目录介绍
- 1.业务需求
- 2.目前有那些做法及问题
- 3.自定义log工具类，一边打印日志一边写入文件
- 4.在application开启线程池进行日志打印
- 5.写一个service将系统日志写到文件
关于链接
1.业务需求
- 要求将app的系统日志都写入到指定的文件目录下的文件中
- 要求写入文件达到一定大小后自动切换到下一个文件夹
- 要求app在运行时，持续将日志写到文件中
- 要求可以清除7天或者n天之前的日志文件
- 要求有sd卡，写日志到sd卡文件；没有则写到内存卡；如果从无sd卡到有sd卡，那么可以切换路径
- 关于代码地址可以参考：https://github.com/yangchong211/YCAudioPlayer
2.目前有那些做法及问题
- 1.自定义log工具类，在输出日志的时候，可以将输出日志写到文件夹。不过只能记录priority5中状态日志
- 2.在application开启线程池，然后调用PrintToFileUtil类(自己写的工具类)中setPrint方法。存在问题：app一直开启状态下，无法持续打印，还未找到原因
- 3.开启app时，打开service服务，当app进程不杀死时，或者service不销毁时，会一直运行在后台，那么也可以处理打印日志逻辑。并且通过广播可以监听sd状态来达到切换日志路径的目的
3.自定义log工具类，一边打印日志一边写入文件
- 3.1 直接调用代码如下所示：
public static void e(String msg) {
if (isDebug){
Log.e(TAG, msg);
PrintToFileUtil.input2File(msg,"path");
}
}- 3.2 工具类如下所示
/**
* 将内容直接写过文件中，自己设置路径
* 这个是一边打印日志，一边将日志写入到file
* 不建议直接new一个子线程做写入逻辑，建议开启线程池，避免到处开启线程损耗性能
* @param input 写入内容
* @param filePath 路径
* @return
*/
static boolean input2File(final String input, final String filePath) {
if (sExecutor == null) {
sExecutor = Executors.newScheduledThreadPool(5);
}
Future<Boolean> submit = sExecutor.submit(new Callable<Boolean>() {
@Override
public Boolean call() throws Exception {
BufferedWriter bw = null;
try {
// 构造给定文件名的FileWriter对象，并使用布尔值指示是否追加写入的数据。
FileWriter fileWriter = new FileWriter(filePath, true);
bw = new BufferedWriter(fileWriter);
bw.write(input);
return true;
} catch (IOException e) {
e.printStackTrace();
return false;
} finally {
try {
if (bw != null) {
bw.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
});
try {
return submit.get();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
return false;
}4.在application开启线程池进行日志打印
/**
* 遇到问题：
* 1.什么时候调用这个方法？
* 2.为什么调用这个方法会造成程序无响应，卡在什么地方？
* 3.如何避免造成线程堵塞
* 4.当打印到一定日志后，如何切换到下一个.txt文件？
* @param logPath
*/
public static void setPrint(String logPath){
if (sExecutor == null) {
sExecutor = Executors.newScheduledThreadPool(5);
}
//以xx月xx日为命名文件名，这样每天的文件都是不一样的
Date now = new Date(System.currentTimeMillis());
String format = FORMAT.format(now);
String date = format.substring(0, 5);
final String newLogPath = logPath +date;
Future<Boolean> submit = sExecutor.submit(new Callable<Boolean>() {
@Override
public Boolean call() throws Exception {
/*核心代码*/
while(captureLogThreadOpen){
/*命令的准备*/
ArrayList<String> getLog = new ArrayList<>();
getLog.add("logcat");
getLog.add("-d");
getLog.add("-v");
getLog.add("time");
ArrayList<String> clearLog = new ArrayList<>();
clearLog.add("logcat");
clearLog.add("-c");
try{
//抓取当前的缓存日志
Process process = Runtime.getRuntime().exec(getLog.toArray(new String[getLog.size()]));
//获取输入流
BufferedReader buffRead = new BufferedReader(new InputStreamReader(process.getInputStream()));
//清除是为了下次抓取不会从头抓取
Runtime.getRuntime().exec(clearLog.toArray(new String[clearLog.size()]));
String str = null;
//打开文件
File logFile = new File(newLogPath + "log.txt");
//true表示在写的时候在文件末尾追加
FileOutputStream fos = new FileOutputStream(logFile, true);
//换行的字符串
