Fix lint and race condition in test.

event-handler/teleport_event.go

@@ -20,9 +20,10 @@ import (
 	"encoding/json"
 	"time"
 
+	"github.com/gravitational/trace"
+
 	auditlogpb "github.com/gravitational/teleport/api/gen/proto/go/teleport/auditlog/v1"
 	"github.com/gravitational/teleport/api/types/events"
-	"github.com/gravitational/trace"
 )
 
 const (

event-handler/teleport_events_watcher_test.go

@@ -18,6 +18,7 @@ package main
 
 import (
 	"strconv"
+	"sync"
 	"testing"
 	"time"
 
@@ -33,13 +34,31 @@ import (
 
 // mockTeleportEventWatcher is Teleport client mock
 type mockTeleportEventWatcher struct {
+	mu sync.Mutex
 	// events is the mock list of events
 	events []events.AuditEvent
 	// mockSearchErr is an error to return
 	mockSearchErr error
 }
 
+func (c *mockTeleportEventWatcher) setEvents(events []events.AuditEvent) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	c.events = events
+}
+
+func (c *mockTeleportEventWatcher) setSearchEventsError(err error) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	c.mockSearchErr = err
+}
+
 func (c *mockTeleportEventWatcher) SearchEvents(ctx context.Context, fromUTC, toUTC time.Time, namespace string, eventTypes []string, limit int, order types.EventOrder, startKey string) ([]events.AuditEvent, string, error) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
 	if c.mockSearchErr != nil {
 		return nil, "", c.mockSearchErr
 	}
@@ -173,7 +192,7 @@ func TestEvents(t *testing.T) {
 
 	// Events goroutine should return next page errors
 	mockErr := trace.Errorf("error")
-	mockEventWatcher.mockSearchErr = mockErr
+	mockEventWatcher.setSearchEventsError(mockErr)
 
 	select {
 	case err := <-chErr:
@@ -221,7 +240,7 @@ func TestUpdatePage(t *testing.T) {
 	chEvt, chErr := client.Events(ctx)
 
 	// Add an incomplete page of 3 events and collect them.
-	mockEventWatcher.events = testAuditEvents[:3]
+	mockEventWatcher.setEvents(testAuditEvents[:3])
 	var i int
 	for ; i < 3; i++ {
 		select {
@@ -249,7 +268,7 @@ func TestUpdatePage(t *testing.T) {
 	}
 
 	// Update the event watcher with the full page of events an collect.
-	mockEventWatcher.events = testAuditEvents[:5]
+	mockEventWatcher.setEvents(testAuditEvents[:5])
 	for ; i < 5; i++ {
 		select {
 		case event, ok := <-chEvt:
@@ -276,7 +295,7 @@ func TestUpdatePage(t *testing.T) {
 	}
 
 	// Add another partial page and collect the events
-	mockEventWatcher.events = testAuditEvents[:7]
+	mockEventWatcher.setEvents(testAuditEvents[:7])
 	for ; i < 7; i++ {
 		select {
 		case event, ok := <-chEvt:
@@ -295,7 +314,7 @@ func TestUpdatePage(t *testing.T) {
 
 	// Events goroutine should return update page errors
 	mockErr := trace.Errorf("error")
-	mockEventWatcher.mockSearchErr = mockErr
+	mockEventWatcher.setSearchEventsError(mockErr)
 
 	select {
 	case err := <-chErr: