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      1 /*
      2  * Copyright (C) 2018 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 
     17 package com.android.tradefed.device;
     18 
     19 import com.android.ddmlib.AdbCommandRejectedException;
     20 import com.android.ddmlib.IDevice;
     21 import com.android.ddmlib.MultiLineReceiver;
     22 import com.android.ddmlib.ShellCommandUnresponsiveException;
     23 import com.android.ddmlib.TimeoutException;
     24 import com.android.tradefed.log.LogUtil.CLog;
     25 
     26 import java.io.IOException;
     27 import java.util.regex.Matcher;
     28 import java.util.regex.Pattern;
     29 
     30 public class BatteryTemperature implements IBatteryTemperature {
     31 
     32     /** Parse the output of "adb shell dumpsys battery" to collect the temperature. */
     33     class DumpsysBatteryTemperatureReceiver extends MultiLineReceiver {
     34         /*
     35          * The temperature is printed as numeric value in tenths of a degree, i.e.
     36          * 512 indicates 51.2C.
     37          */
     38         private static final int DUMPSYS_BATTERY_TEMP_SCALE = 10;
     39 
     40         /* The temperature is listed on a single line, like "temperature: 512" */
     41         private static final String BATTERY_REGEX = "temperature: ([0-9]+)";
     42 
     43         private int mDeviceBatteryTemp = 0;
     44 
     45         public int getDeviceBatteryTemp() {
     46             return mDeviceBatteryTemp;
     47         }
     48 
     49         @Override
     50         public boolean isCancelled() {
     51             return false;
     52         }
     53 
     54         @Override
     55         public void processNewLines(String[] lines) {
     56             for (String line : lines) {
     57                 Pattern p = Pattern.compile(BATTERY_REGEX);
     58                 Matcher m = p.matcher(line);
     59                 if (m.find()) {
     60                     String tempString = m.group(1);
     61                     try {
     62                         mDeviceBatteryTemp = Integer.parseInt(tempString);
     63                         mDeviceBatteryTemp /= DUMPSYS_BATTERY_TEMP_SCALE;
     64                     } catch (NumberFormatException e) {
     65                         CLog.w("Failed to parse battery temperature: %s", line);
     66                     }
     67                 }
     68             }
     69         }
     70     }
     71 
     72     @Override
     73     public Integer getBatteryTemperature(IDevice device) {
     74         DumpsysBatteryTemperatureReceiver receiver = new DumpsysBatteryTemperatureReceiver();
     75 
     76         try {
     77             device.executeShellCommand("dumpsys battery", receiver);
     78         } catch (TimeoutException
     79                 | AdbCommandRejectedException
     80                 | ShellCommandUnresponsiveException
     81                 | IOException e) {
     82             return 0;
     83         }
     84 
     85         return receiver.getDeviceBatteryTemp();
     86     }
     87 }
     88