String newline = System.getProperty("line.separator");
//Date date = new Date(System.currentTimeMillis());
//String time = format.format(date);
//Log.i(TAG, "thread");
//打印设备信息
fos.write(printDeviceInfo().getBytes());
while((str=buffRead.readLine())!=null){ //循环读取每一行
//Runtime.getRuntime().exec(clearLog.toArray(new String[clearLog.size()]));
//Log.i(TAG, str);
@SuppressLint("SimpleDateFormat")
Date date = new Date(System.currentTimeMillis());
String time = FORMAT.format(date);
//加上年
fos.write((time + str).getBytes());
//换行
fos.write(newline.getBytes());
logCount++;
//大于100000行就退出
if(logCount>100000){
captureLogThreadOpen = false;
fos.close();
break;
}
}
fos.close();
String[] strings = clearLog.toArray(new String[clearLog.size()]);
Runtime.getRuntime().exec(strings);
return true;
}catch(Exception e){
e.printStackTrace();
return false;
}
}
return true;
}
});
try {
submit.get();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
}5.写一个service将系统日志写到文件
-
5.1 文档要点
- 1.支持自定义设置日志写入的路径和文件名称；
- 2.如果有sd卡，那么就记录在sd卡中；否则记录到内存卡中；
- 3.如果之前日志记录在内存卡中，后期有sd卡，那么会将之前内存中的文件拷贝到SDCard中
- 4.可以监听sd卡装载和卸载广播，从而切换保存日志的保存路径
- 5.sd卡中可以设置日志保存的最长周期，目前设置为7天
- 6.当写入日志的文件大于自定义最大值(目前是10M)，可以自动切换到下一个文件夹
- 7.支持清除日志缓存，每次记录日志之前先清除日志的缓存, 不然会在两个日志文件中记录重复的日志
- 8.收集的日志包括：d，v，e，w，c
- 9.支持超出最长保存日期后自动删除文件逻辑，删除逻辑是：取以日期命名的文件名称与当前时间比较
- 10.app开启的时候打开该服务service，那么service在运行的时候会一直记录日志并且写到文件，除非杀死服务
- 11.建议日志命名按照日期命名，方便处理删除逻辑
-
5.2 具体的实现代码
- 5.2.1 在清单文件注册
<service android:name=".service.LogService" /> <!--系统日志权限--> <uses-permission android:name="android.permission.READ_LOGS" /> <uses-permission android:name="android.permission.WAKE_LOCK" />
-
- 5.2.2 关于logService代码如下
public class LogService extends Service {
//日志
private static final String TAG = "LogService";
//内存中日志文件最大值，10M
private static final int MEMORY_LOG_FILE_MAX_SIZE = 10 * 1024 * 1024;
//内存中的日志文件大小监控时间间隔，10分钟
private static final int MEMORY_LOG_FILE_MONITOR_INTERVAL = 10 * 60 * 1000;
//sd卡中日志文件的最多保存天数
private static final int SDCARD_LOG_FILE_SAVE_DAYS = 7;
//日志文件在内存中的路径(日志文件在安装目录中的路径)
private String LOG_PATH_MEMORY_DIR;
//日志文件在sdcard中的路径【主要这个很重要】
private String LOG_PATH_SDCARD_DIR;
//当前的日志记录类型为存储在SD卡下面
private final int SDCARD_TYPE = 0;
//当前的日志记录类型为存储在内存中
private final int MEMORY_TYPE = 1;
//当前的日志记录类型，默认是SD卡
private int CURR_LOG_TYPE = SDCARD_TYPE;
//如果当前的日志写在内存中，记录当前的日志文件名称
private String CURR_INSTALL_LOG_NAME;
//本服务输出的日志文件名称，也可以是txt格式，或者后缀名是.log
private String logServiceLogName = "Log.log";
@SuppressLint("SimpleDateFormat")
private SimpleDateFormat myLogSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
//日志名称格式
@SuppressLint("SimpleDateFormat")
private SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH时mm分ss秒");
private OutputStreamWriter writer ;
private Process process;
//唤醒
private PowerManager.WakeLock wakeLock;
//SDCard状态监测，广播监听sd卡动态，比如用户拔下sd卡
private SDStateMonitorReceiver sdStateReceiver;
private LogTaskReceiver logTaskReceiver;
/* 是否正在监测日志文件大小；
* 如果当前日志记录在SDard中则为false
