118 lines
4.2 KiB
Go
118 lines
4.2 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package server
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import (
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"fmt"
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"github.com/containerd/containerd/api/services/tasks/v1"
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"github.com/containerd/containerd/errdefs"
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"github.com/golang/glog"
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"golang.org/x/net/context"
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"k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
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"github.com/kubernetes-incubator/cri-containerd/pkg/store"
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)
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// RemovePodSandbox removes the sandbox. If there are running containers in the
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// sandbox, they should be forcibly removed.
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func (c *criContainerdService) RemovePodSandbox(ctx context.Context, r *runtime.RemovePodSandboxRequest) (retRes *runtime.RemovePodSandboxResponse, retErr error) {
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glog.V(2).Infof("RemovePodSandbox for sandbox %q", r.GetPodSandboxId())
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defer func() {
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if retErr == nil {
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glog.V(2).Infof("RemovePodSandbox %q returns successfully", r.GetPodSandboxId())
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}
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}()
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sandbox, err := c.sandboxStore.Get(r.GetPodSandboxId())
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if err != nil {
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if err != store.ErrNotExist {
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return nil, fmt.Errorf("an error occurred when try to find sandbox %q: %v",
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r.GetPodSandboxId(), err)
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}
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// Do not return error if the id doesn't exist.
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glog.V(5).Infof("RemovePodSandbox called for sandbox %q that does not exist",
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r.GetPodSandboxId())
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return &runtime.RemovePodSandboxResponse{}, nil
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}
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// Use the full sandbox id.
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id := sandbox.ID
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// Return error if sandbox container is not fully stopped.
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// TODO(random-liu): [P0] Make sure network is torn down, may need to introduce a state.
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_, err = c.taskService.Get(ctx, &tasks.GetTaskRequest{ContainerID: id})
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if err != nil && !isContainerdGRPCNotFoundError(err) {
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return nil, fmt.Errorf("failed to get sandbox container info for %q: %v", id, err)
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}
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if err == nil {
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return nil, fmt.Errorf("sandbox container %q is not fully stopped", id)
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}
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// Remove sandbox container snapshot.
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if err := c.snapshotService.Remove(ctx, id); err != nil {
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if !errdefs.IsNotFound(err) {
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return nil, fmt.Errorf("failed to remove sandbox container snapshot %q: %v", id, err)
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}
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glog.V(5).Infof("Remove called for snapshot %q that does not exist", id)
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}
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// Remove all containers inside the sandbox.
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// NOTE(random-liu): container could still be created after this point, Kubelet should
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// not rely on this behavior.
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// TODO(random-liu): Introduce an intermediate state to avoid container creation after
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// this point.
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cntrs := c.containerStore.List()
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for _, cntr := range cntrs {
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if cntr.SandboxID != id {
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continue
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}
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_, err = c.RemoveContainer(ctx, &runtime.RemoveContainerRequest{ContainerId: cntr.ID})
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if err != nil {
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return nil, fmt.Errorf("failed to remove container %q: %v", cntr.ID, err)
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}
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}
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// TODO(random-liu): [P1] Remove permanent namespace once used.
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// Cleanup the sandbox root directory.
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sandboxRootDir := getSandboxRootDir(c.rootDir, id)
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if err := c.os.RemoveAll(sandboxRootDir); err != nil {
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return nil, fmt.Errorf("failed to remove sandbox root directory %q: %v",
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sandboxRootDir, err)
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}
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// Delete sandbox container.
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if err := c.containerService.Delete(ctx, id); err != nil {
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if !isContainerdGRPCNotFoundError(err) {
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return nil, fmt.Errorf("failed to delete sandbox container %q: %v", id, err)
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}
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glog.V(5).Infof("Remove called for sandbox container %q that does not exist", id, err)
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}
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// Remove sandbox from sandbox store. Note that once the sandbox is successfully
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// deleted:
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// 1) ListPodSandbox will not include this sandbox.
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// 2) PodSandboxStatus and StopPodSandbox will return error.
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// 3) On-going operations which have held the reference will not be affected.
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c.sandboxStore.Delete(id)
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// Release the sandbox name reserved for the sandbox.
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c.sandboxNameIndex.ReleaseByKey(id)
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return &runtime.RemovePodSandboxResponse{}, nil
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}
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