Method Logs

pkg/ddevapp/ddevapp.go:2671–2719

Logs returns logs for a site's given container. See docker.LogsOptions for more information about valid tailLines values.

(service string, follow bool, timestamps bool, tailLines string)

// Logs returns logs for a site's given container.
// See docker.LogsOptions for more information about valid tailLines values.
func (app *DdevApp) Logs(service string, follow bool, timestamps bool, tailLines string) error {
	ctx, apiClient, err := dockerutil.GetDockerClient()
	if err != nil {
		return err
	}

	var c *container.Summary
	// Let people access ddev-router and ddev-ssh-agent logs as well.
	if service == "ddev-router" || service == "ddev-ssh-agent" {
		c, err = dockerutil.FindContainerByLabels(map[string]string{
			"com.docker.compose.service": service,
			"com.docker.compose.oneoff":  "False",
		})
	} else {
		c, err = app.FindContainerByType(service)
	}
	if err != nil {
		return err
	}
	if c == nil {
		util.Warning("No running service container %s was found", service)
		return nil
	}

	logOpts := client.ContainerLogsOptions{
		ShowStdout: true,
		ShowStderr: true,
		Follow:     follow,
		Timestamps: timestamps,
	}

	if tailLines != "" {
		logOpts.Tail = tailLines
	}

	rc, err := apiClient.ContainerLogs(ctx, c.ID, logOpts)
	if err != nil {
		return err
	}
	defer rc.Close()

	// Copy logs to user output
	_, err = stdcopy.StdCopy(output.UserOut.Out, output.UserOut.Out, rc)
	if err != nil {
		return fmt.Errorf("failed to copy container logs: %v", err)
	}

	return nil
}

// CaptureLogs returns logs for a site's given container.
// See docker.LogsOptions for more information about valid tailLines values.