109 lines
2.6 KiB
Go
109 lines
2.6 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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"bytes"
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"context"
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"io"
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"github.com/docker/compose-cli/api/compose"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/api/types/filters"
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"github.com/docker/docker/pkg/stdcopy"
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"golang.org/x/sync/errgroup"
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)
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func (s *composeService) Logs(ctx context.Context, projectName string, consumer compose.LogConsumer, options compose.LogOptions) error {
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list, err := s.apiClient.ContainerList(ctx, types.ContainerListOptions{
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Filters: filters.NewArgs(
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projectFilter(projectName),
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),
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})
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ignore := func(string) bool {
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return false
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}
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if len(options.Services) > 0 {
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ignore = func(s string) bool {
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return !contains(options.Services, s)
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}
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}
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if err != nil {
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return err
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}
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eg, ctx := errgroup.WithContext(ctx)
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for _, c := range list {
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service := c.Labels[serviceLabel]
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if ignore(service) {
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continue
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}
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container, err := s.apiClient.ContainerInspect(ctx, c.ID)
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if err != nil {
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return err
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}
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eg.Go(func() error {
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r, err := s.apiClient.ContainerLogs(ctx, container.ID, types.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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defer r.Close() // nolint errcheck
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if err != nil {
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return err
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}
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w := getWriter(service, container.ID, consumer)
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if container.Config.Tty {
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_, err = io.Copy(w, r)
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} else {
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_, err = stdcopy.StdCopy(w, w, r)
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}
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return err
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})
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}
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return eg.Wait()
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}
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type splitBuffer struct {
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service string
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container string
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consumer compose.LogConsumer
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}
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// getWriter creates a io.Writer that will actually split by line and format by LogConsumer
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func getWriter(service, container string, l compose.LogConsumer) io.Writer {
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return splitBuffer{
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service: service,
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container: container,
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consumer: l,
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}
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}
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func (s splitBuffer) Write(b []byte) (n int, err error) {
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split := bytes.Split(b, []byte{'\n'})
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for _, line := range split {
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if len(line) != 0 {
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s.consumer.Log(s.service, s.container, string(line))
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}
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}
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return len(b), nil
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}
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