Home | History | Annotate | Download | only in tests 
      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.framework.tests;
     17 
     18 import com.android.tradefed.device.DeviceNotAvailableException;
     19 import com.android.tradefed.device.ITestDevice;
     20 import com.android.tradefed.log.LogUtil.CLog;
     21 import com.android.tradefed.util.StreamUtil;
     22 
     23 import java.io.File;
     24 import java.io.FileInputStream;
     25 import java.io.IOException;
     26 import java.util.HashMap;
     27 import java.util.Map;
     28 
     29 public class BandwidthUtils {
     30 
     31     private BandwidthStats mDevStats;
     32     private Map<Integer, BandwidthStats> mUidStats = new HashMap<Integer, BandwidthStats>();
     33     private String mIface;
     34     ITestDevice mTestDevice = null;
     35 
     36     BandwidthUtils(ITestDevice device, String iface) throws DeviceNotAvailableException {
     37         mTestDevice = device;
     38         mIface = iface;
     39         parseUidStats();
     40         parseNetDevStats();
     41     }
     42 
     43     public BandwidthStats getStatsForUid(int uid) {
     44         return mUidStats.get(uid);
     45     }
     46 
     47     public BandwidthStats getDevStats() {
     48         return mDevStats;
     49     }
     50 
     51     public BandwidthStats getSumOfUidStats() {
     52         long rb = 0, rp = 0, tb = 0, tp = 0;
     53         for (BandwidthStats stats : mUidStats.values()) {
     54             rb += stats.getRxBytes();
     55             rp += stats.getRxPackets();
     56             tb += stats.getTxBytes();
     57             tp += stats.getTxPackets();
     58         }
     59         return new BandwidthStats(rb, rp, tb, tp);
     60     }
     61 
     62     /**
     63      * Parses the uid stats from /proc/net/xt_qtaguid/stats
     64      * @throws DeviceNotAvailableException
     65      */
     66     private void parseUidStats() throws DeviceNotAvailableException {
     67         File statsFile = mTestDevice.pullFile("/proc/net/xt_qtaguid/stats");
     68         FileInputStream fStream = null;
     69         try {
     70             fStream = new FileInputStream(statsFile);
     71             String tmp = StreamUtil.getStringFromStream(fStream);
     72             String[] lines = tmp.split("\n");
     73             for (String line : lines) {
     74                 if (line.contains("idx")) {
     75                     continue;
     76                 }
     77                 String[] parts = line.trim().split(" ");
     78                 String iface = parts[1];
     79                 if (!mIface.equals(iface)) {  // skip if its not iface we need
     80                     continue;
     81                 }
     82                 String foreground = parts[4];
     83                 if (!"0".equals(foreground)) { // test uses background data, skip foreground
     84                     continue;
     85                 }
     86                 String tag = parts[2];
     87                 int uid = Integer.parseInt(parts[3]);
     88                 int rb = Integer.parseInt(parts[5]);
     89                 int rp = Integer.parseInt(parts[6]);
     90                 int tb = Integer.parseInt(parts[7]);
     91                 int tp = Integer.parseInt(parts[8]);
     92                 if ("0x0".equals(tag)) {
     93                     CLog.v("qtag iface %s pid %d rb %d rp %d tb %d tp %d",
     94                             iface, uid, rb, rp, tb, tp);
     95                     mUidStats.put(uid, new BandwidthStats(rb, rp, tb, tp));
     96                 }
     97             }
     98         } catch (IOException e) {
     99             CLog.d("Failed to read file %s: %s", statsFile.toString(), e.getMessage());
    100         } finally {
    101             StreamUtil.close(fStream);
    102         }
    103     }
    104 
    105     /**
    106      * Add stats, if the iface is currently active or it is an unknown iface found in /proc/net/dev.
    107      * @throws DeviceNotAvailableException
    108      */
    109     private void parseNetDevStats() throws DeviceNotAvailableException {
    110         File file = mTestDevice.pullFile("/proc/net/dev");
    111         FileInputStream fStream = null;
    112         try {
    113             fStream = new FileInputStream(file);
    114             String tmp = StreamUtil.getStringFromStream(fStream);
    115             String[] lines = tmp.split("\n");
    116             for (String line : lines) {
    117                 if (line.contains("Receive") || line.contains("multicast")) {
    118                     continue;
    119                 }
    120                 String[] parts = line.trim().split("[ :]+");
    121                 String iface = parts[0].replace(":", "").trim();
    122                 if (mIface.equals(iface)) {
    123                     int rb = Integer.parseInt(parts[1]);
    124                     int rp = Integer.parseInt(parts[2]);
    125                     int tb = Integer.parseInt(parts[9]);
    126                     int tp = Integer.parseInt(parts[10]);
    127                     CLog.v("net iface %s rb %d rp %d tb %d tp %d", iface, rb, rp, tb, tp);
    128                     mDevStats = new BandwidthStats(rb, rp, tb, tp);
    129                     break;
    130                 }
    131             }
    132         } catch (IOException e) {
    133             CLog.d("Failed to read file %s: %s", file.toString(), e.getMessage());
    134         } finally {
    135             StreamUtil.close(fStream);
    136         }
    137     }
    138 }
    139