85 lines
2.7 KiB
Go
85 lines
2.7 KiB
Go
/*
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Copyright The containerd 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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"io"
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"github.com/containerd/containerd"
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"github.com/containerd/containerd/log"
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"github.com/pkg/errors"
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"golang.org/x/net/context"
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"k8s.io/client-go/tools/remotecommand"
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runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
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cio "github.com/containerd/containerd/pkg/cri/io"
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)
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// Attach prepares a streaming endpoint to attach to a running container, and returns the address.
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func (c *criService) Attach(ctx context.Context, r *runtime.AttachRequest) (*runtime.AttachResponse, error) {
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cntr, err := c.containerStore.Get(r.GetContainerId())
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if err != nil {
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return nil, errors.Wrap(err, "failed to find container in store")
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}
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state := cntr.Status.Get().State()
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if state != runtime.ContainerState_CONTAINER_RUNNING {
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return nil, errors.Errorf("container is in %s state", criContainerStateToString(state))
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}
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return c.streamServer.GetAttach(r)
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}
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func (c *criService) attachContainer(ctx context.Context, id string, stdin io.Reader, stdout, stderr io.WriteCloser,
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tty bool, resize <-chan remotecommand.TerminalSize) error {
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ctx, cancel := context.WithCancel(ctx)
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defer cancel()
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// Get container from our container store.
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cntr, err := c.containerStore.Get(id)
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if err != nil {
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return errors.Wrapf(err, "failed to find container %q in store", id)
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}
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id = cntr.ID
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state := cntr.Status.Get().State()
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if state != runtime.ContainerState_CONTAINER_RUNNING {
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return errors.Errorf("container is in %s state", criContainerStateToString(state))
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}
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task, err := cntr.Container.Task(ctx, nil)
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if err != nil {
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return errors.Wrap(err, "failed to load task")
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}
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handleResizing(ctx, resize, func(size remotecommand.TerminalSize) {
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if err := task.Resize(ctx, uint32(size.Width), uint32(size.Height)); err != nil {
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log.G(ctx).WithError(err).Errorf("Failed to resize task %q console", id)
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}
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})
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opts := cio.AttachOptions{
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Stdin: stdin,
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Stdout: stdout,
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Stderr: stderr,
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Tty: tty,
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StdinOnce: cntr.Config.StdinOnce,
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CloseStdin: func() error {
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return task.CloseIO(ctx, containerd.WithStdinCloser)
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},
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}
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// TODO(random-liu): Figure out whether we need to support historical output.
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cntr.IO.Attach(opts)
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return nil
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}
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