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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 | |
| 6 | |
| 7 import ( | |
| 8 "golang.org/x/net/context" | |
| 9 | |
| 10 mc "github.com/luci/gae/service/memcache" | |
| 11 ) | |
| 12 | |
| 13 // MCCounter is the counter object for the Memcache service. | |
| 14 type MCCounter struct { | |
| 15 NewItem Entry | |
| 16 Add Entry | |
| 17 Set Entry | |
| 18 Get Entry | |
| 19 Delete Entry | |
| 20 CompareAndSwap Entry | |
| 21 AddMulti Entry | |
| 22 SetMulti Entry | |
| 23 GetMulti Entry | |
| 24 DeleteMulti Entry | |
| 25 CompareAndSwapMulti Entry | |
| 26 Increment Entry | |
| 27 IncrementExisting Entry | |
| 28 Flush Entry | |
| 29 Stats Entry | |
| 30 } | |
| 31 | |
| 32 type mcCounter struct { | |
| 33 c *MCCounter | |
| 34 | |
| 35 mc mc.Interface | |
| 36 } | |
| 37 | |
| 38 var _ mc.Interface = (*mcCounter)(nil) | |
| 39 | |
| 40 func (m *mcCounter) NewItem(key string) mc.Item { | |
| 41 m.c.NewItem.up() | |
| 42 return m.mc.NewItem(key) | |
| 43 } | |
| 44 | |
| 45 func (m *mcCounter) Get(key string) (mc.Item, error) { | |
| 46 ret, err := m.mc.Get(key) | |
| 47 return ret, m.c.Get.up(err) | |
| 48 } | |
| 49 | |
| 50 func (m *mcCounter) GetMulti(keys []string) (map[string]mc.Item, error) { | |
| 51 ret, err := m.mc.GetMulti(keys) | |
| 52 return ret, m.c.GetMulti.up(err) | |
| 53 } | |
| 54 | |
| 55 func (m *mcCounter) Add(item mc.Item) error { return m.c.Add.up(m.mc.Add(item))
} | |
| 56 func (m *mcCounter) Set(item mc.Item) error { return m.c.Set.up(m.mc.Set(item))
} | |
| 57 func (m *mcCounter) Delete(key string) error { return m.c.Delete.up(m.mc.Delete(
key)) } | |
| 58 func (m *mcCounter) CompareAndSwap(item mc.Item) error { | |
| 59 return m.c.CompareAndSwap.up(m.mc.CompareAndSwap(item)) | |
| 60 } | |
| 61 func (m *mcCounter) AddMulti(items []mc.Item) error { return m.c.AddMulti.up(m.m
c.AddMulti(items)) } | |
| 62 func (m *mcCounter) SetMulti(items []mc.Item) error { return m.c.SetMulti.up(m.m
c.SetMulti(items)) } | |
| 63 func (m *mcCounter) DeleteMulti(keys []string) error { | |
| 64 return m.c.DeleteMulti.up(m.mc.DeleteMulti(keys)) | |
| 65 } | |
| 66 func (m *mcCounter) Flush() error { return m.c.Flush.up(m.mc.Flush()) } | |
| 67 | |
| 68 func (m *mcCounter) CompareAndSwapMulti(items []mc.Item) error { | |
| 69 return m.c.CompareAndSwapMulti.up(m.mc.CompareAndSwapMulti(items)) | |
| 70 } | |
| 71 | |
| 72 func (m *mcCounter) Increment(key string, delta int64, initialValue uint64) (new
Value uint64, err error) { | |
| 73 ret, err := m.mc.Increment(key, delta, initialValue) | |
| 74 return ret, m.c.Increment.up(err) | |
| 75 } | |
| 76 | |
| 77 func (m *mcCounter) IncrementExisting(key string, delta int64) (newValue uint64,
err error) { | |
| 78 ret, err := m.mc.IncrementExisting(key, delta) | |
| 79 return ret, m.c.IncrementExisting.up(err) | |
| 80 } | |
| 81 | |
| 82 func (m *mcCounter) Stats() (*mc.Statistics, error) { | |
| 83 ret, err := m.mc.Stats() | |
| 84 return ret, m.c.Stats.up(err) | |
| 85 } | |
| 86 | |
| 87 // FilterMC installs a counter Memcache filter in the context. | |
| 88 func FilterMC(c context.Context) (context.Context, *MCCounter) { | |
| 89 state := &MCCounter{} | |
| 90 return mc.AddFilters(c, func(ic context.Context, mc mc.Interface) mc.Int
erface { | |
| 91 return &mcCounter{state, mc} | |
| 92 }), state | |
| 93 } | |
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