github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/cdc/sink/dmlsink/mq/dmlproducer/kafka_dml_mock_producer.go (about)

     1  // Copyright 2022 PingCAP, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package dmlproducer
    15  
    16  import (
    17  	"context"
    18  	"fmt"
    19  	"sync"
    20  
    21  	"github.com/pingcap/tiflow/cdc/model"
    22  	"github.com/pingcap/tiflow/pkg/sink/codec/common"
    23  	"github.com/pingcap/tiflow/pkg/sink/kafka"
    24  )
    25  
    26  var _ DMLProducer = (*MockDMLProducer)(nil)
    27  
    28  // MockDMLProducer is a mock producer for test.
    29  type MockDMLProducer struct {
    30  	mu     sync.Mutex
    31  	events map[string][]*common.Message
    32  
    33  	asyncProducer kafka.AsyncProducer
    34  }
    35  
    36  // NewDMLMockProducer creates a mock producer.
    37  func NewDMLMockProducer(_ context.Context, _ model.ChangeFeedID, asyncProducer kafka.AsyncProducer,
    38  	_ kafka.MetricsCollector,
    39  	_ chan error,
    40  	_ chan error,
    41  ) DMLProducer {
    42  	return &MockDMLProducer{
    43  		events:        make(map[string][]*common.Message),
    44  		asyncProducer: asyncProducer,
    45  	}
    46  }
    47  
    48  // AsyncSendMessage appends a message to the mock producer.
    49  func (m *MockDMLProducer) AsyncSendMessage(_ context.Context, topic string,
    50  	partition int32, message *common.Message,
    51  ) error {
    52  	m.mu.Lock()
    53  	defer m.mu.Unlock()
    54  
    55  	key := fmt.Sprintf("%s-%d", topic, partition)
    56  	if _, ok := m.events[key]; !ok {
    57  		m.events[key] = make([]*common.Message, 0)
    58  	}
    59  	m.events[key] = append(m.events[key], message)
    60  
    61  	message.Callback()
    62  
    63  	return nil
    64  }
    65  
    66  // Close do nothing.
    67  func (m *MockDMLProducer) Close() {
    68  	if m.asyncProducer != nil {
    69  		m.asyncProducer.Close()
    70  	}
    71  }
    72  
    73  // GetAllEvents returns the events received by the mock producer.
    74  func (m *MockDMLProducer) GetAllEvents() []*common.Message {
    75  	m.mu.Lock()
    76  	defer m.mu.Unlock()
    77  	var events []*common.Message
    78  	for _, v := range m.events {
    79  		events = append(events, v...)
    80  	}
    81  	return events
    82  }
    83  
    84  // GetEvents returns the event filtered by the key.
    85  func (m *MockDMLProducer) GetEvents(topic string, partition int32) []*common.Message {
    86  	m.mu.Lock()
    87  	defer m.mu.Unlock()
    88  	key := fmt.Sprintf("%s-%d", topic, partition)
    89  	return m.events[key]
    90  }