spec.PodSelection, hook.Namespace, hook.Name, hook.Spec.ActionName, hook.Namespace) + log.Info("Nothing to do, PodSelection returned 0 PodContainerNames for execution hook", + "podSelection", fmt.Sprintf("[%v]", hook.Spec.PodSelection)) + return ctrl.Result{}, nil } - log.Info("Running HookAction", "action", fmt.Sprintf("%s/%s", hook.Namespace, hook.Spec.ActionName), "target container count", len(podContainerNamesList)) + log.Info("Running HookAction", "targetContainerCount", len(podContainerNamesList)) for _, pc := range podContainerNamesList { r.runHookAction(pc, hook, hook.Spec.ActionName) } + return ctrl.Result{}, nil +} - log.Info("Returning nil error and empty result") +func (r *ExecutionHookReconciler) selectPodContainers(ns string, ps *appsv1alpha1.PodSelection) ([]appsv1alpha1.PodContainerNames, error) { + if ps == nil { + return nil, errors.Errorf("Cannot use nil podSelection to select podContainers") + } - return ctrl.Result{}, nil + if ps.PodContainerNamesList != nil && len(ps.PodContainerNamesList) > 0 { + return ps.PodContainerNamesList, nil + } + + if ps.PodContainerSelector.PodSelector == nil { + return []appsv1alpha1.PodContainerNames{}, nil + } + + labelSelector, err := metav1.LabelSelectorAsSelector(ps.PodContainerSelector.PodSelector) + if err != nil { + return nil, errors.Wrapf(err, "failed to convert labelSelector to type slector") + } + r.Log.Info("Querying pods matching", "namespace", ns, "label-selector", labelSelector.String()) + listOpts := &client.ListOptions{ + LabelSelector: labelSelector, + } + + res := []appsv1alpha1.PodContainerNames{} + for { + podList := corev1.PodList{} + err := r.Client.List(context.TODO(), &podList, client.InNamespace(ns), listOpts) + if err != nil { + errMsg := fmt.Sprintf("failed to list pods in namespace %s matching labelselector %q", ns, labelSelector) + return nil, errors.Wrapf(err, errMsg) + } + + for _, p := range podList.Items { + containers := []string{} + for _, c := range p.Spec.Containers { + containers = append(containers, c.Name) + } + pcn := appsv1alpha1.PodContainerNames{ + PodName: p.Name, + ContainerNames: containers, + } + res = append(res, pcn) + } + if podList.Continue == "" { + break + } + } + + return res, nil } func (r *ExecutionHookReconciler) runHookAction(pc appsv1alpha1.PodContainerNames, hook *appsv1alpha1.ExecutionHook, hookAction string) { - log := r.Log.WithValues("executionhook", fmt.Sprintf("%s/%s", hook.Namespace, hook.Name), "action", fmt.Sprintf("%s/%s", hook.Namespace, hookAction)) + hookName := fmt.Sprintf("%s/%s", hook.Name, hook.Namespace) + actionName := fmt.Sprintf("%s/%s", hook.Namespace, hook.Spec.ActionName) + log := r.Log.WithValues("executionhook", hookName, "action", actionName) hookStatuses := []appsv1alpha1.ContainerExecutionHookStatus{} for _, c := range pc.ContainerNames { - log.Info("Running hookaction", "pod", pc.PodName, "container", c) - // (TODO: ashish-amarnath) run hook action using exec API + log.Info("Running hookaction on", "pod", pc.PodName, "container", c) + // TODO (ashish-amarnath): run hook action using exec API result := false st := metav1.Now() cs := appsv1alpha1.ContainerExecutionHookStatus{ @@ -164,13 +223,3 @@ func (r *ExecutionHookReconciler) runHookAction(pc appsv1alpha1.PodContainerName } hook.Status.HookStatuses = hookStatuses } - -func (r *ExecutionHookReconciler) podContainerNamesListFromSelector(podContainerSelector *appsv1alpha1.PodContainerSelector) []appsv1alpha1.PodContainerNames { - if podContainerSelector == nil || podContainerSelector.PodSelector == nil { - return []appsv1alpha1.PodContainerNames{} - } - - // TODO: query pods using selector and return list of PodContainerNames for matching Pods - - return []appsv1alpha1.PodContainerNames{} -} diff --git a/controllers/executionhook_controller_test.go b/controllers/executionhook_controller_test.go new file mode 100644 index 0000000..adfafbd --- /dev/null +++ b/controllers/executionhook_controller_test.go @@ -0,0 +1,266 @@ +/* +Copyright 2020 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package controllers + +import ( + . "github.com/onsi/ginkgo" + . "github.com/onsi/gomega" + corev1 "k8s.io/api/core/v1" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/runtime" + "sigs.k8s.io/controller-runtime/pkg/client/fake" + "sigs.k8s.io/controller-runtime/pkg/log" + + appsv1alpha1 "sigs.k8s.io/execution-hook/api/v1alpha1" +) + +func getTestPods() []runtime.Object { + return []runtime.Object{ + &corev1.Pod{ + ObjectMeta: metav1.ObjectMeta{ + Name: "app1-1", + Namespace: "test-ns", + Labels: map[string]string{ + "app": "app1", + "owner": "admin", + "environment": "prod", + }, + }, + Spec: corev1.PodSpec{ + Containers: []corev1.Container{ + { + Name: "my-awesome-app", + }, + { + Name: "auth-proxy", + }, + { + Name: "metrics-proxy", + }, + { + Name: "rbac-proxy", + }, + }, + }, + }, + &corev1.Pod{ + ObjectMeta: metav1.ObjectMeta{ + Name: "app1-1", + Namespace: "super-ns", + Labels: map[string]string{ + "app": "app1", + "owner": "admin", + "environment": "prod", + }, + }, + Spec: corev1.PodSpec{ + Containers: []corev1.Container{ + { + Name: "my-awesome-app", + }, + { + Name: "auth-proxy", + }, + { + Name: "metrics-proxy", + }, + { + Name: "rbac-proxy", + }, + }, + }, + }, + &corev1.Pod{ + ObjectMeta: metav1.ObjectMeta{ + Name: "app1-2", + Namespace: "test-ns", + Labels: map[string]string{ + "app": "app1", + "owner": "admin", + "environment": "test", + }, + }, + Spec: corev1.PodSpec{ + Containers: []corev1.Container{ + { + Name: "my-awesome-app", + }, + { + Name: "auth-proxy", + }, + { + Name: "metrics-proxy", + }, + { + Name: "rbac-proxy", + }, + }, + }, + Status: corev1.PodStatus{ + Phase: corev1.PodPending, + }, + }, + } +} + +var _ = Describe("selectPodContainers", func() { + BeforeEach(func() {}) + AfterEach(func() {}) + + Context("Select PodContainer to run execution hook action", func() { + It("should returns nil result and error when PodSelection is nil", func() { + r := &ExecutionHookReconciler{ + Client: k8sClient, + Log: log.Log, + } + actual, err := r.selectPodContainers("test-ns", nil) + Expect(err).NotTo(BeNil()) + Expect(actual).To(BeNil()) + }) + It("should returns empty result and nil error when label selector in the PodSelection.PodSelector is nil", func() { + r := &ExecutionHookReconciler{ + Client: k8sClient, + Log: log.Log, + } + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: nil, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: nil, + }, + } + actual, err := r.selectPodContainers("test-ns", &podSelector) + Expect(err).To(BeNil()) + Expect(actual).To(BeEmpty()) + + }) + It("should return pod with multiple containers matching labelSelector with MatchLables only", func() { + // setup test pods + objs := getTestPods() + + r := &ExecutionHookReconciler{ + Client: fake.NewFakeClient(objs...), + Log: log.Log, + } + + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: nil, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: &metav1.LabelSelector{ + MatchLabels: map[string]string{ + "app": "app1", + "owner": "admin", + }, + }, + }, + } + + podContainers, err := r.selectPodContainers("test-ns", &podSelector) + expected := []appsv1alpha1.PodContainerNames{ + { + PodName: "app1-1", + ContainerNames: []string{"my-awesome-app", "auth-proxy", "metrics-proxy", "rbac-proxy"}, + }, + { + PodName: "app1-2", + ContainerNames: []string{"my-awesome-app", "auth-proxy", "metrics-proxy", "rbac-proxy"}, + }, + } + + Expect(err).To(BeNil()) + Expect(podContainers).To(BeEquivalentTo(expected)) + }) + + It("Should return pod with multiple containers matching labelSelector with MatchLables and MatchExpressions", func() { + objs := getTestPods() + r := &ExecutionHookReconciler{ + Client: fake.NewFakeClient(objs...), + Log: log.Log, + } + + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: nil, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: &metav1.LabelSelector{ + MatchLabels: map[string]string{ + "app": "app1", + "owner": "admin", + }, + MatchExpressions: []metav1.LabelSelectorRequirement{ + { + Key: "environment", + Operator: metav1.LabelSelectorOpNotIn, + Values: []string{"test", "staging"}, + }, + }, + }, + }, + } + + podContainers, err := r.selectPodContainers("test-ns", &podSelector) + expected := []appsv1alpha1.PodContainerNames{ + {PodName: "app1-1", + ContainerNames: []string{"my-awesome-app", "auth-proxy", "metrics-proxy", "rbac-proxy"}}, + } + + Expect(err).To(BeNil()) + Expect(podContainers).To(BeEquivalentTo(expected)) + }) + + It("should return podContainerNamesList when supplied", func() { + objs := getTestPods() + r := &ExecutionHookReconciler{ + Client: fake.NewFakeClient(objs...), + Log: log.Log, + } + + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: []appsv1alpha1.PodContainerNames{ + { + PodName: "some-random=pod", + ContainerNames: []string{"c1", "c2", "c3"}, + }, + }, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: &metav1.LabelSelector{ + MatchLabels: map[string]string{ + "app": "app1", + "owner": "admin", + }, + MatchExpressions: []metav1.LabelSelectorRequirement{ + { + Key: "environment", + Operator: metav1.LabelSelectorOpNotIn, + Values: []string{"test", "staging"}, + }, + }, + }, + }, + } + + acutal, err := r.selectPodContainers("test-ns", &podSelector) + expected := []appsv1alpha1.PodContainerNames{ + { + PodName: "some-random=pod", + ContainerNames: []string{"c1", "c2", "c3"}, + }, + } + Expect(err).To(BeNil()) + Expect(acutal).To(BeEquivalentTo(expected)) + + }) + }) +}) diff --git a/go.mod b/go.mod index 1e8ef02..efa06bf 100644 --- a/go.mod +++ b/go.mod @@ -15,6 +15,7 @@ require ( golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392 // indirect golang.org/x/sys v0.0.0-20191105231009-c1f44814a5cd // indirect gopkg.in/yaml.v2 v2.2.5 // indirect + k8s.io/api v0.17.0 k8s.io/apiextensions-apiserver v0.0.0-20190918201827-3de75813f604 // indirect k8s.io/apimachinery v0.17.0 k8s.io/client-go v0.17.0 diff --git a/util/patch/patch.go b/util/patch/patch.go index e0dc13c..6db79b5 100644 --- a/util/patch/patch.go +++ b/util/patch/patch.go @@ -44,9 +44,9 @@ type Helper struct { // Debug method func logInterface(r string, l logr.Logger, o map[string]interface{}) { - l.Info(r) + l.V(8).Info(r) for k, v := range o { - l.Info(fmt.Sprintf("%q-> %v", k, v)) + l.V(8).Info(fmt.Sprintf("%q-> %v", k, v)) } } @@ -78,7 +78,7 @@ func NewHelper(resource runtime.Object, crClient client.Client) (*Helper, error) return nil, err } - logger.Info(fmt.Sprintf("beforeStatus: %v", beforeStatus)) + logger.V(6).Info(fmt.Sprintf("beforeStatus: %v", beforeStatus)) if ok { hasStatus = true // if the resource contains a status remove it from our unstructured copy @@ -100,7 +100,7 @@ func NewHelper(resource runtime.Object, crClient client.Client) (*Helper, error) // Patch will attempt to patch the given resource and its status func (h *Helper) Patch(ctx context.Context, resource runtime.Object) error { - h.log.Info("patching", "object", resource.GetObjectKind()) + h.log.V(6).Info("patching", "object", resource.GetObjectKind()) if resource == nil { return errors.Errorf("expected non-nil resource") } @@ -110,7 +110,7 @@ func (h *Helper) Patch(ctx context.Context, resource runtime.Object) error { // the underlying unstructured object map without making a copy. if _, ok := resource.