mirror of
https://github.com/prometheus/prometheus.git
synced 2024-11-16 10:34:06 -08:00
29 lines
905 B
Go
29 lines
905 B
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
|
||
|
|
|
||
|
|
// Counter tracks the number of times an event has occurred
|
||
|
|
type Counter interface {
|
||
|
|
// Inc adds the given value to the counter.
|
||
|
|
Inc(int64)
|
||
|
|
}
|
||
|
|
|
||
|
|
// NullCounter counter that does nothing
|
||
|
|
var NullCounter Counter = nullCounter{}
|
||
|
|
|
||
|
|
type nullCounter struct{}
|
||
|
|
|
||
|
|
func (nullCounter) Inc(int64) {}
|