List of usage examples for java.rmi Naming lookup
public static Remote lookup(String name) throws NotBoundException, java.net.MalformedURLException, RemoteException
name. From source file:je3.rmi.MudClient.java
/** * The main program. It expects two or three arguments: * 0) the name of the host on which the mud server is running * 1) the name of the MUD on that host * 2) the name of a place within that MUD to start at (optional). * * It uses the Naming.lookup() method to obtain a RemoteMudServer object * for the named MUD on the specified host. Then it uses the getEntrance() * or getNamedPlace() method of RemoteMudServer to obtain the starting * RemoteMudPlace object. It prompts the user for a their name and * description, and creates a MudPerson object. Finally, it passes * the person and the place to runMud() to begin interaction with the MUD. **///w ww . j a v a 2 s . co m public static void main(String[] args) { try { String hostname = args[0]; // Each MUD is uniquely identified by a String mudname = args[1]; // host and a MUD name. String placename = null; // Each place in a MUD has a unique name if (args.length > 2) placename = args[2]; // Look up the RemoteMudServer object for the named MUD using // the default registry on the specified host. Note the use of // the Mud.mudPrefix constant to help prevent naming conflicts // in the registry. RemoteMudServer server = (RemoteMudServer)Naming.lookup("rmi://" + hostname + "/" + Mud.mudPrefix + mudname); // If the user did not specify a place in the mud, use // getEntrance() to get the initial place. Otherwise, call // getNamedPlace() to find the initial place. RemoteMudPlace location = null; if (placename == null) location = server.getEntrance(); else location = (RemoteMudPlace) server.getNamedPlace(placename); // Greet the user and ask for their name and description. // This relies on getLine() and getMultiLine() defined below. System.out.println("Welcome to " + mudname); String name = getLine("Enter your name: "); String description = getMultiLine("Please describe what " + "people see when they look at you:"); // Define an output stream that the MudPerson object will use to // display messages sent to it to the user. We'll use the console. PrintWriter myout = new PrintWriter(System.out); // Create a MudPerson object to represent the user in the MUD. // Use the specified name and description, and the output stream. MudPerson me = new MudPerson(name, description, myout); // Lower this thread's priority one notch so that broadcast // messages can appear even when we're blocking for I/O. This is // necessary on the Linux platform, but may not be necessary on all // platforms. int pri = Thread.currentThread().getPriority(); Thread.currentThread().setPriority(pri-1); // Finally, put the MudPerson into the RemoteMudPlace, and start // prompting the user for commands. runMud(location, me); } // If anything goes wrong, print a message and exit. catch (Exception e) { System.out.println(e); System.out.println("Usage: java MudClient <host> <mud> [<place>]"); System.exit(1); } }
From source file:org.apache.jcs.auxiliary.remote.server.RemoteCacheServerFactory.java
/** * Creates an local RMI registry on the default port, starts up the remote cache server, and * binds it to the registry.