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47 lines
1.1 KiB
Go
47 lines
1.1 KiB
Go
// Copyright 2011 Google Inc. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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// This file provides error functions for common API failure modes.
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package appengine
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import (
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"fmt"
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"google.golang.org/appengine/internal"
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)
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// IsOverQuota reports whether err represents an API call failure
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// due to insufficient available quota.
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func IsOverQuota(err error) bool {
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callErr, ok := err.(*internal.CallError)
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return ok && callErr.Code == 4
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}
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// MultiError is returned by batch operations when there are errors with
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// particular elements. Errors will be in a one-to-one correspondence with
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// the input elements; successful elements will have a nil entry.
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type MultiError []error
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func (m MultiError) Error() string {
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s, n := "", 0
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for _, e := range m {
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if e != nil {
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if n == 0 {
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s = e.Error()
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}
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n++
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}
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}
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switch n {
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case 0:
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return "(0 errors)"
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case 1:
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return s
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case 2:
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return s + " (and 1 other error)"
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}
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return fmt.Sprintf("%s (and %d other errors)", s, n-1)
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}
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