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sandbox_list.go
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/
sandbox_list.go
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/*
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 server
import (
"fmt"
"github.com/golang/glog"
"golang.org/x/net/context"
"github.com/containerd/containerd/api/services/execution"
"github.com/containerd/containerd/api/types/task"
"k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
"github.com/kubernetes-incubator/cri-containerd/pkg/metadata"
)
// ListPodSandbox returns a list of Sandbox.
func (c *criContainerdService) ListPodSandbox(ctx context.Context, r *runtime.ListPodSandboxRequest) (retRes *runtime.ListPodSandboxResponse, retErr error) {
glog.V(4).Infof("ListPodSandbox with filter %+v", r.GetFilter())
defer func() {
if retErr == nil {
glog.V(4).Infof("ListPodSandbox returns sandboxes %+v", retRes.GetItems())
}
}()
// List all sandbox metadata from store.
sandboxesInStore, err := c.sandboxStore.List()
if err != nil {
return nil, fmt.Errorf("failed to list metadata from sandbox store: %v", err)
}
resp, err := c.taskService.List(ctx, &execution.ListRequest{})
if err != nil {
return nil, fmt.Errorf("failed to list sandbox containers: %v", err)
}
sandboxesInContainerd := resp.Tasks
var sandboxes []*runtime.PodSandbox
for _, sandboxInStore := range sandboxesInStore {
var sandboxInContainerd *task.Task
for _, s := range sandboxesInContainerd {
if s.ID == sandboxInStore.ID {
sandboxInContainerd = s
break
}
}
// Set sandbox state to NOTREADY by default.
state := runtime.PodSandboxState_SANDBOX_NOTREADY
// If the sandbox container is running, return the sandbox as READY.
if sandboxInContainerd != nil && sandboxInContainerd.Status == task.StatusRunning {
state = runtime.PodSandboxState_SANDBOX_READY
}
sandboxes = append(sandboxes, toCRISandbox(sandboxInStore, state))
}
sandboxes = c.filterCRISandboxes(sandboxes, r.GetFilter())
return &runtime.ListPodSandboxResponse{Items: sandboxes}, nil
}
// toCRISandbox converts sandbox metadata into CRI pod sandbox.
func toCRISandbox(meta *metadata.SandboxMetadata, state runtime.PodSandboxState) *runtime.PodSandbox {
return &runtime.PodSandbox{
Id: meta.ID,
Metadata: meta.Config.GetMetadata(),
State: state,
CreatedAt: meta.CreatedAt,
Labels: meta.Config.GetLabels(),
Annotations: meta.Config.GetAnnotations(),
}
}
// filterCRISandboxes filters CRISandboxes.
func (c *criContainerdService) filterCRISandboxes(sandboxes []*runtime.PodSandbox, filter *runtime.PodSandboxFilter) []*runtime.PodSandbox {
if filter == nil {
return sandboxes
}
var filterID string
if filter.GetId() != "" {
// Handle truncate id. Use original filter if failed to convert.
var err error
filterID, err = c.sandboxIDIndex.Get(filter.GetId())
if err != nil {
filterID = filter.GetId()
}
}
filtered := []*runtime.PodSandbox{}
for _, s := range sandboxes {
// Filter by id
if filterID != "" && filterID != s.Id {
continue
}
// Filter by state
if filter.GetState() != nil && filter.GetState().GetState() != s.State {
continue
}
// Filter by label
if filter.GetLabelSelector() != nil {
match := true
for k, v := range filter.GetLabelSelector() {
got, ok := s.Labels[k]
if !ok || got != v {
match = false
break
}
}
if !match {
continue
}
}
filtered = append(filtered, s)
}
return filtered
}