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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.
*/
/**
* @version $Rev$ $Date$
*/
package org.apache.tuscany.sca.host.corba.naming;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Properties;
import org.omg.CORBA.ORB;
import org.omg.CORBA.Policy;
import org.omg.PortableServer.IdAssignmentPolicyValue;
import org.omg.PortableServer.LifespanPolicyValue;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.ServantRetentionPolicyValue;
/**
* A transient name service attached to an ORB. This
* class manages all of the housekeeping for creating a
* TransientNamingContext and a exposing it using an
* ORB.
*/
public class TransientNameService {
// the default registered name service
static public final String DEFAULT_SERVICE_NAME = "TNameService";
// the default listening port
static public final int DEFAULT_SERVICE_PORT = 900;
// the default host name
static public final String DEFAULT_SERVICE_HOST = "localhost";
// the service root context
protected TransientNamingContext initialContext;
// initial listening port
protected int port;
// initial listening host
protected String host;
// the service name (used for registing for the corbaloc:: URL name
protected String serviceName;
// the orb instance we're running on
protected ORB createdOrb;
/**
* Create a new TransientNameService, using all default
* attributes.
*/
public TransientNameService() {
this(DEFAULT_SERVICE_HOST, DEFAULT_SERVICE_PORT, DEFAULT_SERVICE_NAME);
}
/**
* Create a default-named name service using the specified
* host and port parameters.
*
* @param host The host to expose this under.
* @param port The initial listening port.
*/
public TransientNameService(String host, int port) {
this(host, port, DEFAULT_SERVICE_NAME);
}
/**
* Create a specifically-named name service using the specified
* host and port parameters.
*
* @param host The host to expose this under.
* @param port The initial listening port.
* @param name The name to register this service under using the
* BootManager.
*/
public TransientNameService(String host, int port, String name) {
this.port = port;
this.host = host;
this.serviceName = name;
}
/**
* Start up the name service, including creating an
* ORB instance to expose it under.
*
* @exception TransientServiceException
*/
public void run() throws TransientServiceException {
// Create an ORB object
Properties props = new Properties();
props.putAll(System.getProperties());
String portStr = String.valueOf(port);
props.put("org.omg.CORBA.ORBServerId", "1000000");
props.put("org.omg.CORBA.ORBInitialHost", host);
props.put("org.omg.CORBA.ORBInitialPort", portStr);
// STEP 1: Set ORBPeristentServerPort property
// Set the proprietary property to open up a port to listen to
// INS requests.
props.put("com.sun.CORBA.POA.ORBPersistentServerPort", portStr);
props.put("com.ibm.CORBA.ListenerPort", portStr);
props.put("gnu.CORBA.ListenerPort", portStr);
// props.put("org.omg.CORBA.ORBClass", "org.apache.yoko.orb.CORBA.ORB");
// props.put("org.omg.CORBA.ORBSingletonClass", "org.apache.yoko.orb.CORBA.ORBSingleton");
props.put("yoko.orb.oa.endpoint", "iiop --host " + host + " --port " + port);
props.put("yoko.orb.poamanager.TNameService.endpoint", "iiop --host " + host);
String[] args = {"-ORBInitialHost", host, "-ORBInitialPort", "" + port};
createdOrb = ORB.init(args, props);
// now initialize the service
initialize(createdOrb);
}
/**
* Initialize a transient name service on a specific
* ORB.
*
* @param orb The ORB hosting the service.
*
* @exception TransientServiceException
*/
public void initialize(ORB orb) throws TransientServiceException {
try {
// get the root POA. We're going to re
POA rootPOA = (POA)orb.resolve_initial_references("RootPOA");
rootPOA.the_POAManager().activate();
// we need to create a POA to manage this named instance, and then activate
// a context on it.
Policy[] policy = new Policy[3];
policy[0] = rootPOA.create_lifespan_policy(LifespanPolicyValue.TRANSIENT);
policy[1] = rootPOA.create_id_assignment_policy(IdAssignmentPolicyValue.SYSTEM_ID);
policy[2] = rootPOA.create_servant_retention_policy(ServantRetentionPolicyValue.RETAIN);
POA nameServicePOA = rootPOA.create_POA("TNameService", null, policy);
nameServicePOA.the_POAManager().activate();
// create our initial context, and register that with the ORB as the name service
initialContext = new TransientNamingContext(orb, nameServicePOA);
org.omg.CORBA.Object context = initialContext.getRootContext();
Method method =
orb.getClass().getMethod("register_initial_reference", String.class, org.omg.CORBA.Object.class);
method.invoke(orb, serviceName, context);
method.invoke(orb, "NamingService", context);
method.invoke(orb, "NameService", context);
} catch (Exception e) {
throw new TransientServiceException("Unable to initialize name service", e);
}
}
/**
* Destroy the created service.
*/
public void destroy() {
// only destroy this if we created the orb instance.
if (createdOrb != null) {
createdOrb.shutdown(false);
createdOrb.destroy();
try {
// This is a workaround to close the sockets for SUN ORB
Method m = createdOrb.getClass().getMethod("getTransportManager");
Object tm = m.invoke(createdOrb);
m = tm.getClass().getMethod("close");
m.invoke(tm);
m = tm.getClass().getMethod("getAcceptors");
Collection acceptors = (Collection) m.invoke(tm);
for(Object a: acceptors) {
m = a.getClass().getMethod("close");
m.invoke(a);
}
} catch (Throwable e) {
// Ignore
}
createdOrb = null;
}
}
public ORB getORB() {
return createdOrb;
}
}
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