org.obm.breakdownduration.BreakdownDurationFilter.java Source code

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

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/* ***** BEGIN LICENSE BLOCK *****
 * 
 * Copyright (C) 2011-2014  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.io.IOException;
import java.util.concurrent.TimeUnit;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Stopwatch;
import com.google.inject.Inject;
import com.google.inject.Singleton;

@Singleton
public class BreakdownDurationFilter implements Filter {

    private static final String GROUP_REQUEST = "REQUEST";
    private final BreakdownDurationLoggerService breakdownDurationLoggerService;

    @Inject
    @VisibleForTesting
    BreakdownDurationFilter(BreakdownDurationLoggerService breakdownDurationLoggerService) {
        this.breakdownDurationLoggerService = breakdownDurationLoggerService;
    }

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {

        Stopwatch stopwatch = Stopwatch.createStarted();
        try {
            startRecordingRequest();
            chain.doFilter(request, response);
        } finally {
            endRecordingRequest(stopwatch);
        }
    }

    private void startRecordingRequest() {
        breakdownDurationLoggerService.enableRecording();
        breakdownDurationLoggerService.startRecordingNode(GROUP_REQUEST);
    }

    private void endRecordingRequest(Stopwatch stopwatch) {
        try {
            breakdownDurationLoggerService.endRecordingNode(stopwatch.elapsed(TimeUnit.MILLISECONDS));
            breakdownDurationLoggerService.disableRecording();
            breakdownDurationLoggerService.log();
        } finally {
            breakdownDurationLoggerService.cleanSession();
        }
    }

    @Override
    public void destroy() {
    }
}