* 如果当前日志记录在内存中则为true*/
private boolean logSizeMoniting = false;
//日志文件监测action
private static String MONITOR_LOG_SIZE_ACTION = "MONITOR_LOG_SIZE";
//切换日志文件action
private static String SWITCH_LOG_FILE_ACTION = "SWITCH_LOG_FILE_ACTION";
/**
* 无需绑定
* @param intent intent
* @return IBinder对象
*/
@Override
public IBinder onBind(Intent intent) {
return null;
}
/**
* 销毁时调用该方法
*/
@Override
public void onDestroy() {
super.onDestroy();
recordLogServiceLog("LogService onDestroy");
if (writer != null) {
try {
writer.close();
writer = null;
} catch (IOException e) {
e.printStackTrace();
}
}
if (process != null) {
process.destroy();
}
//注意需要注销广播
if(sdStateReceiver!=null){
unregisterReceiver(sdStateReceiver);
}
if(logTaskReceiver!=null){
unregisterReceiver(logTaskReceiver);
}
}
/**
* 每次开启service时，都会调用一次该方法，用于初始化
*/
@Override
public void onCreate() {
super.onCreate();
init();
register();
deploySwitchLogFileTask();
new LogCollectorThread().start();
}
private void init(){
//日志文件在内存中的路径(日志文件在安装目录中的路径)
LOG_PATH_MEMORY_DIR = getFilesDir().getAbsolutePath() + File.separator + "log";
//本服务产生的日志，记录日志服务开启失败信息
String LOG_SERVICE_LOG_PATH = LOG_PATH_MEMORY_DIR + File.separator + logServiceLogName;
//日志文件在sdcard中的路径
LOG_PATH_SDCARD_DIR = FileUtils.getLocalRootSavePathDir("logger")+ File.separator + "log";
//创建log文件夹
createLogDir();
try {
//true 表示可以接着写入
FileOutputStream fos = new FileOutputStream(LOG_SERVICE_LOG_PATH, true);
writer = new OutputStreamWriter(fos);
} catch (FileNotFoundException e) {
Log.e(TAG, e.getMessage(), e);
}
//获取PowerManager管理者
PowerManager pm = (PowerManager) getApplicationContext().getSystemService(Context.POWER_SERVICE);
if (pm != null) {
wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
}
//当前的日志记录类型
CURR_LOG_TYPE = getCurrLogType();
Log.i(TAG, "LogService onCreate");
}
private void register(){
IntentFilter sdCarMonitorFilter = new IntentFilter();
sdCarMonitorFilter.addAction(Intent.ACTION_MEDIA_MOUNTED);
sdCarMonitorFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
sdCarMonitorFilter.addDataScheme("file");
sdStateReceiver = new SDStateMonitorReceiver();
registerReceiver(sdStateReceiver, sdCarMonitorFilter);
IntentFilter logTaskFilter = new IntentFilter();
logTaskFilter.addAction(MONITOR_LOG_SIZE_ACTION);
logTaskFilter.addAction(SWITCH_LOG_FILE_ACTION);
logTaskReceiver = new LogTaskReceiver();
registerReceiver(logTaskReceiver,logTaskFilter);
}
/**
* 获取当前应存储在内存中还是存储在SDCard中
* @return 如果有sd卡，就放到sd卡中；没有则放到内存卡中
*/
public int getCurrLogType(){
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
return MEMORY_TYPE;
}else{
return SDCARD_TYPE;
}
}
/**
* 部署日志切换任务，每天凌晨切换日志文件
*/
private void deploySwitchLogFileTask() {
Intent intent = new Intent(SWITCH_LOG_FILE_ACTION);
PendingIntent sender = PendingIntent.getBroadcast(this, 0, intent, 0);
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.DAY_OF_MONTH, 1);
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
// 部署任务
AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
if (am != null) {
am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, sender);
}
recordLogServiceLog("deployNextTask success,next task time is:"+myLogSdf.format(calendar.getTime()));
}
/**
* 日志收集
* 1.清除日志缓存
* 2.杀死应用程序已开启的Logcat进程防止多个进程写入一个日志文件
* 3.开启日志收集进程
* 4.处理日志文件，移动 OR 删除
*/
class LogCollectorThread extends Thread {
LogCollectorThread(){
super("LogCollectorThread");
Log.d(TAG, "LogCollectorThread is create");
}
@SuppressLint("WakelockTimeout")
@Override
public void run() {
try {
//唤醒手机
wakeLock.acquire();
//每次记录日志之前先清除日志的缓存, 不然会在两个日志文件中记录重复的日志
clearLogCache();
//运行PS命令得到进程信息
List<String> orgProcessList = getAllProcess();
//根据ps命令得到的内容获取PID，User，name等信息
List<ProcessInfo> processInfoList = getProcessInfoList(orgProcessList);
//关闭由本程序开启的logcat进程
killLogcatPro(processInfoList);
//开始收集日志信息
createLogCollector();
//休眠，创建文件，然后处理文件，不然该文件还没创建，会影响文件删除
Thread.sleep(1000);
//处理日志文件，这里面主要是处理sd卡和内存卡切换存储日志逻辑
handleLog();
//释放
wakeLock.release();
} catch (Exception e) {
e.printStackTrace();
recordLogServiceLog(Log.getStackTraceString(e));
}
}
}
/**
* 每次记录日志之前先清除日志的缓存, 不然会在两个日志文件中记录重复的日志
*/
private void clearLogCache() {
Process pro = null;
List<String> commandList = new ArrayList<>();
commandList.add("logcat");
commandList.add("-c");
try {
pro = Runtime.getRuntime().exec(commandList.toArray(new String[commandList.size()]));
StreamConsumer errorGobbler = new StreamConsumer(pro.getErrorStream());
StreamConsumer outputGobbler = new StreamConsumer(pro.getInputStream());
errorGobbler.start();
outputGobbler.start();
if (pro.waitFor() != 0) {
Log.e(TAG, " clearLogCache proc.waitFor() != 0");
recordLogServiceLog("clearLogCache clearLogCache proc.waitFor() != 0");
}
} catch (Exception e) {
Log.e(TAG, "clearLogCache failed", e);
recordLogServiceLog("clearLogCache failed");
} finally {
try {
if (pro != null) {
pro.destroy();
}
} catch (Exception e) {
Log.e(TAG, "clearLogCache failed", e);
recordLogServiceLog("clearLogCache failed");
}
}
}
/**
* 关闭由本程序开启的logcat进程：
* 根据用户名称杀死进程(如果是本程序进程开启的Logcat收集进程那么两者的USER一致)
* 如果不关闭会有多个进程读取logcat日志缓存信息写入日志文件
* @param allPro allPro
*/
private void killLogcatPro(List<ProcessInfo> allPro) {
if(process != null){
process.destroy();
}
String packName = this.getPackageName();
//获取本程序的用户名称
String myUser = getAppUser(packName, allPro);
for (ProcessInfo processInfo : allPro) {
if (processInfo.name.toLowerCase().equals("logcat") && processInfo.user.equals(myUser)) {
android.os.Process.killProcess(Integer.parseInt(processInfo.pid));
//recordLogServiceLog("kill another logcat process success,the process info is:"
// + processInfo);
}
}
}
/**
* 获取本程序的用户名称
* @param packName packName
* @param allProList allProList
* @return 程序名称
*/
private String getAppUser(String packName, List<ProcessInfo> allProList) {
for (ProcessInfo processInfo : allProList) {
if (processInfo.name.equals(packName)) {
return processInfo.user;
}
}
return null;
}
/**
