/*
* Copyright 2008 the original author or authors.
*
* Licensed 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 bean.client;
import bean.Hello;
import net.jini.core.lookup.ServiceItem;
import net.jini.core.lookup.ServiceTemplate;
import net.jini.discovery.LookupDiscoveryManager;
import net.jini.lease.LeaseRenewalManager;
import net.jini.lookup.ServiceDiscoveryManager;
import java.rmi.RMISecurityManager;
import java.security.Permission;
public class HelloClient {
/*
* This is for ease of use, for the invocation of the example. When
* deploying outside of the example, this should be removed
*/
static {
System.setSecurityManager(new RMISecurityManager() {
public void checkPermission(Permission perm) {
}
});
}
public static void main(String[] args) throws Exception {
Class[] classes = new Class[]{bean.Hello.class};
ServiceTemplate tmpl = new ServiceTemplate(null, classes, null);
LookupDiscoveryManager ldm =
new LookupDiscoveryManager(LookupDiscoveryManager.ALL_GROUPS,
null,
null);
System.out.println("Discovering Hello service ...");
ServiceDiscoveryManager sdm =
new ServiceDiscoveryManager(ldm, new LeaseRenewalManager());
/* Wait no more then 10 seconds to discover the service */
ServiceItem item = sdm.lookup(tmpl, null, 10000);
if(item != null) {
System.out.println("Discovered Hello service");
Hello hello = (Hello)item.service;
System.out.println("Invoking Hello service ...");
String ret = hello.hello("Hello from Client");
System.out.println("Received: "+ret+" from Hello service");
} else {
System.out.println("Hello service not discovered, make sure "+
"service is deployed");
}
sdm.terminate();
}
}