func (instance *Instance) publishLineAs(pub *zmqpubsub.Publisher, source string, logname string, line *tail.Line) {
if line == nil {
panic("line is nil")
}
msg := &message.Message{
LogFilename: logname,
Source: source,
InstanceIndex: instance.Index,
AppGUID: instance.AppGUID,
AppName: instance.AppName,
AppSpace: instance.AppSpace,
MessageCommon: common.NewMessageCommon(line.Text, line.Time, util.LocalNodeId()),
}
if line.Err != nil {
// Mark this as a special error record, as it is
// coming from tail, not the app.
msg.Source = fmt.Sprintf("%v[apptail]", util.GetBrandName())
msg.LogFilename = ""
log.Warnf("[%s] %s", instance.AppName, line.Text)
}
err := msg.Publish(pub, false)
if err != nil {
common.Fatal("Unable to publish: %v", err)
}
}
// Make relevant cloud events available in application logs. Heroku style.
func MonitorCloudEvents() {
sub := logyard.Broker.Subscribe("event.timeline")
defer sub.Stop()
pub := logyard.Broker.NewPublisherMust()
defer pub.Stop()
log.Info("Listening for app relevant cloud events...")
for msg := range sub.Ch {
var event sieve.Event
err := json.Unmarshal([]byte(msg.Value), &event)
if err != nil {
common.Fatal("%v", err) // not expected at all
}
// Re-parse the event json record into a TimelineEvent structure.
var t TimelineEvent
if data, err := json.Marshal(event.Info); err != nil {
common.Fatal("%v", err)
} else {
err = json.Unmarshal(data, &t)
if err != nil {
common.Fatal("Invalid timeline event: %v", err)
}
}
var source string
brandname := util.GetBrandName()
if t.InstanceIndex > -1 {
source = fmt.Sprintf("%v[%v.%v]", brandname, event.Process, t.InstanceIndex)
} else {
source = fmt.Sprintf("%v[%v]", brandname, event.Process)
}
PublishAppLog(pub, t, source, &event)
}
log.Warn("Finished listening for app relevant cloud events.")
err := sub.Wait()
if err != nil {
common.Fatal("%v", err)
}
}