| // Copyright 2013 Google Inc. All rights reserved. |
| // Use of this source code is governed by the Apache 2.0 |
| // license that can be found in the LICENSE file. |
| |
| package appengine |
| |
| import ( |
| "time" |
| |
| "github.com/golang/protobuf/proto" |
| |
| "google.golang.org/appengine/internal" |
| ) |
| |
| // IsTimeoutError reports whether err is a timeout error. |
| func IsTimeoutError(err error) bool { |
| if t, ok := err.(interface { |
| IsTimeout() bool |
| }); ok { |
| return t.IsTimeout() |
| } |
| return false |
| } |
| |
| // Timeout returns a replacement context that uses d as the default API RPC timeout. |
| func Timeout(c Context, d time.Duration) Context { |
| return &timeoutContext{ |
| Context: c, |
| d: d, |
| } |
| } |
| |
| type timeoutContext struct { |
| Context |
| d time.Duration |
| } |
| |
| func (t *timeoutContext) Call(service, method string, in, out proto.Message, opts *internal.CallOptions) error { |
| // Only affect calls that don't have a timeout. |
| if opts == nil || opts.Timeout == 0 { |
| newOpts := new(internal.CallOptions) |
| if opts != nil { |
| *newOpts = *opts |
| } |
| newOpts.Timeout = t.d |
| opts = newOpts |
| } |
| return t.Context.Call(service, method, in, out, opts) |
| } |