Implemented object destruction; wired up some missing stuff; created a
test server to make some testing easier; various other cleanups. git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@188 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Michael Bayne
@@ -1,5 +1,5 @@
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//
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// $Id: ClientDObjectMgr.java,v 1.4 2001/07/19 07:09:16 mdb Exp $
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// $Id: ClientDObjectMgr.java,v 1.5 2001/08/07 20:38:58 mdb Exp $
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package com.threerings.cocktail.cher.client;
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@@ -75,6 +75,13 @@ public class ClientDObjectMgr
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_comm.postMessage(new ForwardEventRequest(tevent));
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}
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// inherit documentation from the interface
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public void destroyObject (int oid)
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{
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// forward an object destroyed event to the server
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postEvent(new ObjectDestroyedEvent(oid));
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}
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// inherit documentation from the interface
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public void removedLastSubscriber (DObject obj)
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{
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@@ -154,8 +161,29 @@ public class ClientDObjectMgr
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return;
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}
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// have the object pass this event on to its subscribers
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target.notifySubscribers(event);
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try {
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// apply the event to the object
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boolean notify = event.applyToObject(target);
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// if this is an object destroyed event, we need to remove the
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// object from our object table
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if (event instanceof ObjectDestroyedEvent) {
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Log.info("Uncaching destroyed object " +
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"[oid=" + target.getOid() + "].");
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_ocache.remove(target.getOid());
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}
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// have the object pass this event on to its subscribers if
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// desired
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if (notify) {
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target.notifySubscribers(event);
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}
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} catch (Exception e) {
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Log.warning("Failure processing event [event=" + event +
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", target=" + target + "].");
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Log.logStackTrace(e);
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}
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}
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/**
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@@ -193,7 +221,19 @@ public class ClientDObjectMgr
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*/
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protected void notifyFailure (int oid)
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{
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Log.info("Get failed: " + oid);
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// let the penders know that the object is not available
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PendingRequest req = (PendingRequest)_penders.remove(oid);
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if (req == null) {
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Log.warning("Failed to get object, but no one cares?! " +
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"[oid=" + oid + "].");
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return;
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}
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for (int i = 0; i < req.targets.size(); i++) {
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Subscriber target = (Subscriber)req.targets.get(i);
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// and let them know that the object is in
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target.requestFailed(oid, null);
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}
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}
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/**
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@@ -1,5 +1,5 @@
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//
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// $Id: Communicator.java,v 1.12 2001/08/03 02:11:20 mdb Exp $
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// $Id: Communicator.java,v 1.13 2001/08/07 20:38:58 mdb Exp $
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package com.threerings.cocktail.cher.client;
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@@ -91,6 +91,9 @@ public class Communicator
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return;
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}
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// post a logoff message
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postMessage(new LogoffRequest());
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// let our reader and writer know that it's time to go
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if (_reader != null) {
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// if logoff() is being called by the client as part of a
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@@ -110,28 +113,12 @@ public class Communicator
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if (_writer != null) {
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// shutting down the writer thread is simpler because we can
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// post a termination message on the queue and be sure that it
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// will receive it. we do run the risk that it is in the
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// middle of trying to send a message when we close the
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// socket, but in theory the send will fail, it will complain
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// and then it will cleanly exit. if we were uber paranoid
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// about JVMs misbehaving on simultaneous close()/write(), we
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// could wait here for the writer thread to exit, but that
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// makes me even more nervous because I know that some JVMs
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// don't handle Thread.join() properly (hopefully no one is
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// still using those JVMs but one can never be sure)
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// will receive it. when the writer thread has delivered our
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// logoff request and exited, we will complete the logoff
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// process by closing our socket and invoking the
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// clientDidLogoff callback
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_writer.shutdown();
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}
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// close down our socket
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try {
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_socket.close();
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} catch (IOException cle) {
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Log.warning("Error closing failed socket: " + cle);
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}
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_socket = null;
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// let the client observers know that we're logged off
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_client.notifyObservers(Client.CLIENT_DID_LOGOFF, null);
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}
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/**
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@@ -226,8 +213,20 @@ public class Communicator
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{
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// clear out our writer reference
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_writer = null;
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Log.info("Writer thread exited.");
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// now that the writer thread has gone away, we can safely close
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// our socket and let the client know that the logoff process has
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// completed
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try {
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_socket.close();
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} catch (IOException cle) {
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Log.warning("Error closing failed socket: " + cle);
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}
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_socket = null;
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// let the client observers know that we're logged off
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_client.notifyObservers(Client.CLIENT_DID_LOGOFF, null);
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}
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/**
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@@ -1,5 +1,5 @@
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//
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// $Id: DObject.java,v 1.19 2001/08/04 00:39:44 mdb Exp $
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// $Id: DObject.java,v 1.20 2001/08/07 20:38:58 mdb Exp $
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package com.threerings.cocktail.cher.dobj;
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@@ -233,6 +233,16 @@ public class DObject
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}
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}
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/**
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* Requests that this distributed object be destroyed. It does so by
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* queueing up an object destroyed event which the server will
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* validate and process.
