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https://github.com/moby/moby.git
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3a8728b431
- noplog driver pkg for '--log-driver=none' (null object pattern) - centralized factory for log drivers (instead of case/switch) - logging drivers registers themselves to factory upon import (easy plug/unplug of drivers in daemon/logdrivers.go) - daemon now doesn't start with an invalid log driver - Name() method of loggers is actually now their cli names (made it useful) - generalized Read() logic, made it unsupported except json-file (preserves existing behavior) Spotted some duplication code around processing of legacy json-file format, didn't touch that and refactored in both places. Signed-off-by: Ahmet Alp Balkan <ahmetalpbalkan@gmail.com>
58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
package journald
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import (
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"fmt"
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"io"
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"github.com/Sirupsen/logrus"
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"github.com/coreos/go-systemd/journal"
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"github.com/docker/docker/daemon/logger"
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)
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const name = "journald"
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type Journald struct {
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Jmap map[string]string
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}
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func init() {
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if err := logger.RegisterLogDriver(name, New); err != nil {
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logrus.Fatal(err)
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}
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}
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func New(ctx logger.Context) (logger.Logger, error) {
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if !journal.Enabled() {
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return nil, fmt.Errorf("journald is not enabled on this host")
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}
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// Strip a leading slash so that people can search for
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// CONTAINER_NAME=foo rather than CONTAINER_NAME=/foo.
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name := ctx.ContainerName
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if name[0] == '/' {
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name = name[1:]
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}
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jmap := map[string]string{
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"CONTAINER_ID": ctx.ContainerID[:12],
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"CONTAINER_ID_FULL": ctx.ContainerID,
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"CONTAINER_NAME": name}
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return &Journald{Jmap: jmap}, nil
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}
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func (s *Journald) Log(msg *logger.Message) error {
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if msg.Source == "stderr" {
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return journal.Send(string(msg.Line), journal.PriErr, s.Jmap)
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}
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return journal.Send(string(msg.Line), journal.PriInfo, s.Jmap)
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}
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func (s *Journald) Close() error {
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return nil
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}
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func (s *Journald) Name() string {
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return name
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}
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func (s *Journald) GetReader() (io.Reader, error) {
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return nil, logger.ReadLogsNotSupported
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}
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