/
main.go
95 lines (88 loc) · 2.01 KB
/
main.go
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package main
import (
"github.com/bsphere/le_go"
"github.com/codegangsta/cli"
"github.com/colebrumley/dockeraction"
"github.com/fsouza/go-dockerclient"
log "github.com/sirupsen/logrus"
"os"
)
var (
leConn *le_go.Logger
dockerClient *dockeraction.ActionClient
)
func main() {
app := cli.NewApp()
app.Version = "v0.1"
app.Name = "leddlogger"
app.Usage = "Logentries Docker daemon logger: Like `docker logs`, but for all containers. To logentries."
app.Flags = []cli.Flag{
cli.StringFlag{
Name: "token",
Usage: "Logentries token",
Value: "XXXX-XXXX-XXXX-XXXX",
EnvVar: "LE_TOKEN",
},
cli.StringSliceFlag{
Name: "ignore",
Usage: "list of images to ignore",
Value: &cli.StringSlice{"weaveworks/weaveexec:1.0.2"},
},
}
app.Action = watchEvents
app.Run(os.Args)
}
func watchEvents(c *cli.Context) {
var err error
dockerClient, err = dockeraction.GetDefaultActionClient()
if err != nil {
log.Fatal(err)
}
token := c.String("token")
eventChan := make(chan *docker.APIEvents)
log.Println("Watching for Docker events")
if err := dockerClient.AddEventListener(eventChan); err != nil {
log.Fatal(err)
}
for event := range eventChan {
if event.Status == "start" {
skip := false
for _, i := range c.StringSlice("ignore") {
if i == event.From {
skip = true
break
}
}
if !skip {
go logContainer(event.ID[:12], token)
log.Printf("Log stream for %s started (%s)", event.ID[:12], event.From)
}
}
}
}
func logContainer(id, token string) {
out := make(chan string)
errChan := make(chan error, 1)
le, err := le_go.Connect(token)
if err != nil {
log.Fatal(err)
}
defer le.Close()
le.SetPrefix("[" + id + "]")
le.Println("Starting log stream")
go dockerClient.StreamLogs(id, out, errChan)
for {
select {
case line := <-out:
le.Println(line)
case err := <-errChan:
if err != nil {
le.Println(err.Error())
log.Error(err)
}
log.Printf("Stopping log stream from %s", id)
le.Println("Stopping log stream")
return
}
}
}