github.com/dolthub/dolt/go@v0.40.5-0.20240520175717-68db7794bea6/libraries/doltcore/remotestorage/retrying_interceptor.go (about)

     1  // Copyright 2020 Dolthub, Inc.
     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 remotestorage
    16  
    17  import (
    18  	"context"
    19  
    20  	"github.com/cenkalti/backoff/v4"
    21  	"google.golang.org/grpc"
    22  )
    23  
    24  const (
    25  	grpcRetries = 5
    26  )
    27  
    28  func grpcBackOff(ctx context.Context) backoff.BackOff {
    29  	ret := backoff.NewExponentialBackOff()
    30  	return backoff.WithContext(backoff.WithMaxRetries(ret, grpcRetries), ctx)
    31  }
    32  
    33  func RetryingUnaryClientInterceptor(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
    34  	doit := func() error {
    35  		return processGrpcErr(invoker(ctx, method, req, reply, cc, opts...))
    36  	}
    37  	return backoff.Retry(doit, grpcBackOff(ctx))
    38  }