* 根据ps命令得到的内容获取PID，User，name等信息
* @param orgProcessList orgProcessList
* @return 集合
*/
private List<ProcessInfo> getProcessInfoList(List<String> orgProcessList) {
List<ProcessInfo> proInfoList = new ArrayList<>();
for (int i = 1; i < orgProcessList.size(); i++) {
String processInfo = orgProcessList.get(i);
String[] proStr = processInfo.split(" ");
// USER PID PPID VSIZE RSS WCHAN PC NAME
// root 1 0 416 300 c00d4b28 0000cd5c S /init
List<String> orgInfo = new ArrayList<>();
for (String str : proStr) {
if (!"".equals(str)) {
orgInfo.add(str);
}
}
if (orgInfo.size() == 9) {
ProcessInfo pInfo = new ProcessInfo();
pInfo.user = orgInfo.get(0);
pInfo.pid = orgInfo.get(1);
pInfo.ppid = orgInfo.get(2);
pInfo.name = orgInfo.get(8);
proInfoList.add(pInfo);
}
}
return proInfoList;
}
/**
* 运行PS命令得到进程信息
* @return
* USER PID PPID VSIZE RSS WCHAN PC NAME
* root 1 0 416 300 c00d4b28 0000cd5c S /init
*/
private List<String> getAllProcess() {
List<String> orgProList = new ArrayList<>();
Process pro = null;
try {
pro = Runtime.getRuntime().exec("ps");
StreamConsumer errorConsumer = new StreamConsumer(pro.getErrorStream());
StreamConsumer outputConsumer = new StreamConsumer(pro.getInputStream(), orgProList);
errorConsumer.start();
outputConsumer.start();
if (pro.waitFor() != 0) {
Log.e(TAG, "getAllProcess pro.waitFor() != 0");
recordLogServiceLog("getAllProcess pro.waitFor() != 0");
}
} catch (Exception e) {
Log.e(TAG, "getAllProcess failed", e);
recordLogServiceLog("getAllProcess failed");
} finally {
try {
if (pro != null) {
pro.destroy();
}
} catch (Exception e) {
Log.e(TAG, "getAllProcess failed", e);
recordLogServiceLog("getAllProcess failed");
}
}
return orgProList;
}
/**
* 开始收集日志信息
* 日志包括，f，d，v，time，
*/
public void createLogCollector() {
// 日志文件名称
String logFileName = sdf.format(new Date()) + ".log";
List<String> commandList = new ArrayList<>();
commandList.add("logcat");
commandList.add("-f");
commandList.add("-d");
//commandList.add(LOG_PATH_INSTALL_DIR + File.separator + logFileName);
commandList.add(getLogPath());
commandList.add("-v");
commandList.add("time");
// 过滤所有的i信息
commandList.add("*:I");
// 过滤所有的错误信息
//commandList.add("*:E");
// 过滤指定TAG的信息
// commandList.add("MyAPP:V");
// commandList.add("*:S");
try {
process = Runtime.getRuntime().exec(commandList.toArray(new String[commandList.size()]));
recordLogServiceLog("start collecting the log,and log name is:"+logFileName);
// process.waitFor();
} catch (Exception e) {
Log.e(TAG, "CollectorThread == >" + e.getMessage(), e);
recordLogServiceLog("CollectorThread == >" + e.getMessage());
}
}
/**
* 根据当前的存储位置得到日志的绝对存储路径
* @return 路径
*/
public String getLogPath(){
createLogDir();
// 日志文件名称
String logFileName = sdf.format(new Date()) + ".log";
if(CURR_LOG_TYPE == MEMORY_TYPE){
CURR_INSTALL_LOG_NAME = logFileName;
Log.d(TAG, "Log stored in memory, the path is:"+LOG_PATH_MEMORY_DIR + File.separator + logFileName);
return LOG_PATH_MEMORY_DIR + File.separator + logFileName;