(runtime.Unstructured); ok { resource = resource.DeepCopyObject() - h.log.Info("deepcopied resource") + h.log.V(6).Info("deepcopied resource") } // Convert the resource to unstructured to compare against our before copy. @@ -118,7 +118,7 @@ func (h *Helper) Patch(ctx context.Context, resource runtime.Object) error { if err != nil { return err } - h.log.Info("converted to unstructured resource") + h.log.V(6).Info("converted to unstructured resource") logInterface("after", h.log, after) hasStatus := false @@ -128,14 +128,14 @@ func (h *Helper) Patch(ctx context.Context, resource runtime.Object) error { if err != nil { return err } - h.log.Info("copied status to after status") - h.log.Info(fmt.Sprintf("afterStatus: %v", afterStatus)) + h.log.V(6).Info("copied status to after status") + h.log.V(6).Info(fmt.Sprintf("afterStatus: %v", afterStatus)) if ok { hasStatus = true // if the resource contains a status remove it from our unstructured copy // to avoid unnecessary patching. unstructured.RemoveNestedField(after, "status") - h.log.Info("removed status from after status") + h.log.V(6).Info("removed status from after status") logInterface("after-status-removed", h.log, after) } @@ -143,18 +143,18 @@ func (h *Helper) Patch(ctx context.Context, resource runtime.Object) error { if !reflect.DeepEqual(h.before, after) { // only issue a Patch if the before and after resources (minus status) differ - h.log.Info("applying-patch") + h.log.V(6).Info("applying-patch") if err := h.client.Patch(ctx, resource.DeepCopyObject(), h.resourcePatch); err != nil { h.log.Error(err, "failed to patch resource") errs = append(errs, err) } - h.log.Info("patched resource", "errCount", len(errs)) + h.log.V(6).Info("patched resource", "errCount", len(errs)) } if (h.hasStatus || hasStatus) && !reflect.DeepEqual(h.beforeStatus, afterStatus) { - h.log.Info("patching resource status") - h.log.Info(fmt.Sprintf("beforeStatus: %v", h.beforeStatus)) - h.log.Info(fmt.Sprintf("afterStatus: %v", afterStatus)) + h.log.V(6).Info("patching resource status") + h.log.V(6).Info(fmt.Sprintf("beforeStatus: %v", h.beforeStatus)) + h.log.V(6).Info(fmt.Sprintf("afterStatus: %v", afterStatus)) // only issue a Status Patch if the resource has a status and the beforeStatus // and afterStatus copies differ if err := h.client.Status().Patch(ctx, resource.DeepCopyObject(), h.statusPatch); err != nil { @@ -163,7 +163,7 @@ func (h *Helper) Patch(ctx context.Context, resource runtime.Object) error { } } - h.log.Info("finished patching", "len(errs)", len(errs)) + h.log.V(6).Info("finished patching", "len(errs)", len(errs)) return kerrors.NewAggregate(errs) } diff --git a/util/patch/patch_test.go b/util/patch/patch_test.go new file mode 100644 index 0000000..6441191 --- /dev/null +++ b/util/patch/patch_test.go @@ -0,0 +1,213 @@ +/* +Copyright 2017 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package patch + +import ( + "context" + "reflect" + "testing" + "time" + + . "github.com/onsi/gomega" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/types" + "k8s.io/client-go/kubernetes/scheme" + "sigs.k8s.io/controller-runtime/pkg/client/fake" + appsv1alpha1 "sigs.k8s.io/execution-hook/api/v1alpha1" +) + +const ( + timeout = time.Second * 10 +) + +func TestHelperPatchExecutionHook(t *testing.T) { + testCases := []struct { + name string + before *appsv1alpha1.ExecutionHook + after *appsv1alpha1.ExecutionHook + hookNamespacedName types.NamespacedName + wantErr bool + }{ + { + name: "No change between before and after", + hookNamespacedName: types.NamespacedName{ + Name: "test-exechook", + Namespace: "test-namespace", + }, + before: &appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Name: "test-exechook", + Namespace: "test-namespace", + }, + Spec: appsv1alpha1.ExecutionHookSpec{ + ActionName: "exec-action1", + }, + }, + after: &appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Name: "test-exechook", + Namespace: "test-namespace", + }, + Spec: appsv1alpha1.ExecutionHookSpec{ + ActionName: "exec-action1", + }, + }, + }, + { + name: "Only remove finalizer update", + hookNamespacedName: types.NamespacedName{ + Name: "test-exechook", + Namespace: "test-namespace", + }, + before: &appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Name: "test-executionhook", + Namespace: "test-namespace", + Finalizers: []string{ + appsv1alpha1.ExecutionHookFinalizer, + }, + }, + }, + after: &appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Name: "test-executionhook", + Namespace: "test-namespace", + }, + }, + }, + { + name: "Only spec update", + hookNamespacedName: types.NamespacedName{ + Name: "test-exechook", + Namespace: "test-namespace", + }, + before: &appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Name: "test-executionhook", + Namespace: "test-namespace", + }, + }, + after: &appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Name: "test-executionhook", + Namespace: "test-namespace", + }, + Spec: appsv1alpha1.ExecutionHookSpec{ + ActionName: "test-action", + PodSelection: appsv1alpha1.PodSelection{ + PodContainerNamesList: []appsv1alpha1.PodContainerNames{ + { + PodName: "test-exechook-pod-1", + ContainerNames: []string{"c1", "c2", "c3"}, + }, + { + PodName: "test-exechook-pod-2", + ContainerNames: []string{"c1", "c2", "c3"}, + }, + }, + }, + }, + }, + }, + { + name: "Only status update", + hookNamespacedName: types.NamespacedName{ + Name: "test-exechook", + Namespace: "test-namespace", + }, + before: &appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Name: "test-executionhook", + Namespace: "test-namespace", + }, + }, + after: &appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Name: "test-executionhook", + Namespace: "test-namespace", + }, + Status: appsv1alpha1.ExecutionHookStatus{ + HookStatuses: []appsv1alpha1.ContainerExecutionHookStatus{ + { + PodName: "exechook-pod", + ContainerName: "exechook-container", + }, + }, + }, + }, + }, + { + name: "Update spec and status", + hookNamespacedName: types.NamespacedName{ + Name: "test-exechook", + Namespace: "test-namespace", + }, + before: &appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Name: "test-executionhook", + Namespace: "test-namespace", + }, + }, + after: &appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Name: "test-executionhook", + Namespace: "test-namespace", + Finalizers: []string{ + appsv1alpha1.ExecutionHookFinalizer, + }, + }, + Status: appsv1alpha1.ExecutionHookStatus{ + HookStatuses: []appsv1alpha1.ContainerExecutionHookStatus{ + { + PodName: "exechook-pod", + ContainerName: "exechook-container-1", + }, + {PodName: "exechook-pod", + ContainerName: "exechook-container-2", + }, + }, + }, + }, + }, + } + for _, tc := range testCases { + t.Run(tc.name, func(t *testing.T) { + g := NewWithT(t) + + g.Expect(appsv1alpha1.AddToScheme(scheme.Scheme)).To(Succeed()) + ctx := context.Background() + fakeClient := fake.NewFakeClientWithScheme(scheme.Scheme) + + beforeCopy := tc.before.DeepCopyObject() + g.Expect(fakeClient.Create(ctx, beforeCopy)).To(Succeed()) + + h, err := NewHelper(beforeCopy, fakeClient) + if err != nil { + t.Fatalf("Expected no error initializing helper: %v", err) + } + + afterCopy := tc.after.DeepCopyObject() + if err := h.Patch(ctx, afterCopy); (err != nil) != tc.wantErr { + t.Errorf("Helper.Patch() error = %v, wantErr %v", err, tc.wantErr) + } + + if !reflect.DeepEqual(tc.after, afterCopy) { + t.Errorf("Expected after to be the same after patching\n tc.after: %v\n afterCopy: %v\n", tc.after, afterCopy) + } + }) + } +} diff --git a/util/util_test.go b/util/util_test.go new file mode 100644 index 0000000..2efa405 --- /dev/null +++ b/util/util_test.go @@ -0,0 +1,106 @@ +/* +Copyright 2020 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package util + +import "testing" + +func TestContains(t *testing.T) { + testCases := []struct { + name string + list []string + key string + expectedResult bool + }{ + { + name: "Contains should find key", + list: []string{"fox", "dog", "cat"}, + key: "dog", + expectedResult: true, + }, + { + name: "Contains should not find key", + list: []string{"fox", "dog", "cat"}, + key: "owl", + expectedResult: false, + }, + { + name: "Contains in an empty slice", + list: []string{}, + key: "key", + expectedResult: false, + }, + { + name: "Contains in a nil slice", + list: nil, + key: "key", + expectedResult: false, + }, + } + + for _, tc := range testCases { + actual := Contains(tc.list, tc.key) + if actual != tc.expectedResult { + t.Fatalf("%s failed, Want: %t; Got: %t", tc.name, tc.expectedResult, actual) + } + + } +} + +func TestFilter(t *testing.T) { + testCases := []struct { + name string + list []string + filter string + expected []string + }{ + { + name: "Filter should remove the filter string from the slice", + list: []string{"dog", "cat", "fox", "pig"}, + filter: "fox", + expected: []string{"dog", "cat", "pig"}, + }, + { + name: "Filter should not remove anything string from the slice", + list: []string{"dog", "cat", "fox", "pig"}, + filter: "owl", + expected: []string{"dog", "cat", "fox", "pig"}, + }, + { + name: "Filter should not remove anything string from an empty slice", + list: []string{}, + filter: "owl", + expected: []string{}, + }, + { + name: "Filter should not remove anything string from a nil slice", + list: nil, + filter: "owl", + expected: []string{}, + }, + } + for _, tc := range testCases { + actual := Filter(tc.list, tc.filter) + if len(actual) != len(tc.expected) { + t.Fatalf("%s failed, Want: %d; Got: %d ", tc.name, len(tc.expected), len(actual)) + } + for _, e := range tc.expected { + if !Contains(actual, e) { + t.Fatalf("%s failed, Want: %q, Got: %q", tc.name, tc.expected, actual) + } + } + } +} From 307d1f1511ba67d0d90e07e2b4e5826f89ac0041 Mon Sep 17 00:00:00 2001 From: Ashish Amarnath Date: Fri, 3 Jan 2020 15:40:38 -0800 Subject: [PATCH 4/7] implement hookaction api and update RBAC Signed-off-by: Ashish Amarnath untested change Signed-off-by: Ashish Amarnath --- Makefile | 58 ++++--- PROJECT | 3 + api/v1alpha1/hookaction_types.go | 66 ++++++++ api/v1alpha1/zz_generated.deepcopy.go | 58 +++++++ config/crd/bases/apps.k8s.io_hookaction.yaml | 149 ++++++++++++++++++ config/crd/kustomization.yaml | 3 + .../patches/cainjection_in_hookactions.yaml | 8 + .../crd/patches/webhook_in_hookactions.yaml | 17 ++ config/rbac/hookaction_editor_role.yaml | 26 +++ config/rbac/hookaction_viewer_role.yaml | 20 +++ config/rbac/role.yaml | 28 ++++ config/samples/apps_v1alpha1_hookaction.yaml | 9 ++ controllers/executionhook_controller.go | 54 ++++++- controllers/hookactionutil/util.go | 50 ++++++ 14 files changed, 523 insertions(+), 26 deletions(-) create mode 100644 api/v1alpha1/hookaction_types.go create mode 100644 config/crd/bases/apps.k8s.io_hookaction.yaml create mode 100644 config/crd/patches/cainjection_in_hookactions.yaml create mode 100644 config/crd/patches/webhook_in_hookactions.yaml create mode 100644 config/rbac/hookaction_editor_role.yaml create mode 100644 config/rbac/hookaction_viewer_role.yaml create mode 100644 config/samples/apps_v1alpha1_hookaction.yaml create mode 100644 controllers/hookactionutil/util.go diff --git a/Makefile b/Makefile index 80ae84d..6e756a1 100644 --- a/Makefile +++ b/Makefile @@ -12,9 +12,11 @@ # See the License for the specific language governing permissions and # limitations under the License. +.DEFAULT_GOAL:=help + REGISTRY ?= quay.io/ashish_amarnath IMAGE_NAME ?= executionhook-controller -TAG ?= dev-20191227-02 +TAG ?= dev # Image URL to use all building/pushing image targets CONTROLLER_IMAGE ?= $(REGISTRY)/$(IMAGE_NAME):$(TAG) # Produce CRDs that work back to Kubernetes 1.11 (no version conversion) @@ -34,53 +36,71 @@ $(CONTROLLER_GEN): $(TOOLS_DIR)/go.mod $(KUSTOMIZE): $(TOOLS_DIR)/go.mod cd $(TOOLS_DIR); go build -tags=tools -o ./bin/kustomize sigs.k8s.io/kustomize/kustomize/v3 +.PHONY: help +help: ## Display this help + @awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n make \033[36m\033[0m\n"} /^[a-zA-Z_-]+:.*?