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*/
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public void destroy ()
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{
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_mgr.postEvent(new ObjectDestroyedEvent(_oid));
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}
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/**
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* Checks to ensure that the specified subscriber has access to this
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* object. This will be called before satisfying a subscription
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@@ -1,5 +1,5 @@
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//
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// $Id: DObjectManager.java,v 1.7 2001/08/02 04:49:08 mdb Exp $
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// $Id: DObjectManager.java,v 1.8 2001/08/07 20:38:58 mdb Exp $
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package com.threerings.cocktail.cher.dobj;
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@@ -59,6 +59,15 @@ public interface DObjectManager
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*/
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public void unsubscribeFromObject (int oid, Subscriber target);
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/**
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* Requests that the specified object be destroyed. Once destroyed an
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* object is removed from the runtime system and may no longer have
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* events dispatched on it.
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*
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* @param oid The object id of the distributed object to be destroyed.
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*/
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public void destroyObject (int oid);
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/**
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* Posts a distributed object event into the system. Instead of
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* requesting the modification of a distributed object attribute by
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@@ -0,0 +1,63 @@
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//
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// $Id: ObjectDestroyedEvent.java,v 1.1 2001/08/07 20:38:58 mdb Exp $
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package com.threerings.cocktail.cher.dobj;
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import java.io.DataInputStream;
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import java.io.DataOutputStream;
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import java.io.IOException;
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import java.lang.reflect.Method;
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/**
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* An object destroyed event is dispatched when an object has been removed
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* from the distributed object system. It can also be constructed to
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* request an attribute change on an object and posted to the dobjmgr.
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*
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* @see DObjectManager#postEvent
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*/
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public class ObjectDestroyedEvent extends TypedEvent
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{
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/** The typed object code for this event. */
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public static final short TYPE = TYPE_BASE + 7;
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/**
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* Constructs a new object destroyed event for the specified
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* distributed object.
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*
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* @param targetOid the object id of the object that will be destroyed.
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*/
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public ObjectDestroyedEvent (int targetOid)
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{
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super(targetOid);
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}
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/**
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* Constructs a blank instance of this event in preparation for
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* unserialization from the network.
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*/
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public ObjectDestroyedEvent ()
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{
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}
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/**
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* Applies this attribute change to the object.
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*/
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public boolean applyToObject (DObject target)
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throws ObjectAccessException
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{
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// nothing to do in preparation for destruction, the omgr will
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// have to recognize this type of event and do the right thing
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return true;
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}
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public short getType ()
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{
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return TYPE;
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}
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protected void toString (StringBuffer buf)
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{
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buf.append("DESTROY:");
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super.toString(buf);
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}
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}
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@@ -1,5 +1,5 @@
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//
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// $Id: DObjectFactory.java,v 1.6 2001/08/03 02:11:40 mdb Exp $
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// $Id: DObjectFactory.java,v 1.7 2001/08/07 20:38:58 mdb Exp $
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package com.threerings.cocktail.cher.dobj.io;
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@@ -49,7 +49,7 @@ public class DObjectFactory
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Class clazz = Class.forName(in.readUTF());
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DObject dobj = (DObject)clazz.newInstance();
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dobj.setOid(in.readInt()); // read and set the oid
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Log.info("Unmarshalling object: " + dobj);
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// Log.info("Unmarshalling object: " + dobj);
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// look up the marshaller for that class
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Marshaller marsh = getMarshaller(clazz);
