forked from kubernetes-sigs/controller-runtime
/
server.go
134 lines (113 loc) · 4.14 KB
/
server.go
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/*
Copyright 2016 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 envtest
import (
"os"
"path/filepath"
apiextensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
"k8s.io/client-go/rest"
"sigs.k8s.io/controller-runtime/pkg/client/config"
"sigs.k8s.io/testing_frameworks/integration"
)
// Default binary path for test framework
const (
envKubeAPIServerBin = "TEST_ASSET_KUBE_APISERVER"
envEtcdBin = "TEST_ASSET_ETCD"
envKubectlBin = "TEST_ASSET_KUBECTL"
envKubebuilderPath = "KUBEBUILDER_ASSETS"
defaultKubebuilderPath = "/usr/local/kubebuilder/bin"
StartTimeout = 60
StopTimeout = 60
)
func defaultAssetPath(binary string) string {
assetPath := os.Getenv(envKubebuilderPath)
if assetPath == "" {
assetPath = defaultKubebuilderPath
}
return filepath.Join(assetPath, binary)
}
// APIServerDefaultArgs are flags necessary to bring up apiserver.
// TODO: create test framework interface to append flag to default flags.
var defaultKubeAPIServerFlags = []string{
"--etcd-servers={{ if .EtcdURL }}{{ .EtcdURL.String }}{{ end }}",
"--cert-dir={{ .CertDir }}",
"--insecure-port={{ if .URL }}{{ .URL.Port }}{{ end }}",
"--insecure-bind-address={{ if .URL }}{{ .URL.Hostname }}{{ end }}",
"--secure-port=0",
"--admission-control=AlwaysAdmit",
}
// Environment creates a Kubernetes test environment that will start / stop the Kubernetes control plane and
// install extension APIs
type Environment struct {
// ControlPlane is the ControlPlane including the apiserver and etcd
ControlPlane integration.ControlPlane
// Config can be used to talk to the apiserver
Config *rest.Config
// CRDs is a list of CRDs to install
CRDs []*apiextensionsv1beta1.CustomResourceDefinition
// CRDDirectoryPaths is a list of paths containing CRD yaml or json configs.
CRDDirectoryPaths []string
// UseExisting indicates that this environments should use an
// existing kubeconfig, instead of trying to stand up a new control plane.
// This is useful in cases that need aggregated API servers and the like.
UseExistingCluster bool
}
// Stop stops a running server
func (te *Environment) Stop() error {
if te.UseExistingCluster {
return nil
}
return te.ControlPlane.Stop()
}
// Start starts a local Kubernetes server and updates te.ApiserverPort with the port it is listening on
func (te *Environment) Start() (*rest.Config, error) {
if te.UseExistingCluster {
if te.Config == nil {
// we want to allow people to pass in their own config, so
// only load a config if it hasn't already been set.
var err error
te.Config, err = config.GetConfig()
if err != nil {
return nil, err
}
}
} else {
te.ControlPlane = integration.ControlPlane{}
te.ControlPlane.APIServer = &integration.APIServer{Args: defaultKubeAPIServerFlags}
if os.Getenv(envKubeAPIServerBin) == "" {
te.ControlPlane.APIServer.Path = defaultAssetPath("kube-apiserver")
}
if os.Getenv(envEtcdBin) == "" {
te.ControlPlane.Etcd = &integration.Etcd{Path: defaultAssetPath("etcd")}
}
if os.Getenv(envKubectlBin) == "" {
// we can't just set the path manually (it's behind a function), so set the environment variable instead
if err := os.Setenv(envKubectlBin, defaultAssetPath("kubectl")); err != nil {
return nil, err
}
}
// Start the control plane - retry if it fails
if err := te.ControlPlane.Start(); err != nil {
return nil, err
}
// Create the *rest.Config for creating new clients
te.Config = &rest.Config{
Host: te.ControlPlane.APIURL().Host,
}
}
_, err := InstallCRDs(te.Config, CRDInstallOptions{
Paths: te.CRDDirectoryPaths,
CRDs: te.CRDs,
})
return te.Config, err
}