Android Open Source - android_monitor App Data Usage Collector

• Back to Timer/monitor  ↑

From Project

Back to project page android_monitor.

License

The source code is released under:

GNU General Public License

Java Source Code

/*******************************************************************************
 * Copyright (C) 2014 MUSE team Inria Paris - Rocquencourt
 * /*from  w w  w.j a  v a 2s. c o m*/
 * This file is part of UCNDataCollector.
 * 
 * UCNDataCollector is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * UCNDataCollector 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 Affero Public License for more details.
 * 
 * You should have received a copy of the GNU Affero Public License
 * along with UCNDataCollector.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package fr.inria.ucn.collectors;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import fr.inria.ucn.Constants;
import fr.inria.ucn.Helpers;

import android.annotation.SuppressLint;
import android.app.ActivityManager;
import android.content.Context;
import android.net.TrafficStats;
import android.util.Log;

/**
 * Bytes send/recv per app.
 * 
 * @author Anna-Kaisa Pietilainen <anna-kaisa.pietilainen@inria.fr>
 *
 */
public class AppDataUsageCollector implements Collector {

  private static final String PROC_UID_STAT = "/proc/uid_stat";

  /* (non-Javadoc)
   * @see fr.inria.ucn.collectors.Collector#run(android.content.Context)
   */
  @Override
  public void run(Context c, long ts) {  
    try {
      // data used per app
      JSONArray parray = new JSONArray();
      
      File f = new File(PROC_UID_STAT);
      if (f.exists() && f.isDirectory() && f.canRead()) {
        for (String dir: f.list()) {
          parray.put(getProcInfo(c, Integer.parseInt(dir)));
        }
      } else {
        ActivityManager am = (ActivityManager) c.getSystemService(Context.ACTIVITY_SERVICE);
        for (ActivityManager.RunningAppProcessInfo pinfo : am.getRunningAppProcesses()) {
          parray.put(getProcInfo(c, pinfo.uid));          
        }
      }
      
      // done
      Helpers.sendResultObj(c,"app_data_usage", ts, new JSONObject().put("process_list", parray));
      
    } catch (JSONException jex) {
      Log.w(Constants.LOGTAG, "failed to create json object",jex);
    }    
  }
  
  /* Build process info object. */
  @SuppressWarnings("deprecation")
  @SuppressLint("NewApi")
  private JSONObject getProcInfo(Context c, int uid) throws JSONException {
    // uid + related package list
    JSONObject pinfo = new JSONObject();
    pinfo.put("uid", uid);
    pinfo.put("packages", Helpers.getPackagesForUid(c,uid));
    
    // simple TCP stats
    JSONObject tcp = new JSONObject();
    tcp.put("send", getSysLongValue(PROC_UID_STAT + "/" +uid+ "/tcp_snd"));
    tcp.put("recv", getSysLongValue(PROC_UID_STAT + "/" +uid+ "/tcp_rcv"));
    pinfo.put("proc_uid_stat_tcp",tcp);
    
    // complete traffic stats (may not be available)
    JSONObject tstat = new JSONObject();
    tstat.put("uid_rx_bytes", TrafficStats.getUidRxBytes(uid));
    tstat.put("uid_tx_bytes", TrafficStats.getUidTxBytes(uid));
    
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB_MR1) {
      tstat.put("uid_rx_pkts", TrafficStats.getUidRxPackets(uid));
      tstat.put("uid_tx_pkts", TrafficStats.getUidTxPackets(uid));
      tstat.put("uid_tcp_rx_pkts", TrafficStats.getUidTcpRxSegments(uid));
      tstat.put("uid_tcp_tx_pkts", TrafficStats.getUidTcpTxSegments(uid));
      tstat.put("uid_udp_rx_pkts", TrafficStats.getUidUdpRxPackets(uid));
      tstat.put("uid_udp_tx_pkts", TrafficStats.getUidUdpTxPackets(uid));
      tstat.put("uid_udp_rx_bytes", TrafficStats.getUidUdpRxBytes(uid));
      tstat.put("uid_udp_tx_bytes", TrafficStats.getUidUdpTxBytes(uid));
      tstat.put("uid_tcp_rx_bytes", TrafficStats.getUidTcpRxBytes(uid));
      tstat.put("uid_tcp_tx_bytes", TrafficStats.getUidTcpTxBytes(uid));
    }
    
    pinfo.put("android_traffic_stats", tstat);          
    return pinfo;
  }
  
  /* Read a long value from a proc file. */
  private long getSysLongValue(String name) {
    long res = -1;
    File f = new File(name);
    try {
      BufferedReader br = new BufferedReader(new FileReader(f));
      String value = br.readLine().trim();
      br.close();
      if (value!=null && value.length()>0) {
        res = Long.parseLong(value);
      }
    } catch (FileNotFoundException e) {
    } catch (IOException e) {
    } catch (NumberFormatException e) {      
    }
    return res;
  }
}

Java Source Code List

• Back to Timer/monitor  ↑