/*
* Copyright 2009 Red Hat, Inc.
* Red Hat licenses this file to you 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 org.hornetq.integration.twitter.impl;
import org.hornetq.api.core.SimpleString;
import org.hornetq.core.filter.Filter;
import org.hornetq.core.logging.Logger;
import org.hornetq.core.postoffice.Binding;
import org.hornetq.core.postoffice.PostOffice;
import org.hornetq.core.server.*;
import org.hornetq.integration.twitter.TwitterConstants;
import org.hornetq.utils.ConfigurationHelper;
import twitter4j.*;
import twitter4j.http.AccessToken;
import java.util.List;
import java.util.Map;
/**
* OutgoingTweetsHandler consumes from configured HornetQ address
* and forwards to the twitter.
*/
public class OutgoingTweetsHandler implements Consumer, ConnectorService
{
private static final Logger log = Logger.getLogger(OutgoingTweetsHandler.class);
private final String connectorName;
private final String consumerKey;
private final String consumerSecret;
private final String accessToken;
private final String accessTokenSecret;
private final String queueName;
private final PostOffice postOffice;
private Twitter twitter = null;
private Queue queue = null;
private Filter filter = null;
private boolean isStarted = false;
public String debug()
{
return toString();
}
public OutgoingTweetsHandler(final String connectorName,
final Map<String, Object> configuration,
final PostOffice postOffice)
{
this.connectorName = connectorName;
this.consumerKey = ConfigurationHelper.getStringProperty(TwitterConstants.CONSUMER_KEY, null, configuration);
this.consumerSecret = ConfigurationHelper.getStringProperty(TwitterConstants.CONSUMER_SECRET, null, configuration);
this.accessToken = ConfigurationHelper.getStringProperty(TwitterConstants.ACCESS_TOKEN, null, configuration);
this.accessTokenSecret = ConfigurationHelper.getStringProperty(TwitterConstants.ACCESS_TOKEN_SECRET, null, configuration);
this.queueName = ConfigurationHelper.getStringProperty(TwitterConstants.QUEUE_NAME, null, configuration);
this.postOffice = postOffice;
}
/**
* TODO streaming API support
* TODO rate limit support
*/
public synchronized void start() throws Exception
{
if(this.isStarted)
{
return;
}
if(this.connectorName == null || this.connectorName.trim().equals(""))
{
throw new Exception("invalid connector name: " + this.connectorName);
}
if(this.queueName == null || this.queueName.trim().equals(""))
{
throw new Exception("invalid queue name: " + queueName);
}
SimpleString name = new SimpleString(this.queueName);
Binding b = this.postOffice.getBinding(name);
if(b == null)
{
throw new Exception(connectorName + ": queue " + queueName + " not found");
}
this.queue = (Queue)b.getBindable();
TwitterFactory tf = new TwitterFactory();
this.twitter = tf.getOAuthAuthorizedInstance(this.consumerKey,
this.consumerSecret,
new AccessToken(this.accessToken,
this.accessTokenSecret));
this.twitter.verifyCredentials();
// TODO make filter-string configurable
// this.filter = FilterImpl.createFilter(filterString);
this.filter = null;
this.queue.addConsumer(this);
this.queue.deliverAsync();
this.isStarted = true;
log.debug(connectorName + ": started");
}
public boolean isStarted()
{
return isStarted; //To change body of implemented methods use File | Settings | File Templates.
}
public void getDeliveringMessages(List<MessageReference> refList)
{
// noop
}
public synchronized void stop() throws Exception
{
if(!this.isStarted)
{
return;
}
log.debug(connectorName + ": receive shutdown request");
this.queue.removeConsumer(this);
this.isStarted = false;
log.debug(connectorName + ": shutdown");
}
public String getName()
{
return connectorName;
}
public Filter getFilter()
{
return filter;
}
public HandleStatus handle(final MessageReference ref) throws Exception
{
if (filter != null && !filter.match(ref.getMessage()))
{
return HandleStatus.NO_MATCH;
}
synchronized (this)
{
ref.handled();
ServerMessage message = ref.getMessage();
StatusUpdate status = new StatusUpdate(message.getBodyBuffer().readString());
// set optional property
if(message.containsProperty(TwitterConstants.KEY_IN_REPLY_TO_STATUS_ID))
{
status.setInReplyToStatusId(message.getLongProperty(TwitterConstants.KEY_IN_REPLY_TO_STATUS_ID));
}
if(message.containsProperty(TwitterConstants.KEY_GEO_LOCATION_LATITUDE))
{
double geolat = message.getDoubleProperty(TwitterConstants.KEY_GEO_LOCATION_LATITUDE);
double geolong = message.getDoubleProperty(TwitterConstants.KEY_GEO_LOCATION_LONGITUDE);
status.setLocation(new GeoLocation(geolat, geolong));
}
if(message.containsProperty(TwitterConstants.KEY_PLACE_ID))
{
status.setPlaceId(message.getStringProperty(TwitterConstants.KEY_PLACE_ID));
}
if(message.containsProperty(TwitterConstants.KEY_DISPLAY_COODINATES))
{
status.setDisplayCoordinates(message.getBooleanProperty(TwitterConstants.KEY_DISPLAY_COODINATES));
}
// send to Twitter
try
{
this.twitter.updateStatus(status);
}
catch (TwitterException e)
{
if(e.getStatusCode() == 403 )
{
// duplicated message
log.warn(connectorName + ": HTTP status code = 403: Ignore duplicated message");
queue.acknowledge(ref);
return HandleStatus.HANDLED;
}
else
{
throw e;
}
}
queue.acknowledge(ref);
log.debug(connectorName + ": forwarded to twitter: " + message.getMessageID());
return HandleStatus.HANDLED;
}
}
public void proceedDeliver(MessageReference ref)
{
// no op
}
/* (non-Javadoc)
* @see org.hornetq.core.server.Consumer#toManagementString()
*/
@Override
public String toManagementString()
{
return toString();
}
}