/*
* Copyright 2012 Research Studios Austria Forschungsges.m.b.H.
*
* 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 won.bot.framework.eventbot.action.impl.wonmessage;
import org.apache.jena.query.Dataset;
import won.bot.framework.eventbot.EventListenerContext;
import won.bot.framework.eventbot.action.BaseEventBotAction;
import won.bot.framework.eventbot.event.ConnectionSpecificEvent;
import won.bot.framework.eventbot.event.Event;
import won.bot.framework.eventbot.event.MessageEvent;
import won.bot.framework.eventbot.listener.EventListener;
import won.protocol.exception.WonMessageBuilderException;
import won.protocol.message.WonMessage;
import won.protocol.message.WonMessageBuilder;
import won.protocol.service.WonNodeInformationService;
import won.protocol.util.WonRdfUtils;
import java.net.URI;
import java.util.Date;
/**
* Listener that responds to open and message events with automatic messages.
* Can be configured to apply a timeout (non-blocking) before sending messages.
*/
public class RespondWithEchoToMessageAction extends BaseEventBotAction
{
private long millisTimeoutBeforeReply = 0;
public RespondWithEchoToMessageAction(EventListenerContext eventListenerContext) {
super(eventListenerContext);
}
public RespondWithEchoToMessageAction(final EventListenerContext eventListenerContext, final long millisTimeoutBeforeReply) {
super(eventListenerContext);
this.millisTimeoutBeforeReply = millisTimeoutBeforeReply;
}
@Override
protected void doRun(final Event event, EventListener executingListener) throws Exception
{
if (event instanceof ConnectionSpecificEvent){
handleMessageEvent((ConnectionSpecificEvent) event);
}
}
private void handleMessageEvent(final ConnectionSpecificEvent messageEvent){
getEventListenerContext().getTaskScheduler().schedule(new Runnable()
{
@Override
public void run()
{
String message = null;
if (messageEvent instanceof MessageEvent) {
message = createMessage(extractTextMessageFromWonMessage(((MessageEvent)messageEvent).getWonMessage()));
} else {
message = createMessage(null);
}
URI connectionUri = messageEvent.getConnectionURI();
logger.debug("sending message " + message);
try {
getEventListenerContext().getWonMessageSender().sendWonMessage(createWonMessage(connectionUri, message));
} catch (Exception e) {
logger.warn("could not send message via connection {}", connectionUri, e);
}
}
}, new Date(System.currentTimeMillis() + this.millisTimeoutBeforeReply));
}
private String extractTextMessageFromWonMessage(WonMessage wonMessage){
if (wonMessage == null) return null;
return WonRdfUtils.MessageUtils.getTextMessage(wonMessage);
}
private String createMessage(String toEcho)
{
if (toEcho == null) {
return "auto reply (delay: "+ millisTimeoutBeforeReply + " millis)";
} else {
return "You said: '" + toEcho + "' (delay: "+ millisTimeoutBeforeReply + " millis)";
}
}
private WonMessage createWonMessage(URI connectionURI, String textMessage) throws WonMessageBuilderException {
WonNodeInformationService wonNodeInformationService =
getEventListenerContext().getWonNodeInformationService();
Dataset connectionRDF =
getEventListenerContext().getLinkedDataSource().getDataForResource(connectionURI);
URI remoteNeed = WonRdfUtils.ConnectionUtils.getRemoteNeedURIFromConnection(connectionRDF, connectionURI);
URI localNeed = WonRdfUtils.ConnectionUtils.getLocalNeedURIFromConnection(connectionRDF, connectionURI);
URI wonNode = WonRdfUtils.ConnectionUtils.getWonNodeURIFromConnection(connectionRDF, connectionURI);
Dataset remoteNeedRDF =
getEventListenerContext().getLinkedDataSource().getDataForResource(remoteNeed);
URI messageURI = wonNodeInformationService.generateEventURI(wonNode);
return WonMessageBuilder
.setMessagePropertiesForConnectionMessage(
messageURI,
connectionURI,
localNeed,
wonNode,
WonRdfUtils.ConnectionUtils.getRemoteConnectionURIFromConnection(connectionRDF, connectionURI),
remoteNeed,
WonRdfUtils.NeedUtils.getWonNodeURIFromNeed(remoteNeedRDF, remoteNeed),
textMessage)
.build();
}
}