From 8c12c6939aab9106db14ec2d11d983bc5b29fb2c Mon Sep 17 00:00:00 2001 From: Niall Sheridan Date: Sun, 7 Jul 2019 21:33:44 +0100 Subject: Switch to modules --- vendor/github.com/googleapis/gax-go/call_option.go | 157 --------------------- 1 file changed, 157 deletions(-) delete mode 100644 vendor/github.com/googleapis/gax-go/call_option.go (limited to 'vendor/github.com/googleapis/gax-go/call_option.go') diff --git a/vendor/github.com/googleapis/gax-go/call_option.go b/vendor/github.com/googleapis/gax-go/call_option.go deleted file mode 100644 index 7b62164..0000000 --- a/vendor/github.com/googleapis/gax-go/call_option.go +++ /dev/null @@ -1,157 +0,0 @@ -// Copyright 2016, Google Inc. -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -package gax - -import ( - "math/rand" - "time" - - "google.golang.org/grpc" - "google.golang.org/grpc/codes" - "google.golang.org/grpc/status" -) - -// CallOption is an option used by Invoke to control behaviors of RPC calls. -// CallOption works by modifying relevant fields of CallSettings. -type CallOption interface { - // Resolve applies the option by modifying cs. - Resolve(cs *CallSettings) -} - -// Retryer is used by Invoke to determine retry behavior. -type Retryer interface { - // Retry reports whether a request should be retriedand how long to pause before retrying - // if the previous attempt returned with err. Invoke never calls Retry with nil error. - Retry(err error) (pause time.Duration, shouldRetry bool) -} - -type retryerOption func() Retryer - -func (o retryerOption) Resolve(s *CallSettings) { - s.Retry = o -} - -// WithRetry sets CallSettings.Retry to fn. -func WithRetry(fn func() Retryer) CallOption { - return retryerOption(fn) -} - -// OnCodes returns a Retryer that retries if and only if -// the previous attempt returns a GRPC error whose error code is stored in cc. -// Pause times between retries are specified by bo. -// -// bo is only used for its parameters; each Retryer has its own copy. -func OnCodes(cc []codes.Code, bo Backoff) Retryer { - return &boRetryer{ - backoff: bo, - codes: append([]codes.Code(nil), cc...), - } -} - -type boRetryer struct { - backoff Backoff - codes []codes.Code -} - -func (r *boRetryer) Retry(err error) (time.Duration, bool) { - st, ok := status.FromError(err) - if !ok { - return 0, false - } - c := st.Code() - for _, rc := range r.codes { - if c == rc { - return r.backoff.Pause(), true - } - } - return 0, false -} - -// Backoff implements exponential backoff. -// The wait time between retries is a random value between 0 and the "retry envelope". -// The envelope starts at Initial and increases by the factor of Multiplier every retry, -// but is capped at Max. -type Backoff struct { - // Initial is the initial value of the retry envelope, defaults to 1 second. - Initial time.Duration - - // Max is the maximum value of the retry envelope, defaults to 30 seconds. - Max time.Duration - - // Multiplier is the factor by which the retry envelope increases. - // It should be greater than 1 and defaults to 2. - Multiplier float64 - - // cur is the current retry envelope - cur time.Duration -} - -func (bo *Backoff) Pause() time.Duration { - if bo.Initial == 0 { - bo.Initial = time.Second - } - if bo.cur == 0 { - bo.cur = bo.Initial - } - if bo.Max == 0 { - bo.Max = 30 * time.Second - } - if bo.Multiplier < 1 { - bo.Multiplier = 2 - } - // Select a duration between zero and the current max. It might seem counterintuitive to - // have so much jitter, but https://www.awsarchitectureblog.com/2015/03/backoff.html - // argues that that is the best strategy. - d := time.Duration(rand.Int63n(int64(bo.cur))) - bo.cur = time.Duration(float64(bo.cur) * bo.Multiplier) - if bo.cur > bo.Max { - bo.cur = bo.Max - } - return d -} - -type grpcOpt []grpc.CallOption - -func (o grpcOpt) Resolve(s *CallSettings) { - s.GRPC = o -} - -func WithGRPCOptions(opt ...grpc.CallOption) CallOption { - return grpcOpt(append([]grpc.CallOption(nil), opt...)) -} - -type CallSettings struct { - // Retry returns a Retryer to be used to control retry logic of a method call. - // If Retry is nil or the returned Retryer is nil, the call will not be retried. - Retry func() Retryer - - // CallOptions to be forwarded to GRPC. - GRPC []grpc.CallOption -} -- cgit v1.2.3