}else{
CURR_INSTALL_LOG_NAME = null;
Log.d(TAG, "Log stored in SDcard, the path is:"+LOG_PATH_SDCARD_DIR + File.separator + logFileName);
return LOG_PATH_SDCARD_DIR + File.separator + logFileName;
}
}
/**
* 处理日志文件
* 1.如果日志文件存储位置切换到内存中，删除除了正在写的日志文件
* 并且部署日志大小监控任务，控制日志大小不超过规定值
* 2.如果日志文件存储位置切换到SDCard中，删除7天之前的日志，移
* 动所有存储在内存中的日志到SDCard中，并将之前部署的日志大小
* 监控取消
*/
public void handleLog(){
//当前的日志记录类型为存储在内存中
if(CURR_LOG_TYPE == MEMORY_TYPE){
//部署日志大小监控任务
deployLogSizeMonitorTask();
//删除内存中的过期日志，删除规则：除了当前的日志和离当前时间最近的日志保存其他的都删除
deleteMemoryExpiredLog();
}else{
//将日志文件转移到SD卡下面
moveLogfile();
//取消部署日志大小监控任务
cancelLogSizeMonitorTask();
//删除内存下过期的日志
deleteSDCardExpiredLog();
}
}
/**
* 部署日志大小监控任务
*/
private void deployLogSizeMonitorTask() {
//如果当前正在监控着，则不需要继续部署
if(logSizeMoniting){
return;
}
logSizeMoniting = true;
Intent intent = new Intent(MONITOR_LOG_SIZE_ACTION);
PendingIntent sender = PendingIntent.getBroadcast(this, 0, intent, 0);
AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
if (am != null) {
am.setRepeating(AlarmManager.RTC_WAKEUP,System.currentTimeMillis(), MEMORY_LOG_FILE_MONITOR_INTERVAL, sender);
}
Log.d(TAG, "deployLogSizeMonitorTask() suc !");
//recordLogServiceLog("deployLogSizeMonitorTask() succ ,start time is " + calendar.getTime().toLocaleString());
}
/**
* 取消部署日志大小监控任务
*/
private void cancelLogSizeMonitorTask() {
logSizeMoniting = false;
AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
Intent intent = new Intent(MONITOR_LOG_SIZE_ACTION);
PendingIntent sender = PendingIntent.getBroadcast(this, 0, intent, 0);
if (am != null) {
am.cancel(sender);
}
Log.d(TAG, "canelLogSizeMonitorTask() suc");
}
/**
* 检查日志文件大小是否超过了规定大小
* 如果超过了重新开启一个日志收集进程
*/
private void checkLogSize(){
//当文件不为空时
if(CURR_INSTALL_LOG_NAME != null && CURR_INSTALL_LOG_NAME.length()>0){
//日志文件在内存中的路径+如果当前的日志写在内存中，记录当前的日志文件名称
String path = LOG_PATH_MEMORY_DIR + File.separator + CURR_INSTALL_LOG_NAME;
File file = new File(path);
if(!file.exists()){
return;
}
Log.d(TAG, "checkLog() ==> The size of the log is too big?");
//当文件长度>=10M时，重新创建一个新的文件夹
if(file.length() >= MEMORY_LOG_FILE_MAX_SIZE){
Log.d(TAG, "The log's size is too big!");
new LogCollectorThread().start();
}
}
}
/**
* 创建日志目录
*/
private void createLogDir() {
//日志文件在内存中的路径的文件夹
File file = new File(LOG_PATH_MEMORY_DIR);
boolean mkOk;
if (!file.isDirectory() && file.exists()) {
mkOk = file.mkdirs();
if (!mkOk) {
//noinspection ResultOfMethodCallIgnored
file.mkdirs();
}
}
//判断SD卡是否存在,并且是否具有读写权限
//创建SD卡路径下的文件夹
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
file = new File(LOG_PATH_SDCARD_DIR);
if (!file.isDirectory()) {
mkOk = file.mkdirs();
if (!mkOk) {
recordLogServiceLog("move file failed,dir is not created succ");
}
}
}
}
/**
* 将日志文件转移到SD卡下面
*/
private void moveLogfile() {
//首先判断sd卡状态
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
//recordLogServiceLog("move file failed, sd card does not mount");
return;
}
File file = new File(LOG_PATH_SDCARD_DIR);
