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

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Here is the source code for net.sourceforge.vulcan.spring.SpringEventPool.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.Collections;
import java.util.List;

import net.sourceforge.vulcan.event.Event;
import net.sourceforge.vulcan.event.EventPool;
import net.sourceforge.vulcan.event.EventType;

import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.jmx.export.annotation.ManagedAttribute;
import org.springframework.jmx.export.annotation.ManagedOperation;
import org.springframework.jmx.export.annotation.ManagedOperationParameter;
import org.springframework.jmx.export.annotation.ManagedOperationParameters;
import org.springframework.jmx.export.annotation.ManagedResource;

@ManagedResource(objectName = "vulcan:name=eventPool")
public final class SpringEventPool implements EventPool, ApplicationListener {
    List<Event> events = new ArrayList<Event>();
    int maxSize = 20;

    @ManagedOperation
    @ManagedOperationParameters({ @ManagedOperationParameter(name = "type", description = "") })
    public List<Event> getEvents(String types) {
        final String[] typeStrings = types.split(",");
        final EventType[] eventTypes = new EventType[typeStrings.length];

        for (int i = 0; i < eventTypes.length; i++) {
            eventTypes[i] = EventType.valueOf(typeStrings[i]);
        }

        return getEvents(eventTypes);
    }

    public List<Event> getEvents(EventType type) {
        final List<Event> list = getEvents(new EventType[] { type });

        if (type.equals(EventType.BUILD)) {
            Collections.reverse(list);
        }

        return list;
    }

    public synchronized List<Event> getEvents(EventType... types) {
        List<Event> list = new ArrayList<Event>();

        for (Event e : events) {
            for (EventType t : types) {
                if (t.matches(e)) {
                    list.add(e);
                }
            }
        }

        return list;
    }

    public synchronized void onApplicationEvent(ApplicationEvent event) {
        if (event instanceof EventBridge) {
            if (events.size() == maxSize) {
                events.remove(0);
            }
            events.add(0, ((EventBridge) event).getEvent());
        }
    }

    @ManagedAttribute
    public int getMaxSize() {
        return maxSize;
    }

    @ManagedAttribute(persistPolicy = "onUpdate")
    public synchronized void setMaxSize(int maxSize) {
        this.maxSize = maxSize;

        final int size = events.size();
        if (size > maxSize) {
            events = new ArrayList<Event>(events.subList(0, maxSize));
        }
    }

    @ManagedOperation
    public synchronized void clear() {
        events.clear();
    }
}