org.coos.messaging.COOSBootstrap Maven / Gradle / Ivy

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/**
 * COOS - Connected Objects Operating System (www.connectedobjects.org).
 *
 * Copyright (C) 2009 Telenor ASA and Tellu AS. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see .
 *
 * You may also contact one of the following for additional information:
 * Telenor ASA, Snaroyveien 30, N-1331 Fornebu, Norway (www.telenor.no)
 * Tellu AS, Hagalokkveien 13, N-1383 Asker, Norway (www.tellu.no)
 */
package org.coos.messaging;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import org.coos.util.macro.MacroSubstituteReader;

/**
 * A Bootstrap class to be used in standalone environments
 * 
 * @author Knut Eilif Husa, Tellu AS
 */
public class COOSBootstrap implements COContainer {

	private final static String COOS_CONFIG_DIR = "configDir";
	private final static String DEFAULT_COOS_CONFIG_DIR = "./coosConfig";
	private static final String COOS_CONFIG_PATH = "/org/coos/config";
	private static String configDir;

	/**
	 * @param args
	 * @throws Exception
	 */
	public static void main(String[] args) throws Exception {
		configDir = DEFAULT_COOS_CONFIG_DIR;
		for (int i = 0; i < args.length; i++) {
			if (args[0].startsWith(COOS_CONFIG_DIR)) {
				configDir = args[0].substring(args[0].indexOf('=')).trim();
			}
			if (args[0].equals("?")) {
				System.out
						.println("Usage: java org.coos.messaging.COOSBootstrap [configDir=]");
				System.out.println("Configuration directory contains either coos.xml or plugin.xml or both.");
				System.out
						.println("If configuration directory contains coos.xml it will override the default coos configuration.]");
				System.out
						.println("If configuration directory contains plugin.xml it will be added to the default plugin configuration for the coos instance.");
				System.out.println("Notice: You have to provide the classes used by the plugin on the classpath.");
				return;
			}
		}
		COOSBootstrap bs = new COOSBootstrap();
		COOSBootstrapHelper.startCOOS(configDir, bs);
		COOSBootstrapHelper.startPlugins(configDir, bs);
	}

	public Object getObject(String name) {
		return null;
	}

	public InputStream getResource(String resourceName) throws IOException {
		InputStream is = null;
		try {
			File file = new File(configDir + resourceName);
			is = file.toURI().toURL().openStream();
			is = substitute(is);
		} catch (Exception e) {
		}

		// if it is not overridden, use the provided file
		if (is == null) {
			is = this.getClass().getResourceAsStream(COOS_CONFIG_PATH + resourceName);
			is = substitute(is);
		}
		return is;
	}

	public Class loadClass(String className) throws ClassNotFoundException {
		return Class.forName(className);
	}

	private InputStream substitute(InputStream is) throws IOException {
		InputStreamReader isr = new InputStreamReader(is);
		MacroSubstituteReader msr = new MacroSubstituteReader(isr);
		String substituted = msr.substituteMacros();
		is = new ByteArrayInputStream(substituted.getBytes());
		return is;
	}

}