001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common Development
008: * and Distribution License("CDDL") (collectively, the "License"). You
009: * may not use this file except in compliance with the License. You can obtain
010: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
011: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
012: * language governing permissions and limitations under the License.
013: *
014: * When distributing the software, include this License Header Notice in each
015: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
016: * Sun designates this particular file as subject to the "Classpath" exception
017: * as provided by Sun in the GPL Version 2 section of the License file that
018: * accompanied this code. If applicable, add the following below the License
019: * Header, with the fields enclosed by brackets [] replaced by your own
020: * identifying information: "Portions Copyrighted [year]
021: * [name of copyright owner]"
022: *
023: * Contributor(s):
024: *
025: * If you wish your version of this file to be governed by only the CDDL or
026: * only the GPL Version 2, indicate your decision by adding "[Contributor]
027: * elects to include this software in this distribution under the [CDDL or GPL
028: * Version 2] license." If you don't indicate a single choice of license, a
029: * recipient has the option to distribute your version of this file under
030: * either the CDDL, the GPL Version 2 or to extend the choice of license to
031: * its licensees as provided above. However, if you add GPL Version 2 code
032: * and therefore, elected the GPL Version 2 license, then the option applies
033: * only if the new code is made subject to such option by the copyright
034: * holder.
035: */
036:
037: /*
038: * ConnectionUtilities.java
039: */
040:
041: package com.sun.jbi.jsf.util;
042:
043: import com.sun.enterprise.admin.common.MBeanServerFactory;
044: import com.sun.jbi.ui.client.JBIAdminCommandsClientFactory;
045: import com.sun.jbi.ui.common.JBIAdminCommands;
046: import java.util.HashMap;
047: import java.util.Map;
048: import java.util.Properties;
049: import java.util.logging.Logger;
050: import javax.management.MBeanServerConnection;
051:
052: /**
053: *
054: * Utilities supporting a JBI administration common client JMX connection
055: *
056: **/
057:
058: public final class ConnectionUtilities {
059: /**
060: * Controls printing of diagnostic messages to the log
061: */
062: private static Logger sLog = JBILogger.getInstance();
063:
064: /**
065: * obtains a JBI Administration Common Client
066: * @return <code>JBIAdminCommands -</code> an implementation of the client interface
067: * using a client connected connected to the local JBI runtime.
068: */
069: public JBIAdminCommands getClient() {
070: JBIAdminCommands result = null;
071:
072: // check for cached copy
073: if (null != mJac) {
074: result = mJac;
075: }
076: // no cached copy, try to find a client
077: else {
078:
079: mJac = tryLocalClient();
080: result = mJac; // cache connection (or null, if none)
081: }
082:
083: sLog.fine("ConnectionUtilities.getClient(), result=" + result);
084: return result;
085: }
086:
087: /**
088: * tries to obtain a local JBI Administration Common Client
089: * @return <code>JBIAdminCommands -</code> an implementation of the client interface
090: * using a client connected to the local JBI runtime.
091: */
092: private JBIAdminCommands tryLocalClient() {
093: JBIAdminCommands result = null;
094:
095: MBeanServerConnection defaultConnection = MBeanServerFactory
096: .getMBeanServer();
097:
098: if (null != defaultConnection) {
099: try {
100: final boolean DEFAULT_CONNECTION_REMOTE_FLAG = false;
101: result = JBIAdminCommandsClientFactory.getInstance(
102: defaultConnection,
103: DEFAULT_CONNECTION_REMOTE_FLAG);
104: if ((null != result) && (result.isJBIRuntimeEnabled())) {
105: sLog
106: .fine("ConnectionUtilities.tryLocalClient(): local client found JBI runtime enabled");
107: }
108: } catch (Exception ex) {
109: sLog
110: .fine("ConnectionUtilities.tryLocalClient(): caught ex="
111: + ex);
112: ex.printStackTrace(System.err);
113: }
114: }
115:
116: sLog.fine("ConnectionUtilities.tryLocalClient(), result="
117: + result);
118: return result;
119: }
120:
121: /**
122: * cached reference to a local JBI Administration common client.
123: */
124: private JBIAdminCommands mJac = null;
125: }
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