1 files changed, 5 insertions, 65 deletions
diff --git a/vendor/google.golang.org/grpc/backoff.go b/vendor/google.golang.org/grpc/backoff.go
index 090fbe8..fa31565 100644
--- 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)
 }