github.com/matrixorigin/matrixone@v0.7.0/pkg/vm/engine/tae/common/retry.go (about)

     1  // Copyright 2022 Matrix Origin
     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 common
    16  
    17  import (
    18  	"context"
    19  	"runtime"
    20  	"time"
    21  
    22  	"github.com/matrixorigin/matrixone/pkg/common/moerr"
    23  )
    24  
    25  type RetryOp = func() error
    26  type WaitOp = func() (ok bool, err error)
    27  
    28  func DoRetry(op RetryOp, ctx context.Context) (err error) {
    29  	for {
    30  		if ctx != nil {
    31  			select {
    32  			case <-ctx.Done():
    33  				return
    34  			default:
    35  			}
    36  		}
    37  		err = op()
    38  		if err == nil {
    39  			break
    40  		}
    41  		runtime.Gosched()
    42  	}
    43  	return
    44  }
    45  
    46  func RetryWithIntervalAndTimeout(
    47  	op WaitOp,
    48  	timeout time.Duration,
    49  	interval time.Duration, suppressTimout bool) (err error) {
    50  
    51  	ctx, cancel := context.WithTimeout(context.Background(), timeout)
    52  	defer cancel()
    53  
    54  	ticker := time.NewTicker(interval)
    55  	defer ticker.Stop()
    56  
    57  	var ok bool
    58  	ok, err = op()
    59  	if ok {
    60  		return
    61  	}
    62  
    63  	for {
    64  		select {
    65  		case <-ctx.Done():
    66  			if suppressTimout {
    67  				return moerr.GetOkExpectedEOB()
    68  			}
    69  			return moerr.NewInternalError(ctx, "timeout")
    70  		case <-ticker.C:
    71  			ok, err = op()
    72  			if ok {
    73  				return
    74  			}
    75  		}
    76  	}
    77  }