36 lines
1.4 KiB
Go
36 lines
1.4 KiB
Go
|
// 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 }
|