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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.tuscany.sca.host.rmi;
import java.rmi.AlreadyBoundException;
import java.rmi.NotBoundException;
import java.rmi.Remote;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* Default implementation of a RMI host.
*
* @version $Rev$ $Date$
*/
public class DefaultRMIHost implements RMIHost {
//map of RMI registries started and running
private Map<String, Registry> rmiRegistries;
public DefaultRMIHost() {
rmiRegistries = new ConcurrentHashMap<String, Registry>();
/*
* if (System.getSecurityManager() == null) { System.setSecurityManager(new RMISecurityManager()); }
*/
}
public void registerService(String serviceName, int port, Remote serviceObject) throws RMIHostException,
RMIHostRuntimeException {
Registry registry;
try {
registry = rmiRegistries.get(Integer.toString(port));
if (registry == null) {
try {
registry = LocateRegistry.getRegistry(port);
registry.list();
} catch (RemoteException e) {
registry = LocateRegistry.createRegistry(port);
}
rmiRegistries.put(Integer.toString(port), registry);
}
registry.bind(serviceName, serviceObject);
} catch (AlreadyBoundException e) {
throw new RMIHostException(e);
} catch (RemoteException e) {
RMIHostRuntimeException rmiExec = new RMIHostRuntimeException(e.getMessage());
rmiExec.setStackTrace(e.getStackTrace());
throw rmiExec;
}
}
public void registerService(String serviceName, Remote serviceObject) throws RMIHostException,
RMIHostRuntimeException {
registerService(serviceName, RMI_DEFAULT_PORT, serviceObject);
}
public void unregisterService(String serviceName, int port) throws RMIHostException, RMIHostRuntimeException {
Registry registry;
try {
registry = rmiRegistries.get(Integer.toString(port));
if (registry == null) {
registry = LocateRegistry.getRegistry(port);
rmiRegistries.put(Integer.toString(port), registry);
}
registry.unbind(serviceName);
} catch (RemoteException e) {
RMIHostRuntimeException rmiExec = new RMIHostRuntimeException(e.getMessage());
rmiExec.setStackTrace(e.getStackTrace());
throw rmiExec;
} catch (NotBoundException e) {
throw new RMIHostException(e.getMessage());
}
}
public void unregisterService(String serviceName) throws RMIHostException, RMIHostRuntimeException {
unregisterService(serviceName, RMI_DEFAULT_PORT);
}
public Remote findService(String host, String port, String svcName) throws RMIHostException,
RMIHostRuntimeException {
Registry registry;
Remote remoteService = null;
host = (host == null || host.length() <= 0) ? "localhost" : host;
int portNumber = (port == null || port.length() <= 0) ? RMI_DEFAULT_PORT : Integer.decode(port);
try {
// Requires permission java.net.SocketPermission "host:port", "connect,accept,resolve"
// in security policy.
registry = LocateRegistry.getRegistry(host, portNumber);
if (registry != null) {
remoteService = registry.lookup(svcName);
}
} catch (RemoteException e) {
RMIHostRuntimeException rmiExec = new RMIHostRuntimeException(e.getMessage());
rmiExec.setStackTrace(e.getStackTrace());
throw rmiExec;
} catch (NotBoundException e) {
throw new RMIHostException(e.getMessage());
}
return remoteService;
}
}
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