coral.RessyncServable.java Source code

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Here is the source code for coral.RessyncServable.java

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/*
 *   Copyright 2009-2015 Markus Schaffner
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
package coral;

/*******************************************************************************
 * Copyright (c) 2009 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

// Platform.resolve(plugin.getBundle().getEntry(".")).toString(); 

/*
 * Browser example snippet: Render HTML from memory in response to a link click.
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */

import java.io.File;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.BlockingQueue;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import any.Linker;
import any.model.Message;
import any.model.Servable;
import coral.utils.CoralUtils;

public class RessyncServable implements Servable {

    protected final Log logger = LogFactory.getLog(this.getClass());

    //   private BlockingQueue<Message> queue;
    private File res;

    @Override
    public void init(Properties properties, BlockingQueue<Message> loopQueue, Linker linker) {

        res = new File(properties.getProperty("coral.polyp.res", "res/"));
        if (!res.exists()) {
            res.mkdirs();
        }

        logger.debug("ready");

    }

    /**
     * check if the file needs to be updated, if yes, send out a get request
     */
    @Override
    public void process(Message cmd, BlockingQueue<Message> outQueue) {
        if (cmd == null) {
            //         queue = outQueue;
        } else {

            String filename = cmd.getContent();

            if (logger.isDebugEnabled()) {
                logger.debug("check  " + filename + " - " + cmd.getFullContent());
            }

            Map<String, String> q = CoralUtils.urlToMap(cmd.getFullContent());

            if (logger.isDebugEnabled()) {
                logger.debug("check map " + q.toString());
            }

            final File file = new File(res, filename);

            logger.debug("check file " + file.getAbsolutePath());

            boolean request = false;
            if (file.exists()) {
                long version = file.lastModified();

                long expectedVersion = Long.parseLong(q.get("version"));

                if (expectedVersion > version) {
                    request = true;
                }
            } else {
                request = true;
            }

            if (request) {
                outQueue.add(new Message(q.get("synccmd"), new byte[] {}));
            }
        }
    }

    @Override
    public void disconnect(BlockingQueue<Message> outQueue) {
        // default, ignore 
    }

}