/*
* @(#)RMIJRMPServerImpl.java 1.28 05/11/17
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.management.remote.rmi;
import java.io.IOException;
import java.rmi.NoSuchObjectException;
import java.rmi.Remote;
import java.rmi.RemoteException;
import java.rmi.server.RMIClientSocketFactory;
import java.rmi.server.RMIServerSocketFactory;
import java.rmi.server.UnicastRemoteObject;
import java.rmi.server.RemoteObject;
import java.util.Map;
import java.util.Collections;
import javax.security.auth.Subject;
import com.sun.jmx.remote.internal.RMIExporter;
/**
* <p>An {@link RMIServer} object that is exported through JRMP and that
* creates client connections as RMI objects exported through JRMP.
* User code does not usually reference this class directly.</p>
*
* @see RMIServerImpl
*
* @since 1.5
* @since.unbundled 1.0
*/
public class RMIJRMPServerImpl extends RMIServerImpl {
/**
* <p>Creates a new {@link RMIServer} object that will be exported
* on the given port using the given socket factories.</p>
*
* @param port the port on which this object and the {@link
* RMIConnectionImpl} objects it creates will be exported. Can be
* zero, to indicate any available port.
*
* @param csf the client socket factory for the created RMI
* objects. Can be null.
*
* @param ssf the server socket factory for the created RMI
* objects. Can be null.
*
* @param env the environment map. Can be null.
*
* @exception IOException if the {@link RMIServer} object
* cannot be created.
*
* @exception IllegalArgumentException if <code>port</code> is
* negative.
*/
public RMIJRMPServerImpl(int port,
RMIClientSocketFactory csf,
RMIServerSocketFactory ssf,
Map<String,?> env)
throws IOException {
super(env);
if (port < 0)
throw new IllegalArgumentException("Negative port: " + port);
this.port = port;
this.csf = csf;
this.ssf = ssf;
this.env = (env == null) ? Collections.EMPTY_MAP : env;
}
protected void export() throws IOException {
export(this);
}
private void export(Remote obj) throws RemoteException {
RMIExporter exporter =
(RMIExporter) env.get(RMIExporter.EXPORTER_ATTRIBUTE);
if (exporter == null)
UnicastRemoteObject.exportObject(obj, port, csf, ssf);
else
exporter.exportObject(obj, port, csf, ssf);
}
private void unexport(Remote obj, boolean force)
throws NoSuchObjectException {
RMIExporter exporter =
(RMIExporter) env.get(RMIExporter.EXPORTER_ATTRIBUTE);
if (exporter == null)
UnicastRemoteObject.unexportObject(obj, force);
else
exporter.unexportObject(obj, force);
}
protected String getProtocol() {
return "rmi";
}
/**
* <p>Returns a serializable stub for this {@link RMIServer} object.</p>
*
* @return a serializable stub.
*
* @exception IOException if the stub cannot be obtained - e.g the
* RMIJRMPServerImpl has not been exported yet.
*/
public Remote toStub() throws IOException {
return RemoteObject.toStub(this);
}
/**
* <p>Creates a new client connection as an RMI object exported
* through JRMP. The port and socket factories for the new
* {@link RMIConnection} object are the ones supplied
* to the <code>RMIJRMPServerImpl</code> constructor.</p>
*
* @param connectionId the ID of the new connection. Every
* connection opened by this connector server will have a
* different id. The behavior is unspecified if this parameter is
* null.
*
* @param subject the authenticated subject. Can be null.
*
* @return the newly-created <code>RMIConnection</code>.
*
* @exception IOException if the new {@link RMIConnection}
* object cannot be created or exported.
*/
protected RMIConnection makeClient(String connectionId, Subject subject)
throws IOException {
if (connectionId == null)
throw new NullPointerException("Null connectionId");
RMIConnection client =
new RMIConnectionImpl(this, connectionId, getDefaultClassLoader(),
subject, env);
export(client);
return client;
}
protected void closeClient(RMIConnection client) throws IOException {
unexport(client, true);
}
/**
* <p>Called by {@link #close()} to close the connector server by
* unexporting this object. After returning from this method, the
* connector server must not accept any new connections.</p>
*
* @exception IOException if the attempt to close the connector
* server failed.
*/
protected void closeServer() throws IOException {
unexport(this, true);
}
private final int port;
private final RMIClientSocketFactory csf;
private final RMIServerSocketFactory ssf;
private final Map env;
}