com.appspot.bitlyminous.handler.twitter.AddUrlToDeliciousHandler.java Source code

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Here is the source code for com.appspot.bitlyminous.handler.twitter.AddUrlToDeliciousHandler.java

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/*
 * Copyright 2010 Nabeel Mukhtar 
 * 
 * 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 com.appspot.bitlyminous.handler.twitter;

import java.net.HttpURLConnection;
import java.util.List;
import java.util.logging.Level;

import twitter4j.Status;
import twitter4j.StatusUpdate;

import com.appspot.bitlyminous.constant.ApplicationConstants;
import com.appspot.bitlyminous.entity.Url;
import com.appspot.bitlyminous.entity.User;
import com.appspot.bitlyminous.gateway.DeliciousGateway;
import com.appspot.bitlyminous.gateway.GatewayException;
import com.appspot.bitlyminous.gateway.GatewayFactory;
import com.google.appengine.api.datastore.Text;

/**
 * The Class AddUrlToDeliciousHandler.
 */
public class AddUrlToDeliciousHandler extends AbstractTwitterHandler {

    /**
     * Instantiates a new adds the url to delicious handler.
     * 
     * @param context the context
     */
    public AddUrlToDeliciousHandler(TwitterContext context) {
        super(context);
    }

    /** The Constant GATEWAY_FACTORY. */
    private static final GatewayFactory GATEWAY_FACTORY = GatewayFactory.newInstance();

    /* (non-Javadoc)
     * @see com.appspot.bitlyminous.handler.twitter.TwitterHandler#execute(twitter4j.Status)
     */
    @Override
    public StatusUpdate execute(Status tweet) {
        try {
            User user = context.getUser();
            if (user == null) {
                user = getUserByScreenName(tweet.getUser().getScreenName());
                context.setUser(user);
            }
            if (user.getDeliciousToken() != null && user.getDeliciousSecret() != null) {
                DeliciousGateway gateway = GATEWAY_FACTORY.createDeliciousGateway(
                        ApplicationConstants.DELICIOUS_CONSUMER_KEY, ApplicationConstants.DELICIOUS_CONSUMER_SECRET,
                        user.getDeliciousToken().getValue(), user.getDeliciousSecret().getValue());
                gateway.getOAuthAuthentication().setOauthSessionHandle(user.getDeliciousSessionHandle().getValue());
                List<Url> urls = context.getUrls();
                for (Url entity : urls) {
                    try {
                        gateway.addUrl(entity);
                    } catch (GatewayException e) {
                        if (e.getErrorCode() == HttpURLConnection.HTTP_UNAUTHORIZED) {
                            gateway.refreshToken(user.getDeliciousSessionHandle().getValue());
                            user.setDeliciousToken(new Text(gateway.getOAuthAuthentication().getAccessToken()));
                            user.setDeliciousSecret(
                                    new Text(gateway.getOAuthAuthentication().getAccessTokenSecret()));
                            user.setDeliciousSessionHandle(
                                    new Text(gateway.getOAuthAuthentication().getOauthSessionHandle()));
                            gateway.addUrl(entity);
                        } else {
                            throw e;
                        }
                    }
                }
            }
        } catch (Exception e) {
            logger.log(Level.SEVERE, "Error while adding url to delicious.", e);
        }
        return null;
    }
}