//from www . jav a2 s . co m * A remote cache is either a local cache or a cluster cache * @param args The command line arguments * @throws Exception */ public static void main(String[] args) throws Exception { Properties prop = args.length > 0 ? RemoteUtils.loadProps(args[args.length - 1]) : new Properties(); int port; try { port = Integer.parseInt(prop.getProperty("registry.port")); } catch (NumberFormatException ex) { port = Registry.REGISTRY_PORT; } // shutdown if (args.length > 0 && args[0].toLowerCase().indexOf("-shutdown") != -1) { String serviceName = prop.getProperty(REMOTE_CACHE_SERVICE_NAME, REMOTE_CACHE_SERVICE_VAL).trim(); String registry = "//:" + port + "/" + serviceName; if (log.isDebugEnabled()) { log.debug("looking up server " + registry); } Object obj = Naming.lookup(registry); if (log.isDebugEnabled()) { log.debug("server found"); } IRemoteCacheServiceAdmin admin = (IRemoteCacheServiceAdmin) obj; try { admin.shutdown(); } catch (Exception ex) { log.error("Problem calling shutdown.", ex); } log.debug("done."); System.exit(0); } // STATS if (args.length > 0 && args[0].toLowerCase().indexOf("-stats") != -1) { log.debug("getting cache stats"); try { String serviceName = prop.getProperty(REMOTE_CACHE_SERVICE_NAME, REMOTE_CACHE_SERVICE_VAL).trim(); String registry = "//:" + port + "/" + serviceName; log.debug("looking up server " + registry); Object obj = Naming.lookup(registry); log.debug("server found"); log.debug("obj = " + obj); IRemoteCacheServiceAdmin admin = (IRemoteCacheServiceAdmin) obj; try { System.out.println(admin.getStats().toString()); log.debug(admin.getStats()); } catch (Exception es) { log.error(es); } } catch (Exception ex) { log.error("Problem getting stats.", ex); } log.debug("done."); System.exit(0); } // startup. String host = prop.getProperty("registry.host"); if (host == null || host.trim().equals("") || host.trim().equals("localhost")) { log.debug("main> creating registry on the localhost"); port = RemoteUtils.createRegistry(port); } log.debug("main> starting up RemoteCacheServer"); RemoteCacheServerFactory.startup(host, port, args.length > 0 ? args[0] : null); log.debug("main> done"); }
From source file:org.tinygroup.rpc.RMIFactory.java
public Object makeObject() throws Exception { String url = RMIRemoteUtil.getURL(node); CEPCoreRMI rmi = null;//from w ww. j ava2 s .c o m try { rmi = (CEPCoreRMI) Naming.lookup(url); } catch (Exception e) { logger.logMessage(LogLevel.ERROR, "?,{0}:{1}:{2},{3}", node.getIp(), node.getPort(), node.getNodeName(), e.getMessage()); throw new CEPConnectException(e, node); } return rmi; }
From source file:org.speechforge.cairo.server.resource.TransmitterResource.java
public static void main(String[] args) throws Exception { CommandLineParser parser = new GnuParser(); Options options = getOptions();// w ww. j a va2 s. com CommandLine line = parser.parse(options, args, true); args = line.getArgs(); if (args.length != 2 || line.hasOption("help")) { HelpFormatter formatter = new HelpFormatter(); formatter.printHelp("TransmitterResource [options] <cairo-config-URL> <resource-name>", options); return; } URL configURL = CairoUtil.argToURL(args[0]); String resourceName = args[1]; CairoConfig config = new CairoConfig(configURL); TransmitterConfig resourceConfig = config.getTransmitterConfig(resourceName); StringBuilder rmiUrl = new StringBuilder("rmi://"); if (line.hasOption(RSERVERHOST_OPTION)) { rmiUrl.append(line.getOptionValue(RSERVERHOST_OPTION)); } else { rmiUrl.append(CairoUtil.getLocalHost().getHostName()); } rmiUrl.append('/').append(ResourceRegistry.NAME); _logger.info("looking up: " + rmiUrl); ResourceRegistry resourceRegistry = (ResourceRegistry) Naming.lookup(rmiUrl.toString()); TransmitterResource impl = new TransmitterResource(resourceConfig); _logger.info("binding transmitter resource..."); resourceRegistry.register(impl, RESOURCE_TYPE); _logger.info("Resource bound and waiting..."); }
From source file:org.apache.axis.providers.java.RMIProvider.java
