001/* 002 * (C) Copyright 2006-2009 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Nuxeo - initial API and implementation 018 * 019 * $Id$ 020 */ 021package org.nuxeo.runtime.management.counters; 022 023import org.javasimon.SimonManager; 024import org.javasimon.SimonState; 025import org.nuxeo.runtime.model.ComponentContext; 026import org.nuxeo.runtime.model.DefaultComponent; 027 028/** 029 * Runtime component that provides the {@link CounterManager} service. Uses Simon Counters for implementation 030 * 031 * @author Tiry (tdelprat@nuxeo.com) 032 */ 033public class CounterManagerImpl extends DefaultComponent implements CounterManager { 034 035 public static final String COUNTER_PREFIX = "org.nuxeo"; 036 037 protected CounterHistoryRecorder history = new CounterHistoryRecorder(50); 038 039 public void enableCounters() { 040 SimonManager.getCounter(COUNTER_PREFIX).setState(SimonState.ENABLED, true); 041 } 042 043 public void disableCounters() { 044 SimonManager.getCounter(COUNTER_PREFIX).setState(SimonState.DISABLED, true); 045 } 046 047 @Override 048 public void applicationStarted(ComponentContext context) { 049 // create the root counter 050 SimonManager.getCounter(COUNTER_PREFIX); 051 // register call back for history management 052 SimonManager.callback().addCallback(history); 053 } 054 055 @Override 056 public void decreaseCounter(String counterName) { 057 if (SimonManager.getCounter(counterName).isEnabled()) { 058 SimonManager.getCounter(counterName).decrease(); 059 } 060 } 061 062 @Override 063 public void increaseCounter(String counterName) { 064 if (SimonManager.getCounter(counterName).isEnabled()) { 065 SimonManager.getCounter(counterName).increase(); 066 } 067 } 068 069 @Override 070 public void decreaseCounter(String counterName, long value) { 071 if (SimonManager.getCounter(counterName).isEnabled()) { 072 SimonManager.getCounter(counterName).decrease(value); 073 } 074 } 075 076 @Override 077 public void increaseCounter(String counterName, long value) { 078 if (SimonManager.getCounter(counterName).isEnabled()) { 079 SimonManager.getCounter(counterName).increase(value); 080 } 081 } 082 083 @Override 084 public void setCounterValue(String counterName, long value) { 085 if (SimonManager.getCounter(counterName).isEnabled()) { 086 SimonManager.getCounter(counterName).set(value); 087 } 088 } 089 090 public CounterHistoryStack getCounterHistory(String counterName) { 091 092 CounterHistoryStack stack = history.getCounterHistory(counterName); 093 if (stack == null) { 094 return new CounterHistoryStack(50); 095 } else { 096 return stack; 097 } 098 } 099 100}