github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/dm/relay/streamer_test.go (about)

     1  // Copyright 2019 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 relay
    15  
    16  import (
    17  	"context"
    18  	"time"
    19  
    20  	"github.com/go-mysql-org/go-mysql/replication"
    21  	. "github.com/pingcap/check"
    22  	"github.com/pingcap/errors"
    23  	"github.com/pingcap/failpoint"
    24  	"github.com/pingcap/tiflow/dm/pkg/binlog/event"
    25  	"github.com/pingcap/tiflow/dm/pkg/terror"
    26  )
    27  
    28  var _ = Suite(&testStreamerSuite{})
    29  
    30  type testStreamerSuite struct{}
    31  
    32  func (t *testStreamerSuite) TestStreamer(c *C) {
    33  	c.Assert(failpoint.Enable("github.com/pingcap/tiflow/dm/relay/SetHeartbeatInterval", "return(10000)"), IsNil)
    34  	defer func() {
    35  		c.Assert(failpoint.Disable("github.com/pingcap/tiflow/dm/relay/SetHeartbeatInterval"), IsNil)
    36  	}()
    37  
    38  	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
    39  	defer cancel()
    40  
    41  	// generate an event
    42  	header := &replication.EventHeader{
    43  		Timestamp: uint32(time.Now().Unix()),
    44  		ServerID:  11,
    45  	}
    46  	ev, err := event.GenFormatDescriptionEvent(header, 4)
    47  	c.Assert(err, IsNil)
    48  
    49  	// 1. get event and error
    50  	s := newLocalStreamer() // with buffer
    51  	s.ch <- ev
    52  	ev2, err := s.GetEvent(ctx)
    53  	c.Assert(err, IsNil)
    54  	c.Assert(ev2, DeepEquals, ev)
    55  
    56  	// read error
    57  	errIn := errors.New("error use for streamer test 1")
    58  	s.ech <- errIn
    59  	ev2, err = s.GetEvent(ctx)
    60  	c.Assert(err, Equals, errIn)
    61  	c.Assert(ev2, IsNil)
    62  
    63  	// can not get event anymore because got error
    64  	ev2, err = s.GetEvent(ctx)
    65  	c.Assert(terror.ErrNeedSyncAgain.Equal(err), IsTrue)
    66  	c.Assert(ev2, IsNil)
    67  
    68  	// 2. close with error
    69  	s = newLocalStreamer()
    70  	errClose := errors.New("error use for streamer test 2")
    71  	s.closeWithError(errClose)
    72  	ev2, err = s.GetEvent(ctx)
    73  	c.Assert(err, Equals, errClose)
    74  	c.Assert(ev2, IsNil)
    75  
    76  	// can not get event anymore
    77  	ev2, err = s.GetEvent(ctx)
    78  	c.Assert(terror.ErrNeedSyncAgain.Equal(err), IsTrue)
    79  	c.Assert(ev2, IsNil)
    80  
    81  	// 3. close without error
    82  	s = newLocalStreamer()
    83  	s.close()
    84  	ev2, err = s.GetEvent(ctx)
    85  	c.Assert(terror.ErrSyncClosed.Equal(err), IsTrue)
    86  	c.Assert(ev2, IsNil)
    87  
    88  	// can not get event anymore
    89  	ev2, err = s.GetEvent(ctx)
    90  	c.Assert(terror.ErrNeedSyncAgain.Equal(err), IsTrue)
    91  	c.Assert(ev2, IsNil)
    92  
    93  	// 4. close with nil error
    94  	s = newLocalStreamer()
    95  	s.closeWithError(nil)
    96  	ev2, err = s.GetEvent(ctx)
    97  	c.Assert(terror.ErrSyncClosed.Equal(err), IsTrue)
    98  	c.Assert(ev2, IsNil)
    99  
   100  	// can not get event anymore
   101  	ev2, err = s.GetEvent(ctx)
   102  	c.Assert(terror.ErrNeedSyncAgain.Equal(err), IsTrue)
   103  	c.Assert(ev2, IsNil)
   104  }
   105  
   106  func (t *testStreamerSuite) TestHeartbeat(c *C) {
   107  	c.Assert(failpoint.Enable("github.com/pingcap/tiflow/dm/relay/SetHeartbeatInterval", "return(1)"), IsNil)
   108  	defer func() {
   109  		c.Assert(failpoint.Disable("github.com/pingcap/tiflow/dm/relay/SetHeartbeatInterval"), IsNil)
   110  	}()
   111  
   112  	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
   113  	defer cancel()
   114  	s := newLocalStreamer()
   115  	ev, err := s.GetEvent(ctx)
   116  	c.Assert(err, IsNil)
   117  	c.Assert(ev.Header.EventType, Equals, replication.HEARTBEAT_EVENT)
   118  }