github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/cdc/scheduler/internal/v3/transport/mock.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 transport
    15  
    16  import (
    17  	"context"
    18  
    19  	"github.com/pingcap/tiflow/cdc/scheduler/schedulepb"
    20  )
    21  
    22  // MockTrans mocks transport, used in tests.
    23  type MockTrans struct {
    24  	SendBuffer []*schedulepb.Message
    25  	RecvBuffer []*schedulepb.Message
    26  
    27  	KeepRecvBuffer bool
    28  }
    29  
    30  // NewMockTrans returns a new mock transport.
    31  func NewMockTrans() *MockTrans {
    32  	return &MockTrans{
    33  		SendBuffer: make([]*schedulepb.Message, 0),
    34  		RecvBuffer: make([]*schedulepb.Message, 0),
    35  	}
    36  }
    37  
    38  // Close mock transport.
    39  func (m *MockTrans) Close() error {
    40  	return nil
    41  }
    42  
    43  // Send sends messages.
    44  func (m *MockTrans) Send(ctx context.Context, msgs []*schedulepb.Message) error {
    45  	m.SendBuffer = append(m.SendBuffer, msgs...)
    46  	return nil
    47  }
    48  
    49  // Recv receives messages.
    50  func (m *MockTrans) Recv(ctx context.Context) ([]*schedulepb.Message, error) {
    51  	if m.KeepRecvBuffer {
    52  		return m.RecvBuffer, nil
    53  	}
    54  	messages := m.RecvBuffer[:len(m.RecvBuffer)]
    55  	m.RecvBuffer = make([]*schedulepb.Message, 0)
    56  	return messages, nil
    57  }