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kafka_integration_multiple_subscribers_ack_test.go
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kafka_integration_multiple_subscribers_ack_test.go
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/*
* Copyright (c) 2020 AccelByte Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and limitations under the License.
*
*/
package eventstream
import (
"context"
"fmt"
"sync"
"testing"
"time"
"github.com/confluentinc/confluent-kafka-go/v2/kafka"
"github.com/sirupsen/logrus"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// nolint:funlen
func TestMultipleSubscriptionsEventuallyProcessAllEvents(t *testing.T) {
testTimeoutDuration := time.Duration(timeoutTest) * time.Second * 4 //nolint:gomnd
ctx, done := context.WithTimeout(context.Background(), testTimeoutDuration)
defer done()
doneChan := make(chan bool, 100) // nolint:gomnd
client := createKafkaClient(t)
topicName := constructTopicTest()
var mockPayload = make(map[string]interface{})
mockPayload[testPayload] = "testPayload" // nolint:goconst
mockAdditionalFields := map[string]interface{}{
"summary": "user:_failed",
}
eventName := "TestMultipleSubscriptionsEventuallyProcessAllEvents"
mockEvent := Event{
EventName: eventName,
Namespace: "event",
ClientID: "7d480ce0e8624b02901bd80d9ba9817c",
TraceID: "01c34ec3b07f4bfaa59ba0184a3de14d",
SpanContext: "test-span-context",
UserID: "e95b150043ff4a2c88427a6eb25e5bc8",
EventID: 0, // nolint:gomnd
EventType: 301, // nolint:gomnd
EventLevel: 3, //nolint:gomnd
ServiceName: "test",
ClientIDs: []string{"7d480ce0e8624b02901bd80d9ba9817c"},
TargetUserIDs: []string{"1fe7f425a0e049d29d87ca3d32e45b5a"},
TargetNamespace: "publisher",
Privacy: true,
AdditionalFields: mockAdditionalFields,
Version: defaultVersion,
Payload: mockPayload,
}
// init event counters
processedEvents := make(map[int]int64) // map[event-id]count. used to count all processed events
var processedEventsMutex sync.Mutex
groupID := generateID()
// create few workers
for i := 0; i < 4; i++ {
func(i int) {
workerID := i
workerEventCounter := 0
err := client.Register(
NewSubscribe().
Topic(topicName).
EventName(mockEvent.EventName).
GroupID(groupID).
Context(ctx).
Offset(int64(kafka.OffsetBeginning)).
Callback(func(ctx context.Context, event *Event, err error) error {
if ctx.Err() != nil {
return ctx.Err()
}
if err != nil {
return err
}
// nothing to process
if event == nil {
return nil
}
workerEventCounter++
processedEventsMutex.Lock()
defer processedEventsMutex.Unlock()
if workerEventCounter%25 == 0 { // fail processing each 25-th event
logrus.Infof("worker: %v, EventID %v failed (%d)", workerID, event.EventID, workerEventCounter)
return fmt.Errorf("worker: %v, Event %v failed", workerID, event.EventID)
}
processedEvents[event.EventID]++
go func() {
doneChan <- true
}()
return nil
}))
require.NoError(t, err)
}(i)
}
numberOfProducer := 2
numberOfEventsPerProducer := 100
numberOfEvents := numberOfProducer * numberOfEventsPerProducer
// publish few thousand of events
for i := 0; i < numberOfProducer; i++ {
go func(producer int) {
for j := 0; j < numberOfEventsPerProducer; j++ {
eventToSend := mockEvent
eventToSend.EventID = producer*numberOfEventsPerProducer + j
err := client.Publish(
NewPublish().
Topic(topicName).
EventName(eventToSend.EventName).
Namespace(eventToSend.Namespace).
ClientID(eventToSend.ClientID).
UserID(eventToSend.UserID).
SessionID(eventToSend.SessionID).
TraceID(eventToSend.TraceID).
SpanContext(eventToSend.SpanContext).
EventID(eventToSend.EventID).
EventType(eventToSend.EventType).
EventLevel(eventToSend.EventLevel).
ServiceName(eventToSend.ServiceName).
ClientIDs(eventToSend.ClientIDs).
TargetUserIDs(eventToSend.TargetUserIDs).
TargetNamespace(eventToSend.TargetNamespace).
Privacy(eventToSend.Privacy).
AdditionalFields(eventToSend.AdditionalFields).
Context(context.Background()).
Payload(mockPayload))
require.NoError(t, err)
}
}(i)
}
for {
select {
case <-doneChan:
processedEventsMutex.Lock()
// check that all events processed
if len(processedEvents) == numberOfEvents {
return
}
logrus.Printf("Total processed %v", len(processedEvents))
processedEventsMutex.Unlock()
case <-ctx.Done():
assert.FailNow(t, errorTimeout)
}
}
}