/
event_emitter.go
66 lines (53 loc) · 1.61 KB
/
event_emitter.go
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package util
import (
"reflect"
csvv1alpha1 "github.com/operator-framework/api/pkg/operators/v1alpha1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/tools/record"
)
var (
evntEmtr EventEmitter = &eventEmitter{}
)
func GetEventEmitter() EventEmitter {
return evntEmtr
}
type EventEmitter interface {
Init(pod *corev1.Pod, csv *csvv1alpha1.ClusterServiceVersion, recorder record.EventRecorder)
EmitEvent(object runtime.Object, eventType, reason, msg string)
}
type eventEmitter struct {
recorder record.EventRecorder
pod *corev1.Pod
csv *csvv1alpha1.ClusterServiceVersion
}
func (ee *eventEmitter) Init(pod *corev1.Pod, csv *csvv1alpha1.ClusterServiceVersion, recorder record.EventRecorder) {
ee.recorder = recorder //mgr.GetEventRecorderFor(HyperConvergedName)
ee.pod = pod
ee.csv = csv
}
func (ee eventEmitter) EmitEvent(object runtime.Object, eventType, reason, msg string) {
if ee.pod != nil {
ee.recorder.Event(ee.pod, eventType, reason, msg)
}
if !IsActuallyNil(object) {
ee.recorder.Event(object, eventType, reason, msg)
}
if ee.csv != nil {
ee.recorder.Event(ee.csv, eventType, reason, msg)
}
}
// IsActuallyNil checks if an interface object is actually nil. Just checking for == nil won't work, if the parameter is
// a pointer variable that holds nil.
func IsActuallyNil(object interface{}) bool {
if object == nil {
return true
}
t := reflect.ValueOf(object)
switch t.Kind() {
case reflect.Chan, reflect.Func, reflect.Map, reflect.Pointer, reflect.UnsafePointer, reflect.Interface, reflect.Slice:
return t.IsNil()
default:
return false
}
}