136 lines
3.6 KiB
Go
136 lines
3.6 KiB
Go
/*
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Copyright 2020 Docker Compose CLI 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 compose
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import (
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"context"
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"fmt"
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"io"
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"strings"
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"github.com/docker/compose-cli/api/compose"
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convert "github.com/docker/compose-cli/local/moby"
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"github.com/compose-spec/compose-go/types"
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moby "github.com/docker/docker/api/types"
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"github.com/docker/docker/pkg/stdcopy"
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)
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func (s *composeService) attach(ctx context.Context, project *types.Project, consumer compose.ContainerEventListener) (Containers, error) {
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containers, err := s.getContainers(ctx, project, oneOffExclude)
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if err != nil {
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return nil, err
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}
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containers.sorted() // This enforce predictable colors assignment
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var names []string
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for _, c := range containers {
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names = append(names, getCanonicalContainerName(c))
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}
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fmt.Printf("Attaching to %s\n", strings.Join(names, ", "))
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for _, container := range containers {
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consumer(compose.ContainerEvent{
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Type: compose.ContainerEventAttach,
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Source: container.ID,
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Name: getContainerNameWithoutProject(container),
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Service: container.Labels[serviceLabel],
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})
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err := s.attachContainer(ctx, container, consumer, project)
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if err != nil {
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return nil, err
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}
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}
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return containers, nil
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}
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func (s *composeService) attachContainer(ctx context.Context, container moby.Container, consumer compose.ContainerEventListener, project *types.Project) error {
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serviceName := container.Labels[serviceLabel]
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w := getWriter(getContainerNameWithoutProject(container), serviceName, container.ID, consumer)
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service, err := project.GetService(serviceName)
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if err != nil {
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return err
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}
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return s.attachContainerStreams(ctx, container, service.Tty, nil, w)
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}
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func (s *composeService) attachContainerStreams(ctx context.Context, container moby.Container, tty bool, r io.Reader, w io.Writer) error {
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stdin, stdout, err := s.getContainerStreams(ctx, container)
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if err != nil {
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return err
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}
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go func() {
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<-ctx.Done()
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stdout.Close() //nolint:errcheck
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if stdin != nil {
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stdin.Close() //nolint:errcheck
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}
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}()
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if r != nil && stdin != nil {
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go func() {
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io.Copy(stdin, r) //nolint:errcheck
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}()
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}
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if w != nil {
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go func() {
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if tty {
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io.Copy(w, stdout) // nolint:errcheck
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} else {
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stdcopy.StdCopy(w, w, stdout) // nolint:errcheck
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}
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}()
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}
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return nil
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}
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func (s *composeService) getContainerStreams(ctx context.Context, container moby.Container) (io.WriteCloser, io.ReadCloser, error) {
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var stdout io.ReadCloser
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var stdin io.WriteCloser
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if container.State == convert.ContainerRunning {
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logs, err := s.apiClient.ContainerLogs(ctx, container.ID, moby.ContainerLogsOptions{
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ShowStdout: true,
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ShowStderr: true,
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Follow: true,
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})
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if err != nil {
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return nil, nil, err
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}
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stdout = logs
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} else {
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cnx, err := s.apiClient.ContainerAttach(ctx, container.ID, moby.ContainerAttachOptions{
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Stream: true,
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Stdin: true,
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Stdout: true,
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Stderr: true,
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Logs: false,
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})
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if err != nil {
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return nil, nil, err
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}
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stdout = convert.ContainerStdout{HijackedResponse: cnx}
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stdin = convert.ContainerStdin{HijackedResponse: cnx}
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}
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return stdin, stdout, nil
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}
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