Add events

pkg/event/event.go

@@ -0,0 +1,71 @@
+package event
+
+import (
+	"fmt"
+
+	"github.com/VirtusLab/jenkins-operator/pkg/controller/jenkins/constants"
+
+	"github.com/golang/glog"
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/kubernetes/scheme"
+	typedcorev1 "k8s.io/client-go/kubernetes/typed/core/v1"
+	"k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/record"
+)
+
+const (
+	// Information only and will not cause any problems
+	TypeNormal = Type("Normal")
+	// These events are to warn that something might go wrong
+	TypeWarning = Type("Warning")
+)
+
+type Type string
+type Reason string
+
+type Recorder interface {
+	Emit(object runtime.Object, eventType Type, reason Reason, message string)
+	Emitf(object runtime.Object, eventType Type, reason Reason, format string, args ...interface{})
+}
+
+type recorder struct {
+	recorder record.EventRecorder
+}
+
+func New(config *rest.Config) (Recorder, error) {
+	eventRecorder, err := initializeEventRecorder(config)
+	if err != nil {
+		return nil, err
+	}
+
+	return &recorder{
+		recorder: eventRecorder,
+	}, nil
+}
+
+func initializeEventRecorder(config *rest.Config) (record.EventRecorder, error) {
+	client, err := kubernetes.NewForConfig(config)
+	if err != nil {
+		return nil, err
+	}
+	eventBroadcaster := record.NewBroadcaster()
+	eventBroadcaster.StartLogging(glog.Infof)
+	eventBroadcaster.StartRecordingToSink(
+		&typedcorev1.EventSinkImpl{
+			Interface: client.CoreV1().Events("")})
+	eventRecorder := eventBroadcaster.NewRecorder(
+		scheme.Scheme,
+		v1.EventSource{
+			Component: constants.OperatorName})
+	return eventRecorder, nil
+}
+
+func (r recorder) Emit(object runtime.Object, eventType Type, reason Reason, message string) {
+	r.recorder.Event(object, string(eventType), string(reason), message)
+}
+
+func (r recorder) Emitf(object runtime.Object, eventType Type, reason Reason, format string, args ...interface{}) {
+	r.recorder.Event(object, string(eventType), string(reason), fmt.Sprintf(format, args...))
+}