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Issue 1247283003: Improve docs (Closed) Base URL: https://github.com/luci/gae.git@reduce_size
Patch Set: fix comments Created 5 years, 5 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Package count contains 'counter' filters for all the gae services. This
6 // serves as a set of simple example filters, and also enables other filters
7 // to test to see if certain underlying APIs are called when they should be
8 // (e.g. for the datastore mcache filter, for example).
9 package count
10
11 import (
12 "sync/atomic"
13 )
14
15 // Entry is a success/fail pair for a single API method. It's returned
16 // by the Counter interface.
17 type Entry struct {
18 Successes int64
19 Errors int64
20 }
21
22 // Total is a convenience function for getting the total number of calls to
23 // this API. It's Successes+Errors.
24 func (e Entry) Total() int64 { return e.Successes + e.Errors }
25
26 func (e *Entry) up(errs ...error) error {
27 err := error(nil)
28 if len(errs) > 0 {
29 err = errs[0]
30 }
31 if err == nil {
32 atomic.AddInt64(&e.Successes, 1)
33 } else {
34 atomic.AddInt64(&e.Errors, 1)
35 }
36 return err
37 }
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