added logentries driver

Signed-off-by: Carlos Alexandro Becker <caarlos0@gmail.com>

daemon/logdrivers_linux.go

@@ -9,6 +9,7 @@ import (
 	_ "github.com/docker/docker/daemon/logger/gelf"
 	_ "github.com/docker/docker/daemon/logger/journald"
 	_ "github.com/docker/docker/daemon/logger/jsonfilelog"
+	_ "github.com/docker/docker/daemon/logger/logentries"
 	_ "github.com/docker/docker/daemon/logger/splunk"
 	_ "github.com/docker/docker/daemon/logger/syslog"
 )

daemon/logdrivers_windows.go

@@ -6,6 +6,7 @@ import (
 	_ "github.com/docker/docker/daemon/logger/awslogs"
 	_ "github.com/docker/docker/daemon/logger/etwlogs"
 	_ "github.com/docker/docker/daemon/logger/jsonfilelog"
+	_ "github.com/docker/docker/daemon/logger/logentries"
 	_ "github.com/docker/docker/daemon/logger/splunk"
 	_ "github.com/docker/docker/daemon/logger/syslog"
 )

daemon/logger/logentries/logentries.go

@@ -0,0 +1,94 @@
+// Package logentries provides the log driver for forwarding server logs
+// to logentries endpoints.
+package logentries
+
+import (
+	"fmt"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/bsphere/le_go"
+	"github.com/docker/docker/daemon/logger"
+)
+
+type logentries struct {
+	tag           string
+	containerID   string
+	containerName string
+	writer        *le_go.Logger
+	extra         map[string]string
+}
+
+const (
+	name  = "logentries"
+	token = "logentries-token"
+)
+
+func init() {
+	if err := logger.RegisterLogDriver(name, New); err != nil {
+		logrus.Fatal(err)
+	}
+	if err := logger.RegisterLogOptValidator(name, ValidateLogOpt); err != nil {
+		logrus.Fatal(err)
+	}
+}
+
+// New creates a logentries logger using the configuration passed in on
+// the context. The supported context configuration variable is
+// logentries-token.
+func New(ctx logger.Context) (logger.Logger, error) {
+	logrus.WithField("container", ctx.ContainerID).
+		WithField("token", ctx.Config[token]).
+		Debug("logging driver logentries configured")
+
+	log, err := le_go.Connect(ctx.Config[token])
+	if err != nil {
+		return nil, err
+	}
+	return &logentries{
+		containerID:   ctx.ContainerID,
+		containerName: ctx.ContainerName,
+		writer:        log,
+	}, nil
+}
+
+func (f *logentries) Log(msg *logger.Message) error {
+	data := map[string]string{
+		"container_id":   f.containerID,
+		"container_name": f.containerName,
+		"source":         msg.Source,
+		"log":            string(msg.Line),
+	}
+	for k, v := range f.extra {
+		data[k] = v
+	}
+	f.writer.Println(f.tag, msg.Timestamp, data)
+	return nil
+}
+
+func (f *logentries) Close() error {
+	return f.writer.Close()
+}
+
+func (f *logentries) Name() string {
+	return name
+}
+
+// ValidateLogOpt looks for logentries specific log option logentries-address.
+func ValidateLogOpt(cfg map[string]string) error {
+	for key := range cfg {
+		switch key {
+		case "env":
+		case "labels":
+		case "tag":
+		case key:
+		default:
+			return fmt.Errorf("unknown log opt '%s' for logentries log driver", key)
+		}
+	}
+
+	if cfg[token] == "" {
+		return fmt.Errorf("Missing logentries token")
+	}
+
+	return nil
+}

docs/admin/logging/logentries.md

@@ -0,0 +1,42 @@
+<!--[metadata]>
++++
+aliases = ["/engine/reference/logging/logentries/"]
+title = "Logentries logging driver"
+description = "Describes how to use the Logentries logging driver."
+keywords = ["logentries, docker, logging, driver"]
+[menu.main]
+parent = "smn_logging"
+weight = 2
++++
+<![end-metadata]-->
+
+# Logentries logging driver
+
+The `logentries` logging driver sends container logs to the Logentries server.
+
+## Usage
+
+You can configure the default logging driver by passing the `--log-driver`
+option to the Docker daemon:
+
+    docker daemon --log-driver=logentries
+
+You can set the logging driver for a specific container by using the
+`--log-driver` option to `docker run`:
+
+    docker run --log-driver=logentries ...
+
+## Logentries options
+
+You can use the `--log-opt NAME=VALUE` flag to specify these additional
+Logentries logging driver options:
+
+| Option                      | Required | Description                                                                                                                                                                                                        |
+|-----------------------------|----------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `logentries-token`              | required | Logentries token.                                                                                                                                                                                 |
+
+An example usage would be somethig like:
+
+    docker run --log-driver=logentries \
+        --log-opt logentries-token=176FCEBF-4CF5-4EDF-91BC-703796522D20 \
+        your/application