org.obm.breakdownduration.BreakdownDurationInterceptor.java Source code

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Here is the source code for org.obm.breakdownduration.BreakdownDurationInterceptor.java

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/* ***** BEGIN LICENSE BLOCK *****
 * 
 * Copyright (C) 2014 Linagora
 *
 * This program is free software: you can redistribute it and/or 
 * modify it under the terms of the GNU Affero General Public License as 
 * published by the Free Software Foundation, either version 3 of the 
 * License, or (at your option) any later version, provided you comply 
 * with the Additional Terms applicable for OBM connector by Linagora 
 * pursuant to Section 7 of the GNU Affero General Public License, 
 * subsections (b), (c), and (e), pursuant to which you must notably (i) retain 
 * the Message sent thanks to OBM, Free Communication by Linagora? 
 * signature notice appended to any and all outbound messages 
 * (notably e-mail and meeting requests), (ii) retain all hypertext links between 
 * OBM and obm.org, as well as between Linagora and linagora.com, and (iii) refrain 
 * from infringing Linagora intellectual property rights over its trademarks 
 * and commercial brands. Other Additional Terms apply, 
 * see <http://www.linagora.com/licenses/> for more details. 
 *
 * This program is distributed in the hope that it will be useful, 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License 
 * for more details. 
 *
 * You should have received a copy of the GNU Affero General Public License 
 * and its applicable Additional Terms for OBM along with this program. If not, 
 * see <http://www.gnu.org/licenses/> for the GNU Affero General Public License version 3 
 * and <http://www.linagora.com/licenses/> for the Additional Terms applicable to 
 * OBM connectors. 
 * 
 * ***** END LICENSE BLOCK ***** */
package org.obm.breakdownduration;

import java.lang.reflect.Method;
import java.util.concurrent.TimeUnit;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.obm.breakdownduration.bean.Watch;

import com.google.common.base.Stopwatch;
import com.google.inject.Inject;

public class BreakdownDurationInterceptor implements MethodInterceptor {

    @Inject
    BreakdownDurationLoggerService breakdownLogger;

    @Override
    public Object invoke(MethodInvocation methodInvocation) throws Throwable {
        Watch watch = getClassAnnotation(methodInvocation);
        if (watch == null) {
            return methodInvocation.proceed();
        }

        Stopwatch stopwatch = Stopwatch.createStarted();
        try {
            breakdownLogger.startRecordingNode(watch.value());
            return methodInvocation.proceed();
        } finally {
            breakdownLogger.endRecordingNode(stopwatch.stop().elapsed(TimeUnit.MILLISECONDS));
        }
    }

    private Watch getClassAnnotation(MethodInvocation methodInvocation) {
        Method method = methodInvocation.getMethod();

        Class<?> declaringClass = method.getDeclaringClass();
        if (declaringClass.isAnnotationPresent(Watch.class)) {
            return declaringClass.getAnnotation(Watch.class);
        }
        return null;
    }
}