com.prototype.utils.IndexChangeListenerImpl.java Source code

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Here is the source code for com.prototype.utils.IndexChangeListenerImpl.java

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package com.prototype.utils;

import java.io.File;
import org.apache.commons.io.monitor.FileAlterationListener;
import org.apache.commons.io.monitor.FileAlterationObserver;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.prototype.app.ResponseController;
import com.prototype.client.StompMessageClient;

/*
 * Copyright 2014 the original author or authors.
 *
 * 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.
 */

/**
 * 
 * @author mweigel
 *
 *         A listener class with methods that are invoked when when Linux file
 *         events occur
 */
public class IndexChangeListenerImpl implements FileAlterationListener {
    private static final Logger LOGGER = LoggerFactory.getLogger(IndexChangeListenerImpl.class);
    private final StompMessageClient client;

    /**
     * The single parameterized constructor
     * 
     * @param client
     *            - An instance of a StompMessageClient
     */
    public IndexChangeListenerImpl(StompMessageClient client) {
        this.client = client;
    }

    /**
     * The onStart method is called when FileAlterationObserver is started
     */
    @Override
    public void onStart(final FileAlterationObserver observer) {
        //LOGGER.info("onStart() called because FileAlterationObserver started");
    }

    /**
     * The onDirectoryCreate is called when a directory is created
     */
    @Override
    public void onDirectoryCreate(final File directory) {
        try {
            String msg = "Directory - " + directory.getName() + " was created";
            LOGGER.info("onDirectoryCreate() " + msg);
            client.sendMessage(msg);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * The onDirectoryChange method is called when a directory is changed
     */
    @Override
    public void onDirectoryChange(final File directory) {
        try {
            String msg = "Directory - " + directory.getName() + " was changed";
            LOGGER.info("onDirectoryChange() " + msg);
            client.sendMessage(msg);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * The onDirectoryDelete method is called when a directory is deleted
     */
    @Override
    public void onDirectoryDelete(final File directory) {
        try {
            String msg = "Directory - " + directory.getName() + " was deleted";
            LOGGER.info("onDirectoryDelete() " + msg);
            client.sendMessage(msg);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * The onFileCreate method is called when a file is created
     */
    @Override
    public void onFileCreate(final File file) {
        try {
            String msg = "File - " + file.getName() + " was created";
            LOGGER.info("onFileCreate() " + msg);
            client.sendMessage(msg);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * The onFileChange method is called when a file is changed
     */
    @Override
    public void onFileChange(final File file) {
        try {
            String msg = "File - " + file.getName() + " was changed";
            LOGGER.info("onFileChange() " + msg);
            client.sendMessage(msg);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * The onFileDelete method is called when a file is deleted
     */
    @Override
    public void onFileDelete(final File file) {
        try {
            String msg = "File - " + file.getName() + " was deleted";
            LOGGER.info("onFileDelete() " + msg);
            client.sendMessage(msg);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * The onStop method is called when the FileAlterationObserver is stopped
     */
    @Override
    public void onStop(final FileAlterationObserver observer) {
        //LOGGER.info("onStop() called because FileAlterationObserver stopped");
    }
}