Copyright 2016 Google LLC Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

package internal

import (
	
	

	gax 
)
Retry calls the supplied function f repeatedly according to the provided backoff parameters. It returns when one of the following occurs: When f's first return value is true, Retry immediately returns with f's second return value. When the provided context is done, Retry returns with an error that includes both ctx.Error() and the last error returned by f.
func ( context.Context,  gax.Backoff,  func() ( bool,  error)) error {
	return retry(, , , gax.Sleep)
}

func ( context.Context,  gax.Backoff,  func() ( bool,  error),
	 func(context.Context, time.Duration) error) error {
	var  error
	for {
		,  := ()
		if  {
			return 
Remember the last "real" error from f.
		if  != nil &&  != context.Canceled &&  != context.DeadlineExceeded {
			 = 
		}
		 := .Pause()
		if  := (, );  != nil {
			if  != nil {
				return Annotatef(, "retry failed with %v; last error", )
			}
			return 
		}
	}