001/* 002 * (C) Copyright 2010 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 020package org.nuxeo.runtime.management.metrics; 021 022import org.javasimon.SimonManager; 023import org.nuxeo.runtime.model.ComponentContext; 024import org.nuxeo.runtime.model.DefaultComponent; 025import org.osgi.framework.BundleContext; 026 027public class MetricComponent extends DefaultComponent { 028 029 protected final MetricSerializer serializer = new MetricSerializer(); 030 031 protected final MetricEnabler enabler = new MetricEnabler(); 032 033 @Override 034 public <T> T getAdapter(Class<T> adapter) { 035 if (MetricSerializerMXBean.class.isAssignableFrom(adapter)) { 036 return adapter.cast(serializer); 037 } 038 if (MetricEnabler.class.isAssignableFrom(adapter)) { 039 return adapter.cast(enabler); 040 } 041 if (MetricSerializer.class.isAssignableFrom(adapter)) { 042 return adapter.cast(serializer); 043 } 044 return super.getAdapter(adapter); 045 } 046 047 protected final MetricRegister register = new MetricRegister(); 048 049 protected final MetricRegisteringCallback registeringCB = new MetricRegisteringCallback(register); 050 051 @Override 052 public void activate(ComponentContext context) { 053 super.activate(context); 054 doStart(); 055 } 056 057 @Override 058 public void deactivate(ComponentContext context) { 059 doStop(); 060 super.deactivate(context); 061 } 062 063 public void start(BundleContext context) { 064 doStart(); 065 } 066 067 public void stop(BundleContext context) { 068 doStop(); 069 } 070 071 protected void doStart() { 072 enabler.setSerializer(serializer); 073 SimonManager.enable(); 074 SimonManager.callback().addCallback(registeringCB); 075 register.registerMXBean(enabler, "enabler", MetricEnablerMXBean.class, "Feature"); 076 register.registerMXBean(serializer, "serializer", MetricSerializerMXBean.class, "Feature"); 077 } 078 079 protected void doStop() { 080 SimonManager.disable(); 081 if (SimonManager.callback() != null) { 082 SimonManager.callback().removeCallback(registeringCB); 083 } 084 register.unregisterAll(); 085 } 086 087}