com.google.code.sagetvaddons.sagealert.server.TwitterServiceImpl.java Source code

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Here is the source code for com.google.code.sagetvaddons.sagealert.server.TwitterServiceImpl.java

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/*
 *      Copyright 2010 Battams, Derek
 *       
 *       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.google.code.sagetvaddons.sagealert.server;

import java.io.IOException;

import javax.servlet.http.HttpSession;

import org.apache.log4j.Logger;

import twitter4j.Twitter;
import twitter4j.TwitterException;
import twitter4j.TwitterFactory;
import twitter4j.http.AccessToken;
import twitter4j.http.RequestToken;

import com.google.code.sagetvaddons.sagealert.shared.TwitterService;
import com.google.code.sagetvaddons.sagealert.shared.TwitterSettings;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;

/**
 * @author dbattams
 *
 */
@SuppressWarnings("serial")
final public class TwitterServiceImpl extends RemoteServiceServlet implements TwitterService {
    static private final Logger LOG = Logger.getLogger(TwitterServiceImpl.class);

    /* (non-Javadoc)
     * @see com.google.code.sagetvaddons.sagealert.shared.TwitterService#getPinUrl()
     */
    public String getPinUrl() throws IOException {
        HttpSession sess = this.getThreadLocalRequest().getSession();
        RequestToken rTok = null;
        Twitter t = new TwitterFactory().getInstance();
        t.setOAuthConsumer(TwitterServer.C_KEY, TwitterServer.C_HUSH);
        try {
            rTok = t.getOAuthRequestToken();
            sess.setAttribute("rTok", rTok);
            sess.setAttribute("srv", t);
        } catch (TwitterException e) {
            LOG.error("Twitter error", e);
            throw new IOException(e);
        }
        return rTok.getAuthenticationURL();
    }

    /* (non-Javadoc)
     * @see com.google.code.sagetvaddons.sagealert.shared.TwitterService#submitPin(java.lang.String)
     */
    public TwitterSettings submitPin(String pin) throws IOException {
        HttpSession sess = this.getThreadLocalRequest().getSession(false);
        Twitter t = null;
        RequestToken rTok = null;
        if (sess != null) {
            t = (Twitter) sess.getAttribute("srv");
            rTok = (RequestToken) sess.getAttribute("rTok");
        }
        if (t == null || rTok == null)
            throw new IOException("Cannot submit PIN before generating RequestToken!");
        try {
            AccessToken aTok = t.getOAuthAccessToken(rTok, pin);
            TwitterSettings settings = new TwitterSettings(aTok.getScreenName(), aTok.getToken(),
                    aTok.getTokenSecret());
            DataStore.getInstance().saveReporter(settings);
            return settings;
        } catch (TwitterException e) {
            LOG.error("Twitter error", e);
            throw new IOException(e);
        }
    }

}