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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.corba.jse;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.tuscany.sca.core.LifeCycleListener;
import org.apache.tuscany.sca.host.corba.CorbaHost;
import org.apache.tuscany.sca.host.corba.CorbaHostException;
import org.apache.tuscany.sca.host.corba.CorbaHostUtils;
import org.apache.tuscany.sca.host.corba.CorbanameURL;
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CosNaming.NameComponent;
import org.omg.CosNaming.NamingContext;
import org.omg.CosNaming.NamingContextExt;
import org.omg.CosNaming.NamingContextExtHelper;
import org.omg.CosNaming.NamingContextHelper;
import org.omg.CosNaming.NamingContextPackage.InvalidName;
import org.omg.CosNaming.NamingContextPackage.NotFound;
/**
* @version $Rev$ $Date$
* Default implementation of JSE CORBA host
*/
public class DefaultCorbaHost implements CorbaHost, LifeCycleListener {
private static final Logger logger = Logger.getLogger(DefaultCorbaHost.class.getName());
private Map<String, ORB> orbs = new ConcurrentHashMap<String, ORB>();
private void validatePort(int port) throws IllegalArgumentException {
if (port < 1) {
throw new IllegalArgumentException("Port value should be > 0");
}
}
private NamingContextExt getNamingContext(ORB orb, String nameService) throws Exception {
org.omg.CORBA.Object objRef = orb.resolve_initial_references(nameService);
return NamingContextExtHelper.narrow(objRef);
}
private void handleException(Exception e) throws CorbaHostException {
// The cause of the Exception is JDK specific
if (e instanceof NotFound) {
throw new CorbaHostException(CorbaHostException.NO_SUCH_OBJECT, e);
} else if (e instanceof InvalidName) {
throw new CorbaHostException(e);
} else {
throw new CorbaHostException(e);
}
}
public void registerServant(String uri, Object servantObject) throws CorbaHostException {
CorbanameURL details = CorbaHostUtils.getServiceDetails(uri);
ORB orb = createORB(details.getHost(), details.getPort(), false);
try {
NamingContext namingCtx = getNamingContext(orb, details.getNameService());
for (int i = 0; i < details.getNamePath().size() - 1; i++) {
NameComponent nc = new NameComponent(details.getNamePath().get(i), "");
NameComponent[] path = new NameComponent[] {nc};
try {
namingCtx = NamingContextHelper.narrow(namingCtx.resolve(path));
} catch (Exception e) {
namingCtx = namingCtx.bind_new_context(path);
}
}
NameComponent finalName =
new NameComponent(details.getNamePath().get(details.getNamePath().size() - 1), "");
try {
namingCtx.resolve(new NameComponent[] {finalName});
// no exception means that some object is already registered
// under this name, we need to crash here
throw new CorbaHostException(CorbaHostException.BINDING_IN_USE);
} catch (NotFound e) {
namingCtx.bind(new NameComponent[] {finalName}, servantObject);
}
} catch (CorbaHostException e) {
throw e;
} catch (Exception e) {
handleException(e);
}
}
public void unregisterServant(String uri) throws CorbaHostException {
CorbanameURL details = CorbaHostUtils.getServiceDetails(uri);
ORB orb = createORB(details.getHost(), details.getPort(), false);
try {
NamingContextExt namingCtx = getNamingContext(orb, details.getNameService());
namingCtx.unbind(namingCtx.to_name(details.getName()));
} catch (Exception e) {
handleException(e);
}
}
public Object lookup(String uri) throws CorbaHostException {
Object result = null;
try {
CorbanameURL url = new CorbanameURL(uri);
ORB orb = createORB(url.getHost(), url.getPort(), false);
NamingContextExt context = getNamingContext(orb, url.getNameService());
result = context.resolve_str(url.getName());
} catch (Exception e) {
handleException(e);
}
if (result == null) {
throw new CorbaHostException(CorbaHostException.NO_SUCH_OBJECT);
}
return result;
}
public ORB createORB(String host, int port, boolean server) throws CorbaHostException {
validatePort(port);
String key = host + ":" + port;
ORB orb = orbs.get(key);
if (orb != null) {
return orb;
}
// 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.
if (server) {
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};
orb = ORB.init(args, props);
orbs.put(key, orb);
return orb;
}
public void start() {
}
public void stop() {
for (ORB orb : orbs.values()) {
try {
orb.shutdown(true);
orb.destroy();
} catch (Throwable e) {
logger.log(Level.SEVERE, e.getMessage(), e);
}
}
}
}
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