##/ { printf " \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST) + +.PHONY: clean-bin +clean-bin: ## Remove all generated binaries + rm -rf bin + rm -rf hack/tools/bin + .PHONY: all all: manager .PHONY: test -test: generate fmt vet manifests # Run tests +test: generate fmt vet manifests ## Run tests go test ./... -coverprofile cover.out .PHONY: manager -manager: generate fmt vet # Build manager binary +manager: generate fmt vet test ## Build manager binary go build -o bin/manager main.go -.PHONY: run -run: generate fmt vet manifests # Run against the configured Kubernetes cluster in ~/.kube/config - go run ./main.go - .PHONY: install -install: manifests $(KUSTOMIZE) # Install CRDs into a cluster +install: manifests $(KUSTOMIZE) ## Install CRDs into a cluster in the current context at ~/.kube/config $(KUSTOMIZE) build config/crd | kubectl apply -f - .PHONY: uninstall -uninstall: manifests $(KUSTOMIZE) # Uninstall CRDs from a cluster +uninstall: manifests $(KUSTOMIZE) ## Uninstall latest version of CRDs from a cluster in the current context at ~/.kube/config $(KUSTOMIZE) build config/crd | kubectl delete -f - .PHONY: deploy -# Deploy controller in the configured Kubernetes cluster in ~/.kube/config # hacky, works for now. TODO: ashish-amarnath make this better -deploy: manifests $(KUSTOMIZE) +deploy: manifests $(KUSTOMIZE) ## Deploy controller in the configured Kubernetes cluster in ~/.kube/config cd config/manager && ../../$(KUSTOMIZE) edit set image controller=${CONTROLLER_IMAGE} $(KUSTOMIZE) build config/default | kubectl apply -f - .PHONY: manifests -# Generate manifests e.g. CRD, RBAC etc. -manifests: $(CONTROLLER_GEN) +manifests: $(CONTROLLER_GEN) ## Generate manifests e.g. CRD, RBAC etc. $(CONTROLLER_GEN) $(CRD_OPTIONS) rbac:roleName=manager-role webhook paths="./..." output:crd:artifacts:config=config/crd/bases -# Run go fmt against code -fmt: +fmt: ## Run go fmt against code go fmt ./... -# Run go vet against code -vet: +vet: ## Run go vet against code go vet ./... -# Generate code -generate: $(CONTROLLER_GEN) +.PHONY: modules +modules: ## Runs go mod to ensure modules are up-to-date. + go mod tidy + cd $(TOOLS_DIR); go mod tidy + +.PHONY: verify-modules +verify-modules: modules + @if !(git diff --quiet HEAD -- go.sum go.mod hack/tools/go.mod hack/tools/go.sum); then \ + echo "go module files are out of date"; exit 1; \ + fi + +generate: $(CONTROLLER_GEN) ## Generate code $(CONTROLLER_GEN) object:headerFile=./hack/boilerplate.go.txt paths="./..." + +.PHONY: verify-gen +verify-gen: generate manifests + @if !(git diff --quiet HEAD); then \ + echo "generated code and manifest files are out of date, run make generate manifests"; exit 1; \ + fi + .PHONY: docker-build docker-build: test # Build the controller image docker build . -t ${CONTROLLER_IMAGE} diff --git a/PROJECT b/PROJECT index 2b98c44..5b768b7 100644 --- a/PROJECT +++ b/PROJECT @@ -4,4 +4,7 @@ resources: - group: apps kind: ExecutionHook version: v1alpha1 +- group: apps + kind: HookAction + version: v1alpha1 version: "2" diff --git a/api/v1alpha1/hookaction_types.go b/api/v1alpha1/hookaction_types.go new file mode 100644 index 0000000..9a86025 --- /dev/null +++ b/api/v1alpha1/hookaction_types.go @@ -0,0 +1,66 @@ +/* +Copyright 2020 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package v1alpha1 + +import ( + corev1 "k8s.io/api/core/v1" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" +) + +// NOTE: json tags are required. Any new fields you add must have json tags for the fields to be serialized. + +// +kubebuilder:resource:path=hookaction,shortName=ha,scope=Namespaced,categories=hookaction +// +kubebuilder:object:root=true + +// HookAction is the Schema for the hookactions API +type HookAction struct { + metav1.TypeMeta `json:",inline"` + metav1.ObjectMeta `json:"metadata,omitempty"` + + // This contains the command to run in a container. + // The command should be idempotent because the system does not guarantee exactly-once semantics. + // Any action may be triggered more than once but only the latest results will be logged in status. + // As alpha feature, only ExecAction type in Handler will be support, not the HTTPGETAction or TCPSocketAction. + // This is required. + Action corev1.Handler `json:"action"` + + // ActionTimeoutSeconds defines when the execution hook controller should stop retrying. + // If execution fails, the execution hook controller will keep retrying until reaching + // ActionTimeoutSeconds. If execution still fails or hangs, execution hook controller + // stops retrying and updates executionhook status to failed. + // If controller loses its state, counter restarts. In this case, controller will retry + // for at least this long, before stopping. + // Once an action is started, controller has no way to stop it even if + // ActionTimeoutSeconds is exceeded. This simply controls if retry happens or not. + // retry is based on exponential backoff policy. If ActionTimeoutSeconds is not + // specified, it will retry until the hook object is deleted. + // +optional + ActionTimeoutSeconds int64 `json:"timeout"` +} + +// +kubebuilder:object:root=true + +// HookActionList contains a list of HookAction +type HookActionList struct { + metav1.TypeMeta `json:",inline"` + metav1.ListMeta `json:"metadata,omitempty"` + Items []HookAction `json:"items"` +} + +func init() { + SchemeBuilder.Register(&HookAction{}, &HookActionList{}) +} diff --git a/api/v1alpha1/zz_generated.deepcopy.go b/api/v1alpha1/zz_generated.deepcopy.go index 70c481f..7baace5 100644 --- a/api/v1alpha1/zz_generated.deepcopy.go +++ b/api/v1alpha1/zz_generated.deepcopy.go @@ -151,6 +151,64 @@ func (in *ExecutionHookStatus) DeepCopy() *ExecutionHookStatus { return out } +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *HookAction) DeepCopyInto(out *HookAction) { + *out = *in + out.TypeMeta = in.TypeMeta + in.ObjectMeta.DeepCopyInto(&out.ObjectMeta) + in.Action.DeepCopyInto(&out.Action) +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HookAction. +func (in *HookAction) DeepCopy() *HookAction { + if in == nil { + return nil + } + out := new(HookAction) + in.DeepCopyInto(out) + return out +} + +// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object. +func (in *HookAction) DeepCopyObject() runtime.Object { + if c := in.DeepCopy(); c != nil { + return c + } + return nil +} + +// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. +func (in *HookActionList) DeepCopyInto(out *HookActionList) { + *out = *in + out.TypeMeta = in.TypeMeta + in.ListMeta.DeepCopyInto(&out.ListMeta) + if in.Items != nil { + in, out := &in.Items, &out.Items + *out = make([]HookAction, len(*in)) + for i := range *in { + (*in)[i].DeepCopyInto(&(*out)[i]) + } + } +} + +// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new HookActionList. +func (in *HookActionList) DeepCopy() *HookActionList { + if in == nil { + return nil + } + out := new(HookActionList) + in.DeepCopyInto(out) + return out +} + +// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object. +func (in *HookActionList) DeepCopyObject() runtime.Object { + if c := in.DeepCopy(); c != nil { + return c + } + return nil +} + // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil. func (in *HookError) DeepCopyInto(out *HookError) { *out = *in diff --git a/config/crd/bases/apps.k8s.io_hookaction.yaml b/config/crd/bases/apps.k8s.io_hookaction.yaml new file mode 100644 index 0000000..6263470 --- /dev/null +++ b/config/crd/bases/apps.k8s.io_hookaction.yaml @@ -0,0 +1,149 @@ + +--- +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + annotations: + controller-gen.kubebuilder.io/version: v0.2.4 + creationTimestamp: null + name: hookaction.apps.k8s.io +spec: + group: apps.k8s.io + names: + categories: + - hookaction + kind: HookAction + listKind: HookActionList + plural: hookaction + shortNames: + - ha + singular: hookaction + scope: Namespaced + validation: + openAPIV3Schema: + description: HookAction is the Schema for the hookactions API + properties: + action: + description: This contains the command to run in a container. The command + should be idempotent because the system does not guarantee exactly-once + semantics. Any action may be triggered more than once but only the latest + results will be logged in status. As alpha feature, only ExecAction type + in Handler will be support, not the HTTPGETAction or TCPSocketAction. + This is required. + properties: + exec: + description: One and only one of the following should be specified. + Exec specifies the action to take. + properties: + command: + description: Command is the command line to execute inside the container, + the working directory for the command is root ('/') in the container's + filesystem. The command is simply exec'd, it is not run inside + a shell, so traditional shell instructions ('|', etc) won't work. + To use a shell, you need to explicitly call out to that shell. + Exit status of 0 is treated as live/healthy and non-zero is unhealthy. + items: + type: string + type: array + type: object + httpGet: + description: HTTPGet specifies the http request to perform. + properties: + host: + description: Host name to connect to, defaults to the pod IP. You + probably want to set "Host" in httpHeaders instead. + type: string + httpHeaders: + description: Custom headers to set in the request. HTTP allows repeated + headers. + items: + description: HTTPHeader describes a custom header to be used in + HTTP probes + properties: + name: + description: The header field name + type: string + value: + description: The header field value + type: string + required: + - name + - value + type: object + type: array + path: + description: Path to access on the HTTP server. + type: string + port: + anyOf: + - type: integer + - type: string + description: Name or number of the port to access on the container. + Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME. + x-kubernetes-int-or-string: true + scheme: + description: Scheme to use for connecting to the host. Defaults + to HTTP. + type: string + required: + - port + type: object + tcpSocket: + description: 'TCPSocket specifies an action involving a TCP port. TCP + hooks not yet supported TODO: implement a realistic TCP lifecycle + hook' + properties: + host: + description: 'Optional: Host name to connect to, defaults to the + pod IP.' + type: string + port: + anyOf: + - type: integer + - type: string + description: Number or name of the port to access on the container. + Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME. + x-kubernetes-int-or-string: true + required: + - port + type: object + type: object + apiVersion: + description: 'APIVersion defines the versioned schema of this representation + of an object. Servers should convert recognized schemas to the latest + internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources' + type: string + kind: + description: 'Kind is a string value representing the REST resource this + object represents. Servers may infer this from the endpoint the client + submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds' + type: string + metadata: + type: object + timeout: + description: ActionTimeoutSeconds defines when the execution hook controller + should stop retrying. If execution fails, the execution hook controller + will keep retrying until reaching ActionTimeoutSeconds. If execution still + fails or hangs, execution hook controller stops retrying and updates executionhook + status to failed. If controller loses its state, counter restarts. In + this case, controller will retry for at least this long, before stopping. + Once an action is started, controller has no way to stop it even if ActionTimeoutSeconds + is exceeded. This simply controls if retry happens or not. retry is based + on exponential backoff policy. If ActionTimeoutSeconds is not specified, + it will retry until the hook object is deleted. + format: int64 + type: integer + required: + - action + type: object + version: v1alpha1 + versions: + - name: v1alpha1 + served: true + storage: true +status: + acceptedNames: + kind: "" + plural: "" + conditions: [] + storedVersions: [] diff --git a/config/crd/kustomization.yaml b/config/crd/kustomization.yaml index 9907ead..6d0304d 100644 --- a/config/crd/kustomization.yaml +++ b/config/crd/kustomization.yaml @@ -3,17 +3,20 @@ # It should be run by config/default resources: - bases/apps.k8s.io_executionhook.yaml +- bases/apps.k8s.io_hookaction.yaml # +kubebuilder:scaffold:crdkustomizeresource patchesStrategicMerge: # [WEBHOOK] To enable webhook, uncomment all the sections with [WEBHOOK] prefix. # patches here are for enabling the conversion webhook for each CRD #- patches/webhook_in_executionhook.yaml +#- patches/webhook_in_hookactions.yaml # +kubebuilder:scaffold:crdkustomizewebhookpatch # [CERTMANAGER] To enable webhook, uncomment all the sections with [CERTMANAGER] prefix. # patches here are for enabling the CA injection for each CRD #- patches/cainjection_in_executionhook.yaml +#- patches/cainjection_in_hookactions.yaml # +kubebuilder:scaffold:crdkustomizecainjectionpatch # the following config is for teaching kustomize how to do kustomization for CRDs. diff --git a/config/crd/patches/cainjection_in_hookactions.yaml b/config/crd/patches/cainjection_in_hookactions.yaml new file mode 100644 index 0000000..bac64e1 --- /dev/null +++ b/config/crd/patches/cainjection_in_hookactions.yaml @@ -0,0 +1,8 @@ +# The following patch adds a directive for certmanager to inject CA into the CRD +# CRD conversion requires k8s 1.13 or later. +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + annotations: + cert-manager.io/inject-ca-from: $(CERTIFICATE_NAMESPACE)/$(CERTIFICATE_NAME) + name: hookactions.apps.k8s.io diff --git a/config/crd/patches/webhook_in_hookactions.yaml b/config/crd/patches/webhook_in_hookactions.yaml new file mode 100644 index 0000000..bb3e535 --- /dev/null +++ b/config/crd/patches/webhook_in_hookactions.yaml @@ -0,0 +1,17 @@ +# The following patch enables conversion webhook for CRD +# CRD conversion requires k8s 1.13 or later. +apiVersion: apiextensions.k8s.io/v1beta1 +kind: CustomResourceDefinition +metadata: + name: hookactions.apps.k8s.io +spec: + conversion: + strategy: Webhook + webhookClientConfig: + # this is "\n" used as a placeholder, otherwise it will be rejected by the apiserver for being blank, + # but we're going to set it later using the cert-manager (or potentially a patch if not using cert-manager) + caBundle: Cg== + service: + namespace: system + name: webhook-service + path: /convert diff --git a/config/rbac/hookaction_editor_role.yaml b/config/rbac/hookaction_editor_role.yaml new file mode 100644 index 0000000..58089e9 --- /dev/null +++ b/config/rbac/hookaction_editor_role.yaml @@ -0,0 +1,26 @@ +# permissions to do edit hookactions. +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + name: hookaction-editor-role +rules: +- apiGroups: + - apps.k8s.io + resources: + - hookactions + verbs: + - create + - delete + - get + - list + - patch + - update + - watch +- apiGroups: + - apps.k8s.io + resources: + - hookactions/status + verbs: + - get + - patch + - update diff --git a/config/rbac/hookaction_viewer_role.yaml b/config/rbac/hookaction_viewer_role.yaml new file mode 100644 index 0000000..9bf2fb7 --- /dev/null +++ b/config/rbac/hookaction_viewer_role.yaml @@ -0,0 +1,20 @@ +# permissions to do viewer hookactions. +apiVersion: rbac.authorization.k8s.io/v1 +kind: ClusterRole +metadata: + name: hookaction-viewer-role +rules: +- apiGroups: + - apps.k8s.io + resources: + - hookactions + verbs: + - get + - list + - watch +- apiGroups: + - apps.k8s.io + resources: + - hookactions/status + verbs: + - get diff --git a/config/rbac/role.yaml b/config/rbac/role.yaml index 4049099..d835516 100644 --- a/config/rbac/role.yaml +++ b/config/rbac/role.yaml @@ -26,3 +26,31 @@ rules: - get - patch - update +- apiGroups: + - apps.k8s.io + resources: + - hookaction + verbs: + - get + - list + - watch +- apiGroups: + - "" + resources: + - pods + verbs: + - get + - list + - watch +- apiGroups: + - "" + resources: + - pods/exec + verbs: + - create + - delete + - get + - list + - patch + - update + - watch diff --git a/config/samples/apps_v1alpha1_hookaction.yaml b/config/samples/apps_v1alpha1_hookaction.yaml new file mode 100644 index 0000000..689d9e5 --- /dev/null +++ b/config/samples/apps_v1alpha1_hookaction.yaml @@ -0,0 +1,9 @@ +apiVersion: apps.k8s.io/v1alpha1 +kind: HookAction +metadata: + name: hookaction-sample +action: + exec: + command: + - cat + - /etc/resolv.conf diff --git a/controllers/executionhook_controller.go b/controllers/executionhook_controller.go index 4ae7386..ccb5132 100644 --- a/controllers/executionhook_controller.go +++ b/controllers/executionhook_controller.go @@ -19,6 +19,8 @@ package controllers import ( "context" "fmt" + "strings" + "time" "github.com/go-logr/logr" "github.com/pkg/errors" @@ -26,10 +28,14 @@ import ( apierrs "k8s.io/apimachinery/pkg/api/errors" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/runtime" + "k8s.io/apimachinery/pkg/types" + "k8s.io/client-go/kubernetes" + "k8s.io/client-go/rest" "k8s.io/client-go/tools/record" ctrl "sigs.k8s.io/controller-runtime" "sigs.k8s.io/controller-runtime/pkg/client" "sigs.k8s.io/controller-runtime/pkg/controller" + "sigs.k8s.io/execution-hook/controllers/hookactionutil" "sigs.k8s.io/execution-hook/util" "sigs.k8s.io/execution-hook/util/patch" @@ -42,6 +48,7 @@ type ExecutionHookReconciler struct { Log logr.Logger Scheme *runtime.Scheme + restConfig *rest.Config controller controller.Controller recorder record.EventRecorder } @@ -65,12 +72,16 @@ func (r *ExecutionHookReconciler) SetupWithManager(mgr ctrl.Manager, options con r.controller = c r.recorder = mgr.GetEventRecorderFor("execution-hook-controller") + r.restConfig = mgr.GetConfig() return nil } +// +kubebuilder:rbac:groups=core,resources=pods,verbs=get;list;watch +// +kubebuilder:rbac:groups=core,resources=pods/exec,verbs=get;list;watch;create;update;patch;delete // +kubebuilder:rbac:groups=apps.k8s.io,resources=executionhook,verbs=get;list;watch;create;update;patch;delete // +kubebuilder:rbac:groups=apps.k8s.io,resources=executionhook/status,verbs=get;update;patch +// +kubebuilder:rbac:groups=apps.k8s.io,resources=hookaction,verbs=get;list;watch func (r *ExecutionHookReconciler) Reconcile(req ctrl.Request) (_ ctrl.Result, reterr error) { ctx := context.Background() @@ -118,7 +129,7 @@ func (r *ExecutionHookReconciler) reconcileHookDeletion(ctx context.Context, hoo } func (r *ExecutionHookReconciler) reconcile(ctx context.Context, hook *appsv1alpha1.ExecutionHook) (ctrl.Result, error) { - hookName := fmt.Sprintf("%s/%s", hook.Name, hook.Namespace) + hookName := fmt.Sprintf("%s/%s", hook.Namespace, hook.Name) actionName := fmt.Sprintf("%s/%s", hook.Namespace, hook.Spec.ActionName) log := r.Log.WithValues("executionhook", hookName, "action", actionName) @@ -128,13 +139,18 @@ func (r *ExecutionHookReconciler) reconcile(ctx context.Context, hook *appsv1alp } log.Info("Looking up hook-action") - //(TODO ashish-amarnath): lookup hook action associated with this hook + hookAction := &appsv1alpha1.HookAction{} + err := r.Client.Get(ctx, types.NamespacedName{ + Namespace: hook.Namespace, Name: hook.Spec.ActionName, + }, hookAction) + if err != nil { + return ctrl.Result{}, errors.Wrapf(err, "failed to get hookaction %s", actionName) + } log.Info("Selecting PodContainerNames to run hook-action") podContainerNamesList, err := r.selectPodContainers(hook.Namespace, &hook.Spec.PodSelection) if err != nil { - return ctrl.Result{}, errors.Wrapf(err, - "failed to select podContainerNames to run hook action %s while reconciling execution-hook %s", actionName, hookName) + return ctrl.Result{}, errors.Wrapf(err, "selecting podContainerNames failed for executionhook %s", hookName) } if len(podContainerNamesList) == 0 { log.Info("Nothing to do, PodSelection returned 0 PodContainerNames for execution hook", @@ -142,10 +158,28 @@ func (r *ExecutionHookReconciler) reconcile(ctx context.Context, hook *appsv1alp return ctrl.Result{}, nil } + kubeClient, err := kubernetes.NewForConfig(r.restConfig) + if err != nil { + return ctrl.Result{}, errors.Wrapf(err, "failed to instantiate kubernetes clientset to run hook action") + } + log.Info("Running HookAction", "targetContainerCount", len(podContainerNamesList)) + // TODO (ashish-amarnath) filter podContainerNames that already have a success status. + // If all podContainerNames have a success status, delete this ExecutionHook or mark for deletion + + var aggErrs []error for _, pc := range podContainerNamesList { - r.runHookAction(pc, hook, hook.Spec.ActionName) + err := r.runHookAction(pc, hook, hookAction, kubeClient) + if err != nil { + aggErrs = append(aggErrs, err) + log.Error(err, "failed to run executionhook", "pod", pc.PodName, "containers", fmt.Sprintf("[%s]", strings.Join(pc.ContainerNames, ";"))) + } + } + + if len(aggErrs) > 0 { + return ctrl.Result{RequeueAfter: 30 * time.Second}, + errors.Errorf("one or more failures detected running executionhook %s. Retrying after 30s", hookName) } return ctrl.Result{}, nil } @@ -200,15 +234,20 @@ func (r *ExecutionHookReconciler) selectPodContainers(ns string, ps *appsv1alpha return res, nil } -func (r *ExecutionHookReconciler) runHookAction(pc appsv1alpha1.PodContainerNames, hook *appsv1alpha1.ExecutionHook, hookAction string) { +func (r *ExecutionHookReconciler) runHookAction(pc appsv1alpha1.PodContainerNames, hook *appsv1alpha1.ExecutionHook, + hookAction *appsv1alpha1.HookAction, kubeClient kubernetes.Interface) error { hookName := fmt.Sprintf("%s/%s", hook.Name, hook.Namespace) actionName := fmt.Sprintf("%s/%s", hook.Namespace, hook.Spec.ActionName) log := r.Log.WithValues("executionhook", hookName, "action", actionName) + if kubeClient == nil { + return errors.Errorf("unable to run executionhook %s, hook action %s with a nil kubernetes clientset", hookName, actionName) + } + hookStatuses := []appsv1alpha1.ContainerExecutionHookStatus{} for _, c := range pc.ContainerNames { log.Info("Running hookaction on", "pod", pc.PodName, "container", c) - // TODO (ashish-amarnath): run hook action using exec API + hookactionutil.ExecuteActionCommand(hookAction.Action.Exec, hook.Namespace, pc.PodName, c, hookName, actionName, kubeClient, r.Log) result := false st := metav1.Now() cs := appsv1alpha1.ContainerExecutionHookStatus{ @@ -222,4 +261,5 @@ func (r *ExecutionHookReconciler) runHookAction(pc appsv1alpha1.PodContainerName hookStatuses = append(hookStatuses, cs) } hook.Status.HookStatuses = hookStatuses + return nil } diff --git a/controllers/hookactionutil/util.go b/controllers/hookactionutil/util.go new file mode 100644 index 0000000..120eb1c --- /dev/null +++ b/controllers/hookactionutil/util.go @@ -0,0 +1,50 @@ +/* +Copyright 2020 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package hookactionutil + +import ( + "fmt" + "github.com/go-logr/logr" + "github.com/pkg/errors" + corev1 "k8s.io/api/core/v1" + "k8s.io/client-go/kubernetes" + "strings" +) + +// ExecuteActionCommand executes ExecAction in the supplied ns/pod/container +func ExecuteActionCommand(ea *corev1.ExecAction, ns, pod, container, hookName, actionName string, kubeClient kubernetes.Interface, log logr.Logger) error { + if ea == nil || len(ea.Command) == 0 { + return errors.Errorf("for hook-action %s, ExecAction.Command is required", actionName) + } + podapi := new(corev1.Pod) + if !containerExists(ns, pod, container, podapi) { + return errors.Errorf("in namespace %s, container %s/%s does not exist", ns, pod, container) + } + log.WithValues( + "executionhook", hookName, + "hook-action", actionName, + "namespace", ns, + "pod", pod, + "container", container) + log.Info("Running ExecAction", "command", fmt.Sprintf("[%s", strings.Join(ea.Command, " "))) + return nil +} + +func containerExists(ns, podName, container string, podAPI *corev1.Pod) bool { + // TODO (ashish-amarnath) Implement this + return true +} From 20a04eccd9a3e2efefa7c5f0c8ab5ffb72610bd5 Mon Sep 17 00:00:00 2001 From: Ashish Amarnath Date: Wed, 8 Jan 2020 11:43:12 -0800 Subject: [PATCH 5/7] implement exechookaction runner Signed-off-by: Ashish Amarnath --- controllers/executionhook_controller.go | 40 ++++--- controllers/executionhook_controller_test.go | 81 +++++++++++++- controllers/hookactionutil/util.go | 50 --------- util/hookactionrunner/exechookaction.go | 105 +++++++++++++++++++ util/hookactionrunner/hookactionrunner.go | 22 ++++ 5 files changed, 231 insertions(+), 67 deletions(-) delete mode 100644 controllers/hookactionutil/util.go create mode 100644 util/hookactionrunner/exechookaction.go create mode 100644 util/hookactionrunner/hookactionrunner.go diff --git a/controllers/executionhook_controller.go b/controllers/executionhook_controller.go index ccb5132..0b37580 100644 --- a/controllers/executionhook_controller.go +++ b/controllers/executionhook_controller.go @@ -29,14 +29,13 @@ import ( metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/runtime" "k8s.io/apimachinery/pkg/types" - "k8s.io/client-go/kubernetes" "k8s.io/client-go/rest" "k8s.io/client-go/tools/record" ctrl "sigs.k8s.io/controller-runtime" "sigs.k8s.io/controller-runtime/pkg/client" "sigs.k8s.io/controller-runtime/pkg/controller" - "sigs.k8s.io/execution-hook/controllers/hookactionutil" "sigs.k8s.io/execution-hook/util" + "sigs.k8s.io/execution-hook/util/hookactionrunner" "sigs.k8s.io/execution-hook/util/patch" appsv1alpha1 "sigs.k8s.io/execution-hook/api/v1alpha1" @@ -158,11 +157,6 @@ func (r *ExecutionHookReconciler) reconcile(ctx context.Context, hook *appsv1alp return ctrl.Result{}, nil } - kubeClient, err := kubernetes.NewForConfig(r.restConfig) - if err != nil { - return ctrl.Result{}, errors.Wrapf(err, "failed to instantiate kubernetes clientset to run hook action") - } - log.Info("Running HookAction", "targetContainerCount", len(podContainerNamesList)) // TODO (ashish-amarnath) filter podContainerNames that already have a success status. @@ -170,7 +164,7 @@ func (r *ExecutionHookReconciler) reconcile(ctx context.Context, hook *appsv1alp var aggErrs []error for _, pc := range podContainerNamesList { - err := r.runHookAction(pc, hook, hookAction, kubeClient) + err := r.runHookAction(pc, hook, hookAction) if err != nil { aggErrs = append(aggErrs, err) log.Error(err, "failed to run executionhook", "pod", pc.PodName, "containers", fmt.Sprintf("[%s]", strings.Join(pc.ContainerNames, ";"))) @@ -201,7 +195,7 @@ func (r *ExecutionHookReconciler) selectPodContainers(ns string, ps *appsv1alpha if err != nil { return nil, errors.Wrapf(err, "failed to convert labelSelector to type slector") } - r.Log.Info("Querying pods matching", "namespace", ns, "label-selector", labelSelector.String()) + r.Log.Info("Selecting matching pods", "namespace", ns, "label-selector", labelSelector.String()) listOpts := &client.ListOptions{ LabelSelector: labelSelector, } @@ -217,8 +211,14 @@ func (r *ExecutionHookReconciler) selectPodContainers(ns string, ps *appsv1alpha for _, p := range podList.Items { containers := []string{} - for _, c := range p.Spec.Containers { - containers = append(containers, c.Name) + if len(ps.PodContainerSelector.ContainerList) > 0 { + for _, c := range ps.PodContainerSelector.ContainerList { + containers = append(containers, c) + } + } else { + for _, c := range p.Spec.Containers { + containers = append(containers, c.Name) + } } pcn := appsv1alpha1.PodContainerNames{ PodName: p.Name, @@ -235,19 +235,29 @@ func (r *ExecutionHookReconciler) selectPodContainers(ns string, ps *appsv1alpha } func (r *ExecutionHookReconciler) runHookAction(pc appsv1alpha1.PodContainerNames, hook *appsv1alpha1.ExecutionHook, - hookAction *appsv1alpha1.HookAction, kubeClient kubernetes.Interface) error { + hookAction *appsv1alpha1.HookAction) error { hookName := fmt.Sprintf("%s/%s", hook.Name, hook.Namespace) actionName := fmt.Sprintf("%s/%s", hook.Namespace, hook.Spec.ActionName) log := r.Log.WithValues("executionhook", hookName, "action", actionName) - if kubeClient == nil { - return errors.Errorf("unable to run executionhook %s, hook action %s with a nil kubernetes clientset", hookName, actionName) + // Currently support for ExecAction is available + hookRunner := hookactionrunner.ExecActionRunner{ + Namespace: hook.Namespace, + HookName: hookName, + ActionName: actionName, + Action: hookAction.Action.Exec, + RestConfig: r.restConfig, + Log: r.Log, } hookStatuses := []appsv1alpha1.ContainerExecutionHookStatus{} for _, c := range pc.ContainerNames { log.Info("Running hookaction on", "pod", pc.PodName, "container", c) - hookactionutil.ExecuteActionCommand(hookAction.Action.Exec, hook.Namespace, pc.PodName, c, hookName, actionName, kubeClient, r.Log) + hookRunner.Pod = pc.PodName + hookRunner.Container = c + // TODO (ashish-amarnath): use the error returned to populate executionhook status + _ = hookRunner.Run() + result := false st := metav1.Now() cs := appsv1alpha1.ContainerExecutionHookStatus{ diff --git a/controllers/executionhook_controller_test.go b/controllers/executionhook_controller_test.go index adfafbd..c8c8d0d 100644 --- a/controllers/executionhook_controller_test.go +++ b/controllers/executionhook_controller_test.go @@ -147,7 +147,7 @@ var _ = Describe("selectPodContainers", func() { Expect(actual).To(BeEmpty()) }) - It("should return pod with multiple containers matching labelSelector with MatchLables only", func() { + It("should return pod matching labelSelector with MatchLables only with all containers", func() { // setup test pods objs := getTestPods() @@ -184,7 +184,7 @@ var _ = Describe("selectPodContainers", func() { Expect(podContainers).To(BeEquivalentTo(expected)) }) - It("Should return pod with multiple containers matching labelSelector with MatchLables and MatchExpressions", func() { + It("Should return pod matching labelSelector with MatchLables and MatchExpressions with all containers", func() { objs := getTestPods() r := &ExecutionHookReconciler{ Client: fake.NewFakeClient(objs...), @@ -220,6 +220,83 @@ var _ = Describe("selectPodContainers", func() { Expect(podContainers).To(BeEquivalentTo(expected)) }) + It("should return pod matching labelSelector with MatchLables only with specific containers", func() { + // setup test pods + objs := getTestPods() + + r := &ExecutionHookReconciler{ + Client: fake.NewFakeClient(objs...), + Log: log.Log, + } + + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: nil, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: &metav1.LabelSelector{ + MatchLabels: map[string]string{ + "app": "app1", + "owner": "admin", + }, + }, + ContainerList: []string{"my-awesome-app"}, + }, + } + + podContainers, err := r.selectPodContainers("test-ns", &podSelector) + expected := []appsv1alpha1.PodContainerNames{ + { + PodName: "app1-1", + ContainerNames: []string{"my-awesome-app"}, + }, + { + PodName: "app1-2", + ContainerNames: []string{"my-awesome-app"}, + }, + } + + Expect(err).To(BeNil()) + Expect(podContainers).To(BeEquivalentTo(expected)) + }) + + It("Should return pod matching labelSelector with MatchLables and MatchExpressions with specific containers", func() { + objs := getTestPods() + r := &ExecutionHookReconciler{ + Client: fake.NewFakeClient(objs...), + Log: log.Log, + } + + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: nil, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: &metav1.LabelSelector{ + MatchLabels: map[string]string{ + "app": "app1", + "owner": "admin", + }, + MatchExpressions: []metav1.LabelSelectorRequirement{ + { + Key: "environment", + Operator: metav1.LabelSelectorOpNotIn, + Values: []string{"test", "staging"}, + }, + }, + }, + ContainerList: []string{"my-awesome-app"}, + }, + } + + podContainers, err := r.selectPodContainers("test-ns", &podSelector) + expected := []appsv1alpha1.PodContainerNames{ + { + PodName: "app1-1", + ContainerNames: []string{"my-awesome-app"}, + }, + } + + Expect(err).To(BeNil()) + Expect(podContainers).To(BeEquivalentTo(expected)) + }) + It("should return podContainerNamesList when supplied", func() { objs := getTestPods() r := &ExecutionHookReconciler{ diff --git a/controllers/hookactionutil/util.go b/controllers/hookactionutil/util.go deleted file mode 100644 index 120eb1c..0000000 --- a/controllers/hookactionutil/util.go +++ /dev/null @@ -1,50 +0,0 @@ -/* -Copyright 2020 The Kubernetes Authors. - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. -*/ - -package hookactionutil - -import ( - "fmt" - "github.com/go-logr/logr" - "github.com/pkg/errors" - corev1 "k8s.io/api/core/v1" - "k8s.io/client-go/kubernetes" - "strings" -) - -// ExecuteActionCommand executes ExecAction in the supplied ns/pod/container -func ExecuteActionCommand(ea *corev1.ExecAction, ns, pod, container, hookName, actionName string, kubeClient kubernetes.Interface, log logr.Logger) error { - if ea == nil || len(ea.Command) == 0 { - return errors.Errorf("for hook-action %s, ExecAction.Command is required", actionName) - } - podapi := new(corev1.Pod) - if !containerExists(ns, pod, container, podapi) { - return errors.Errorf("in namespace %s, container %s/%s does not exist", ns, pod, container) - } - log.WithValues( - "executionhook", hookName, - "hook-action", actionName, - "namespace", ns, - "pod", pod, - "container", container) - log.Info("Running ExecAction", "command", fmt.Sprintf("[%s", strings.Join(ea.Command, " "))) - return nil -} - -func containerExists(ns, podName, container string, podAPI *corev1.Pod) bool { - // TODO (ashish-amarnath) Implement this - return true -} diff --git a/util/hookactionrunner/exechookaction.go b/util/hookactionrunner/exechookaction.go new file mode 100644 index 0000000..0023cc3 --- /dev/null +++ b/util/hookactionrunner/exechookaction.go @@ -0,0 +1,105 @@ +/* +Copyright 2020 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package hookactionrunner + +import ( + "bytes" + "fmt" + "strings" + + "github.com/go-logr/logr" + "github.com/pkg/errors" + corev1 "k8s.io/api/core/v1" + "k8s.io/client-go/kubernetes" + kscheme "k8s.io/client-go/kubernetes/scheme" + "k8s.io/client-go/rest" + "k8s.io/client-go/tools/remotecommand" +) + +// ExecActionRunner implements the HookActionRunner interface to run exec hook actions +type ExecActionRunner struct { + // TODO (ashish-amarnath) exec Action params + Action *corev1.ExecAction + Namespace string + Pod string + Container string + HookName string + ActionName string + Log logr.Logger + RestConfig *rest.Config +} + +// Run executes the ExecHookAction +func (e *ExecActionRunner) Run() error { + if e.Action == nil || len(e.Action.Command) == 0 { + return errors.Errorf("for hook-action %s, ExecAction.Command is required", e.ActionName) + } + podapi := new(corev1.Pod) + if !containerExists(e.Namespace, e.Pod, e.Container, podapi) { + return errors.Errorf("in namespace %s, container %s/%s does not exist", e.Namespace, e.Pod, e.Container) + } + e.Log.WithValues( + "executionhook", e.HookName, + "hook-action", e.ActionName, + "namespace", e.Namespace, + "pod", e.Pod, + "container", e.Container) + e.Log.Info("Running ExecAction", "command", fmt.Sprintf("[%s]", strings.Join(e.Action.Command, " "))) + + kubeClient, err := kubernetes.NewForConfig(e.RestConfig) + if err != nil { + return errors.Wrapf(err, "failed to instantiate kubernetes clientset to run hook action") + } + + req := kubeClient.CoreV1().RESTClient(). + Post(). + Resource("pods"). + Namespace(e.Namespace). + Name(e.Pod). + SubResource("exec") + + req.VersionedParams(&corev1.PodExecOptions{ + Container: e.Container, + Command: e.Action.Command, + Stdout: true, + Stderr: true, + }, kscheme.ParameterCodec) + + e.Log.Info("Setting up for remote hook action") + executor, err := remotecommand.NewSPDYExecutor(e.RestConfig, "POST", req.URL()) + if err != nil { + return errors.Wrapf(err, "failed to setup for hook execution in container") + } + var stdout, stderr bytes.Buffer + + streamOptions := remotecommand.StreamOptions{ + Stdout: &stdout, + Stderr: &stderr, + } + // TODO (ashish-amarnath) implement timeout scenario + e.Log.Info("Executing remote command and waiting it for it to