Upgrade to 0.12

[github/fretlink/terraform-provider-statuscake.git] / vendor / google.golang.org / grpc / backoff.go

diff --git a/vendor/google.golang.org/grpc/backoff.go b/vendor/google.golang.org/grpc/backoff.go
index 090fbe87c522aba43b7929611706cf1464186f62..fa31565fd2839b146f371bcff8e0e834de7334fd 100644 (file)
--- a/vendor/google.golang.org/grpc/backoff.go
+++ b/vendor/google.golang.org/grpc/backoff.go
@@ -16,83 +16,23 @@
  *
  */
 
+// See internal/backoff package for the backoff implementation. This file is
+// kept for the exported types and API backward compatility.
+
 package grpc
 
 import (
-       "math/rand"
        "time"
 )
 
 // DefaultBackoffConfig uses values specified for backoff in
 // https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md.
-var (
-       DefaultBackoffConfig = BackoffConfig{
-               MaxDelay:  120 * time.Second,
-               baseDelay: 1.0 * time.Second,
-               factor:    1.6,
-               jitter:    0.2,
-       }
-)
-
-// backoffStrategy defines the methodology for backing off after a grpc
-// connection failure.
-//
-// This is unexported until the gRPC project decides whether or not to allow
-// alternative backoff strategies. Once a decision is made, this type and its
-// method may be exported.
-type backoffStrategy interface {
-       // backoff returns the amount of time to wait before the next retry given
-       // the number of consecutive failures.
-       backoff(retries int) time.Duration
+var DefaultBackoffConfig = BackoffConfig{
+       MaxDelay: 120 * time.Second,
 }
 
 // BackoffConfig defines the parameters for the default gRPC backoff strategy.
 type BackoffConfig struct {
        // MaxDelay is the upper bound of backoff delay.
        MaxDelay time.Duration
-
-       // TODO(stevvooe): The following fields are not exported, as allowing
-       // changes would violate the current gRPC specification for backoff. If
-       // gRPC decides to allow more interesting backoff strategies, these fields
-       // may be opened up in the future.
-
-       // baseDelay is the amount of time to wait before retrying after the first
-       // failure.
-       baseDelay time.Duration
-
-       // factor is applied to the backoff after each retry.
-       factor float64
-
-       // jitter provides a range to randomize backoff delays.
-       jitter float64
-}
-
-func setDefaults(bc *BackoffConfig) {
-       md := bc.MaxDelay
-       *bc = DefaultBackoffConfig
-
-       if md > 0 {
-               bc.MaxDelay = md
-       }
-}
-
-func (bc BackoffConfig) backoff(retries int) time.Duration {
-       if retries == 0 {
-               return bc.baseDelay
-       }
-       backoff, max := float64(bc.baseDelay), float64(bc.MaxDelay)
-       for backoff < max && retries > 0 {
-               backoff *= bc.factor
-               retries--
-       }
-       if backoff > max {
-               backoff = max
-       }
-       // Randomize backoff delays so that if a cluster of requests start at
-       // the same time, they won't operate in lockstep.
-       backoff *= 1 + bc.jitter*(rand.Float64()*2-1)
-       if backoff < 0 {
-               return 0
-       }
-       return time.Duration(backoff)
 }