/** * Return a object which implements the service. * //from w ww. j a v a 2s . c o m * @param msgContext the message context * @param clsName The JNDI name of the EJB home class * @return an object that implements the service */ protected Object makeNewServiceObject(MessageContext msgContext, String clsName) throws Exception { // Read deployment descriptor options String namingLookup = getStrOption(OPTION_NAMING_LOOKUP, msgContext.getService()); if (System.getSecurityManager() == null) { System.setSecurityManager(new RMISecurityManager()); } Object targetObject = Naming.lookup(namingLookup); return targetObject; }
From source file:Peer.java
/** * The peer constructor./*from w ww.j a va 2 s. c o m*/ */ public Peer(String sp) throws Exception { try { // Initialize of various members pred = null; succ = null; lock = false; // Find the SuperPeer superpeer = (SuperPeerInterface) Naming.lookup("//" + sp + "/SuperPeer"); // Initialize the node cache peercache = new HashMap<Key, PeerInterface>(); // Initialize word map dict = new HashMap<String, String>(); //////////////////////////////////////////////// // BEGIN CRITICAL SECTION // only one peer will be in this code at a time. superpeer.lock(); // Get this Peer's NodeID nodeid = superpeer.join(); //Start logger lg = new Logger("Peer:" + nodeid.toString()); lg.log(Level.FINER, "Peer started."); // Register with the RMI Registry. lg.log(Level.FINER, "Binding to local RMI registry with name " + nodeid.toString()); Naming.rebind(nodeid.toString(), this); // Get Successor succ = superpeer.getSuccessor(nodeid); // Get hasher lg.log(Level.FINER, "Retrieving Hash object"); hasher = superpeer.getHasher(); // Set mbits int mbits = hasher.getBitSize(); // Initialize finger table ft = new FingerTable(nodeid.succ(), nodeid); // Update finger table constructFingerTable(mbits); lock = true; // If we have a successor, start the notify cycle if (succ != null) { lg.log(Level.FINER, "Calling " + succ.toString()); getPeer(succ).notify(nodeid); } lock = false; superpeer.unlock(); // END CRITICAL SECTION //////////////////////////////////////////////// lg.log(Level.FINER, "Exit Critical Section"); lg.log(Level.INFO, "!!!! Peer " + nodeid + " at " + superpeer.getAddress(nodeid) + " started !!!!"); } catch (Exception e) { e.printStackTrace(); } }
From source file:ComputeNode.java
public ComputeNode(String servername, Double _underLoadThreshold, Double _overLoadThreshold, Double _failProbability, Double _loadConstant, Pair<Double, Double> _loadGaussian, String configFile) throws Exception { server = (ServerInterface) Naming.lookup("//" + servername + "/Server"); id = server.registerNode();//from w w w . j a va2 s. c o m lg = new Logger("Compute Node:" + id); lg.log(Level.INFO, "ComputeNode " + id + " started."); // If a config file was specified if (configFile == null) { configFile = defaultconf; } try { // TODO: Only load if we need to. Properties properties = new Properties(); properties.load(new FileInputStream(configFile)); if (_overLoadThreshold == null) _overLoadThreshold = new Double(properties.getProperty("computenode.overload_threshhold")); overLoadThreshold = _overLoadThreshold; if (_underLoadThreshold == null) _underLoadThreshold = new Double(properties.getProperty("computenode.underload_threshhold")); underLoadThreshold = _underLoadThreshold; if (_failProbability == null) _failProbability = new Double(properties.getProperty("computenode.fail_probability")); failProbability = _failProbability; lg.log(Level.FINER, "ComputeNode " + id + ": under load threshhold = " + underLoadThreshold); lg.log(Level.FINER, "ComputeNode " + id + ": over load threshhold = " + overLoadThreshold); lg.log(Level.FINER, "ComputeNode " + id + ": fail probability = " + failProbability); loadConstant = _loadConstant; if (loadConstant != null) lg.log(Level.FINER, "ComputeNode " + id + ": load constant = " + loadConstant); loadGaussian = _loadGaussian; if (loadGaussian != null) lg.log(Level.FINER, "ComputeNode " + id + ": load gaussian = " + loadGaussian.fst() + "," + loadGaussian.snd()); } catch (Exception e) { lg.log(Level.SEVERE, "ComputeNode " + id + ": Constructor failure! " + underLoadThreshold); e.printStackTrace(); System.exit(1); } myNodeStats = new NodeStats(); myNodeStats.setCurrentLoad(getCurrentLoad()); }