if (!file.isDirectory()) {
boolean mkOk = file.mkdirs();
if (!mkOk) {
//recordLogServiceLog("move file failed,dir is not created succ");
return;
}
}
file = new File(LOG_PATH_MEMORY_DIR);
if (file.isDirectory()) {
File[] allFiles = file.listFiles();
for (File logFile : allFiles) {
String fileName = logFile.getName();
if (logServiceLogName.equals(fileName)) {
continue;
}
//String createDateInfo = getFileNameWithoutExtension(fileName);
File beforeFile = new File(LOG_PATH_SDCARD_DIR + File.separator + fileName);
boolean isSuccess = copy(logFile,beforeFile);
if (isSuccess) {
//noinspection ResultOfMethodCallIgnored
logFile.delete();
//recordLogServiceLog("move file success,log name is:"+fileName);
}
}
}
}
/**
* 删除内存下过期的日志
*/
private void deleteSDCardExpiredLog() {
File file = new File(LOG_PATH_SDCARD_DIR);
if (file.isDirectory()) {
File[] allFiles = file.listFiles();
for (File logFile : allFiles) {
String fileName = logFile.getName();
if (logServiceLogName.equals(fileName)) {
continue;
}
//去除文件的扩展类型
String createDateInfo = getFileNameWithoutExtension(fileName);
//判断sdcard上的日志文件是否可以删除
if (canDeleteSDLog(createDateInfo)) {
//noinspection ResultOfMethodCallIgnored
logFile.delete();
Log.d(TAG, "delete expired log success,the log path is:" + logFile.getAbsolutePath());
}
}
}
}
/**
* 判断sdcard上的日志文件是否可以删除
* @param createDateStr createDateStr
* @return 是否可以删除
*/
public boolean canDeleteSDLog(String createDateStr) {
boolean canDel ;
//获取当前时间
Calendar calendar = Calendar.getInstance();
//删除7天之前日志
calendar.add(Calendar.DAY_OF_MONTH, -1 * SDCARD_LOG_FILE_SAVE_DAYS);
Date expiredDate = calendar.getTime();
try {
Date createDate = sdf.parse(createDateStr);
canDel = createDate.before(expiredDate);
} catch (ParseException e) {
Log.e(TAG, e.getMessage(), e);
canDel = false;
}
return canDel;
}
/**
* 删除内存中的过期日志，删除规则：
* 除了当前的日志和离当前时间最近的日志保存其他的都删除
*/
private void deleteMemoryExpiredLog(){
File file = new File(LOG_PATH_MEMORY_DIR);
if (file.isDirectory()) {
File[] allFiles = file.listFiles();
Arrays.sort(allFiles, new FileComparator());
for (int i=0;i<allFiles.length-2;i++) { //"-2"保存最近的两个日志文件
File _file = allFiles[i];
if (logServiceLogName.equals(_file.getName()) || _file.getName().equals(CURR_INSTALL_LOG_NAME)) {
continue;
}
//noinspection ResultOfMethodCallIgnored
_file.delete();
Log.d(TAG, "delete expired log success,the log path is:"+_file.getAbsolutePath());
}
}
}
/**
* 拷贝文件
* @param source file
* @param target file
* @return 是否拷贝成功
*/
private boolean copy(File source, File target) {
FileInputStream in = null;
FileOutputStream out = null;
try {
if(!target.exists()){
boolean createSuccess = target.createNewFile();
if(!createSuccess){
return false;
}
}
in = new FileInputStream(source);
out = new FileOutputStream(target);
byte[] buffer = new byte[8*1024];
int count;
while ((count = in.read(buffer)) != -1) {
out.write(buffer, 0, count);
}
return true;
} catch (Exception e) {
e.printStackTrace();
