common/prpc, tools/cmd/cproto: prpc client

common/retry/transient.go

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package retry
 
 import (
         "time"
 
         "github.com/luci/luci-go/common/errors"
@@ skipping 11 matching lines @@
 func (i *transientOnlyIterator) Next(ctx context.Context, err error) time.Duration {
         if !errors.IsTransient(err) {
                 return Stop
         }
         return i.Iterator.Next(ctx, err)
 }
 
 // TransientOnly returns an Iterator that wraps another Iterator. It will fall
 // through to the wrapped Iterator if a transient error is encountered;
 // otherwise, it will not retry.
+// Returns nil if f is nil.
 func TransientOnly(f Factory) Factory {
+        if f == nil {
+                return nil
+        }
         return wrap(f, func(it Iterator) Iterator {
                 return &transientOnlyIterator{it}
         })
 }