complete") + err = executor.Stream(streamOptions) + + e.Log.Info(fmt.Sprintf("stdout: %s", stdout.String())) + e.Log.Info(fmt.Sprintf("stderr: %s", stderr.String())) + return err +} + +func containerExists(ns, podName, container string, podAPI *corev1.Pod) bool { + // TODO (ashish-amarnath) Implement this + return true +} diff --git a/util/hookactionrunner/hookactionrunner.go b/util/hookactionrunner/hookactionrunner.go new file mode 100644 index 0000000..a1bb74b --- /dev/null +++ b/util/hookactionrunner/hookactionrunner.go @@ -0,0 +1,22 @@ +/* +Copyright 2020 The Kubernetes Authors. + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package hookactionrunner + +// HookActionRunner abstracts the execution of the hook action +type HookActionRunner interface { + Run() error +} From f05b3abed3e1a498f2c7b8b1769f45c1561302c6 Mon Sep 17 00:00:00 2001 From: Ashish Amarnath Date: Thu, 9 Jan 2020 10:40:05 -0800 Subject: [PATCH 6/7] don't rerun hook-action on succeeded podContainers Signed-off-by: Ashish Amarnath --- controllers/executionhook_controller.go | 48 +++- controllers/executionhook_controller_test.go | 226 +++++++++++++++++++ 2 files changed, 268 insertions(+), 6 deletions(-) diff --git a/controllers/executionhook_controller.go b/controllers/executionhook_controller.go index 0b37580..969f89a 100644 --- a/controllers/executionhook_controller.go +++ b/controllers/executionhook_controller.go @@ -143,7 +143,7 @@ func (r *ExecutionHookReconciler) reconcile(ctx context.Context, hook *appsv1alp Namespace: hook.Namespace, Name: hook.Spec.ActionName, }, hookAction) if err != nil { - return ctrl.Result{}, errors.Wrapf(err, "failed to get hookaction %s", actionName) + return ctrl.Result{}, errors.Wrapf(err, "failed to get hook-action %s", actionName) } log.Info("Selecting PodContainerNames to run hook-action") @@ -157,13 +157,17 @@ func (r *ExecutionHookReconciler) reconcile(ctx context.Context, hook *appsv1alp return ctrl.Result{}, nil } - log.Info("Running HookAction", "targetContainerCount", len(podContainerNamesList)) + log.Info("Selected PodContainerNames for hook-action execution", "slectedCount", len(podContainerNamesList)) - // TODO (ashish-amarnath) filter podContainerNames that already have a success status. - // If all podContainerNames have a success status, delete this ExecutionHook or mark for deletion + filtered := r.filterSucceeded(hook, podContainerNamesList) + if len(filtered) == 0 { + log.Info("Nothing to do, HookAction has been successful on all podContainerNames.") + return ctrl.Result{}, nil + } + log.Info("Filtered successful podContainerNames from selected pods", "filteredPodContainerCount", len(filtered)) var aggErrs []error - for _, pc := range podContainerNamesList { + for _, pc := range filtered { err := r.runHookAction(pc, hook, hookAction) if err != nil { aggErrs = append(aggErrs, err) @@ -234,6 +238,38 @@ func (r *ExecutionHookReconciler) selectPodContainers(ns string, ps *appsv1alpha return res, nil } +func (r *ExecutionHookReconciler) getSucceededPodContainers(hook *appsv1alpha1.ExecutionHook) []string { + pcStatusMap := []string{} + if hook == nil || hook.Status.HookStatuses == nil || len(hook.Status.HookStatuses) == 0 { + return pcStatusMap + } + + for _, pcs := range hook.Status.HookStatuses { + if *pcs.Succeed { + pcStatusMap = append(pcStatusMap, fmt.Sprintf("%s/%s", pcs.PodName, pcs.ContainerName)) + } + } + return pcStatusMap +} + +func (r *ExecutionHookReconciler) filterSucceeded(hook *appsv1alpha1.ExecutionHook, pcs []appsv1alpha1.PodContainerNames) []appsv1alpha1.PodContainerNames { + filtered := []appsv1alpha1.PodContainerNames{} + succeededPodContainerNames := r.getSucceededPodContainers(hook) + for _, pcn := range pcs { + containers := pcn.ContainerNames + for _, c := range pcn.ContainerNames { + if util.Contains(succeededPodContainerNames, fmt.Sprintf("%s/%s", pcn.PodName, c)) { + containers = util.Filter(containers, c) + } + } + if len(containers) > 0 { + pcn.ContainerNames = containers + filtered = append(filtered, pcn) + } + } + return filtered +} + func (r *ExecutionHookReconciler) runHookAction(pc appsv1alpha1.PodContainerNames, hook *appsv1alpha1.ExecutionHook, hookAction *appsv1alpha1.HookAction) error { hookName := fmt.Sprintf("%s/%s", hook.Name, hook.Namespace) @@ -252,7 +288,7 @@ func (r *ExecutionHookReconciler) runHookAction(pc appsv1alpha1.PodContainerName hookStatuses := []appsv1alpha1.ContainerExecutionHookStatus{} for _, c := range pc.ContainerNames { - log.Info("Running hookaction on", "pod", pc.PodName, "container", c) + log.Info("Running hook-action on", "pod", pc.PodName, "container", c) hookRunner.Pod = pc.PodName hookRunner.Container = c // TODO (ashish-amarnath): use the error returned to populate executionhook status diff --git a/controllers/executionhook_controller_test.go b/controllers/executionhook_controller_test.go index c8c8d0d..1d46716 100644 --- a/controllers/executionhook_controller_test.go +++ b/controllers/executionhook_controller_test.go @@ -341,3 +341,229 @@ var _ = Describe("selectPodContainers", func() { }) }) }) + +var _ = Describe("getSucceededPodContainers", func() { + BeforeEach(func() {}) + AfterEach(func() {}) + r := &ExecutionHookReconciler{ + Client: k8sClient, + Log: log.Log, + } + + t := true + f := false + + Context("From ExecutionHook.Status, get podContainerNames on which hookaction has completed successfully", func() { + It("should return empty result when hook is nil", func() { + actual := r.getSucceededPodContainers(nil) + + Expect(actual).To(BeEmpty()) + }) + + It("should return empty result when ExecutionHook.Status.HookStatuses is nil", func() { + actual := r.getSucceededPodContainers(&appsv1alpha1.ExecutionHook{ + Status: appsv1alpha1.ExecutionHookStatus{ + HookStatuses: nil, + }, + }) + Expect(actual).To(BeEmpty()) + }) + }) + + It("should return empty result when ExecutionHook.Status.HookStatuses is empty", func() { + actual := r.getSucceededPodContainers(&appsv1alpha1.ExecutionHook{ + Status: appsv1alpha1.ExecutionHookStatus{ + HookStatuses: []appsv1alpha1.ContainerExecutionHookStatus{}, + }, + }) + Expect(actual).To(BeEmpty()) + }) + + It("should return only those podContainerNames that have run the hook-action successfully", func() { + testExecutionHook := appsv1alpha1.ExecutionHook{ + Status: appsv1alpha1.ExecutionHookStatus{ + HookStatuses: []appsv1alpha1.ContainerExecutionHookStatus{ + { + PodName: "super-useful-app", + ContainerName: "app", + Succeed: &t, + }, + { + PodName: "super-useful-app", + ContainerName: "auth-proxy", + Succeed: &f, + }, + { + PodName: "super-useful-app", + ContainerName: "metric-proxy", + Succeed: &f, + }, + { + PodName: "somewhat-useful-app", + ContainerName: "app", + Succeed: &t, + }, + { + PodName: "somewhat-useful-app", + ContainerName: "auth-proxy", + Succeed: &f, + }, + { + PodName: "somewhat-useful-app", + ContainerName: "metric-proxy", + Succeed: &f, + }, + }, + }, + } + expected := []string{"super-useful-app/app", "somewhat-useful-app/app"} + actual := r.getSucceededPodContainers(&testExecutionHook) + Expect(actual).To(BeEquivalentTo(expected)) + }) +}) + +var _ = Describe("filterSucceeded", func() { + BeforeEach(func() {}) + AfterEach(func() {}) + r := &ExecutionHookReconciler{ + Client: k8sClient, + Log: log.Log, + } + + t := true + f := false + + testExecutionHook := appsv1alpha1.ExecutionHook{ + Status: appsv1alpha1.ExecutionHookStatus{ + HookStatuses: []appsv1alpha1.ContainerExecutionHookStatus{ + { + PodName: "super-useful-app", + ContainerName: "app", + Succeed: &t, + }, + { + PodName: "super-useful-app", + ContainerName: "auth-proxy", + Succeed: &f, + }, + { + PodName: "super-useful-app", + ContainerName: "metric-proxy", + Succeed: &f, + }, + { + PodName: "somewhat-useful-app", + ContainerName: "app", + Succeed: &t, + }, + { + PodName: "somewhat-useful-app", + ContainerName: "auth-proxy", + Succeed: &f, + }, + { + PodName: "somewhat-useful-app", + ContainerName: "metric-proxy", + Succeed: &f, + }, + }, + }, + } + + Context("Filter succeededPodContainerNames", func() { + It("should return empty result when selectedPodContainerNames is empty", func() { + actual := r.filterSucceeded(&testExecutionHook, []appsv1alpha1.PodContainerNames{}) + Expect(actual).To(BeEmpty()) + }) + + It("should return correct result when all podContainerNames have a success status", func() { + allSuccessExecutionHook := appsv1alpha1.ExecutionHook{ + Status: appsv1alpha1.ExecutionHookStatus{ + HookStatuses: []appsv1alpha1.ContainerExecutionHookStatus{ + { + PodName: "super-useful-app", + ContainerName: "app", + Succeed: &t, + }, + { + PodName: "somewhat-useful-app", + ContainerName: "app", + Succeed: &t, + }, + }, + }, + } + selectedPodContainerNames := []appsv1alpha1.PodContainerNames{ + { + PodName: "super-useful-app", + ContainerNames: []string{"app"}, + }, + { + PodName: "somewhat-useful-app", + ContainerNames: []string{"app"}, + }, + } + actual := r.filterSucceeded(&allSuccessExecutionHook, selectedPodContainerNames) + Expect(actual).To(BeEmpty()) + }) + + It("should return correct result when all podContainerNames have a failed status", func() { + + allFailsExecutionHook := appsv1alpha1.ExecutionHook{ + Status: appsv1alpha1.ExecutionHookStatus{ + HookStatuses: []appsv1alpha1.ContainerExecutionHookStatus{ + { + PodName: "super-useful-app", + ContainerName: "app", + Succeed: &f, + }, + { + PodName: "somewhat-useful-app", + ContainerName: "app", + Succeed: &f, + }, + }, + }, + } + selectedPodContainerNames := []appsv1alpha1.PodContainerNames{ + { + PodName: "super-useful-app", + ContainerNames: []string{"app"}, + }, + { + PodName: "somewhat-useful-app", + ContainerNames: []string{"app"}, + }, + } + + actual := r.filterSucceeded(&allFailsExecutionHook, selectedPodContainerNames) + Expect(actual).To(BeEquivalentTo(selectedPodContainerNames)) + }) + + It("should return only those podContainerNames that have a failed status", func() { + selectedPodContainerNames := []appsv1alpha1.PodContainerNames{ + { + PodName: "super-useful-app", + ContainerNames: []string{"app", "auth-proxy", "metric-proxy"}, + }, + { + PodName: "somewhat-useful-app", + ContainerNames: []string{"app", "auth-proxy", "metric-proxy"}, + }, + } + + expected := []appsv1alpha1.PodContainerNames{ + { + PodName: "super-useful-app", + ContainerNames: []string{"auth-proxy", "metric-proxy"}, + }, + { + PodName: "somewhat-useful-app", + ContainerNames: []string{"auth-proxy", "metric-proxy"}, + }, + } + actual := r.filterSucceeded(&testExecutionHook, selectedPodContainerNames) + Expect(actual).To(BeEquivalentTo(expected)) + }) + }) +}) From 84f28dab35ed1072e37a8613a7c1325d484bcf58 Mon Sep 17 00:00:00 2001 From: Ashish Amarnath Date: Sat, 11 Jan 2020 00:18:20 -0800 Subject: [PATCH 7/7] add more unit tests Signed-off-by: Ashish Amarnath --- Makefile | 2 +- controllers/executionhook_controller.go | 18 +- controllers/executionhook_controller_test.go | 710 ++++++++++++------- controllers/suite_test.go | 15 +- 4 files changed, 466 insertions(+), 279 deletions(-) diff --git a/Makefile b/Makefile index 6e756a1..cf5bd49 100644 --- a/Makefile +++ b/Makefile @@ -50,7 +50,7 @@ all: manager .PHONY: test test: generate fmt vet manifests ## Run tests - go test ./... -coverprofile cover.out + go test -v ./... -coverprofile cover.out .PHONY: manager manager: generate fmt vet test ## Build manager binary diff --git a/controllers/executionhook_controller.go b/controllers/executionhook_controller.go index 969f89a..5af1ae3 100644 --- a/controllers/executionhook_controller.go +++ b/controllers/executionhook_controller.go @@ -182,6 +182,14 @@ func (r *ExecutionHookReconciler) reconcile(ctx context.Context, hook *appsv1alp return ctrl.Result{}, nil } +func getPodContainerNames(p corev1.Pod) []string { + containers := []string{} + for _, c := range p.Spec.Containers { + containers = append(containers, c.Name) + } + return