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// 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)
}
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