com.eincs.athens.olympus.service.PostWriteService.java Source code

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Here is the source code for com.eincs.athens.olympus.service.PostWriteService.java

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/*
 * Copyright 2012 Athens Team
 * 
 * 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 com.eincs.athens.olympus.service;

import net.rothlee.athens.olympus.mybatis.test.DBManager;

import org.apache.ibatis.session.SqlSession;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.util.CharsetUtil;

import com.eincs.athens.olympus.HeaderNames;
import com.eincs.athens.olympus.TokenNames;
import com.eincs.athens.olympus.Tokens;
import com.eincs.athens.olympus.data.DataUtils;
import com.eincs.athens.olympus.data.Post;
import com.eincs.athens.olympus.data.Session;
import com.eincs.athens.olympus.data.User;
import com.eincs.athens.olympus.db.OlympusMapper;
import com.eincs.pantheon.handler.service.simple.Bind;
import com.eincs.pantheon.handler.service.simple.SimpleService;
import com.eincs.pantheon.message.PanteonContentType;
import com.eincs.pantheon.message.PanteonRequest;
import com.eincs.pantheon.message.PanteonResponse;
import com.eincs.pantheon.utils.token.JSONToken;
import com.eincs.pantheon.utils.token.JSONTokenFactory;

/**
 * @author roth2520@gmail.com
 */
@Bind(path = "/write", method = { "POST" })
public class PostWriteService implements SimpleService {

    @Override
    public void doServe(PanteonRequest request, PanteonResponse response) throws Exception {
        final String content = request.getParams().getParam("content", String.class);
        final String accessTokenString = request.getHeaders().get(HeaderNames.ACCESS_TOKEN);

        final DBManager dbm = DBManager.getInstance();
        final SqlSession session = dbm.openSession();
        final JSONTokenFactory tokenFactory = new JSONTokenFactory();

        try {
            final OlympusMapper mapper = session.getMapper(OlympusMapper.class);
            final JSONToken accessToken = tokenFactory.fromBytes(accessTokenString.getBytes());

            if (!Tokens.verifyToken(accessToken)) {
                String responseString = DataUtils.toResponseStringError("permission denied. invalid token.");
                response.setContentType(PanteonContentType.TEXT_PLAIN);
                response.setContents(ChannelBuffers.copiedBuffer(responseString, CharsetUtil.UTF_8));
                return;
            }

            String email = accessToken.getContent().getString(TokenNames.EMAIL);
            String sessionUuid = accessToken.getContent().getString(TokenNames.SESSION_UUID);

            User user = mapper.getUserByEmail(User.createByEmail(email));
            if (user == null) {
                String responseString = DataUtils.toResponseStringError("permission denied. no such user.");
                response.setContentType(PanteonContentType.TEXT_PLAIN);
                response.setContents(ChannelBuffers.copiedBuffer(responseString, CharsetUtil.UTF_8));
                return;
            }
            Session userSession = mapper.getSessionByUUID(Session.create(sessionUuid));
            if (userSession == null) {
                String responseString = DataUtils.toResponseStringError("permission denied. no such session.");
                response.setContentType(PanteonContentType.TEXT_PLAIN);
                response.setContents(ChannelBuffers.copiedBuffer(responseString, CharsetUtil.UTF_8));
                return;
            }

            final int result = mapper.insertPost(Post.create(user.getId(), content));
            session.commit();

            final String responseString = DataUtils.toResponseString(result > 0);
            response.setContentType(PanteonContentType.TEXT_PLAIN);
            response.setContents(ChannelBuffers.copiedBuffer(responseString, CharsetUtil.UTF_8));

        } finally {
            session.close();
        }
    }
}