containers +} + func (r *ExecutionHookReconciler) selectPodContainers(ns string, ps *appsv1alpha1.PodSelection) ([]appsv1alpha1.PodContainerNames, error) { if ps == nil { return nil, errors.Errorf("Cannot use nil podSelection to select podContainers") @@ -215,15 +223,23 @@ func (r *ExecutionHookReconciler) selectPodContainers(ns string, ps *appsv1alpha for _, p := range podList.Items { containers := []string{} + podContainers := getPodContainerNames(p) if len(ps.PodContainerSelector.ContainerList) > 0 { for _, c := range ps.PodContainerSelector.ContainerList { - containers = append(containers, c) + if util.Contains(podContainers, c) { + containers = append(containers, c) + } else { + r.Log.Info("pod does not have container", "pod", p.Name, "container", c) + } } } else { for _, c := range p.Spec.Containers { containers = append(containers, c.Name) } } + if len(containers) == 0 { + continue + } pcn := appsv1alpha1.PodContainerNames{ PodName: p.Name, ContainerNames: containers, diff --git a/controllers/executionhook_controller_test.go b/controllers/executionhook_controller_test.go index 1d46716..9f3ce13 100644 --- a/controllers/executionhook_controller_test.go +++ b/controllers/executionhook_controller_test.go @@ -22,6 +22,9 @@ import ( corev1 "k8s.io/api/core/v1" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/runtime" + "k8s.io/apimachinery/pkg/types" + ctrl "sigs.k8s.io/controller-runtime" + "sigs.k8s.io/controller-runtime/pkg/client" "sigs.k8s.io/controller-runtime/pkg/client/fake" "sigs.k8s.io/controller-runtime/pkg/log" @@ -114,231 +117,330 @@ func getTestPods() []runtime.Object { Phase: corev1.PodPending, }, }, + &corev1.Pod{ + ObjectMeta: metav1.ObjectMeta{ + Name: "app1-3", + Namespace: "test-ns", + Labels: map[string]string{ + "app": "app1", + "owner": "admin", + "environment": "test", + }, + }, + Spec: corev1.PodSpec{ + Containers: []corev1.Container{}, + }, + Status: corev1.PodStatus{ + Phase: corev1.PodPending, + }, + }, } } -var _ = Describe("selectPodContainers", func() { +var _ = Describe("ExecutionHook Reconciler", func() { BeforeEach(func() {}) AfterEach(func() {}) - Context("Select PodContainer to run execution hook action", func() { - It("should returns nil result and error when PodSelection is nil", func() { - r := &ExecutionHookReconciler{ - Client: k8sClient, - Log: log.Log, - } - actual, err := r.selectPodContainers("test-ns", nil) - Expect(err).NotTo(BeNil()) - Expect(actual).To(BeNil()) + It("should return ignore ExecutionHook not found error and return empty result and nil error", func() { + r := &ExecutionHookReconciler{ + Client: k8sClient, + Log: log.Log, + } + actualResult, err := r.Reconcile(ctrl.Request{ + NamespacedName: types.NamespacedName{Namespace: "DoesNotExist", Name: "DoesNotExist"}, }) - It("should returns empty result and nil error when label selector in the PodSelection.PodSelector is nil", func() { - r := &ExecutionHookReconciler{ - Client: k8sClient, - Log: log.Log, - } - podSelector := appsv1alpha1.PodSelection{ - PodContainerNamesList: nil, - PodContainerSelector: &appsv1alpha1.PodContainerSelector{ - PodSelector: nil, - }, - } - actual, err := r.selectPodContainers("test-ns", &podSelector) - Expect(err).To(BeNil()) - Expect(actual).To(BeEmpty()) + Expect(actualResult).To(BeEquivalentTo(ctrl.Result{})) + Expect(err).To(BeNil()) + }) + It("should return error on failing to fetch HookAction", func() { + r := &ExecutionHookReconciler{ + Client: k8sClient, + Log: log.Log, + } + th := appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Namespace: "default", + Name: "test-execution-hook", + }, + Spec: appsv1alpha1.ExecutionHookSpec{ + ActionName: "doesNotExist", + }, + } + Expect(k8sClient.Create(ctx, &th)).To(BeNil()) + defer func() { + Expect(k8sClient.Delete(ctx, &th)).NotTo(HaveOccurred()) + }() + actualResult, err := r.Reconcile(ctrl.Request{ + NamespacedName: types.NamespacedName{Namespace: "default", Name: "test-execution-hook"}, }) - It("should return pod matching labelSelector with MatchLables only with all containers", func() { - // setup test pods - objs := getTestPods() - - r := &ExecutionHookReconciler{ - Client: fake.NewFakeClient(objs...), - Log: log.Log, - } + Expect(actualResult).To(BeEquivalentTo(ctrl.Result{})) + Expect(err).To(HaveOccurred()) + }) - podSelector := appsv1alpha1.PodSelection{ - PodContainerNamesList: nil, - PodContainerSelector: &appsv1alpha1.PodContainerSelector{ - PodSelector: &metav1.LabelSelector{ - MatchLabels: map[string]string{ - "app": "app1", - "owner": "admin", - }, + It("should populate finalizers on reconciliation", func() { + objs := []runtime.Object{ + &appsv1alpha1.ExecutionHook{ + ObjectMeta: metav1.ObjectMeta{ + Namespace: "default", + Name: "test-execution-hook", + }, + Spec: appsv1alpha1.ExecutionHookSpec{ + ActionName: "test-hook-action", + PodSelection: appsv1alpha1.PodSelection{ + PodContainerSelector: &appsv1alpha1.PodContainerSelector{}, }, }, - } - - podContainers, err := r.selectPodContainers("test-ns", &podSelector) - expected := []appsv1alpha1.PodContainerNames{ - { - PodName: "app1-1", - ContainerNames: []string{"my-awesome-app", "auth-proxy", "metrics-proxy", "rbac-proxy"}, - }, - { - PodName: "app1-2", - ContainerNames: []string{"my-awesome-app", "auth-proxy", "metrics-proxy", "rbac-proxy"}, + }, + &appsv1alpha1.HookAction{ + ObjectMeta: metav1.ObjectMeta{ + Namespace: "default", + Name: "test-execution-hook", }, + }, + } + r := &ExecutionHookReconciler{ + Client: fake.NewFakeClient(objs...), + Log: log.Log, + } + actualResult, err := r.Reconcile(ctrl.Request{ + NamespacedName: types.NamespacedName{Namespace: "default", Name: "test-execution-hook"}, + }) + Expect(actualResult).To(BeEquivalentTo(ctrl.Result{})) + Expect(err).To(HaveOccurred()) + th := &appsv1alpha1.ExecutionHook{} + + // Wait for reconciliation to happen. + Eventually(func() bool { + if err := k8sClient.Get(ctx, + client.ObjectKey{Name: "test-execution-hook", Namespace: "default"}, th); err != nil { + return false } + return len(th.Finalizers) > 0 + }, timeout).Should(BeTrue()) + }) +}) - Expect(err).To(BeNil()) - Expect(podContainers).To(BeEquivalentTo(expected)) - }) +var _ = Describe("selectPodContainers", func() { + BeforeEach(func() {}) + AfterEach(func() {}) - It("Should return pod matching labelSelector with MatchLables and MatchExpressions with all containers", func() { - objs := getTestPods() - r := &ExecutionHookReconciler{ - Client: fake.NewFakeClient(objs...), - Log: log.Log, - } + It("should returns nil result and error when PodSelection is nil", func() { + r := &ExecutionHookReconciler{ + Client: k8sClient, + Log: log.Log, + } + actual, err := r.selectPodContainers("test-ns", nil) + Expect(err).NotTo(BeNil()) + Expect(actual).To(BeNil()) + }) + It("should returns empty result and nil error when label selector in the PodSelection.PodSelector is nil", func() { + r := &ExecutionHookReconciler{ + Client: k8sClient, + Log: log.Log, + } + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: nil, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: nil, + }, + } + actual, err := r.selectPodContainers("test-ns", &podSelector) + Expect(err).To(BeNil()) + Expect(actual).To(BeEmpty()) - podSelector := appsv1alpha1.PodSelection{ - PodContainerNamesList: nil, - PodContainerSelector: &appsv1alpha1.PodContainerSelector{ - PodSelector: &metav1.LabelSelector{ - MatchLabels: map[string]string{ - "app": "app1", - "owner": "admin", - }, - MatchExpressions: []metav1.LabelSelectorRequirement{ - { - Key: "environment", - Operator: metav1.LabelSelectorOpNotIn, - Values: []string{"test", "staging"}, - }, - }, + }) + It("should return pod matching labelSelector with MatchLables only with all containers", func() { + // setup test pods + objs := getTestPods() + + r := &ExecutionHookReconciler{ + Client: fake.NewFakeClient(objs...), + Log: log.Log, + } + + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: nil, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: &metav1.LabelSelector{ + MatchLabels: map[string]string{ + "app": "app1", + "owner": "admin", }, }, - } - - podContainers, err := r.selectPodContainers("test-ns", &podSelector) - expected := []appsv1alpha1.PodContainerNames{ - {PodName: "app1-1", - ContainerNames: []string{"my-awesome-app", "auth-proxy", "metrics-proxy", "rbac-proxy"}}, - } + }, + } - Expect(err).To(BeNil()) - Expect(podContainers).To(BeEquivalentTo(expected)) - }) + podContainers, err := r.selectPodContainers("test-ns", &podSelector) + expected := []appsv1alpha1.PodContainerNames{ + { + PodName: "app1-1", + ContainerNames: []string{"my-awesome-app", "auth-proxy", "metrics-proxy", "rbac-proxy"}, + }, + { + PodName: "app1-2", + ContainerNames: []string{"my-awesome-app", "auth-proxy", "metrics-proxy", "rbac-proxy"}, + }, + } - It("should return pod matching labelSelector with MatchLables only with specific containers", func() { - // setup test pods - objs := getTestPods() + Expect(err).To(BeNil()) + Expect(podContainers).To(BeEquivalentTo(expected)) + }) - r := &ExecutionHookReconciler{ - Client: fake.NewFakeClient(objs...), - Log: log.Log, - } + It("Should return pod matching labelSelector with MatchLables and MatchExpressions with all containers", func() { + objs := getTestPods() + r := &ExecutionHookReconciler{ + Client: fake.NewFakeClient(objs...), + Log: log.Log, + } - podSelector := appsv1alpha1.PodSelection{ - PodContainerNamesList: nil, - PodContainerSelector: &appsv1alpha1.PodContainerSelector{ - PodSelector: &metav1.LabelSelector{ - MatchLabels: map[string]string{ - "app": "app1", - "owner": "admin", + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: nil, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: &metav1.LabelSelector{ + MatchLabels: map[string]string{ + "app": "app1", + "owner": "admin", + }, + MatchExpressions: []metav1.LabelSelectorRequirement{ + { + Key: "environment", + Operator: metav1.LabelSelectorOpNotIn, + Values: []string{"test", "staging"}, }, }, - ContainerList: []string{"my-awesome-app"}, }, - } + }, + } - podContainers, err := r.selectPodContainers("test-ns", &podSelector) - expected := []appsv1alpha1.PodContainerNames{ - { - PodName: "app1-1", - ContainerNames: []string{"my-awesome-app"}, - }, - { - PodName: "app1-2", - ContainerNames: []string{"my-awesome-app"}, - }, - } + podContainers, err := r.selectPodContainers("test-ns", &podSelector) + expected := []appsv1alpha1.PodContainerNames{ + {PodName: "app1-1", + ContainerNames: []string{"my-awesome-app", "auth-proxy", "metrics-proxy", "rbac-proxy"}}, + } - Expect(err).To(BeNil()) - Expect(podContainers).To(BeEquivalentTo(expected)) - }) + Expect(err).To(BeNil()) + Expect(podContainers).To(BeEquivalentTo(expected)) + }) - It("Should return pod matching labelSelector with MatchLables and MatchExpressions with specific containers", func() { - objs := getTestPods() - r := &ExecutionHookReconciler{ - Client: fake.NewFakeClient(objs...), - Log: log.Log, - } + It("should return pod matching labelSelector with MatchLables only with specific containers", func() { + // setup test pods + objs := getTestPods() - podSelector := appsv1alpha1.PodSelection{ - PodContainerNamesList: nil, - PodContainerSelector: &appsv1alpha1.PodContainerSelector{ - PodSelector: &metav1.LabelSelector{ - MatchLabels: map[string]string{ - "app": "app1", - "owner": "admin", - }, - MatchExpressions: []metav1.LabelSelectorRequirement{ - { - Key: "environment", - Operator: metav1.LabelSelectorOpNotIn, - Values: []string{"test", "staging"}, - }, - }, + r := &ExecutionHookReconciler{ + Client: fake.NewFakeClient(objs...), + Log: log.Log, + } + + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: nil, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: &metav1.LabelSelector{ + MatchLabels: map[string]string{ + "app": "app1", + "owner": "admin", }, - ContainerList: []string{"my-awesome-app"}, }, - } + ContainerList: []string{"my-awesome-app"}, + }, + } - podContainers, err := r.selectPodContainers("test-ns", &podSelector) - expected := []appsv1alpha1.PodContainerNames{ - { - PodName: "app1-1", - ContainerNames: []string{"my-awesome-app"}, - }, - } + podContainers, err := r.selectPodContainers("test-ns", &podSelector) + expected := []appsv1alpha1.PodContainerNames{ + { + PodName: "app1-1", + ContainerNames: []string{"my-awesome-app"}, + }, + { + PodName: "app1-2", + ContainerNames: []string{"my-awesome-app"}, + }, + } - Expect(err).To(BeNil()) - Expect(podContainers).To(BeEquivalentTo(expected)) - }) + Expect(err).To(BeNil()) + Expect(podContainers).To(BeEquivalentTo(expected)) + }) - It("should return podContainerNamesList when supplied", func() { - objs := getTestPods() - r := &ExecutionHookReconciler{ - Client: fake.NewFakeClient(objs...), - Log: log.Log, - } + It("Should return pod matching labelSelector with MatchLables and MatchExpressions with specific containers", func() { + objs := getTestPods() + r := &ExecutionHookReconciler{ + Client: fake.NewFakeClient(objs...), + Log: log.Log, + } - podSelector := appsv1alpha1.PodSelection{ - PodContainerNamesList: []appsv1alpha1.PodContainerNames{ - { - PodName: "some-random=pod", - ContainerNames: []string{"c1", "c2", "c3"}, + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: nil, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: &metav1.LabelSelector{ + MatchLabels: map[string]string{ + "app": "app1", + "owner": "admin", }, - }, - PodContainerSelector: &appsv1alpha1.PodContainerSelector{ - PodSelector: &metav1.LabelSelector{ - MatchLabels: map[string]string{ - "app": "app1", - "owner": "admin", - }, - MatchExpressions: []metav1.LabelSelectorRequirement{ - { - Key: "environment", - Operator: metav1.LabelSelectorOpNotIn, - Values: []string{"test", "staging"}, - }, + MatchExpressions: []metav1.LabelSelectorRequirement{ + { + Key: "environment", + Operator: metav1.LabelSelectorOpNotIn, + Values: []string{"test", "staging"}, }, }, }, - } + ContainerList: []string{"my-awesome-app"}, + }, + } + + podContainers, err := r.selectPodContainers("test-ns", &podSelector) + expected := []appsv1alpha1.PodContainerNames{ + { + PodName: "app1-1", + ContainerNames: []string{"my-awesome-app"}, + }, + } + + Expect(err).To(BeNil()) + Expect(podContainers).To(BeEquivalentTo(expected)) + }) + + It("should return podContainerNamesList when supplied", func() { + objs := getTestPods() + r := &ExecutionHookReconciler{ + Client: fake.NewFakeClient(objs...), + Log: log.Log, + } - acutal, err := r.selectPodContainers("test-ns", &podSelector) - expected := []appsv1alpha1.PodContainerNames{ + podSelector := appsv1alpha1.PodSelection{ + PodContainerNamesList: []appsv1alpha1.PodContainerNames{ { PodName: "some-random=pod", ContainerNames: []string{"c1", "c2", "c3"}, }, - } - Expect(err).To(BeNil()) - Expect(acutal).To(BeEquivalentTo(expected)) + }, + PodContainerSelector: &appsv1alpha1.PodContainerSelector{ + PodSelector: &metav1.LabelSelector{ + MatchLabels: map[string]string{ + "app": "app1", + "owner": "admin", + }, + MatchExpressions: []metav1.LabelSelectorRequirement{ + { + Key: "environment", + Operator: metav1.LabelSelectorOpNotIn, + Values: []string{"test", "staging"}, + }, + }, + }, + }, + } + + acutal, err := r.selectPodContainers("test-ns", &podSelector) + expected := []appsv1alpha1.PodContainerNames{ + { + PodName: "some-random=pod", + ContainerNames: []string{"c1", "c2", "c3"}, + }, + } + Expect(err).To(BeNil()) + Expect(acutal).To(BeEquivalentTo(expected)) - }) }) }) @@ -353,21 +455,19 @@ var _ = Describe("getSucceededPodContainers", func() { t := true f := false - Context("From ExecutionHook.Status, get podContainerNames on which hookaction has completed successfully", func() { - It("should return empty result when hook is nil", func() { - actual := r.getSucceededPodContainers(nil) + It("should return empty result when hook is nil", func() { + actual := r.getSucceededPodContainers(nil) - Expect(actual).To(BeEmpty()) - }) + Expect(actual).To(BeEmpty()) + }) - It("should return empty result when ExecutionHook.Status.HookStatuses is nil", func() { - actual := r.getSucceededPodContainers(&appsv1alpha1.ExecutionHook{ - Status: appsv1alpha1.ExecutionHookStatus{ - HookStatuses: nil, - }, - }) - Expect(actual).To(BeEmpty()) + It("should return empty result when ExecutionHook.Status.HookStatuses is nil", func() { + actual := r.getSucceededPodContainers(&appsv1alpha1.ExecutionHook{ + Status: appsv1alpha1.ExecutionHookStatus{ + HookStatuses: nil, + }, }) + Expect(actual).To(BeEmpty()) }) It("should return empty result when ExecutionHook.Status.HookStatuses is empty", func() { @@ -470,100 +570,162 @@ var _ = Describe("filterSucceeded", func() { }, } - Context("Filter succeededPodContainerNames", func() { - It("should return empty result when selectedPodContainerNames is empty", func() { - actual := r.filterSucceeded(&testExecutionHook, []appsv1alpha1.PodContainerNames{}) - Expect(actual).To(BeEmpty()) - }) + It("should return empty result when selectedPodContainerNames is empty", func() { + actual := r.filterSucceeded(&testExecutionHook, []appsv1alpha1.PodContainerNames{}) + Expect(actual).To(BeEmpty()) + }) - It("should return correct result when all podContainerNames have a success status", func() { - allSuccessExecutionHook := appsv1alpha1.ExecutionHook{ - Status: appsv1alpha1.ExecutionHookStatus{ - HookStatuses: []appsv1alpha1.ContainerExecutionHookStatus{ - { - PodName: "super-useful-app", - ContainerName: "app", - Succeed: &t, - }, - { - PodName: "somewhat-useful-app", - ContainerName: "app", - Succeed: &t, - }, + It("should return correct result when all podContainerNames have a success status", func() { + allSuccessExecutionHook := appsv1alpha1.ExecutionHook{ + Status: appsv1alpha1.ExecutionHookStatus{ + HookStatuses: []appsv1alpha1.ContainerExecutionHookStatus{ + { + PodName: "super-useful-app", + ContainerName: "app", + Succeed: &t, + }, + { + PodName: "somewhat-useful-app", + ContainerName: "app", + Succeed: &t, }, }, - } - selectedPodContainerNames := []appsv1alpha1.PodContainerNames{ - { - PodName: "super-useful-app", - ContainerNames: []string{"app"}, - }, - { - PodName: "somewhat-useful-app", - ContainerNames: []string{"app"}, - }, - } - actual := r.filterSucceeded(&allSuccessExecutionHook, selectedPodContainerNames) - Expect(actual).To(BeEmpty()) - }) + }, + } + selectedPodContainerNames := []appsv1alpha1.PodContainerNames{ + { + PodName: "super-useful-app", + ContainerNames: []string{"app"}, + }, + { + PodName: "somewhat-useful-app", + ContainerNames: []string{"app"}, + }, + } + actual := r.filterSucceeded(&allSuccessExecutionHook, selectedPodContainerNames) + Expect(actual).To(BeEmpty()) + }) - It("should return correct result when all podContainerNames have a failed status", func() { + It("should return correct result when all podContainerNames have a failed status", func() { - allFailsExecutionHook := appsv1alpha1.ExecutionHook{ - Status: appsv1alpha1.ExecutionHookStatus{ - HookStatuses: []appsv1alpha1.ContainerExecutionHookStatus{ - { - PodName: "super-useful-app", - ContainerName: "app", - Succeed: &f, - }, - { - PodName: "somewhat-useful-app", - ContainerName: "app", - Succeed: &f, - }, + allFailsExecutionHook := appsv1alpha1.ExecutionHook{ + Status: appsv1alpha1.ExecutionHookStatus{ + HookStatuses: []appsv1alpha1.ContainerExecutionHookStatus{ + { + PodName: "super-useful-app", + ContainerName: "app", + Succeed: &f, + }, + { + PodName: "somewhat-useful-app", + ContainerName: "app", + Succeed: &f, }, }, - } - selectedPodContainerNames := []appsv1alpha1.PodContainerNames{ - { - PodName: "super-useful-app", - ContainerNames: []string{"app"}, - }, - { - PodName: "somewhat-useful-app", - ContainerNames: []string{"app"}, - }, - } + }, + } + selectedPodContainerNames := []appsv1alpha1.PodContainerNames{ + { + PodName: "super-useful-app", + ContainerNames: []string{"app"}, + }, + { + PodName: "somewhat-useful-app", + ContainerNames: []string{"app"}, + }, + } - actual := r.filterSucceeded(&allFailsExecutionHook, selectedPodContainerNames) - Expect(actual).To(BeEquivalentTo(selectedPodContainerNames)) - }) + actual := r.filterSucceeded(&allFailsExecutionHook, selectedPodContainerNames) + Expect(actual).To(BeEquivalentTo(selectedPodContainerNames)) + }) - It("should return only those podContainerNames that have a failed status", func() { - selectedPodContainerNames := []appsv1alpha1.PodContainerNames{ - { - PodName: "super-useful-app", - ContainerNames: []string{"app", "auth-proxy", "metric-proxy"}, - }, - { - PodName: "somewhat-useful-app", - ContainerNames: []string{"app", "auth-proxy", "metric-proxy"}, - }, - } + It("should return only those podContainerNames that have a failed status", func() { + selectedPodContainerNames := []appsv1alpha1.PodContainerNames{ + { + PodName: "super-useful-app", + ContainerNames: []string{"app", "auth-proxy", "metric-proxy"}, + }, + { + PodName: "somewhat-useful-app", + ContainerNames: []string{"app", "auth-proxy", "metric-proxy"}, + }, + } - expected := []appsv1alpha1.PodContainerNames{ - { - PodName: "super-useful-app", - ContainerNames: []string{"auth-proxy", "metric-proxy"}, + expected := []appsv1alpha1.PodContainerNames{ + { + PodName: "super-useful-app", + ContainerNames: []string{"auth-proxy", "metric-proxy"}, + }, + { + PodName: "somewhat-useful-app", + ContainerNames: []string{"auth-proxy", "metric-proxy"}, + }, + } + actual := r.filterSucceeded(&testExecutionHook, selectedPodContainerNames) + Expect(actual).To(BeEquivalentTo(expected)) + }) +}) + +var _ = Describe("getPodContainerNames returns names of all containers in a pod as []string", func() { + BeforeEach(func() {}) + AfterEach(func() {}) + It("should return all containers in a pod", func() { + testCases := []struct { + pod corev1.Pod + expectedContainers []string + }{ + { + pod: corev1.Pod{ + ObjectMeta: metav1.ObjectMeta{ + Name: "app1-1", + Namespace: "test-ns", + Labels: map[string]string{ + "app": "app1", + "owner": "admin", + "environment": "prod", + }, + }, + Spec: corev1.PodSpec{ + Containers: []corev1.Container{ + { + Name: "my-awesome-app", + }, + { + Name: "auth-proxy", + }, + { + Name: "metrics-proxy", + }, + { + Name: "rbac-proxy", + }, + }, + }, }, - { - PodName: "somewhat-useful-app", - ContainerNames: []string{"auth-proxy", "metric-proxy"}, + expectedContainers: []string{"my-awesome-app", "auth-proxy", "metrics-proxy", "rbac-proxy"}, + }, + { + pod: corev1.Pod{ + ObjectMeta: metav1.ObjectMeta{ + Name: "app1-1", + Namespace: "test-ns", + Labels: map[string]string{ + "app": "app1", + "owner": "admin", + "environment": "prod", + }, + }, + Spec: corev1.PodSpec{ + Containers: []corev1.Container{}, + }, }, - } - actual := r.filterSucceeded(&testExecutionHook, selectedPodContainerNames) - Expect(actual).To(BeEquivalentTo(expected)) - }) + expectedContainers: []string{}, + }, + } + + for _, tc := range testCases { + actualContainers := getPodContainerNames(tc.pod) + Expect(actualContainers).To(BeEquivalentTo(tc.expectedContainers)) + } }) }) diff --git a/controllers/suite_test.go b/controllers/suite_test.go index e16edbc..9e797a6 100644 --- a/controllers/suite_test.go +++ b/controllers/suite_test.go @@ -17,8 +17,10 @@ limitations under the License. package controllers import ( + "context" "path/filepath" "testing" + "time" . "github.com/onsi/ginkgo" . "github.com/onsi/gomega" @@ -36,9 +38,16 @@ import ( // These tests use Ginkgo (BDD-style Go testing framework). Refer to // http://onsi.github.io/ginkgo/ to learn more about Ginkgo. -var cfg *rest.Config -var k8sClient client.Client -var testEnv *envtest.Environment +const ( + timeout = time.Second * 10 +) + +var ( + cfg *rest.Config + k8sClient client.Client + testEnv *envtest.Environment + ctx = context.Background() +) func TestAPIs(t *testing.T) { RegisterFailHandler(Fail)