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@@ -1,5 +1,5 @@
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//
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// $Id: TypedObjectRegistry.java,v 1.4 2001/08/04 01:05:25 mdb Exp $
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// $Id: TypedObjectRegistry.java,v 1.5 2001/08/07 20:38:58 mdb Exp $
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package com.threerings.cocktail.cher.io;
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@@ -64,5 +64,7 @@ public class TypedObjectRegistry
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ObjectRemovedEvent.class);
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TypedObjectFactory.registerClass(ReleaseLockEvent.TYPE,
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ReleaseLockEvent.class);
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TypedObjectFactory.registerClass(ObjectDestroyedEvent.TYPE,
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ObjectDestroyedEvent.class);
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}
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}
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@@ -1,8 +1,11 @@
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//
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// $Id: PresentsDObjectMgr.java,v 1.9 2001/07/23 21:12:55 mdb Exp $
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// $Id: PresentsDObjectMgr.java,v 1.10 2001/08/07 20:38:58 mdb Exp $
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package com.threerings.cocktail.cher.server;
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import java.lang.reflect.Method;
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import java.util.HashMap;
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import com.samskivert.util.Queue;
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import com.threerings.cocktail.cher.Log;
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@@ -61,6 +64,13 @@ public class CherDObjectMgr implements DObjectManager
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AccessObjectEvent.UNSUBSCRIBE));
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}
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// inherit documentation from the interface
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public void destroyObject (int oid)
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{
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// queue up an object destroyed event
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postEvent(new ObjectDestroyedEvent(oid));
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}
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// inherit documentation from the interface
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public void postEvent (DEvent event)
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{
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@@ -121,7 +131,10 @@ public class CherDObjectMgr implements DObjectManager
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// do any internal management necessary based on this
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// event
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// **TBD**
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Method helper = (Method)_helpers.get(event.getClass());
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if (helper != null) {
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helper.invoke(this, new Object[] { event, target });
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}
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// if the event returns false from applyToObject, this
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// means it's a silent event and we shouldn't notify the
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@@ -153,6 +166,17 @@ public class CherDObjectMgr implements DObjectManager
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_evqueue.append(new ShutdownEvent());
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}
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/**
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* Called as a helper for <code>ObjectDestroyedEvent</code> events. It
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* removes the object from the object table.
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*/
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public void objectDestroyed (DEvent event, DObject target)
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{
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Log.info("Removing destroyed object from table " +
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"[oid=" + target.getOid() + "].");
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_objects.remove(target.getOid());
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}
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protected synchronized boolean isRunning ()
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{
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return _running;
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@@ -170,11 +194,6 @@ public class CherDObjectMgr implements DObjectManager
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return _nextOid;
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}
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protected boolean _running = true;
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protected Queue _evqueue = new Queue();
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protected IntMap _objects = new IntMap();
|
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protected int _nextOid = 0;
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/**
|
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* Used to create a distributed object and register it with the
|
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* system.
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@@ -318,4 +337,35 @@ public class CherDObjectMgr implements DObjectManager
|
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return false;
|
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}
|
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}
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/**
|
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* Registers our event helper methods.
|
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*/
|
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protected static void registerEventHelpers ()
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{
|
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Class[] ptypes = new Class[] { DEvent.class, DObject.class };
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Class omgrcl = CherDObjectMgr.class;
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Method method;
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try {
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method = omgrcl.getMethod("objectDestroyed", ptypes);
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_helpers.put(ObjectDestroyedEvent.class, method);
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} catch (Exception e) {
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Log.warning("Unable to register event helpers " +
|
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"[error=" + e + "].");
|
||||
}
|
||||
}
|
||||
|
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protected boolean _running = true;
|
||||
protected Queue _evqueue = new Queue();
|
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protected IntMap _objects = new IntMap();
|
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protected int _nextOid = 0;
|
||||
|
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/**
|
||||
* This table maps event classes to helper methods that perform some
|
||||
* additional processing for particular events.
