Java Tailer.create方法代码示例

import org.apache.commons.io.input.Tailer; //导入方法依赖的package包/类
/**
 * Starts tailing the given file, thus updating the log lines in the table.
 *
 * @param file
 *         the file to tail
 *
 * @throws FileNotFoundException
 *         if the file was not found
 */
public void startTailingFile(File file) throws FileNotFoundException {
    if (!file.exists()) {
        throw new FileNotFoundException(file.getAbsolutePath());
    }
    closeCurrentFile();
    config.getState().addToRecentFiles(file.getAbsolutePath());
    logTailListener = new BufferedLogTailListener(columnizer.getValue(), columnizedLogs,
            config.getPreferences().getLogBufferSize());
    logTailListener.skipEmptyLogsProperty().bind(config.getPreferences().skipEmptyLogsProperty());
    logTailListener.limitNumberOfLogsProperty().bind(config.getPreferences().limitNumberOfLogsProperty());
    logTailListener.maxNumberOfLogsProperty().bind(config.getPreferences().maxNumberOfLogsProperty());
    tailer = Tailer.create(file, logTailListener, config.getPreferences().getTailingDelayInMillis());
    tailingFile.set(true);
    tailedFileName.set(file.getAbsolutePath());
}
 

import org.apache.commons.io.input.Tailer; //导入方法依赖的package包/类
/**
 * Creates a CsvStreamReader with supplied separator and quote char.
 *
 * @param source The file to an underlying CSV source
 * @param separator The delimiter to use for separating entries
 * @param quoteChar The character to use for quoted elements
 * @param escape The character to use for escaping a separator or quote
 * @param line The line number to skip for start reading
 * @param strictQuotes Sets if characters outside the quotes are ignored
 * @param ignoreLeadingWhiteSpace If true, parser should ignore
 *  white space before a quote in a field
 */
private CsvStreamReader(Source source, char separator, char quoteChar,
    char escape, int line, boolean strictQuotes,
    boolean ignoreLeadingWhiteSpace) {
  super(new StringReader("")); // dummy call to base constructor
  contentQueue = new ArrayDeque<>();
  TailerListener listener = new CsvContentListener(contentQueue);
  tailer = Tailer.create(source.file(), listener, DEFAULT_MONITOR_DELAY,
      false, true, 4096);
  this.parser = new CSVParser(separator, quoteChar, escape, strictQuotes,
      ignoreLeadingWhiteSpace);
  this.skipLines = line;
  try {
    // wait for tailer to capture data
    Thread.sleep(DEFAULT_MONITOR_DELAY);
  } catch (InterruptedException e) {
    throw new RuntimeException(e);
  }
}
 

import org.apache.commons.io.input.Tailer; //导入方法依赖的package包/类
@Test
public void testShouldBeCallListenerHandleByLogging() throws Exception {
    Tailer.create(TestFileLoader.load("data/tailer/test.log"), listener, 100, true);

    ConcurrentTestFileWriter.writeTestData("data/tailer/test.log", "logging", 3);

    Thread.sleep(300);
    verify(mockCollector, times(3)).collect(anyString());
}
 

import org.apache.commons.io.input.Tailer; //导入方法依赖的package包/类
public void open(Map stormConf) {
  fileToParseName = fileToParse.getAbsolutePath();
  parsedLineQueue = new LinkedBlockingQueue<Map>(maxQueueSize);
  currentLine = 0;

  if (lineParser == null)
    lineParser = new NoOpLogLineParser();

  tailer = Tailer.create(fileToParse, this, tailerDelayMs);
  log.info("Started tailing "+fileToParseName);
}
 

import org.apache.commons.io.input.Tailer; //导入方法依赖的package包/类
public void tail(TailerListener listener) {

        File file = new File(
                             fileLocation);
        Tailer tailer = Tailer.create(file, listener, 10);

        tailer.run();
    }
 

import org.apache.commons.io.input.Tailer; //导入方法依赖的package包/类
public void setLogFile(String pathname) {
	logFile = new File(pathname);
	
	tailerListener = new TailerListener();
	tailer = Tailer.create(logFile, tailerListener, 450, false);
	
