Java Slf4jStream类代码示例

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
@Override
public void execute(final String[] arguments, final File directory) {
    LOGGER.info(String.format("Execute maven at '%s': %s", directory, Arrays.toString(arguments)));
    try {
        final List<String> argumentsAsList = Lists.newArrayList(Arrays.asList(arguments));
        argumentsAsList.add(0, getMavenCommand());
        if (LOGGER.isDebugEnabled()) {
            argumentsAsList.add("-e");
        }
        new ProcessExecutor() //
                .command(argumentsAsList) //
                .directory(directory) //
                .redirectOutput(Slf4jStream.of(LOGGER).asDebug()) //
                .redirectError(Slf4jStream.of(LOGGER).asError()) //
                .execute();
    } catch (final Exception exception) {
        throw new MavenExecutionException(exception);
    }
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
/**
 * Sends the destroy signal to this process.
 *
 * @param forceful <code>true</code> if this process should be destroyed forcefully.
 * @return <code>true</code> if this process got the signal, <code>false</code> if the process was not found (any more).
 *
 * @throws IOException on IO error.
 * @throws InterruptedException if interrupted.
 */
public boolean taskkill(boolean forceful) throws IOException, InterruptedException {
  try {
    new ProcessExecutor()
    .commandSplit(String.format("taskkill%s%s /PID %d", includeChildren ? " /T" : "", forceful ? " /F" : "", pid))
    .redirectOutput(Slf4jStream.ofCaller().asDebug()).exitValueNormal().executeNoTimeout();
    return true;
  }
  catch (InvalidExitValueException e) {
    if (e.getExitValue() == EXIT_CODE_COULD_NOT_BE_TERMINATED) {
      // Process could be either alive or not, if it's not alive we don't want to throw an exception
      if (isAlive()) {
        throw e; // process is still alive
      }
      return false; // process is stopped but but not because of us
    }
    if (e.getExitValue() == EXIT_CODE_NO_SUCH_PROCESS) {
      return false;
    }
    throw e;
  }
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
public boolean isAlive() throws IOException, InterruptedException {
  try {
    new ProcessExecutor()
    .commandSplit(String.format("kill -0 %d", pid)).readOutput(true)
    .redirectOutput(Slf4jStream.ofCaller().asTrace())
    .setMessageLogger(MessageLoggers.TRACE)
    .exitValueNormal()
    .executeNoTimeout();
    return true;
  }
  catch (InvalidExitValueException e) {
    if (isNoSuchProcess(e)) {
      return false;
    }
    throw e;
  }
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
private static void loadAgent(final File tempAgentJar, final String pid) throws Exception {
    if (DynamicInstrumentationReflections.isBeforeJava9()) {
        DynamicInstrumentationLoadAgentMain.loadAgent(pid, tempAgentJar.getAbsolutePath());
    } else {
        //-Djdk.attach.allowAttachSelf https://www.bountysource.com/issues/45231289-self-attach-fails-on-jdk9
        //workaround this limitation by attaching from a new process
        final File loadAgentJar = createTempJar(DynamicInstrumentationLoadAgentMain.class, false);
        final String javaExecutable = getJavaHome() + File.separator + "bin" + File.separator + "java";
        final List<String> command = new ArrayList<String>();
        command.add(javaExecutable);
        command.add("-classpath");
        command.add(loadAgentJar.getAbsolutePath()); //tools.jar not needed since java9
        command.add(DynamicInstrumentationLoadAgentMain.class.getName());
        command.add(pid);
        command.add(tempAgentJar.getAbsolutePath());
        new ProcessExecutor().command(command)
                .destroyOnExit()
                .exitValueNormal()
                .redirectOutput(Slf4jStream.of(DynamicInstrumentationLoader.class).asInfo())
                .redirectError(Slf4jStream.of(DynamicInstrumentationLoader.class).asWarn())
                .execute();
    }
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
private void frontendStart() throws IOException {
	ProcessExecutor processExecutor = new ProcessExecutor()
			.directory(new File("frontend"))
			.command("yarn", "start")
			.redirectOutput(Slf4jStream.of(LoggerFactory.getLogger("yarn")).asInfo())
			.redirectError(Slf4jStream.of(LoggerFactory.getLogger("yarn")).asError());

	if (isWindows()) {
		processExecutor = processExecutor.command("cmd", "/c", "yarn", "start");
	}

	processExecutor.start();
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
private void yarnStart(File frontendDir) throws IOException {
  ProcessExecutor process = command("yarn", "start")
    .directory(frontendDir)
    .redirectOutput(Slf4jStream.of(LoggerFactory.getLogger("yarn")).asInfo())
    .redirectError(Slf4jStream.of(LoggerFactory.getLogger("yarn")).asError());

  process.start();
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
private void yarnInstall(File frontendDir) throws InterruptedException, TimeoutException, IOException {
  command("yarn", "install")
    .directory(frontendDir)
    .redirectOutput(Slf4jStream.of(LoggerFactory.getLogger("yarn")).asInfo())
    .redirectError(Slf4jStream.of(LoggerFactory.getLogger("yarn")).asError())
    .exitValueNormal()
    .execute();
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
/**
 * @return a String representing the Erlang version, such as {@code "18.2.1"}
 * @throws ErlangShellException if the Erlang command can't be executed or if it exits unexpectedly.
 */
public String getErlangVersion() throws ErlangShellException {
  String erlangShell = UNIX_ERL_COMMAND;

  Logger processOutputLogger = LoggerFactory.getLogger(
      String.format(LOGGER_TEMPLATE, this.getClass().getName(), erlangShell));