|
||||
*/
|
||||
protected static HashMap _helpers = new HashMap();
|
||||
static { registerEventHelpers(); }
|
||||
}
|
||||
|
||||
@@ -1,5 +1,5 @@
|
||||
//
|
||||
// $Id: ConnectionManager.java,v 1.7 2001/08/03 02:12:52 mdb Exp $
|
||||
// $Id: ConnectionManager.java,v 1.8 2001/08/07 20:38:58 mdb Exp $
|
||||
|
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package com.threerings.cocktail.cher.server.net;
|
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|
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@@ -216,7 +216,7 @@ public class ConnectionManager extends LoopingThread
|
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if (socket == null) {
|
||||
// in theory this shouldn't happen because we got an
|
||||
// ACCEPT_READY event, but better safe than sorry
|
||||
Log.info("Psych! Got ACCEPT_READY, but no connection.");
|
||||
// Log.info("Psych! Got ACCEPT_READY, but no connection.");
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
@@ -1,5 +1,5 @@
|
||||
//
|
||||
// $Id: RunningConnection.java,v 1.3 2001/06/02 01:30:37 mdb Exp $
|
||||
// $Id: RunningConnection.java,v 1.4 2001/08/07 20:38:58 mdb Exp $
|
||||
|
||||
package com.threerings.cocktail.cher.server.net;
|
||||
|
||||
@@ -33,6 +33,10 @@ public class RunningConnection extends Connection
|
||||
|
||||
public String toString ()
|
||||
{
|
||||
return "[mode=RUNNING, addr=" + _socket.getInetAddress() + "]";
|
||||
if (_socket != null) {
|
||||
return "[mode=RUNNING, addr=" + _socket.getInetAddress() + "]";
|
||||
} else {
|
||||
return "[mode=RUNNING, addr=<disconnected>]";
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@@ -0,0 +1,9 @@
|
||||
#
|
||||
# $Id: server.properties,v 1.1 2001/08/07 20:38:58 mdb Exp $
|
||||
#
|
||||
# Configuration for the Cher test server
|
||||
|
||||
# These invocation service providers will be registered with the
|
||||
# invocation manager during the server init process
|
||||
providers = \
|
||||
test = com.threerings.cocktail.cher.server.test.TestProvider
|
||||
@@ -1,5 +1,5 @@
|
||||
//
|
||||
// $Id: TestClient.java,v 1.7 2001/07/19 19:18:06 mdb Exp $
|
||||
// $Id: TestClient.java,v 1.8 2001/08/07 20:38:58 mdb Exp $
|
||||
|
||||
package com.threerings.cocktail.cher.client.test;
|
||||
|
||||
@@ -18,6 +18,11 @@ import com.threerings.cocktail.cher.server.test.TestObject;
|
||||
public class TestClient
|
||||
implements Client.Invoker, ClientObserver, Subscriber
|
||||
{
|
||||
public void setClient (Client client)
|
||||
{
|
||||
_client = client;
|
||||
}
|
||||
|
||||
public void invokeLater (Runnable run)
|
||||
{
|
||||
// queue it on up
|
||||
@@ -36,13 +41,11 @@ public class TestClient
|
||||
public void clientDidLogon (Client client)
|
||||
{
|
||||
Log.info("Client did logon [client=" + client + "].");
|
||||
// try subscribing to a test object
|
||||
client.getDObjectManager().subscribeToObject(2, this);
|
||||
// register our test notification receiver
|
||||
client.getInvocationManager().registerReceiver(TestService.MODULE,
|
||||
new TestReceiver());
|
||||
// issue a test invocation request
|
||||
TestService.test(client, "foo", 1, this);
|
||||
// get the test object id
|
||||
TestService.getTestOid(client, this);
|
||||
}
|
||||
|
||||
public void clientFailedToLogon (Client client, Exception cause)
|
||||
@@ -79,28 +82,41 @@ public class TestClient
|
||||
{
|
||||
Log.info("Object unavailable [oid=" + oid +
|
||||
", reason=" + cause + "].");
|
||||
// nothing to do, so might as well logoff
|
||||
_client.logoff(true);
|
||||
}
|
||||
|
||||
public boolean handleEvent (DEvent event, DObject target)
|
||||
{
|
||||
Log.info("Got event [event=" + event + ", target=" + target + "].");
|
||||
// dispatch a second event
|
||||
((TestObject)target).setBar("rofl!");
|
||||
// unsubscribe to the object to make sure we don't get the event
|
||||
return false;
|
||||
if (event instanceof AttributeChangedEvent) {
|
||||
// request to destroy the object
|
||||
target.destroy();
|
||||
} else {
|
||||
// request that we log off
|
||||
_client.logoff(true);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
public void handleTestSucceeded (String one, int two)
|
||||
public void handleTestSucceeded (int invid, String one, int two)
|
||||
{
|
||||
Log.info("Got test response [one=" + one + ", two=" + two + "].");
