Michael Bayne
6e9077780c
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5829 542714f4-19e9-0310-aa3c-eee0fc999fb1
104 lines
3.6 KiB
Java
104 lines
3.6 KiB
Java
//
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// $Id$
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//
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// Narya library - tools for developing networked games
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// Copyright (C) 2002-2009 Three Rings Design, Inc., All Rights Reserved
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// http://www.threerings.net/code/narya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.presents.server;
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import java.util.HashMap;
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import com.google.common.collect.Maps;
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import com.threerings.presents.client.TimeBaseService.GotTimeBaseListener;
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import com.threerings.presents.data.ClientObject;
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import com.threerings.presents.data.TimeBaseCodes;
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import com.threerings.presents.data.TimeBaseObject;
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import com.threerings.presents.dobj.RootDObjectManager;
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/**
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* Provides the server-side of the time base services. The time base services provide a means by
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* which delta times can be sent over the network which are expanded based on a shared base time
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* into full time stamps.
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*/
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public class TimeBaseProvider
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implements InvocationProvider, TimeBaseCodes
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{
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/**
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* Registers the time provider with the appropriate managers. Called by the presents server at
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* startup.
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*/
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public static void init (InvocationManager invmgr, RootDObjectManager omgr)
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{
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// we'll need these later
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_invmgr = invmgr;
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_omgr = omgr;
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// register a provider instance
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invmgr.registerDispatcher(new TimeBaseDispatcher(new TimeBaseProvider()), GLOBAL_GROUP);
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}
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/**
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* Creates a time base object which can subsequently be fetched by the client and used to send
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* delta times.
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*
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* @param timeBase the name of the time base to create.
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*
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* @return the created and registered time base object.
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*/
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public static TimeBaseObject createTimeBase (String timeBase)
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{
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TimeBaseObject object = _omgr.registerObject(new TimeBaseObject());
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_timeBases.put(timeBase, object);
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return object;
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}
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/**
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* Returns the named timebase object, or null if no time base object has been created with that
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* name.
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*/
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public static TimeBaseObject getTimeBase (String timeBase)
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{
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return _timeBases.get(timeBase);
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}
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/**
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* Processes a request from a client to fetch the oid of the specified time object.
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*/
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public void getTimeOid (ClientObject source, String timeBase, GotTimeBaseListener listener)
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throws InvocationException
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{
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// look up the time base object in question
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TimeBaseObject time = getTimeBase(timeBase);
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if (time == null) {
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throw new InvocationException(NO_SUCH_TIME_BASE);
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}
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// and send the response
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listener.gotTimeOid(time.getOid());
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}
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/** Used to keep track of our time base objects. */
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protected static HashMap<String,TimeBaseObject> _timeBases = Maps.newHashMap();
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/** The invocation manager with which we interoperate. */
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protected static InvocationManager _invmgr;
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/** The distributed object manager with which we interoperate. */
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protected static RootDObjectManager _omgr;
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}
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