won.bot.framework.eventbot.action.impl.needlifecycle.CreateNeedWithFacetsAction.java Source code

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Here is the source code for won.bot.framework.eventbot.action.impl.needlifecycle.CreateNeedWithFacetsAction.java

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/*
 * 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.needlifecycle;

import com.hp.hpl.jena.rdf.model.Model;
import org.apache.commons.lang3.StringUtils;
import won.bot.framework.eventbot.EventListenerContext;
import won.bot.framework.eventbot.action.EventBotActionUtils;
import won.bot.framework.eventbot.event.Event;
import won.bot.framework.eventbot.event.NeedCreationFailedEvent;
import won.bot.framework.eventbot.event.impl.needlifecycle.NeedCreatedEvent;
import won.bot.framework.eventbot.event.impl.needlifecycle.NeedProducerExhaustedEvent;
import won.bot.framework.eventbot.event.impl.wonmessage.FailureResponseEvent;
import won.bot.framework.eventbot.listener.EventListener;
import won.protocol.message.WonMessage;
import won.protocol.service.WonNodeInformationService;
import won.protocol.util.RdfUtils;
import won.protocol.util.WonRdfUtils;

import java.net.URI;

/**
* Creates a need with the specified facets.
* If no facet is specified, the ownerFacet will be used.
*/
public class CreateNeedWithFacetsAction extends AbstractCreateNeedAction {
    public CreateNeedWithFacetsAction(EventListenerContext eventListenerContext, String uriListName,
            URI... facets) {
        super(eventListenerContext, uriListName, facets);
    }

    public CreateNeedWithFacetsAction(final EventListenerContext eventListenerContext, final String uriListName,
            final boolean usedForTesting, final boolean doNotMatch, final URI... facets) {
        super(eventListenerContext, uriListName, usedForTesting, doNotMatch, facets);
    }

    public CreateNeedWithFacetsAction(EventListenerContext eventListenerContext, URI... facets) {
        super(eventListenerContext, facets);
    }

    @Override
    protected void doRun(Event event) throws Exception {
        if (getEventListenerContext().getNeedProducer().isExhausted()) {
            logger.info("the bot's need producer is exhausted.");
            getEventListenerContext().getEventBus().publish(new NeedProducerExhaustedEvent());
            return;
        }
        final Model needModel = getEventListenerContext().getNeedProducer().create();
        if (needModel == null) {
            logger.warn("needproducer failed to produce a need model, aborting need creation");
            return;
        }
        for (URI facetURI : facets) {
            WonRdfUtils.FacetUtils.addFacet(needModel, facetURI);
        }
        final URI wonNodeUri = getEventListenerContext().getNodeURISource().getNodeURI();
        logger.debug("creating need on won node {} with content {} ", wonNodeUri,
                StringUtils.abbreviate(RdfUtils.toString(needModel), 150));
        WonNodeInformationService wonNodeInformationService = getEventListenerContext()
                .getWonNodeInformationService();
        final URI needURI = wonNodeInformationService.generateNeedURI(wonNodeUri);
        WonMessage createNeedMessage = createWonMessage(wonNodeInformationService, needURI, wonNodeUri, needModel);
        //remember the need URI so we can react to success/failure responses
        EventBotActionUtils.rememberInListIfNamePresent(getEventListenerContext(), needURI, uriListName);

        EventListener successCallback = new EventListener() {
            @Override
            public void onEvent(Event event) throws Exception {
                logger.debug("need creation successful, new need URI is {}", needURI);
                getEventListenerContext().getEventBus()
                        .publish(new NeedCreatedEvent(needURI, wonNodeUri, needModel, null));
            }
        };

        EventListener failureCallback = new EventListener() {
            @Override
            public void onEvent(Event event) throws Exception {
                String textMessage = WonRdfUtils.MessageUtils
                        .getTextMessage(((FailureResponseEvent) event).getFailureMessage());
                logger.debug("need creation failed for need URI {}, original message URI {}: {}", new Object[] {
                        needURI, ((FailureResponseEvent) event).getOriginalMessageURI(), textMessage });
                EventBotActionUtils.removeFromListIfNamePresent(getEventListenerContext(), needURI, uriListName);
                getEventListenerContext().getEventBus().publish(new NeedCreationFailedEvent(wonNodeUri));
            }
        };
        EventBotActionUtils.makeAndSubscribeResponseListener(createNeedMessage, successCallback, failureCallback,
                getEventListenerContext());

        logger.debug("registered listeners for response to message URI {}", createNeedMessage.getMessageURI());
        getEventListenerContext().getWonMessageSender().sendWonMessage(createNeedMessage);
        logger.debug("need creation message sent with message URI {}", createNeedMessage.getMessageURI());
    }

}