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/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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.android.dumpeventlog;
import com.android.ddmlib.AdbCommandRejectedException;
import com.android.ddmlib.AndroidDebugBridge;
import com.android.ddmlib.IDevice;
import com.android.ddmlib.Log;
import com.android.ddmlib.TimeoutException;
import com.android.ddmlib.Log.ILogOutput;
import com.android.ddmlib.Log.LogLevel;
import com.android.ddmlib.log.LogReceiver;
import com.android.ddmlib.log.LogReceiver.ILogListener;
import com.android.ddmlib.log.LogReceiver.LogEntry;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
/**
* Connects to a device using ddmlib and dumps its event log as long as the device is connected.
*/
public class DumpEventLog {
/**
* Custom {@link ILogListener} to receive and save the event log raw output.
*/
private static class LogWriter implements ILogListener {
private FileOutputStream mOutputStream;
private LogReceiver mReceiver;
public LogWriter(String filePath) throws IOException {
mOutputStream = new FileOutputStream(filePath);
}
public void newData(byte[] data, int offset, int length) {
try {
mOutputStream.write(data, offset, length);
} catch (IOException e) {
if (mReceiver != null) {
mReceiver.cancel();
}
System.out.println(e);
}
}
public void newEntry(LogEntry entry) {
// pass
}
public void setReceiver(LogReceiver receiver) {
mReceiver = receiver;
}
public void done() throws IOException {
mOutputStream.close();
}
}
public static void main(String[] args) {
if (args.length != 2) {
System.out.println("Usage: dumpeventlog <device s/n> <filepath>");
return;
}
// redirect the log output to /dev/null
Log.setLogOutput(new ILogOutput() {
public void printAndPromptLog(LogLevel logLevel, String tag, String message) {
// pass
}
public void printLog(LogLevel logLevel, String tag, String message) {
// pass
}
});
// init the lib
AndroidDebugBridge.init(false /* debugger support */);
try {
AndroidDebugBridge bridge = AndroidDebugBridge.createBridge();
// we can't just ask for the device list right away, as the internal thread getting
// them from ADB may not be done getting the first list.
// Since we don't really want getDevices() to be blocking, we wait here manually.
int count = 0;
while (bridge.hasInitialDeviceList() == false) {
try {
Thread.sleep(100);
count++;
} catch (InterruptedException e) {
// pass
}
// let's not wait > 10 sec.
if (count > 100) {
System.err.println("Timeout getting device list!");
return;
}
}
// now get the devices
IDevice[] devices = bridge.getDevices();
for (IDevice device : devices) {
if (device.getSerialNumber().equals(args[0])) {
try {
grabLogFrom(device, args[1]);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return;
}
}
System.err.println("Could not find " + args[0]);
} finally {
AndroidDebugBridge.terminate();
}
}
private static void grabLogFrom(IDevice device, String filePath) throws IOException,
TimeoutException, AdbCommandRejectedException {
LogWriter writer = new LogWriter(filePath);
LogReceiver receiver = new LogReceiver(writer);
writer.setReceiver(receiver);
device.runEventLogService(receiver);
writer.done();
}
}
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