jp.dip.komusubi.botter.util.BitlyUrlUtil.java Source code

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Here is the source code for jp.dip.komusubi.botter.util.BitlyUrlUtil.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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 jp.dip.komusubi.botter.util;

import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import jp.dip.komusubi.botter.BotterException;
import jp.dip.komusubi.botter.UrlUtil;

import org.apache.commons.codec.EncoderException;
import org.apache.commons.codec.net.URLCodec;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author jun.ozeki
 * @version $Id: BitlyUrlUtil.java 1345 2010-07-18 14:31:51Z jun $
 * @since 2010/07/18
 */
public class BitlyUrlUtil implements UrlUtil {
    private static final Logger logger = LoggerFactory.getLogger(BitlyUrlUtil.class);
    private static final String BASE_URL = "http://api.bit.ly";
    private static final String API_VERSION = "v3";
    private static final String SERVICE_URL = BASE_URL + "/" + API_VERSION;
    private static final String SHORTEN_SERVICE_PATH = "shorten";
    private static final String SHORTEN_SERVICE_URL = SERVICE_URL + "/" + SHORTEN_SERVICE_PATH;
    private static final String PARAMETER_NAME_API_KEY = "apiKey";
    private static final String PARAMETER_NAME_LOGIN = "login";
    private static final String PARAMETER_NAME_FORMAT = "format";
    private static final String PARAMETER_NAME_LONGURL = "longUrl";
    private Map<String, String> parameters = new HashMap<String, String>();

    /**
     * 
     * @param id
     * @param password
     */
    public BitlyUrlUtil(String id, String apiKey) {
        parameters.put(PARAMETER_NAME_LOGIN, id);
        parameters.put(PARAMETER_NAME_API_KEY, apiKey);
        parameters.put(PARAMETER_NAME_FORMAT, "txt");
    }

    @Override
    public String shorten(String url) {
        parameters.put(PARAMETER_NAME_LONGURL, url);
        StringBuilder builder = new StringBuilder(SHORTEN_SERVICE_URL);
        URLCodec codec = new URLCodec();

        String responseLine = null;
        boolean done = false;
        for (Entry<String, String> entry : parameters.entrySet()) {
            if (done == false) {
                builder.append("?");
                done = true;
            } else {
                builder.append("&");
            }
            try {
                builder.append(codec.encode(entry.getKey())).append("=").append(codec.encode(entry.getValue()));
            } catch (EncoderException e) {
                throw new BotterException(e);
            }
        }
        responseLine = UrlAccessDelegate.readFirstLine(builder.toString());
        if (responseLine == null)
            logger.warn("bit.ly response is null, URL is :{}", builder.toString());
        return responseLine;
    }

    @Override
    public String shorten(URL url) {
        return shorten(url.toExternalForm());
    }

}