Log.e(TAG, e.getMessage(), e);
recordLogServiceLog("copy file fail");
return false;
} finally{
try {
if(in != null){
in.close();
}
if(out != null){
out.close();
}
} catch (IOException e) {
e.printStackTrace();
Log.e(TAG, e.getMessage(), e);
recordLogServiceLog("copy file fail");
}
}
}
/**
* 这个注意是记录错误的日志
* 记录日志服务的基本信息 防止日志服务有错，在LogCat日志中无法查找
* 此日志名称为Log.log
* @param msg msg
*/
private void recordLogServiceLog(String msg) {
if (writer != null) {
try {
Date time = new Date();
writer.write(myLogSdf.format(time) + " : " + msg);
writer.write("\n");
writer.flush();
} catch (IOException e) {
e.printStackTrace();
Log.e(TAG, e.getMessage(), e);
}
}
}
/**
* 去除文件的扩展类型（.log）
* @param fileName fileName
* @return 字符串
*/
private String getFileNameWithoutExtension(String fileName){
return fileName.substring(0, fileName.indexOf("."));
}
class ProcessInfo {
public String user;
private String pid;
private String ppid;
public String name;
@Override
public String toString() {
return "ProcessInfo{" +
"user='" + user + '\'' +
", pid='" + pid + '\'' +
", ppid='" + ppid + '\'' +
", name='" + name + '\'' +
'}';
}
}
class StreamConsumer extends Thread {
InputStream is;
List<String> list;
StreamConsumer(InputStream is) {
this.is = is;
}
StreamConsumer(InputStream is, List<String> list) {
this.is = is;
this.list = list;
}
public void run() {
try {
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line ;
while ((line = br.readLine()) != null) {
if (list != null) {
list.add(line);
}
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
}
/**
* 监控SD卡状态
* @author Administrator
*
*/
private class SDStateMonitorReceiver extends BroadcastReceiver {
public void onReceive(Context context, Intent intent) {
//存储卡被卸载
if(Intent.ACTION_MEDIA_UNMOUNTED.equals(intent.getAction())){
if(CURR_LOG_TYPE == SDCARD_TYPE){
Log.d(TAG, "SDCard is UNMOUNTED");
CURR_LOG_TYPE = MEMORY_TYPE;
new LogCollectorThread().start();
}
}else{
//存储卡被挂载
if(CURR_LOG_TYPE == MEMORY_TYPE){
Log.d(TAG, "SDCard is MOUNTED");
CURR_LOG_TYPE = SDCARD_TYPE;
new LogCollectorThread().start();
}
}
}
}
/**
* 日志任务接收广播
* 切换日志，监控日志大小
* @author Administrator
*
*/
class LogTaskReceiver extends BroadcastReceiver{
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
//切换日志文件action
if(SWITCH_LOG_FILE_ACTION.equals(action)){
new LogCollectorThread().start();
}else if(MONITOR_LOG_SIZE_ACTION.equals(action)){
//日志文件监测action
checkLogSize();
}
}
}
class FileComparator implements Comparator<File> {
public int compare(File file1, File file2) {
if(logServiceLogName.equals(file1.getName())){
return -1;
}else if(logServiceLogName.equals(file2.getName())){
return 1;
}
String createInfo1 = getFileNameWithoutExtension(file1.getName());
String createInfo2 = getFileNameWithoutExtension(file2.getName());
try {
Date create1 = sdf.parse(createInfo1);
Date create2 = sdf.parse(createInfo2);
if(create1.before(create2)){
return -1;
}else{
return 1;
}
} catch (ParseException e) {
return 0;
}
}
}
}