github.com/alibaba/ilogtail/pkg@v0.0.0-20250526110833-c53b480d046c/helper/async/count_helper.go (about)

     1  // Copyright 2023 iLogtail Authors
     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  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package async
    16  
    17  import (
    18  	"fmt"
    19  	"sync/atomic"
    20  	"time"
    21  )
    22  
    23  type UnittestCounter interface {
    24  	Begin(callback func()) bool
    25  	End(timeout time.Duration, expectNum int64) error
    26  	AddDelta(num int64)
    27  }
    28  
    29  type UnitTestCounterHelper struct {
    30  	signal   chan struct{}
    31  	num      int64
    32  	callback func()
    33  }
    34  
    35  func (a *UnitTestCounterHelper) Begin(callback func()) bool {
    36  	a.signal = make(chan struct{})
    37  	a.callback = callback
    38  	go func() {
    39  		<-a.signal
    40  		a.callback()
    41  	}()
    42  	return true
    43  }
    44  
    45  func (a *UnitTestCounterHelper) End(timeout time.Duration, expectNum int64) error {
    46  	begin := time.Now()
    47  	for {
    48  		if time.Since(begin).Nanoseconds() > timeout.Nanoseconds() {
    49  			return fmt.Errorf("timeout because unable to go enough events, expect: %d, current: %d", expectNum, atomic.LoadInt64(&a.num))
    50  		}
    51  		if atomic.LoadInt64(&a.num) == expectNum {
    52  			close(a.signal)
    53  			break
    54  		}
    55  		time.Sleep(time.Millisecond)
    56  	}
    57  	return nil
    58  }
    59  
    60  func (a *UnitTestCounterHelper) AddDelta(num int64) {
    61  	atomic.AddInt64(&a.num, num)
    62  }