113 lines
4.1 KiB
Go
113 lines
4.1 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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"github.com/containerd/containerd"
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"github.com/containerd/containerd/errdefs"
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"github.com/docker/docker/pkg/system"
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"github.com/pkg/errors"
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"golang.org/x/net/context"
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runtime "k8s.io/kubernetes/pkg/kubelet/apis/cri/runtime/v1alpha2"
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"github.com/containerd/cri/pkg/log"
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"github.com/containerd/cri/pkg/store"
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sandboxstore "github.com/containerd/cri/pkg/store/sandbox"
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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 *criService) RemovePodSandbox(ctx context.Context, r *runtime.RemovePodSandboxRequest) (*runtime.RemovePodSandboxResponse, error) {
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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, errors.Wrapf(err, "an error occurred when try to find sandbox %q",
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r.GetPodSandboxId())
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}
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// Do not return error if the id doesn't exist.
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log.Tracef("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 still running or unknown.
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state := sandbox.Status.Get().State
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if state == sandboxstore.StateReady || state == sandboxstore.StateUnknown {
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return nil, errors.Errorf("sandbox container %q is not fully stopped", id)
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}
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// Return error if sandbox network namespace is not closed yet.
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if sandbox.NetNS != nil {
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nsPath := sandbox.NetNS.GetPath()
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if closed, err := sandbox.NetNS.Closed(); err != nil {
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return nil, errors.Wrapf(err, "failed to check sandbox network namespace %q closed", nsPath)
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} else if !closed {
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return nil, errors.Errorf("sandbox network namespace %q is not fully closed", nsPath)
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}
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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, errors.Wrapf(err, "failed to remove container %q", cntr.ID)
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}
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}
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// Cleanup the sandbox root directories.
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sandboxRootDir := c.getSandboxRootDir(id)
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if err := system.EnsureRemoveAll(sandboxRootDir); err != nil {
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return nil, errors.Wrapf(err, "failed to remove sandbox root directory %q",
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sandboxRootDir)
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}
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volatileSandboxRootDir := c.getVolatileSandboxRootDir(id)
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if err := system.EnsureRemoveAll(volatileSandboxRootDir); err != nil {
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return nil, errors.Wrapf(err, "failed to remove volatile sandbox root directory %q",
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volatileSandboxRootDir)
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}
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// Delete sandbox container.
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if err := sandbox.Container.Delete(ctx, containerd.WithSnapshotCleanup); err != nil {
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if !errdefs.IsNotFound(err) {
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return nil, errors.Wrapf(err, "failed to delete sandbox container %q", id)
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}
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log.Tracef("Remove called for sandbox container %q that does not exist", id)
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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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