HttpClientFactory.java

/*
 * Copyright (C) 2010 mAPPn.Inc
 *
 * 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.lan.nicehair.common;

import java.util.WeakHashMap;

import android.net.http.AndroidHttpClient;

import com.lan.nicehair.utils.AppLog;
import com.lan.nicehair.utils.Utils;

/**
 * This is http client factory class.<br>
 * 
 * You can fetch http client by using get***HttpClient method easily. 
 * 
 * @author andrew.wang
 * @date    2010-9-26
 * @since    Version 0.4.0
 */
public class HttpClientFactory {

    private static final String TAG = "HttpClientFactory";

	private static HttpClientFactory mInstance;
    
    private static String MARKET_CLIENT = "market";
//    private boolean isCMWAP;
    
    private WeakHashMap<String, AndroidHttpClient> mHttpClientMap;
    
    private HttpClientFactory() {
        synchronized (this) {
            mHttpClientMap = new WeakHashMap<String, AndroidHttpClient>(1);
        }
    }
    
    public static HttpClientFactory get() {
        if (mInstance == null) {
            mInstance = new HttpClientFactory();
        }
        return mInstance;
    }
    
    /**
     * Get the http client for MARKET module
     * @param userAgent customize user agent
     * @return android http client contains some default settings for android device
     */
    public AndroidHttpClient getHttpClient() {
        
        AndroidHttpClient client = mHttpClientMap.get(MARKET_CLIENT);
        if(client != null) {
//            if (isCMWAP) {
//                client.useCmwapConnection();
//            } else {
//                client.useDefaultConnection();
//            }
            return client;
        }
        
        client = AndroidHttpClient.newInstance("");
//        if (isCMWAP) {
//            client.useCmwapConnection();
//        } else {
//            client.useDefaultConnection();
//        }
        mHttpClientMap.put(MARKET_CLIENT, client);
        return client;
    }
    
    /**
     * update the G-Header
     * @param gHeader
     */
    public void updateMarketHeader(String gHeader) {
        AndroidHttpClient client = mHttpClientMap.get(MARKET_CLIENT);
        if(client != null) {
            client.getParams().setParameter("G-Header", gHeader);
            AppLog.d(TAG,"update client " + client.toString() + " g-header " + gHeader);
        }
    }
    
//    /**
//     * 使用CMWAP网络
//     */
//    public void setCmwapConnection() {
//        isCMWAP = true;
//    }
    
    /**
     * Must close all http clients when application is closed
     */
    public synchronized void close() {
        AndroidHttpClient client;
        if (mHttpClientMap.containsKey(MARKET_CLIENT)) {
            client = mHttpClientMap.get(MARKET_CLIENT);
            if (client != null) {
                client.close();
                client = null;
            }
        }
        mHttpClientMap.clear();
        mInstance = null;
    }
}