  Slf4jStream stream = Slf4jStream.of(processOutputLogger);

  final ProcessExecutor processExecutor = config.getProcessExecutorFactory().createInstance()
      .command(erlangShell, "-noshell", "-eval", "erlang:display(erlang:system_info(otp_release)), halt().")
      .timeout(config.getErlangCheckTimeoutInMillis(), TimeUnit.MILLISECONDS)
      .redirectError(stream.as(Level.WARN))
      .destroyOnExit()
      .readOutput(true);

  try {
    ProcessResult processResult = processExecutor.execute();
    int exitValue = processResult.getExitValue();
    if (exitValue == 0) {
      return processResult.outputUTF8().trim().replaceAll("[\"\\\\n]", ""); // "18.2.1\n" -> "18.2.1"
    } else {
      throw new ErlangShellException("Erlang exited with status " + exitValue);
    }
  } catch (IOException | InterruptedException | TimeoutException e) {
    throw new ErlangShellException("Exception executing Erlang shell command", e);
  }
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
@Override
public StartedProcess call() throws RabbitMqCommandException {

  List<String> fullCommand = new ArrayList<>(arguments);
  fullCommand.add(0, executableFile.toString());

  Slf4jStream loggingStream = Slf4jStream.of(processOutputLogger);
  LoggingProcessListener loggingListener = new LoggingProcessListener(processOutputLogger);

  ProcessExecutor processExecutor = processExecutorFactory.createInstance()
      .environment(config.getEnvVars())
      .directory(config.getAppFolder())
      .command(fullCommand)
      .destroyOnExit()
      .addListener(loggingListener)               // Logs process events (like start, stop...)
      .addListener(eventsListener)                // Notifies asynchronously of process events (start/finish/stop)
      .redirectError(loggingStream.as(stdErrLogLevel))     // Logging for output made to STDERR
      .redirectOutput(loggingStream.as(stdOutLogLevel))     // Logging for output made to STDOUT
      .redirectOutputAlsoTo(outputStream)         // Pipe stdout to this stream for the application to process
      .redirectErrorAlsoTo(errorOutputStream)     // Pipe stderr to this stream for the application to process
      .readOutput(storeOutput);                   // Store the output in the ProcessResult as well.

  try {
    return processExecutor.start();
  } catch (IOException e) {
    throw new RabbitMqCommandException("Failed to execute: " + StringUtils.join(fullCommand, " "), e);
  }
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
private static void execCommand(final String... command) throws Exception {
    new ProcessExecutor().command(command)
            .destroyOnExit()
            .timeout(1, TimeUnit.MINUTES)
            .exitValueNormal()
            .redirectOutput(Slf4jStream.of(SynchronousChannels.class).asInfo())
            .redirectError(Slf4jStream.of(SynchronousChannels.class).asWarn())
            .stopper(new ProcessStopper() {
                @Override
                public void stop(final Process process) {
                    process.destroy();
                }
            })
            .execute();
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
public boolean isAlive() throws IOException, InterruptedException {
  String out = new ProcessExecutor()
      .commandSplit(String.format("%s process where ProcessId=%d get ProcessId", wmicPath, pid))
      .readOutput(true)
      .redirectOutput(Slf4jStream.ofCaller().asTrace())
      .setMessageLogger(MessageLoggers.TRACE)
      .exitValueNormal()
      .executeNoTimeout().outputString();
  return out.contains(String.valueOf(pid));
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
/**
 * Sends a signal to this process.
 *
 * @param signal name of the signal.
 * @return <code>true</code> if this process received the signal, <code>false</code> if this process was not found (any more).
 *
 * @throws IOException on IO error.
 * @throws InterruptedException if interrupted.
 */
public boolean kill(String signal) throws IOException, InterruptedException {
  try {
    new ProcessExecutor()
    .commandSplit(String.format("kill -%s %d", signal, pid))
    .redirectOutput(Slf4jStream.ofCaller().asDebug()).exitValueNormal().executeNoTimeout();
    return true;
  }
  catch (InvalidExitValueException e) {
    if (isNoSuchProcess(e)) {
      return false;
    }
    throw e;
  }
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
public String executeCommand(String... args) {
    try {
        log.debug("Executing command " + Arrays.asList(args));
        return executor().command(args)
                .timeout(60, TimeUnit.SECONDS)
                .redirectError(Slf4jStream.of(getClass()).asInfo())
                .readOutput(true).execute()
                .outputUTF8();
    } catch (Exception e) {
        log.warn("Exception while calling command " + Arrays.asList(args) + ": " + e);
        throw new ExternalProcessException(e);
    }
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
private int runAssertionCheckScript() throws Exception {
    assertTrue(wordAssertScript.exists());
    return new ProcessExecutor()
            .command(Arrays.asList("cmd", "/C", String.format("\"%s\"", wordAssertScript.getAbsolutePath())))
            .redirectOutput(Slf4jStream.of(LOGGER).asInfo())
            .redirectError(Slf4jStream.of(LOGGER).asInfo())
            .timeout(1L, TimeUnit.MINUTES)
            .exitValueAny()
            .execute()
            .getExitValue();
}
 

import org.zeroturnaround.exec.stream.slf4j.Slf4jStream; //导入依赖的package包/类
public void kill() throws Exception {
    assertTrue(wordShutdownScript.exists());
    new ProcessExecutor()
            .command(Arrays.asList("cmd", "/C", String.format("\"%s\"", wordShutdownScript.getAbsolutePath())))
            .redirectOutput(Slf4jStream.of(LOGGER).asInfo())
            .redirectError(Slf4jStream.of(LOGGER).asInfo())
            .timeout(1L, TimeUnit.MINUTES)
            .exitValueAny()
            .execute()
            .getExitValue();
}