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/*
Copyright 2020 Docker Compose CLI authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package compose
import (
"context"
"errors"
"github.com/docker/cli/cli/command"
"github.com/spf13/cobra"
"github.com/docker/compose/v2/cmd/formatter"
"github.com/docker/compose/v2/pkg/api"
)
type logsOptions struct {
*ProjectOptions
composeOptions
follow bool
index int
tail string
since string
until string
noColor bool
noPrefix bool
timestamps bool
}
func logsCommand(p *ProjectOptions, dockerCli command.Cli, backend api.Service) *cobra.Command {
opts := logsOptions{
ProjectOptions: p,
}
logsCmd := &cobra.Command{
Use: "logs [OPTIONS] [SERVICE...]",
Short: "View output from containers",
RunE: Adapt(func(ctx context.Context, args []string) error {
return runLogs(ctx, dockerCli, backend, opts, args)
}),
PreRunE: func(cmd *cobra.Command, args []string) error {
if opts.index > 0 && len(args) != 1 {
return errors.New("--index requires one service to be selected")
}
return nil
},
ValidArgsFunction: completeServiceNames(dockerCli, p),
}
flags := logsCmd.Flags()
flags.BoolVarP(&opts.follow, "follow", "f", false, "Follow log output")
flags.IntVar(&opts.index, "index", 0, "index of the container if service has multiple replicas")
flags.StringVar(&opts.since, "since", "", "Show logs since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)")
flags.StringVar(&opts.until, "until", "", "Show logs before a timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)")
flags.BoolVar(&opts.noColor, "no-color", false, "Produce monochrome output")
flags.BoolVar(&opts.noPrefix, "no-log-prefix", false, "Don't print prefix in logs")
flags.BoolVarP(&opts.timestamps, "timestamps", "t", false, "Show timestamps")
flags.StringVarP(&opts.tail, "tail", "n", "all", "Number of lines to show from the end of the logs for each container")
return logsCmd
}
func runLogs(ctx context.Context, dockerCli command.Cli, backend api.Service, opts logsOptions, services []string) error {
project, name, err := opts.projectOrName(ctx, dockerCli, services...)
if err != nil {
return err
}
// exclude services configured to ignore output (attach: false), until explicitly selected
if project != nil && len(services) == 0 {
for n, service := range project.Services {
if service.Attach == nil || *service.Attach {
services = append(services, n)
}
}
}
consumer := formatter.NewLogConsumer(ctx, dockerCli.Out(), dockerCli.Err(), !opts.noColor, !opts.noPrefix, false)
return backend.Logs(ctx, name, consumer, api.LogOptions{
Project: project,
Services: services,
Follow: opts.follow,
Index: opts.index,
Tail: opts.tail,
Since: opts.since,
Until: opts.until,
Timestamps: opts.timestamps,
})
}
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