vitess.io/vitess@v0.16.2/go/vt/vttablet/tabletserver/repltracker/repltracker_test.go (about)

     1  /*
     2  Copyright 2020 The Vitess Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package repltracker
    18  
    19  import (
    20  	"errors"
    21  	"testing"
    22  	"time"
    23  
    24  	"github.com/stretchr/testify/assert"
    25  
    26  	"vitess.io/vitess/go/mysql/fakesqldb"
    27  	"vitess.io/vitess/go/vt/dbconfigs"
    28  	"vitess.io/vitess/go/vt/mysqlctl/fakemysqldaemon"
    29  	querypb "vitess.io/vitess/go/vt/proto/query"
    30  	topodatapb "vitess.io/vitess/go/vt/proto/topodata"
    31  	"vitess.io/vitess/go/vt/vttablet/tabletserver/tabletenv"
    32  )
    33  
    34  func TestReplTracker(t *testing.T) {
    35  	db := fakesqldb.New(t)
    36  	defer db.Close()
    37  
    38  	config := tabletenv.NewDefaultConfig()
    39  	config.ReplicationTracker.Mode = tabletenv.Heartbeat
    40  	config.ReplicationTracker.HeartbeatIntervalSeconds = 1
    41  	params, _ := db.ConnParams().MysqlParams()
    42  	cp := *params
    43  	config.DB = dbconfigs.NewTestDBConfigs(cp, cp, "")
    44  	env := tabletenv.NewEnv(config, "ReplTrackerTest")
    45  	alias := &topodatapb.TabletAlias{
    46  		Cell: "cell",
    47  		Uid:  1,
    48  	}
    49  	target := &querypb.Target{}
    50  	mysqld := fakemysqldaemon.NewFakeMysqlDaemon(nil)
    51  
    52  	rt := NewReplTracker(env, alias)
    53  	rt.InitDBConfig(target, mysqld)
    54  	assert.Equal(t, tabletenv.Heartbeat, rt.mode)
    55  	assert.True(t, rt.hw.enabled)
    56  	assert.True(t, rt.hr.enabled)
    57  
    58  	rt.MakePrimary()
    59  	assert.True(t, rt.hw.isOpen)
    60  	assert.False(t, rt.hr.isOpen)
    61  	assert.True(t, rt.isPrimary)
    62  
    63  	lag, err := rt.Status()
    64  	assert.NoError(t, err)
    65  	assert.Equal(t, time.Duration(0), lag)
    66  
    67  	rt.MakeNonPrimary()
    68  	assert.False(t, rt.hw.isOpen)
    69  	assert.True(t, rt.hr.isOpen)
    70  	assert.False(t, rt.isPrimary)
    71  
    72  	rt.hr.lastKnownLag = 1 * time.Second
    73  	lag, err = rt.Status()
    74  	assert.NoError(t, err)
    75  	assert.Equal(t, 1*time.Second, lag)
    76  
    77  	rt.Close()
    78  	assert.False(t, rt.hw.isOpen)
    79  	assert.False(t, rt.hr.isOpen)
    80  
    81  	config.ReplicationTracker.Mode = tabletenv.Polling
    82  	rt = NewReplTracker(env, alias)
    83  	rt.InitDBConfig(target, mysqld)
    84  	assert.Equal(t, tabletenv.Polling, rt.mode)
    85  	assert.Equal(t, mysqld, rt.poller.mysqld)
    86  	assert.False(t, rt.hw.enabled)
    87  	assert.False(t, rt.hr.enabled)
    88  
    89  	rt.MakeNonPrimary()
    90  	assert.False(t, rt.hw.isOpen)
    91  	assert.False(t, rt.hr.isOpen)
    92  	assert.False(t, rt.isPrimary)
    93  
    94  	mysqld.ReplicationStatusError = errors.New("err")
    95  	_, err = rt.Status()
    96  	assert.Equal(t, "err", err.Error())
    97  }