blob: 78b2496279292158ce42470c4a926d42f683b8f6 (
plain)
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
|
// Copyright (C) 2015 The Android Open Source Project
//
// 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 com.google.gerrit.metrics;
import com.google.gerrit.extensions.registration.RegistrationHandle;
/**
* Metric whose value increments during the life of the process.
*
* <p>Suitable uses are "total requests handled", "bytes sent", etc. Use {@link
* Description#setRate()} to suggest the monitoring system should also track the rate of increments
* if this is of interest.
*
* <p>For an instantaneous read of a value that can change over time (e.g. "memory in use") use a
* {@link CallbackMetric}.
*
* @param <F1> type of the field.
*/
public abstract class Counter1<F1> implements RegistrationHandle {
/**
* Increment the counter by one event.
*
* @param field1 bucket to increment.
*/
public void increment(F1 field1) {
incrementBy(field1, 1);
}
/**
* Increment the counter by a specified amount.
*
* @param field1 bucket to increment.
* @param value value to increment by, must be >= 0.
*/
public abstract void incrementBy(F1 field1, long value);
}
|