Monitor.java

/**
 * Copyright (c) 2014 Richard Warburton (richard.warburton@gmail.com)
 * <p>
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 * <p>
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 * <p>
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 **/
package com.insightfullogic.honest_profiler.core;

import static org.slf4j.LoggerFactory.getLogger;

import com.insightfullogic.honest_profiler.core.collector.LogCollector;
import com.insightfullogic.honest_profiler.core.collector.lean.LeanLogCollector;
import com.insightfullogic.honest_profiler.core.parser.LogEventListener;
import com.insightfullogic.honest_profiler.core.parser.LogParser;
import com.insightfullogic.honest_profiler.core.profiles.ProfileListener;
import com.insightfullogic.honest_profiler.core.profiles.lean.LeanProfileListener;
import com.insightfullogic.honest_profiler.core.sources.LogSource;

/**
 * Application Service for monitoring logs
 */
public final class Monitor
{

    private Monitor()
    {
        // utility class
    }

    // TODO: have a way of stopping the agent correctly
    public static void pipeFile(final LogSource logSource, final ProfileListener listener)
    {
        ProfileUpdateModerator moderator = new ProfileUpdateModerator(
            getLogger(ProfileUpdateModerator.class),
            listener);
        moderator.start();

        final Conductor conductor = pipe(logSource, moderator, true);
        new ThreadedAgent(getLogger(ThreadedAgent.class), conductor::poll).start();
    }

    public static void pipeFile(final LogSource logSource, LeanLogCollector logCollector,
        final LeanProfileListener listener)
    {
        final Conductor conductor = pipe(logSource, logCollector, true);
        new ThreadedAgent(getLogger(ThreadedAgent.class), conductor::poll).start();
    }

    public static void consumeFile(final LogSource logSource, final ProfileListener listener)
    {
        pipe(logSource, listener, false).run();
    }

    public static void consumeFile(final LogSource logSource, final LogEventListener listener)
    {
        pipe(logSource, listener, false).run();
    }

    private static Conductor pipe(final LogSource logSource, final ProfileListener listener,
        final boolean continuous)
    {
        LogEventListener collector = new LogCollector(listener, continuous);
        return pipe(logSource, collector, continuous);
    }

    public static Conductor pipe(final LogSource logSource, LogEventListener listener,
        final boolean continuous)
    {
        LogParser parser = new LogParser(getLogger(LogParser.class), listener);
        return new Conductor(getLogger(Conductor.class), logSource, parser, continuous);
    }

}