-
Notifications
You must be signed in to change notification settings - Fork 100
/
nop.go
76 lines (59 loc) · 3.04 KB
/
nop.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package pally
import "time"
var (
// Use global no-ops to avoid allocating on each call to NewNop*.
_nopCounter Counter = nop{}
_nopCounterVector CounterVector = nopCounterVec{}
_nopGauge Gauge = nop{}
_nopGaugeVector GaugeVector = nopGaugeVec{}
_nopLatencies Latencies = nop{}
_nopLatenciesVector LatenciesVector = nopLatenciesVec{}
)
// NewNopCounter returns a no-op Counter.
func NewNopCounter() Counter { return _nopCounter }
// NewNopCounterVector returns a no-op CounterVector.
func NewNopCounterVector() CounterVector { return _nopCounterVector }
// NewNopGauge returns a no-op Gauge.
func NewNopGauge() Gauge { return _nopGauge }
// NewNopGaugeVector returns a no-op GaugeVector.
func NewNopGaugeVector() GaugeVector { return _nopGaugeVector }
// NewNopLatencies returns a no-op Latencies.
func NewNopLatencies() Latencies { return _nopLatencies }
// NewNopLatenciesVector returns a no-op LatenciesVector.
func NewNopLatenciesVector() LatenciesVector { return _nopLatenciesVector }
type nop struct{}
func (nop) Inc() int64 { return 0 }
func (nop) Dec() int64 { return 0 }
func (nop) Add(_ int64) int64 { return 0 }
func (nop) Sub(_ int64) int64 { return 0 }
func (nop) Store(_ int64) {}
func (nop) Load() int64 { return 0 }
func (nop) Observe(_ time.Duration) {}
type nopCounterVec struct{}
func (nopCounterVec) Get(...string) (Counter, error) { return NewNopCounter(), nil }
func (nopCounterVec) MustGet(...string) Counter { return NewNopCounter() }
type nopGaugeVec struct{}
func (nopGaugeVec) Get(...string) (Gauge, error) { return NewNopGauge(), nil }
func (nopGaugeVec) MustGet(...string) Gauge { return NewNopGauge() }
type nopLatenciesVec struct{}
func (nopLatenciesVec) Get(...string) (Latencies, error) { return NewNopLatencies(), nil }
func (nopLatenciesVec) MustGet(...string) Latencies { return NewNopLatencies() }