com.vinaysshenoy.easyoauth.http.HttpManager.java Source code

Introduction

Here is the source code for com.vinaysshenoy.easyoauth.http.HttpManager.java

Source

/*Copyright 2012 Vinay S Shenoy
    
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.vinaysshenoy.easyoauth.http;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.client.params.HttpClientParams;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;

/**
 * Class that manages Http connections and requests
 * @author Vinay S Shenoy, Nov 11 2012
 *
 */
public class HttpManager {

    /**
     * Debug tag
     */
    @SuppressWarnings("unused")
    private static final String TAG = HttpManager.class.getCanonicalName();

    /**
     * DefaultHttpClient Object.
     */
    private DefaultHttpClient mHttpClient;

    /**
     * Http configuration
     */
    private HttpConfig mHttpConfig;

    public HttpManager(HttpConfig config) {

        this.mHttpConfig = config;
        initHttpClient();
    }

    private void initHttpClient() {

        HttpParams params = new BasicHttpParams();

        HttpProtocolParams.setUserAgent(params, mHttpConfig.userAgent);
        HttpProtocolParams.setVersion(params, mHttpConfig.httpVersion);
        HttpProtocolParams.setContentCharset(params, mHttpConfig.contentCharset);

        HttpConnectionParams.setStaleCheckingEnabled(params, mHttpConfig.enableStaleChecking);
        HttpConnectionParams.setConnectionTimeout(params, mHttpConfig.connectionTimeout);
        HttpConnectionParams.setSoTimeout(params, mHttpConfig.socketTimeout);
        HttpConnectionParams.setSocketBufferSize(params, mHttpConfig.socketBufferSize);

        HttpClientParams.setRedirecting(params, mHttpConfig.isRedirecting);

        SchemeRegistry schemeRegistry = new SchemeRegistry();
        schemeRegistry.register(
                new Scheme(HttpConfig.KEY_HTTP, PlainSocketFactory.getSocketFactory(), mHttpConfig.httpPort));
        schemeRegistry.register(
                new Scheme(HttpConfig.KEY_HTTPS, SSLSocketFactory.getSocketFactory(), mHttpConfig.httpsPort));

        ClientConnectionManager manager = new ThreadSafeClientConnManager(params, schemeRegistry);
        mHttpClient = new DefaultHttpClient(manager, params);
    }

    /**
     * Execute an HttpRequest and get the response as a stream
     * @param request The HttpRequest to be executed
     * @return the response as an inputstream, or null if the 
     * response statusline was not set
     * @throws IOException
     * @throws IllegalStateException
     */
    public InputStream executeHttpRequestForStreamResponse(HttpRequestBase request)
            throws IOException, IllegalStateException {

        HttpResponse httpRes = mHttpClient.execute(request);
        StatusLine statusLine = httpRes.getStatusLine();
        if (statusLine != null) {
            HttpEntity entity = httpRes.getEntity();
            return entity.getContent();
        }
        return null;

    }

    /**
     * Execute an HttpRequest and get the response as a String
     * @param request The HttpRequest to be executed
     * @return the response as String, or null if the 
     * response statusline was not set
     * @throws IOException
     * @throws IllegalStateException
     */
    public String executeHttpRequestForStringResponse(HttpRequestBase request)
            throws IOException, IllegalStateException {

        HttpResponse httpRes = mHttpClient.execute(request);
        StatusLine statusLine = httpRes.getStatusLine();

        InputStream is = null;

        if (statusLine != null) {
            HttpEntity entity = httpRes.getEntity();
            is = entity.getContent();

            if (is != null) {

                BufferedReader reader = new BufferedReader(new InputStreamReader(is));
                StringBuilder response = new StringBuilder();
                String line;
                while ((line = reader.readLine()) != null) {
                    response.append(line);
                }

                is.close();
                reader.close();

                return response.toString();
            }
        }
        return null;

    }

    public void destroy() {

        mHttpClient = null;

    }

}