net.sourceforge.vulcan.spring.BuildEventPluginPublisher.java Source code

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Here is the source code for net.sourceforge.vulcan.spring.BuildEventPluginPublisher.java

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/*
 * Vulcan Build Manager
 * Copyright (C) 2005-2012 Chris Eldredge
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
package net.sourceforge.vulcan.spring;

import java.util.ArrayList;
import java.util.List;

import net.sourceforge.vulcan.event.BrokenBuildClaimedEvent;
import net.sourceforge.vulcan.event.BuildCompletedEvent;
import net.sourceforge.vulcan.event.BuildStartingEvent;
import net.sourceforge.vulcan.event.Event;
import net.sourceforge.vulcan.integration.BuildManagerObserverPlugin;
import net.sourceforge.vulcan.integration.MetricsPlugin;

import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;

public class BuildEventPluginPublisher implements ApplicationListener {
    List<BuildManagerObserverPlugin> observers = new ArrayList<BuildManagerObserverPlugin>();

    public void add(BuildManagerObserverPlugin plugin) {
        final boolean isMetrics = plugin.getClass().getAnnotation(MetricsPlugin.class) != null;

        synchronized (observers) {
            if (isMetrics) {
                observers.add(0, plugin);
            } else {
                observers.add(plugin);
            }
        }
    }

    public boolean remove(BuildManagerObserverPlugin plugin) {
        synchronized (observers) {
            return observers.remove(plugin);
        }
    }

    public void onApplicationEvent(ApplicationEvent springEvent) {
        if (!(springEvent instanceof EventBridge)) {
            return;
        }
        final Event event = ((EventBridge) springEvent).getEvent();

        final BuildStartingEvent buildStartingEvent;
        final BuildCompletedEvent buildCompletedEvent;
        final BrokenBuildClaimedEvent brokenBuildClaimedEvent;

        if (event instanceof BuildStartingEvent) {
            buildStartingEvent = (BuildStartingEvent) event;
            buildCompletedEvent = null;
            brokenBuildClaimedEvent = null;
        } else if (event instanceof BuildCompletedEvent) {
            buildCompletedEvent = (BuildCompletedEvent) event;
            buildStartingEvent = null;
            brokenBuildClaimedEvent = null;
        } else if (event instanceof BrokenBuildClaimedEvent) {
            brokenBuildClaimedEvent = (BrokenBuildClaimedEvent) event;
            buildStartingEvent = null;
            buildCompletedEvent = null;
        } else {
            return;
        }

        final List<BuildManagerObserverPlugin> copy;
        synchronized (observers) {
            copy = new ArrayList<BuildManagerObserverPlugin>(observers);
        }

        for (BuildManagerObserverPlugin plugin : copy) {
            if (buildStartingEvent != null) {
                plugin.onBuildStarting(buildStartingEvent);
            } else if (buildCompletedEvent != null) {
                plugin.onBuildCompleted(buildCompletedEvent);
            } else {
                plugin.onBrokenBuildClaimed(brokenBuildClaimedEvent);
            }
        }
    }
}