forked from cloudfoundry/dropsonde
/
event_formatter.go
48 lines (41 loc) · 1.43 KB
/
event_formatter.go
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package emitter
import (
"errors"
"time"
"github.com/cloudfoundry/sonde-go/events"
"github.com/gogo/protobuf/proto"
)
var ErrorMissingOrigin = errors.New("Event not emitted due to missing origin information")
var ErrorUnknownEventType = errors.New("Cannot create envelope for unknown event type")
func Wrap(event events.Event, origin string) (*events.Envelope, error) {
if origin == "" {
return nil, ErrorMissingOrigin
}
envelope := &events.Envelope{Origin: proto.String(origin), Timestamp: proto.Int64(time.Now().UnixNano())}
switch event := event.(type) {
case *events.HttpStart:
envelope.EventType = events.Envelope_HttpStart.Enum()
envelope.HttpStart = event
case *events.HttpStop:
envelope.EventType = events.Envelope_HttpStop.Enum()
envelope.HttpStop = event
case *events.HttpStartStop:
envelope.EventType = events.Envelope_HttpStartStop.Enum()
envelope.HttpStartStop = event
case *events.ValueMetric:
envelope.EventType = events.Envelope_ValueMetric.Enum()
envelope.ValueMetric = event
case *events.CounterEvent:
envelope.EventType = events.Envelope_CounterEvent.Enum()
envelope.CounterEvent = event
case *events.LogMessage:
envelope.EventType = events.Envelope_LogMessage.Enum()
envelope.LogMessage = event
case *events.ContainerMetric:
envelope.EventType = events.Envelope_ContainerMetric.Enum()
envelope.ContainerMetric = event
default:
return nil, ErrorUnknownEventType
}
return envelope, nil
}