Java ExitCodeException类代码示例

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
/**
 * Create a ShellCommandExecutor object which returns exit code 1,
 * emulating the case that the user does not exist.
 *
 * @param userName not used
 * @return a mock ShellCommandExecutor object
 */
@Override
protected ShellCommandExecutor createGroupExecutor(String userName) {
  ShellCommandExecutor executor = mock(ShellCommandExecutor.class);

  try {
    doThrow(new ExitCodeException(1,
        "id: foobarusernotexist: No such user")).
        when(executor).execute();

    when(executor.getOutput()).thenReturn("");
  } catch (IOException e) {
    LOG.warn(e.getMessage());
  }
  return executor;
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
public void run() {
  try {
    Vector<String> args = new Vector<String>();
    if (isSetsidAvailable()) {
      args.add("setsid");
    }
    args.add("bash");
    args.add("-c");
    args.add(" echo $$ > " + pidFile + "; sh " + shellScript + " " + N
        + ";");
    shexec = new ShellCommandExecutor(args.toArray(new String[0]));
    shexec.execute();
  } catch (ExitCodeException ee) {
    LOG.info("Shell Command exit with a non-zero exit code. This is"
        + " expected as we are killing the subprocesses of the"
        + " task intentionally. " + ee);
  } catch (IOException ioe) {
    LOG.info("Error executing shell command " + ioe);
  } finally {
    LOG.info("Exit code: " + shexec.getExitCode());
  }
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
@Override 
public void init() throws IOException {        
  // Send command to executor which will just start up, 
  // verify configuration/permissions and exit
  List<String> command = new ArrayList<String>(
      Arrays.asList(containerExecutorExe,
          "--checksetup"));
  String[] commandArray = command.toArray(new String[command.size()]);
  ShellCommandExecutor shExec = new ShellCommandExecutor(commandArray);
  if (LOG.isDebugEnabled()) {
    LOG.debug("checkLinuxExecutorSetup: " + Arrays.toString(commandArray));
  }
  try {
    shExec.execute();
  } catch (ExitCodeException e) {
    int exitCode = shExec.getExitCode();
    LOG.warn("Exit code from container executor initialization is : "
        + exitCode, e);
    logOutput(shExec.getOutput());
    throw new IOException("Linux container executor not configured properly"
        + " (error=" + exitCode + ")", e);
  }
 
  resourcesHandler.init(this);
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
/**
 * Creates a hardlink 
 * @param file - existing source file
 * @param linkName - desired target link file
 */
public static void createHardLink(File file, File linkName) 
throws IOException {
  if (file == null) {
    throw new IOException(
        "invalid arguments to createHardLink: source file is null");
  }
  if (linkName == null) {
    throw new IOException(
        "invalid arguments to createHardLink: link name is null");
  }
 // construct and execute shell command
  String[] hardLinkCommand = getHardLinkCommand.linkOne(file, linkName);
  ShellCommandExecutor shexec = new ShellCommandExecutor(hardLinkCommand);
  try {
    shexec.execute();
  } catch (ExitCodeException e) {
    throw new IOException("Failed to execute command " +
        Arrays.toString(hardLinkCommand) +
        "; command output: \"" + shexec.getOutput() + "\"" +
        "; WrappedException: \"" + e.getMessage() + "\"");
  }
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
@Override
public void setup(LocalDirAllocator allocator, LocalStorage localStorage)
    throws IOException {

