Java tutorial
/* * IronJacamar, a Java EE Connector Architecture implementation * Copyright 2012, Red Hat Inc, and individual contributors * as indicated by the @author tags. See the copyright.txt file in the * distribution for a full listing of individual contributors. * * This 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 2.1 of * the License, or (at your option) any later version. * * This software 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 software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.jboss.jca.eclipse.command; import org.jboss.jca.eclipse.Activator; import org.jboss.jca.eclipse.preferences.PreferenceConstants; import java.io.ByteArrayOutputStream; import java.io.Closeable; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.io.Serializable; import java.net.InetAddress; import java.net.Socket; import java.net.UnknownHostException; import org.eclipse.core.resources.IFile; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.jface.preference.IPreferenceStore; /** * The deploy helper used to deploy rar to IronJacamar. * * @author <a href="mailto:lgao@redhat.com">Lin Gao</a> */ public class IronJacamarDeployHelper { /** * The constructor. */ public IronJacamarDeployHelper() { super(); } /** * Deploy file to IronJacamar server. * * @param file The file to be deployed * @param monitor the IProgressMonitor * @return true if the deployment succeeds, false otherwise * @throws UnknownHostException on unknown host * @throws IOException on any I/O exception * @throws ClassNotFoundException on any class path exception * @throws Throwable on failure of deployment */ public boolean deploy(IFile file, IProgressMonitor monitor) throws UnknownHostException, IOException, ClassNotFoundException, Throwable { String msg = "Deploy " + file.getName() + " to IronJacamar server."; monitor.subTask(msg); Socket socket = null; ObjectOutputStream output = null; ObjectInputStream input = null; try { socket = connectToServer(); output = new ObjectOutputStream(socket.getOutputStream()); sendCommand(output, file); output.flush(); input = new ObjectInputStream(socket.getInputStream()); Serializable result = (Serializable) input.readObject(); if (result instanceof Throwable) { throw (Throwable) result; } else if (result instanceof Boolean) { return (Boolean) result; } throw new IllegalStateException("Wrong type of return value: " + result); } finally { close(input); close(output); if (socket != null) { socket.close(); } } } /** * Sends deploy command to IronJacamar server. * * @param output the OutputStream retrieved from connected Socket. * @param file the RAR file which needs to be deployed. * @throws IOException on any I/O exception */ private void sendCommand(ObjectOutputStream output, IFile file) throws IOException { if (isLocalIronJacamar()) { output.writeUTF("local-deploy"); output.writeInt(1); output.writeObject(file.getLocationURI().toURL()); } else { output.writeUTF("remote-deploy"); output.writeInt(2); output.writeObject(file.getName()); byte[] fileContent = readRarFileContent(file); output.writeObject(fileContent); } } /** * Checks whether current IronJacamar is located in local machine or remote machine. * * @return true if current IronJacamar is located at local machine, false otherwise. * @throws UnknownHostException on unknown host */ private boolean isLocalIronJacamar() throws UnknownHostException { String ijHost = getRemoteIronJacamarHost(); InetAddress ijAddr = InetAddress.getByName(ijHost); if (ijAddr.isLoopbackAddress()) { return true; } String localHostName = InetAddress.getLocalHost().getHostName(); if (localHostName.equals(ijHost)) { return true; } String ijIP = ijAddr.getHostAddress(); InetAddress localIPs[] = InetAddress.getAllByName(localHostName); for (InetAddress localIP : localIPs) { if (ijIP.equals(localIP.getHostAddress())) { return true; } } return false; } /** * Connects to remote IronJacamar server * * @return the Socket which represents the connection * @throws UnknownHostException on unknown host * @throws IOException on any I/O exception */ private Socket connectToServer() throws UnknownHostException, IOException { String host = getRemoteIronJacamarHost(); int port = getRemoteIronJacamarPort(); return new Socket(host, port); } /** * Closes the Closeable. * * @param closeable the Closeable * @throws IOException on any I/O exception */ private void close(Closeable closeable) throws IOException { if (null != closeable) { closeable.close(); } } /** * Reads file content to a byte array. * * @param ifile the file * @return byte array * @throws IOException on any I/O exception */ private byte[] readRarFileContent(IFile ifile) throws IOException { File file = ifile.getLocation().toFile(); InputStream in = null; ByteArrayOutputStream output = new ByteArrayOutputStream(); try { in = new FileInputStream(file); byte[] buf = new byte[2048]; int readLength = 0; while ((readLength = in.read(buf, 0, buf.length)) > -1) { output.write(buf, 0, readLength); } return output.toByteArray(); } finally { close(in); close(output); } } /** * Gets host of remote IronJacamar. * * @return host of remote IronJacamar or empty string if not set */ public String getRemoteIronJacamarHost() { String host = getPrefenceValue(PreferenceConstants.JCA_REMOTE_HOST); if (host == null || host.length() == 0) { return "localhost"; } return host; } /** * Gets Preference string value by the preference name. * * @param prefName the preference name * @return string value of the preference */ private String getPrefenceValue(String prefName) { IPreferenceStore prefStore = Activator.getDefault().getPreferenceStore(); String value = prefStore.getString(prefName); String deValue = prefStore.getDefaultString(prefName); if (value != null && value.length() > 0) { return value; } return deValue; } /** * Gets port of remote IronJacamar. * * @return port of remote IronJacamar or {@link PreferenceConstants.DEFAULT_PORT} if not set */ public int getRemoteIronJacamarPort() { IPreferenceStore prefStore = Activator.getDefault().getPreferenceStore(); int port = prefStore.getInt(PreferenceConstants.JCA_REMOTE_PORT); if (port == 0) { port = PreferenceConstants.DEFAULT_PORT; } return port; } }