github.com/m3db/m3@v1.5.0/src/aggregator/runtime/options_manager_test.go (about)

     1  // Copyright (c) 2017 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package runtime
    22  
    23  import (
    24  	"sync"
    25  	"testing"
    26  	"time"
    27  
    28  	"github.com/golang/mock/gomock"
    29  	"github.com/stretchr/testify/assert"
    30  )
    31  
    32  func TestRuntimeOptionsManagerUpdate(t *testing.T) {
    33  	ctrl := gomock.NewController(t)
    34  	defer ctrl.Finish()
    35  
    36  	limit := int64(100)
    37  	opts := NewOptions().SetWriteValuesPerMetricLimitPerSecond(limit)
    38  	mgr := NewOptionsManager(opts)
    39  	assert.Equal(t, limit, mgr.RuntimeOptions().WriteValuesPerMetricLimitPerSecond())
    40  
    41  	var (
    42  		res     Options
    43  		resLock sync.Mutex
    44  	)
    45  	w := NewMockOptionsWatcher(ctrl)
    46  	w.EXPECT().
    47  		SetRuntimeOptions(gomock.Any()).
    48  		Do(func(value Options) {
    49  			resLock.Lock()
    50  			res = value
    51  			resLock.Unlock()
    52  		}).
    53  		AnyTimes()
    54  
    55  	resLock.Lock()
    56  	assert.Nil(t, res)
    57  	resLock.Unlock()
    58  
    59  	// Ensure immediately sets the value.
    60  	mgr.RegisterWatcher(w)
    61  	resLock.Lock()
    62  	assert.Equal(t, opts, res)
    63  	resLock.Unlock()
    64  
    65  	// Update and verify.
    66  	newLimit := int64(200)
    67  	mgr.SetRuntimeOptions(opts.SetWriteValuesPerMetricLimitPerSecond(newLimit))
    68  
    69  	// Verify watcher receives update.
    70  	for {
    71  		resLock.Lock()
    72  		rl := res.WriteValuesPerMetricLimitPerSecond()
    73  		resLock.Unlock()
    74  		if rl == newLimit {
    75  			break
    76  		}
    77  		time.Sleep(10 * time.Millisecond)
    78  	}
    79  }