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How to use SendEvent method of slacknotifier Package

Best Testkube code snippet using slacknotifier.SendEvent

watcher_service.go

Source:watcher_service.go

1package monitoring2import (3	"fmt"4	"io/ioutil"5	"sync"6	"github.com/pkg/errors"7	"github.com/sirupsen/logrus"8	"k8s.io/api/core/v1"9	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"10	"k8s.io/apimachinery/pkg/watch"11	corev1 "k8s.io/client-go/kubernetes/typed/core/v1"12)13const (14	tailLines      = 200015	logsLimitBytes = 1048576 // 1MB16)17// SlackNotifier allows sending notification about messages to Slack channel.18type SlackNotifier interface {19	Notify(id, header, details string) error20}21// WatcherService allows to watch events for a given Pod and send notification to Slack if received event Type is different that `Normal`22type WatcherService struct {23	coreCli       corev1.CoreV1Interface24	slackNotifier SlackNotifier25	log           logrus.FieldLogger26	watchedObj map[string]*watchObj27	mux        *sync.RWMutex28}29type watchObj struct {30	watcher watch.Interface31	// TODO: We used as a value the empty struct which in Go empty struct has a width of zero ( It occupies zero bytes of storage).32	// This map will be released by the GC when we will stop watching given Pod.33	// We expect that there will not be too many different events sent to Pod, so we should not have a problem with allocated memory.34	sendEvent map[string]struct{}35}36// NewWatcherService returns new instance of the WatcherService37func NewWatcherService(eventCli corev1.CoreV1Interface, slackNotifier SlackNotifier, log logrus.FieldLogger) *WatcherService {38	return &WatcherService{39		coreCli:       eventCli,40		slackNotifier: slackNotifier,41		log:           log.WithField("service", "monitoring:event-watcher"),42		mux:        &sync.RWMutex{},43		watchedObj: make(map[string]*watchObj),44	}45}46// Register registers given obj and starts watching events from it.47// Error is not returned when object with the same Name is already registered.48func (s *WatcherService) Register(ref *v1.ObjectReference) error {49	s.mux.Lock()50	defer s.mux.Unlock()51	key := s.refKey(ref)52	if _, found := s.watchedObj[key]; found {53		return nil54	}55	nsEventCli := s.coreCli.Events(ref.Namespace)56	selector := nsEventCli.GetFieldSelector(s.selectorArgsFromRefObj(ref))57	eventWatcher, err := nsEventCli.Watch(metav1.ListOptions{58		FieldSelector: selector.String(),59	})60	if err != nil {61		return errors.Wrapf(err, "while creating watch Event interface for object %q", key)62	}63	s.watchedObj[key] = &watchObj{64		watcher:   eventWatcher,65		sendEvent: make(map[string]struct{}),66	}67	go s.startWatching(ref, eventWatcher.ResultChan())68	return nil69}70func (*WatcherService) refKey(ref *v1.ObjectReference) string {71	return fmt.Sprintf("%s/%s", ref.Namespace, ref.Name)72}73func (s *WatcherService) startWatching(ref *v1.ObjectReference, events <-chan watch.Event) {74	// We will also get the restart events here, so we are not checking the status of the pod directly75	for r := range events {76		event := r.Object.(*v1.Event)77		if event.Type != v1.EventTypeNormal {78			id := s.eventKey(event)79			failLogger := s.log.WithField("ID", id)80			obj := s.watchedObj[s.refKey(ref)]81			if _, found := obj.sendEvent[id]; found {82				continue83			}84			eventMsg := fmt.Sprintf("Event type: %s, reason: %s, message: %s", event.Type, event.Reason, event.Message)85			dumpedLogs, err := s.podLogs(ref)86			if err != nil {87				failLogger.Errorf("Got error while getting log from pod: %v", err)88			}89			failureReasonHeader := fmt.Sprintf("*[Phase: MONITORING]* _Discover that Pod %s has problems_", ref.Name)90			err = s.slackNotifier.Notify(id, failureReasonHeader, eventMsg)91			if err != nil {92				failLogger.Errorf("Got error while sending notification to Slack: %v", err)93				continue94			} else {95				obj.sendEvent[id] = struct{}{}96			}97			failLogger.Infof(eventMsg)98			failLogger.Infof("Logs from Pod %s/%s: %s", ref.Namespace, ref.Name, dumpedLogs)99		}100	}101}102func (s *WatcherService) eventKey(event *v1.Event) string {103	return fmt.Sprintf("%s/%s", event.Namespace, event.Name)104}105func (s *WatcherService) podLogs(ref *v1.ObjectReference) (string, error) {106	req := s.coreCli.Pods(ref.Namespace).GetLogs(ref.Name, &v1.PodLogOptions{107		TailLines:  s.int64Ptr(tailLines),108		LimitBytes: s.int64Ptr(logsLimitBytes),109	})110	readCloser, err := req.Stream()111	if err != nil {112		return "", errors.Wrap(err, "while getting log stream")113	}114	defer readCloser.Close()115	logs, err := ioutil.ReadAll(readCloser)116	if err != nil {117		return "", errors.Wrapf(err, "while reading logs from pod %s", ref.Name)118	}119	return string(logs), nil120}121// Unregister removes obj from watcher list and stop watching the events from it.122// Error is not returned when object was not registered.123func (s *WatcherService) Unregister(ref *v1.ObjectReference) error {124	s.mux.Lock()125	defer s.mux.Unlock()126	key := s.refKey(ref)127	obj, found := s.watchedObj[key]128	if !found {129		return nil130	}131	obj.watcher.Stop()132	delete(s.watchedObj, key)133	return nil134}135func (s *WatcherService) selectorArgsFromRefObj(ref *v1.ObjectReference) (*string, *string, *string, *string) {136	return s.strPtr(ref.Name), s.strPtr(ref.Namespace), s.strPtr(ref.Kind), s.strPtr(string(ref.UID))137}138func (*WatcherService) strPtr(s string) *string {139	return &s140}141func (*WatcherService) int64Ptr(i int64) *int64 {142	return &i143}...

slack.go

Source:slack.go

...17		channel: channel,18		client:  slack.New(token),19	}20}21// SendEvent sends event notification to slack22func (s *SlackNotifier) SendEvent(ctx context.Context, event Event) error {23	s.log.Debug("Sending message to slack")24	targetChannel := event.Channel25	if targetChannel == "" {26		targetChannel = s.channel27	}28	var err error29	if event.IsAttachment {30		err = s.sendAttachmentMessage(ctx, event, targetChannel)31	} else {32		err = s.sendMessage(ctx, event, targetChannel)33	}34	return err35}36func (s *SlackNotifier) sendAttachmentMessage(ctx context.Context, event Event, targetChannel string) error {...

listener.go

Source:listener.go

...37		"events": fmt.Sprintf("%v", l.Events()),38	}39}40func (l *SlackListener) Notify(event testkube.Event) (result testkube.EventResult) {41	err := slacknotifier.SendEvent(event)42	if err != nil {43		return testkube.NewFailedEventResult(event.Id, err)44	}45	return testkube.NewSuccessEventResult(event.Id, "event sent to slack")46}47func (l *SlackListener) Kind() string {48	return "slack"49}...

SendEvent

Using AI Code Generation

1import (2func main() {3	message := slack.NewMessage("Hello")4	err := notifier.Send(message)5	if err != nil {6		fmt.Println(err)7	}8}9{ok true}10import (11func main() {12	message := slack.NewMessage("Hello")13	attachment := slack.Attachment{}14	attachment.AddField(slack.Field{Title: "Title", Value: "Value"})15	message.AddAttachment(attachment)16	err := notifier.Send(message)17	if err != nil {18		fmt.Println(err)19	}20}21{ok true}22import (23func main() {

SendEvent

Using AI Code Generation

1import (2func main() {3	slacknotifier.SendEvent("Hello World")4	fmt.Println("Done")5}6import (7type slackPayload struct {8}9func SendEvent(message string) {10	slackPayload := &slackPayload{Text: message}11	slackPayloadJSON, err := json.Marshal(slackPayload)12	if err != nil {13		fmt.Println(err)14	}15	if err != nil {16		fmt.Println(err)17	}18	req.Header.Set("Content-Type", "application/json")19	client := &http.Client{}20	resp, err := client.Do(req)21	if err != nil {22		fmt.Println(err)23	}24	defer resp.Body.Close()25}26require (27import (28func main() {29	slacknotifier.SendEvent("Hello World")30	fmt.Println("Done")31}32import (33func TestSendEvent(t *testing.T) {34	SendEvent("Hello World")35}

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