Function newLogsCommand

cli/command/container/logs.go:27–54

newLogsCommand creates a new cobra.Command for "docker container logs"

(dockerCLI command.Cli)

// newLogsCommand creates a new cobra.Command for "docker container logs"
func newLogsCommand(dockerCLI command.Cli) *cobra.Command {
	var opts logsOptions

	cmd := &cobra.Command{
		Use:   "logs [OPTIONS] CONTAINER",
		Short: "Fetch the logs of a container",
		Args:  cli.ExactArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			opts.container = args[0]
			return runLogs(cmd.Context(), dockerCLI, &opts)
		},
		Annotations: map[string]string{
			"aliases": "docker container logs, docker logs",
		},
		ValidArgsFunction:     completion.ContainerNames(dockerCLI, true),
		DisableFlagsInUseLine: true,
	}

	flags := cmd.Flags()
	flags.BoolVarP(&opts.follow, "follow", "f", false, "Follow log output")
	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.SetAnnotation("until", "version", []string{"1.35"})
	flags.BoolVarP(&opts.timestamps, "timestamps", "t", false, "Show timestamps")
	flags.BoolVar(&opts.details, "details", false, "Show extra details provided to logs")
	flags.StringVarP(&opts.tail, "tail", "n", "all", "Number of lines to show from the end of the logs")
	return cmd
}

func runLogs(ctx context.Context, dockerCli command.Cli, opts *logsOptions) error {
	c, err := dockerCli.Client().ContainerInspect(ctx, opts.container, client.ContainerInspectOptions{})