github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/dm/pkg/utils/relay_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 utils
    15  
    16  import (
    17  	"os"
    18  	"strings"
    19  	"testing"
    20  
    21  	"github.com/go-mysql-org/go-mysql/replication"
    22  	"github.com/stretchr/testify/require"
    23  )
    24  
    25  func TestParseUUIDIndex(t *testing.T) {
    26  	t.Parallel()
    27  
    28  	f, err := os.CreateTemp("", "server-uuid.index")
    29  	require.NoError(t, err)
    30  	defer os.Remove(f.Name())
    31  
    32  	uuids := []string{
    33  		"c65525fa-c7a3-11e8-a878-0242ac130005.000001",
    34  		"c6ae5afe-c7a3-11e8-a19d-0242ac130006.000002",
    35  		"c65525fa-c7a3-11e8-a878-0242ac130005.000003",
    36  	}
    37  
    38  	err = os.WriteFile(f.Name(), []byte(strings.Join(uuids, "\n")), 0o644)
    39  	require.NoError(t, err)
    40  
    41  	obtainedUUIDs, err := ParseUUIDIndex(f.Name())
    42  	require.NoError(t, err)
    43  	require.Equal(t, uuids, obtainedUUIDs)
    44  
    45  	// test GetUUIDBySuffix
    46  	uuid := uuids[1]
    47  	uuidWS := GetUUIDBySuffix(uuids, uuid[len(uuid)-6:])
    48  	require.Equal(t, uuid, uuidWS)
    49  
    50  	uuidWS = GetUUIDBySuffix(uuids, "100000")
    51  	require.Equal(t, "", uuidWS)
    52  }
    53  
    54  func TestSuffixForUUID(t *testing.T) {
    55  	t.Parallel()
    56  
    57  	cases := []struct {
    58  		uuid           string
    59  		ID             int
    60  		uuidWithSuffix string
    61  	}{
    62  		{"c65525fa-c7a3-11e8-a878-0242ac130005", 1, "c65525fa-c7a3-11e8-a878-0242ac130005.000001"},
    63  		{"c6ae5afe-c7a3-11e8-a19d-0242ac130006", 2, "c6ae5afe-c7a3-11e8-a19d-0242ac130006.000002"},
    64  	}
    65  
    66  	for _, cs := range cases {
    67  		uuidWS := AddSuffixForUUID(cs.uuid, cs.ID)
    68  		require.Equal(t, cs.uuidWithSuffix, uuidWS)
    69  
    70  		uuidWOS, id, err := ParseRelaySubDir(cs.uuidWithSuffix)
    71  		require.NoError(t, err)
    72  		require.Equal(t, cs.uuid, uuidWOS)
    73  		require.Equal(t, cs.ID, id)
    74  
    75  		suffix := SuffixIntToStr(cs.ID)
    76  		hasSuffix := strings.HasSuffix(cs.uuidWithSuffix, suffix)
    77  		require.Equal(t, true, hasSuffix)
    78  	}
    79  
    80  	_, _, err := ParseRelaySubDir("uuid-with-out-suffix")
    81  	require.Error(t, err)
    82  
    83  	_, _, err = ParseRelaySubDir("uuid-invalid-suffix-len.01")
    84  	require.Error(t, err)
    85  
    86  	_, _, err = ParseRelaySubDir("uuid-invalid-suffix-fmt.abc")
    87  	require.Error(t, err)
    88  
    89  	_, _, err = ParseRelaySubDir("uuid-invalid-fmt.abc.000001")
    90  	require.Error(t, err)
    91  }
    92  
    93  func TestGenFakeRotateEvent(t *testing.T) {
    94  	t.Parallel()
    95  
    96  	var (
    97  		nextLogName = "mysql-bin.000123"
    98  		logPos      = uint64(456)
    99  		serverID    = uint32(101)
   100  	)
   101  
   102  	ev, err := GenFakeRotateEvent(nextLogName, logPos, serverID)
   103  	require.NoError(t, err)
   104  	require.Equal(t, serverID, ev.Header.ServerID)
   105  	require.Equal(t, uint32(0), ev.Header.Timestamp)
   106  	require.Equal(t, uint32(0), ev.Header.LogPos)
   107  	require.Equal(t, replication.ROTATE_EVENT, ev.Header.EventType)
   108  
   109  	evR, ok := ev.Event.(*replication.RotateEvent)
   110  	require.True(t, ok)
   111  	require.Equal(t, nextLogName, string(evR.NextLogName))
   112  	require.Equal(t, logPos, evR.Position)
   113  }