Examples of java.rmi.registry.Registry

java.rmi.registry.Registry
Registry is a remote interface to a simple remote object registry that provides methods for storing and retrieving remote object references bound with arbitrary string names. The bind, unbind, and rebind methods are used to alter the name bindings in the registry, and the lookup and list methods are used to query the current name bindings.
In its typical usage, a Registry enables RMI client bootstrapping: it provides a simple means for a client to obtain an initial reference to a remote object. Therefore, a registry's remote object implementation is typically exported with a well-known address, such as with a well-known {@link java.rmi.server.ObjID#REGISTRY_ID ObjID} and TCP port number(default is {@link #REGISTRY_PORT 1099}).
The {@link LocateRegistry} class provides a programmatic API forconstructing a bootstrap reference to a Registry at a remote address (see the static getRegistry methods) and for creating and exporting a Registry in the current VM on a particular local address (see the static createRegistry methods).
A Registry implementation may choose to restrict access to some or all of its methods (for example, methods that mutate the registry's bindings may be restricted to calls originating from the local host). If a Registry method chooses to deny access for a given invocation, its implementation may throw {@link java.rmi.AccessException}, which (because it extends {@link java.rmi.RemoteException}) will be wrapped in a {@link java.rmi.ServerException} when caught by aremote client.
The names used for bindings in a Registry are pure strings, not parsed. A service which stores its remote reference in a Registry may wish to use a package name as a prefix in the name binding to reduce the likelihood of name collisions in the registry. @author Ann Wollrath @author Peter Jones @since JDK1.1 @see LocateRegistry

         */
    }


    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());

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        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) {

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    }


    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 {
            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;

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        endpoint.getRemoteInterfaces().toArray(interfaces);
        proxy = (Remote)Proxy.newProxyInstance(endpoint.getClassLoader(), interfaces, this);
        stub = UnicastRemoteObject.exportObject(proxy, endpoint.getPort());


        try {
            Registry registry = endpoint.getRegistry();
            String name = endpoint.getName();
            registry.bind(name, stub);


        } catch (Exception e) {
            // Registration might fail.. clean up..
            try {
                UnicastRemoteObject.unexportObject(stub, true);

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    @Override
    protected void doStop() throws Exception {
        super.doStop();
        try {
            Registry registry = endpoint.getRegistry();
            registry.unbind(endpoint.getName());
        } catch (Throwable e) {
            // do our best to unregister
        }
        UnicastRemoteObject.unexportObject(proxy, true);
    }

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                throw new ConfigurationException("Please check your RMI Registry settings!!!");
            }
        } else {
            // check if the specified rmi registry is running!
            try {
                Registry registry = LocateRegistry.getRegistry(this.rmiRegistryHost, this.rmiRegistryPort);
            } catch (RemoteException re) {
                getLogger().error("Couldn't find RMI Registry [" + this.rmiRegistryHost + ":" +
                                  this.rmiRegistryPort);
                throw new ConfigurationException("Please check your RMI Registry settings!!!");
            }

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        return(mbeanServer);
    }


    private void startRMIRegistry() throws BrokerException {
  String regPortStr = null;
  Registry registry = null;
  boolean registryExists = false;
  int port;


  if (!startRmiRegistry())  {
      return;
  }


        port = getRmiRegistryPort();


  String jmxHostname = Globals.getJMXHostname();


  try  {
      if (jmxHostname != null && !jmxHostname.equals(Globals.HOSTNAME_ALL))  {
          registry = LocateRegistry.getRegistry(jmxHostname, port);
      } else  {
          registry = LocateRegistry.getRegistry(port);
      }


      /*
       * Call list() to force a remote call - this
       * confirms if the registry is up and running
       */
      String s[] = registry.list();
      registryExists = true;
  } catch(RemoteException re)  {
      /*
       * An exception will be caught if there is no registry running
       * at the specified port. Not a problem since we are about
       * to create a registry.
       */
  }


  if (registryExists)  {
      throw new BrokerException(rb.getString(rb.W_JMX_RMI_REGISTRY_EXISTS, 
            Integer.toString(port)));
  }


  try  {
      if (jmxHostname != null && !jmxHostname.equals(Globals.HOSTNAME_ALL))  {
          MQRMIServerSocketFactory ssf = 
        new MQRMIServerSocketFactory(jmxHostname, 0, false);


          registry = LocateRegistry.createRegistry(port, null, ssf);
      } else  {
          registry = LocateRegistry.createRegistry(port);
      }


      /*
       * Call list() to force a remote call - this
       * confirms if the registry is up and running
       */
      String s[] = registry.list();
            logger.log(Logger.INFO, 
    rb.getString(rb.I_JMX_RMI_REGISTRY_STARTED, Integer.toString(port)));
  } catch(RemoteException re)  {
      throw new BrokerException(
    rb.getString(rb.W_JMX_RMI_REGISTRY_STARTED_EXCEPTION,

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        MBeanServer mBeanServer = null;






        Registry reg=null;


        


        // TODO: use config to get the registry port, url, pass, user

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      try
      {
         int serverId = getServerPeer(target).getServerPeerID();


         //First unregister from the RMI registry
         Registry registry = LocateRegistry.getRegistry(RMITestServer.DEFAULT_REGISTRY_PORT);


         String name = RMITestServer.RMI_SERVER_PREFIX + serverId;
         registry.unbind(name);
         log.info("unregistered " + name + " from registry");


         name = RMITestServer.NAMING_SERVER_PREFIX + serverId;
         registry.unbind(name);
         log.info("unregistered " + name + " from registry");


         log.info("#####");
         log.info("#####");
         log.info("##### Halting the server!");

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      log.debug("RMI server " + serverIndex + " created");


      // let RMI know the bind address
      System.setProperty("java.rmi.server.hostname", host);


      Registry registry;


      // try to bind first
      try
      {
         registry = LocateRegistry.getRegistry(DEFAULT_REGISTRY_PORT);
         registry.bind(RMI_SERVER_PREFIX + serverIndex, testServer);
         registry.bind(NAMING_SERVER_PREFIX + serverIndex, testServer.getNamingDelegate());
      }
      catch(Exception e)
      {
         log.info("Failure using an existing registry, trying creating it");


         // try to create it
         registry = LocateRegistry.createRegistry(DEFAULT_REGISTRY_PORT);


         registry.bind(RMI_SERVER_PREFIX + serverIndex, testServer);
         registry.bind(NAMING_SERVER_PREFIX + serverIndex, testServer.getNamingDelegate());
      }


      log.info("RMI server " + serverIndex + " bound");     
   }

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