From source file:assign3.client.WaypointClient.java
public WaypointClient(String base, String hostId, String port) throws RemoteException { super(base);//from w w w.j a va2 s .co m this.hostId = hostId; this.port = port; removeWPButt.addActionListener(this); addWPButt.addActionListener(this); modWPButt.addActionListener(this); exportToJSON.addActionListener(this); distBearButt.addActionListener(this); frWps.addItemListener(this); toWps.addItemListener(this); try { server = (WaypointServer) Naming.lookup("rmi://" + hostId + ":" + port + "/WaypointServer"); System.out.println("Client obtained remote object reference to" + " the WaypointServer at:\n" + "rmi://" + hostId + ":" + port + "/WaypointServer"); } catch (Exception e) { System.out.println("Could not find server."); } System.out.println("Getting Waypoints From Server."); String[] names = server.getNames(); for (int i = 0; i < names.length; i++) { Waypoint aWp = server.get(names[i]); frWps.addItem(names[i]); toWps.addItem(names[i]); System.out.println(names[i]); } this.addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent e) { debug("you clicked X"); System.exit(0); } }); setVisible(true); }
From source file:org.apache.jcs.auxiliary.remote.RemoteCacheRestore.java
/** * Returns true if the connection to the remote host for the corresponding cache manager can be * successfully re-established./*from w ww . j av a2s .co m*/ * <p> * @return true if we found a failover server */ public boolean canFix() { if (!canFix) { return canFix; } String registry = "//" + rcm.host + ":" + rcm.port + "/" + rcm.service; if (log.isInfoEnabled()) { log.info("looking up server " + registry); } try { remoteObj = Naming.lookup(registry); if (log.isInfoEnabled()) { log.info("looking up server " + registry); } } catch (Exception ex) { log.error("host=" + rcm.host + "; port" + rcm.port + "; service=" + rcm.service); canFix = false; } return canFix; }
From source file:net.sqs2.omr.task.broker.RemoteTaskExecutorManager.java
private TaskBroker createRemoteTaskBroker(String uriString, long remoteKey, long sessionID) { try {/*from ww w . ja v a 2 s . c o m*/ URI uri = new URI(uriString); if (NetworkUtil.isMyAddress(InetAddress.getAllByName(uri.getHost()))) { return null; } RemoteSessionService sessionService = (RemoteSessionService) Naming.lookup(uri.toString()); // connect to remote SessionService long result = sessionService.ping(remoteKey); // authentication if (DEBUG) { Logger.getLogger("executor").info("RemoteSessionService.URI=" + uri); Logger.getLogger("executor").info("Hello=" + result); } TaskBroker remoteTaskBroker = new TaskBroker("Remote", this.manager, new TaskExecutorEnv(null, sessionService, remoteKey, sessionID)); return remoteTaskBroker; } catch (UnknownHostException ex) { Logger.getLogger("executor").severe("UnknownHostException:" + ex.getMessage()); } catch (SocketException ex) { Logger.getLogger("executor").severe("SocketException:" + ex.getMessage()); } catch (URISyntaxException ex) { Logger.getLogger("executor").severe("URISyntaxException:" + ex.getMessage()); } catch (ConnectException ex) { Logger.getLogger("executor").severe("ConnectException:" + ex.getMessage()); } catch (RemoteException ex) { Logger.getLogger("executor").severe("RemoteException:" + ex.getMessage()); } catch (MalformedURLException ex) { Logger.getLogger("executor").severe("MalformedURLException:" + ex.getMessage()); } catch (NotBoundException ex) { Logger.getLogger("executor").severe("NotBoundException:" + ex.getMessage()); } return null; }