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refactor logs and support service logs /w tty 

Refactor container logs system to make communicating log messages
internally much simpler. Move responsibility for marshalling log
messages into the REST server. Support TTY logs. Pave the way for fixing
the ambiguous bytestream format. Pave the way for fixing details.

Signed-off-by: Drew Erny <drew.erny@docker.com>
This commit is contained in:
Drew Erny 2017-03-20 10:07:04 -07:00
parent 9a5513b791
commit 938bf846e3
1 changed files with 22 additions and 0 deletions
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22
command/service/logs.go
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@ -73,6 +73,7 @@ func runLogs(dockerCli *command.DockerCli, opts *logsOptions) error {
Timestamps: opts.timestamps,
Follow: opts.follow,
Tail: opts.tail,
Details: true,
}
cli := dockerCli.Client()
@ -80,6 +81,7 @@ func runLogs(dockerCli *command.DockerCli, opts *logsOptions) error {
var (
maxLength = 1
responseBody io.ReadCloser
tty bool
)
service, _, err := cli.ServiceInspectWithRaw(ctx, opts.target)
@ -89,6 +91,14 @@ func runLogs(dockerCli *command.DockerCli, opts *logsOptions) error {
return err
}
task, _, err := cli.TaskInspectWithRaw(ctx, opts.target)
tty = task.Spec.ContainerSpec.TTY
// TODO(dperny) hot fix until we get a nice details system squared away,
// ignores details (including task context) if we have a TTY log
if tty {
options.Details = false
}
responseBody, err = cli.TaskLogs(ctx, opts.target, options)
if err != nil {
if client.IsErrTaskNotFound(err) {
// if the task ALSO isn't found, rewrite the error to be clear
@ -100,6 +110,13 @@ func runLogs(dockerCli *command.DockerCli, opts *logsOptions) error {
maxLength = getMaxLength(task.Slot)
responseBody, err = cli.TaskLogs(ctx, opts.target, options)
} else {
tty = service.Spec.TaskTemplate.ContainerSpec.TTY
// TODO(dperny) hot fix until we get a nice details system squared away,
// ignores details (including task context) if we have a TTY log
if tty {
options.Details = false
}
responseBody, err = cli.ServiceLogs(ctx, opts.target, options)
if err != nil {
return err
@ -112,6 +129,11 @@ func runLogs(dockerCli *command.DockerCli, opts *logsOptions) error {
}
defer responseBody.Close()
if tty {
_, err = io.Copy(dockerCli.Out(), responseBody)
return err
}
taskFormatter := newTaskFormatter(cli, opts, maxLength)
stdout := &logWriter{ctx: ctx, opts: opts, f: taskFormatter, w: dockerCli.Out()}