github.com/m3db/m3@v1.5.0/src/dbnode/integration/run_custom_background_process_test.go (about)

     1  // +build integration
     2  
     3  // Copyright (c) 2020 Uber Technologies, Inc.
     4  //
     5  // Permission is hereby granted, free of charge, to any person obtaining a copy
     6  // of this software and associated documentation files (the "Software"), to deal
     7  // in the Software without restriction, including without limitation the rights
     8  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     9  // copies of the Software, and to permit persons to whom the Software is
    10  // furnished to do so, subject to the following conditions:
    11  //
    12  // The above copyright notice and this permission notice shall be included in
    13  // all copies or substantial portions of the Software.
    14  //
    15  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    16  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    17  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    18  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    19  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    20  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    21  // THE SOFTWARE.
    22  
    23  package integration
    24  
    25  import (
    26  	"testing"
    27  	"time"
    28  
    29  	"github.com/m3db/m3/src/dbnode/storage"
    30  	xclock "github.com/m3db/m3/src/x/clock"
    31  
    32  	"github.com/stretchr/testify/assert"
    33  	"github.com/stretchr/testify/require"
    34  	"go.uber.org/atomic"
    35  )
    36  
    37  type testBackgroundProcess struct {
    38  	executed, reported, stopped atomic.Int32
    39  }
    40  
    41  func (p *testBackgroundProcess) run() {
    42  	xclock.WaitUntil(func() bool {
    43  		return p.reported.Load() > 0
    44  	}, time.Minute)
    45  	p.executed.Inc()
    46  	xclock.WaitUntil(func() bool {
    47  		return p.stopped.Load() > 0
    48  	}, time.Minute)
    49  }
    50  
    51  func (p *testBackgroundProcess) Start() {
    52  	go p.run()
    53  }
    54  
    55  func (p *testBackgroundProcess) Stop() {
    56  	p.stopped.Inc()
    57  	return
    58  }
    59  
    60  func (p *testBackgroundProcess) Report() {
    61  	p.reported.Inc()
    62  	return
    63  }
    64  
    65  func TestRunCustomBackgroundProcess(t *testing.T) {
    66  	testOpts := NewTestOptions(t).SetReportInterval(time.Millisecond)
    67  	testSetup := newTestSetupWithCommitLogAndFilesystemBootstrapper(t, testOpts)
    68  	defer testSetup.Close()
    69  
    70  	backgroundProcess := &testBackgroundProcess{}
    71  
    72  	storageOpts := testSetup.StorageOpts().
    73  		SetBackgroundProcessFns([]storage.NewBackgroundProcessFn{
    74  			func(storage.Database, storage.Options) (storage.BackgroundProcess, error) {
    75  				return backgroundProcess, nil
    76  			}})
    77  	testSetup.SetStorageOpts(storageOpts)
    78  
    79  	log := storageOpts.InstrumentOptions().Logger()
    80  
    81  	// Start the server.
    82  	require.NoError(t, testSetup.StartServer())
    83  
    84  	// Stop the server.
    85  	defer func() {
    86  		require.NoError(t, testSetup.StopServer())
    87  		log.Debug("server is now down")
    88  		assert.Equal(t, int32(1), backgroundProcess.stopped.Load(), "failed to stop")
    89  	}()
    90  
    91  	log.Info("waiting for the custom background process to execute")
    92  	xclock.WaitUntil(func() bool {
    93  		return backgroundProcess.executed.Load() > 0
    94  	}, time.Minute)
    95  
    96  	assert.Equal(t, int32(1), backgroundProcess.executed.Load(), "failed to execute")
    97  	assert.True(t, backgroundProcess.reported.Load() > 0, "failed to report")
    98  }