com.jimdo.graylog.net.Request.java Source code

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Here is the source code for com.jimdo.graylog.net.Request.java

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/*
Yaaic - Yet Another Android IRC Client
    
Copyright 2009 Sebastian Kaspari
    
This file is part of Yaaic.
    
Yaaic is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
Yaaic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with Yaaic.  If not, see <http://www.gnu.org/licenses/>.
*/
package com.jimdo.graylog.net;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.zip.GZIPInputStream;

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.DefaultHttpClient;

import android.util.Log;

/**
 * Do an API Request via HTTP
 *
 * @author Sebastian Kaspari <s.kaspari@googlemail.com>
 */
public class Request {
    private static final String TAG = "Graylog/Request";
    private static Request instance;

    private DefaultHttpClient httpClient;

    /**
     * Private constructor
     */
    private Request() {
        this.httpClient = new DefaultHttpClient();
    }

    /**
     * Create a new Request Instance
     */
    public static Request createInstance() {
        return instance = new Request();
    }

    /**
     * Get Request Instance
     * 
     * @return
     */
    public static Request getInstance() {
        if (instance == null) {
            instance = createInstance();
        }

        return instance;
    }

    /**
     * Set Credentials for HTTPAuth
     */
    public void setHttpAuth(String username, String password) {
        UsernamePasswordCredentials credentials = new UsernamePasswordCredentials(username, password);

        BasicCredentialsProvider credentialsProvider = new BasicCredentialsProvider();
        credentialsProvider.setCredentials(AuthScope.ANY, credentials);

        httpClient.setCredentialsProvider(credentialsProvider);
    }

    /**
     * Execute a request
     * 
     * @param url
     * @return Content of the response
     */
    public String execute(String url) {
        Log.d(TAG, "Request to " + url);

        try {
            HttpGet getRequest = new HttpGet(url);
            HttpResponse response = (HttpResponse) httpClient.execute(getRequest);

            HttpEntity entity = response.getEntity();

            if (entity != null) {
                InputStream stream = entity.getContent();
                Header contentEncoding = response.getFirstHeader("Content-Encoding");
                if (contentEncoding != null && contentEncoding.getValue().equalsIgnoreCase("gzip")) {
                    stream = new GZIPInputStream(stream);
                }

                BufferedReader reader = new BufferedReader(new InputStreamReader(stream));

                StringBuffer sb = new StringBuffer();

                String line = null;

                while (null != (line = reader.readLine())) {
                    sb.append(line + "\n");
                }

                //Log.d(TAG, "Response: " + sb);

                return sb.toString().trim();
            }
        } catch (Exception e) {
            Log.d(TAG, "Exception: " + e.getMessage());
        }

        return null;
    }
}