	Thread thread = new Thread(tailer);
	thread.setDaemon(true);
	thread.start();
	
	if (logFile.exists() == false){
		logger.warn("Coud not open log file: " + pathname);
	}
}
 

import org.apache.commons.io.input.Tailer; //导入方法依赖的package包/类
private void setupTailer() {
	TailerListener listener = new LogTailer();
	File tailFile = new File(DebugLogger.LOGGING_FILENAME);
	tailer = Tailer.create(tailFile, new LogTailer(), 500, true);
}
 

import org.apache.commons.io.input.Tailer; //导入方法依赖的package包/类
public void start() {
    if (tailer == null) {
        tailer = Tailer.create(getLogsFile(), this, 500L, true);
        LOG.info("Logs watcher started. File {} will be tracked for changes.", configurationMediator.getLogFileName());
    }
}
 

import org.apache.commons.io.input.Tailer; //导入方法依赖的package包/类
public static void test(final TestParams testParams) throws IOException, ClassNotFoundException,
    NoSuchMethodException, InvocationTargetException, IllegalAccessException, InterruptedException {

  final File tempFile = File.createTempFile("test", "test");
  final File labelFile = File.createTempFile("result", "result");
  LOG.info("Starting test, output file is {}, test config is \n{}", tempFile.getAbsolutePath(), testParams.toString());  
  Executors.newSingleThreadExecutor().submit(new Callable<Void>() {
    @Override
    public Void call() throws Exception {
      try {          
        Class.forName(testParams.getTaskClassName())
              .getMethod("main", String[].class)
              .invoke(null, (Object) String.format(
                  testParams.getCliStringTemplate(),
                  tempFile.getAbsolutePath(),
                  testParams.getInputInstances(),
                  testParams.getSamplingSize(),
                  testParams.getInputDelayMicroSec(),
                  labelFile.getAbsolutePath(),
                  testParams.getLabelSamplingSize()
                  ).split("[ ]"));
        } catch (Exception e) {
          LOG.error("Cannot execute test {} {}", e.getMessage(), e.getCause().getMessage());
        }
        return null;
      }
    });

  Thread.sleep(TimeUnit.SECONDS.toMillis(testParams.getPrePollWaitSeconds()));

  CountDownLatch signalComplete = new CountDownLatch(1);

  final Tailer tailer = Tailer.create(tempFile, new TestResultsTailerAdapter(signalComplete), 1000);
  new Thread(new Runnable() {
    @Override
    public void run() {
      tailer.run();
    }
  }).start();

  signalComplete.await();
  tailer.stop();

  assertResults(tempFile, testParams);
  if (testParams.getLabelFileCreated())
    assertLabels(labelFile, testParams);
}
 

import org.apache.commons.io.input.Tailer; //导入方法依赖的package包/类
public void start ()  {
	OutputFileListener listener = new OutputFileListener(this);
	tailer = Tailer.create(fileToTail, listener, 500);
}
 

import org.apache.commons.io.input.Tailer; //导入方法依赖的package包/类
public static void test(final TestParams testParams) throws IOException, ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException, InterruptedException {

        final File tempFile = File.createTempFile("test", "test");

        LOG.info("Starting test, output file is {}, test config is \n{}", tempFile.getAbsolutePath(), testParams.toString());

        Executors.newSingleThreadExecutor().submit(new Callable<Void>() {

            @Override
            public Void call() throws Exception {
                try {
                    Class.forName(testParams.getTaskClassName())
                            .getMethod("main", String[].class)
                            .invoke(null, (Object) String.format(
                                    testParams.getCliStringTemplate(),
                                    tempFile.getAbsolutePath(),
                                    testParams.getInputInstances(),
                                    testParams.getSamplingSize(),
                                    testParams.getInputDelayMicroSec()
                                    ).split("[ ]"));
                } catch (Exception e) {
                    LOG.error("Cannot execute test {} {}", e.getMessage(), e.getCause().getMessage());
                }
                return null;
            }
        });

        Thread.sleep(TimeUnit.SECONDS.toMillis(testParams.getPrePollWaitSeconds()));

        CountDownLatch signalComplete = new CountDownLatch(1);

        final Tailer tailer = Tailer.create(tempFile, new TestResultsTailerAdapter(signalComplete), 1000);
        new Thread(new Runnable() {
            @Override
            public void run() {
                tailer.run();
            }
        }).start();

        signalComplete.await();
        tailer.stop();

        assertResults(tempFile, testParams);
    }