|
||||
}
|
||||
|
||||
public void handleGotTestOid (int invid, int oid)
|
||||
{
|
||||
// subscribe to the test object
|
||||
_client.getDObjectManager().subscribeToObject(oid, this);
|
||||
}
|
||||
|
||||
public static void main (String[] args)
|
||||
{
|
||||
TestClient tclient = new TestClient();
|
||||
UsernamePasswordCreds creds =
|
||||
new UsernamePasswordCreds("test", "test");
|
||||
Client client = new Client(creds, tclient);
|
||||
tclient.setClient(client);
|
||||
client.addObserver(tclient);
|
||||
client.setServer("localhost", 4007);
|
||||
client.logon();
|
||||
@@ -109,4 +125,5 @@ public class TestClient
|
||||
}
|
||||
|
||||
protected Queue _queue = new Queue();
|
||||
protected Client _client;
|
||||
}
|
||||
|
||||
@@ -1,5 +1,5 @@
|
||||
//
|
||||
// $Id: TestService.java,v 1.1 2001/07/19 07:48:25 mdb Exp $
|
||||
// $Id: TestService.java,v 1.2 2001/08/07 20:38:58 mdb Exp $
|
||||
|
||||
package com.threerings.cocktail.cher.client.test;
|
||||
|
||||
@@ -22,4 +22,11 @@ public class TestService
|
||||
invmgr.invoke(MODULE, "Test", args, rsptarget);
|
||||
Log.info("Sent test request [one=" + one + ", two=" + two + "].");
|
||||
}
|
||||
|
||||
public static void getTestOid (Client client, Object rsptarget)
|
||||
{
|
||||
InvocationManager invmgr = client.getInvocationManager();
|
||||
Object[] args = new Object[0];
|
||||
invmgr.invoke(MODULE, "GetTestOid", args, rsptarget);
|
||||
}
|
||||
}
|
||||
|
||||
@@ -1,5 +1,5 @@
|
||||
//
|
||||
// $Id: TestProvider.java,v 1.4 2001/07/19 19:18:07 mdb Exp $
|
||||
// $Id: TestProvider.java,v 1.5 2001/08/07 20:38:58 mdb Exp $
|
||||
|
||||
package com.threerings.cocktail.cher.server.test;
|
||||
|
||||
@@ -27,4 +27,10 @@ public class TestProvider extends InvocationProvider
|
||||
// and issue a response to this invocation request
|
||||
return createResponse("TestSucceeded", one, new Integer(two));
|
||||
}
|
||||
|
||||
public Object[] handleGetTestOidRequest (ClientObject source)
|
||||
{
|
||||
int oid = TestServer.testobj.getOid();
|
||||
return createResponse("GotTestOid", new Integer(oid));
|
||||
}
|
||||
}
|
||||
|
||||
@@ -0,0 +1,70 @@
|
||||
//
|
||||
// $Id: TestServer.java,v 1.1 2001/08/07 20:38:58 mdb Exp $
|
||||
|
||||
package com.threerings.cocktail.cher.server.test;
|
||||
|
||||
import java.io.IOException;
|
||||
|
||||
import com.threerings.cocktail.cher.Log;
|
||||
import com.threerings.cocktail.cher.dobj.*;
|
||||
import com.threerings.cocktail.cher.server.*;
|
||||
|
||||
public class TestServer extends CherServer
|
||||
{
|
||||
/** The namespace used for server config properties. */
|
||||
public static final String CONFIG_KEY = "test";
|
||||
|
||||
public static TestObject testobj;
|
||||
|
||||
public void init ()
|
||||
throws IOException
|
||||
{
|
||||
super.init();
|
||||
|
||||
// bind the party server config into the namespace
|
||||
config.bindProperties(CONFIG_KEY, CONFIG_PATH);
|
||||
|
||||
// register our invocation service providers
|
||||
registerProviders(config.getValue(PROVIDERS_KEY, (String[])null));
|
||||
|
||||
// create a test object
|
||||
Subscriber sub = new Subscriber()
|
||||
{
|
||||
public void objectAvailable (DObject object)
|
||||
{
|
||||
testobj = (TestObject)object;
|
||||
}
|
||||
|
||||
public void requestFailed (int oid, ObjectAccessException cause)
|
||||
{
|
||||
Log.warning("Unable to create test object " +
|
||||
"[error=" + cause + "].");
|
||||
}
|
||||
|
||||
public boolean handleEvent (DEvent event, DObject target)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
};
|
||||
omgr.createObject(TestObject.class, sub, false);
|
||||
}
|
||||
|
||||
public static void main (String[] args)
|
||||
{
|
||||
TestServer server = new TestServer();
|
||||
try {
|
||||
server.init();
|
||||
server.run();
|
||||
} catch (Exception e) {
|
||||
Log.warning("Unable to initialize server.");
|
||||
Log.logStackTrace(e);
|
||||
}
|
||||
}
|
||||
|
||||
// the path to the config file
|
||||
protected final static String CONFIG_PATH =
|
||||
"rsrc/config/cocktail/cher/test/server";
|
||||
|
||||
// the config key for our list of invocation provider mappings
|
||||
protected final static String PROVIDERS_KEY = CONFIG_KEY + ".providers";
|
||||
}
|
||||
Reference in New Issue
Block a user