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backoff.go (1996B)

      1 /*
      2  *
      3  * Copyright 2017 gRPC authors.
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at
      8  *
      9  *     http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  *
     17  */
     18 
     19 // See internal/backoff package for the backoff implementation. This file is
     20 // kept for the exported types and API backward compatibility.
     21 
     22 package grpc
     23 
     24 import (
     25 	"time"
     26 
     27 	"google.golang.org/grpc/backoff"
     28 )
     29 
     30 // DefaultBackoffConfig uses values specified for backoff in
     31 // https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md.
     32 //
     33 // Deprecated: use ConnectParams instead. Will be supported throughout 1.x.
     34 var DefaultBackoffConfig = BackoffConfig{
     35 	MaxDelay: 120 * time.Second,
     36 }
     37 
     38 // BackoffConfig defines the parameters for the default gRPC backoff strategy.
     39 //
     40 // Deprecated: use ConnectParams instead. Will be supported throughout 1.x.
     41 type BackoffConfig struct {
     42 	// MaxDelay is the upper bound of backoff delay.
     43 	MaxDelay time.Duration
     44 }
     45 
     46 // ConnectParams defines the parameters for connecting and retrying. Users are
     47 // encouraged to use this instead of the BackoffConfig type defined above. See
     48 // here for more details:
     49 // https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md.
     50 //
     51 // # Experimental
     52 //
     53 // Notice: This type is EXPERIMENTAL and may be changed or removed in a
     54 // later release.
     55 type ConnectParams struct {
     56 	// Backoff specifies the configuration options for connection backoff.
     57 	Backoff backoff.Config
     58 	// MinConnectTimeout is the minimum amount of time we are willing to give a
     59 	// connection to complete.
     60 	MinConnectTimeout time.Duration
     61 }