org.nebulaframework.ui.swing.node.GridNodeStarter.java Source code

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Here is the source code for org.nebulaframework.ui.swing.node.GridNodeStarter.java

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/*
 * Copyright (C) 2008 Yohan Liyanage. 
 * 
 * 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 org.nebulaframework.ui.swing.node;

import javax.swing.JOptionPane;
import javax.swing.JWindow;
import javax.swing.UIManager;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.nebulaframework.discovery.DiscoveryFailureException;
import org.nebulaframework.grid.Grid;

/**
 * Execution Point for Swing UI based GridNode.
 * Note that it is possible to start a GridNode
 * with optional {@code -silent} argument, which is 
 * suitable for setting up GridNodes to start up
 * along with the O/S.
 * 
 * @author Yohan Liyanage
 * @version 1.0
 */
public class GridNodeStarter {

    private static final Log log = LogFactory.getLog(GridNodeStarter.class);
    private static boolean silentMode = false;

    /**
     * Starts execution of a ClusterManager instance on the
     * system.
     * <p>
     * Note that it is possible to start a GridNode
     * with optional {@code -silent} argument, which is 
     * suitable for setting up GridNodes to start up
     * along with the O/S.
     * 
     * @param args Command Line Arguments
     */
    public static void main(String[] args) {

        //Log4JConfiguration.configure();

        // Process Arugments
        processArgs(args);

        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Exception e) {
            e.printStackTrace();
        }

        JWindow splash = null;
        if (!silentMode) {
            splash = NodeMainUI.showSplash();
        }

        try {
            Grid.startGridNode();
        } catch (DiscoveryFailureException ex) {
            log.warn("Discovery Failed");
        } catch (Exception e) {

            log.error("Exception while starting", e);
            e.printStackTrace();

            if (!silentMode) {
                splash.setVisible(false);
                JOptionPane.showMessageDialog(null,
                        "Unable to start GridNode due to Exception." + "\nSee StackTrace (log) for details",
                        "Nebula Grid", JOptionPane.ERROR_MESSAGE);
            }

            System.exit(1);
        }

        NodeMainUI ui = NodeMainUI.create();

        // Show if not Silent Mode
        if (!silentMode) {
            splash.setVisible(false);
            splash.dispose();
            ui.setVisible(true);
        }

        log.info("[UI] Initialized");

        if (!Grid.isNode()) {
            log.warn("[GridNode] Not connected to Cluster");
        }
    }

    /**
     * Processes the Command Line Arguments Supplied
     * 
     * @param args agruments
     */
    private static void processArgs(String[] args) {

        // If no args
        if (args.length == 0)
            return;

        // If silent mode
        if (args[0].equals("-silent")) {
            silentMode = true;
        }
    }
}