| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.gearpump.metrics |
| |
| import com.codahale.metrics.{Counter => CodaHaleCounter} |
| |
| /** |
| * @see com.codahale.metrics.Counter |
| */ |
| class Counter(val name: String, counter: CodaHaleCounter, sampleRate: Int = 1) { |
| private var sampleCount = 0L |
| private var toBeIncremented = 0L |
| |
| def inc() { |
| inc(1) |
| } |
| |
| def inc(n: Long) { |
| toBeIncremented += n |
| sampleCount += 1 |
| if (null != counter && sampleCount % sampleRate == 0) { |
| counter.inc(toBeIncremented) |
| toBeIncremented = 0 |
| } |
| } |
| } |