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
|
// Copyright (c) 2017 Uber Technologies, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package metrics
// Factory creates new metrics
type Factory interface {
Counter(name string, tags map[string]string) Counter
Timer(name string, tags map[string]string) Timer
Gauge(name string, tags map[string]string) Gauge
// Namespace returns a nested metrics factory.
Namespace(name string, tags map[string]string) Factory
}
// NullFactory is a metrics factory that returns NullCounter, NullTimer, and NullGauge.
var NullFactory Factory = nullFactory{}
type nullFactory struct{}
func (nullFactory) Counter(name string, tags map[string]string) Counter { return NullCounter }
func (nullFactory) Timer(name string, tags map[string]string) Timer { return NullTimer }
func (nullFactory) Gauge(name string, tags map[string]string) Gauge { return NullGauge }
func (nullFactory) Namespace(name string, tags map[string]string) Factory { return NullFactory }
|
