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/*___INFO__MARK_BEGIN__*/
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the Sun Industry Standards Source License Version 1.2
*
* Sun Microsystems Inc., March, 2001
*
*
* Sun Industry Standards Source License Version 1.2
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.2 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://gridengine.sunsource.net/Gridengine_SISSL_license.html
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2001 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
************************************************************************/
/*___INFO__MARK_END__*/
package com.sun.grid.jgdi;
import com.sun.grid.jgdi.jni.EventClientImpl;
import com.sun.grid.jgdi.management.JGDIProxy;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.net.MalformedURLException;
import java.util.logging.Logger;
import javax.management.remote.JMXServiceURL;
/**
* Factory class for {@link JGDI} objects.
*
* @see com.sun.grid.jgdi.JGDI
*/
public class JGDIFactory {
private final static Logger log = Logger.getLogger(JGDIFactory.class.getName());
private static String versionString;
private static boolean libNotLoaded = true;
private static synchronized void initLib() throws JGDIException {
if (libNotLoaded) {
try {
System.loadLibrary("jgdi");
libNotLoaded = false;
} catch (Throwable e) {
JGDIException ex = new JGDIException("Can not load native jgdi lib: " + e.getMessage());
// ex.initCause(e); does not work for whatever reason
throw ex;
}
}
}
/**
* Get a new instance of a <code>JGDI</code> object.
*
* @param url JGDI connection url in the form
* <code>bootstrap://<SGE_ROOT>@<SGE_CELL>:<SGE_QMASTER_PORT></code>
* @throws com.sun.grid.jgdi.JGDIException on any error on the GDI layer
* @return the <code>JGDI<code> instance
*/
public static JGDI newInstance(String url) throws JGDIException {
log.entering(JGDIFactory.class.getName(), "newInstance", url);
initLib();
com.sun.grid.jgdi.jni.JGDIImpl ret = new com.sun.grid.jgdi.jni.JGDIImpl();
ret.init(url);
log.exiting(JGDIFactory.class.getName(), "newInstance", ret);
return ret;
}
/**
* Get a synchronized instance of a <code>JGDI</code> object.
*
* @param url JGDI connection url in the form
* <code>bootstrap://<SGE_ROOT>@<SGE_CELL>:<SGE_QMASTER_PORT></code>
* @throws com.sun.grid.jgdi.JGDIException on any error on the GDI layer
* @return the <code>JGDI<code> instance
* @since 0.91
*/
public static JGDI newSynchronizedInstance(String url) throws JGDIException {
return (JGDI) Proxy.newProxyInstance(JGDIFactory.class.getClassLoader(), new Class[]{JGDI.class},
new SynchronJGDIInvocationHandler(newInstance(url)));
}
private static class SynchronJGDIInvocationHandler implements InvocationHandler {
private final JGDI jgdi;
public SynchronJGDIInvocationHandler(JGDI jgdi) {
this.jgdi = jgdi;
}
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
try {
synchronized (jgdi) {
return method.invoke(jgdi, args);
}
} catch (InvocationTargetException ex) {
throw ex.getTargetException();
}
}
}
/**
* Create a new event client which receives events from a jgdi
* connection.
*
* @param url JGDI connection url in the form
* <code>bootstrap://<SGE_ROOT>@<SGE_CELL>:<SGE_QMASTER_PORT></code>
* @param evcId id of the event client (0 mean dynamically assigned)
* @throws com.sun.grid.jgdi.JGDIException
* @return the new event client
*/
public static EventClientImpl createEventClient(String url, int evcId) throws JGDIException {
return new EventClientImpl(url, evcId);
}
/**
* return the jgdi shared library version string, e.g. 'GE maintrunk' or
* 'GE 6.1u1'
* @return the jgdi shared library version string
*/
public static String getJGDIVersion() {
try {
initLib();
} catch (JGDIException ex) {
throw new IllegalStateException(ex.getCause());
}
if (versionString == null) {
versionString = nativeSetJGDIVersion();
}
return versionString;
}
private static native String nativeSetJGDIVersion();
/**
* Create a proxy object to the JGDI MBean.
*
* @param host the qmaster host
* @param port port where qmasters MBeanServer is listening
* @param credentials credentials for authentication
* @return the JGDI Proxy object
*/
public static JGDIProxy newJMXInstance(String host, int port, Object credentials) {
JMXServiceURL url;
try {
url = new JMXServiceURL(String.format("service:jmx:rmi:///jndi/rmi://%s:%d/jmxrmi", host, port));
} catch (MalformedURLException ex) {
throw new IllegalStateException("Invalid JMX url", ex);
}
return new JGDIProxy(url, credentials);
}
}
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