  // Check the permissions of the task-controller binary by running
  // it plainly.  If permissions are correct, it returns an error
  // code 1, else it returns 24 or something else if some other bugs
  // are also present.
  String[] taskControllerCmd =
      new String[] { taskControllerExe };
  ShellCommandExecutor shExec = new ShellCommandExecutor(taskControllerCmd);
  try {
    shExec.execute();
  } catch (ExitCodeException e) {
    int exitCode = shExec.getExitCode();
    if (exitCode != 1) {
      LOG.warn("Exit code from checking binary permissions is : " + exitCode);
      logOutput(shExec.getOutput());
      throw new IOException("Task controller setup failed because of invalid"
        + "permissions/ownership with exit code " + exitCode, e);
    }
  }
  this.allocator = allocator;
  this.localStorage = localStorage;
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
@Override
public void signalTask(String user, int taskPid, 
                       Signal signal) throws IOException {
  String[] command = 
    new String[]{taskControllerExe, 
                 user,
                 localStorage.getDirsString(),
                 Integer.toString(Commands.SIGNAL_TASK.getValue()),
                 Integer.toString(taskPid),
                 Integer.toString(signal.getValue())};
  ShellCommandExecutor shExec = new ShellCommandExecutor(command);
  if (LOG.isDebugEnabled()) {
    LOG.debug("signalTask: " + Arrays.toString(command));
  }
  try {
    shExec.execute();
  } catch (ExitCodeException e) {
    int ret_code = shExec.getExitCode();
    if (ret_code != ResultCode.INVALID_TASK_PID.getValue()) {
      logOutput(shExec.getOutput());
      throw new IOException("Problem signalling task " + taskPid + " with " +
                            signal + "; exit = " + ret_code);
    }
  }
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
public void run() {
  try {
    Vector<String> args = new Vector<String>();
    if(ProcessTree.isSetsidAvailable) {
      args.add("setsid");
    }
    args.add("bash");
    args.add("-c");
    args.add(" echo $$ > " + pidFile + "; sh " +
        shellScript + " " + N + ";") ;
    shexec = new ShellCommandExecutor(args.toArray(new String[0]));
    shexec.execute();
  } catch (ExitCodeException ee) {
    LOG.info("Shell Command exit with a non-zero exit code. This is" +
        " expected as we are killing the subprocesses of the" +
        " task intentionally. " + ee);
  } catch (IOException ioe) {
    LOG.info("Error executing shell command " + ioe);
  } finally {
    LOG.info("Exit code: " + shexec.getExitCode());
  }
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
public void run() {
  try {
    Vector<String> args = new Vector<String>();
    if(ProcessTree.isSetsidAvailable) {
      args.add("setsid");
    }
    args.add("bash");
    args.add("-c");
    args.add(" echo $$ > " + pidFile + "; sh " +
                      shellScript + " " + N + ";") ;
    shexec = new ShellCommandExecutor(args.toArray(new String[0]));
    shexec.execute();
  } catch (ExitCodeException ee) {
    LOG.info("Shell Command exit with a non-zero exit code. This is" +
             " expected as we are killing the subprocesses of the" +
             " task intentionally. " + ee);
  } catch (IOException ioe) {
    LOG.info("Error executing shell command " + ioe);
  } finally {
    LOG.info("Exit code: " + shexec.getExitCode());
  }
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
public void run() {
  try {
    Vector<String> args = new Vector<String>();
    if(isSetsidAvailable()) {
      args.add("setsid");
    }
    args.add("bash");
    args.add("-c");
    args.add(" echo $$ > " + pidFile + "; sh " +
                      shellScript + " " + N + ";") ;
    shexec = new ShellCommandExecutor(args.toArray(new String[0]));
    shexec.execute();
  } catch (ExitCodeException ee) {
    LOG.info("Shell Command exit with a non-zero exit code. This is" +
             " expected as we are killing the subprocesses of the" +
             " task intentionally. " + ee);
  } catch (IOException ioe) {
    LOG.info("Error executing shell command " + ioe);
  } finally {
    LOG.info("Exit code: " + shexec.getExitCode());
  }
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
/** 
 * Get the current user's group list from Unix by running the command 'groups'
 * NOTE. For non-existing user it will return EMPTY list
 * @param user user name
 * @return the groups list that the <code>user</code> belongs to
 * @throws IOException if encounter any error when running the command
 */
private static List<String> getUnixGroups(final String user) throws IOException {
  String result = "";
  try {
    result = Shell.execCommand(Shell.getGroupsForUserCommand(user));
  } catch (ExitCodeException e) {
    // if we didn't get the group - just return empty list;
    LOG.warn("got exception trying to get groups for user " + user, e);
  }
  
  StringTokenizer tokenizer =
      new StringTokenizer(result, Shell.TOKEN_SEPARATOR_REGEX);
  List<String> groups = new LinkedList<String>();
  while (tokenizer.hasMoreTokens()) {
    groups.add(tokenizer.nextToken());
  }
  return groups;
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
/**
 * Is the process with PID pid still alive?
 * This method assumes that isAlive is called on a pid that was alive not
 * too long ago, and hence assumes no chance of pid-wrapping-around.
 * 
 * @param pid pid of the process to check.
 * @return true if process is alive.
 */
public static boolean isAlive(String pid) {
  ShellCommandExecutor shexec = null;
  try {
    String[] args = { "kill", "-0", pid };
    shexec = new ShellCommandExecutor(args);
    shexec.execute();
  } catch (ExitCodeException ee) {
    return false;
  } catch (IOException ioe) {
    LOG.warn("Error executing shell command "
        + Arrays.toString(shexec.getExecString()) + ioe);
    return false;
  }
  return (shexec.getExitCode() == 0 ? true : false);
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
/**
 * Is the process group with  still alive?
 * 
 * This method assumes that isAlive is called on a pid that was alive not
 * too long ago, and hence assumes no chance of pid-wrapping-around.
 * 
 * @param pgrpId process group id
 * @return true if any of process in group is alive.
 */
public static boolean isProcessGroupAlive(String pgrpId) {
  ShellCommandExecutor shexec = null;
  try {
    String[] args = { "kill", "-0", "-"+pgrpId };
    shexec = new ShellCommandExecutor(args);
    shexec.execute();
  } catch (ExitCodeException ee) {
    return false;
  } catch (IOException ioe) {
    LOG.warn("Error executing shell command "
        + Arrays.toString(shexec.getExecString()) + ioe);
    return false;
  }
  return (shexec.getExitCode() == 0 ? true : false);
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
@Override
public void setup(LocalDirAllocator allocator, LocalStorage localStorage)
    throws IOException {

  // Check the permissions of the task-controller binary by running it plainly.
  // If permissions are correct, it returns an error code 1, else it returns
  // 24 or something else if some other bugs are also present.
  String[] taskControllerCmd =
      new String[] { taskControllerExe };
  ShellCommandExecutor shExec = new ShellCommandExecutor(taskControllerCmd);
  try {
    shExec.execute();
  } catch (ExitCodeException e) {
    int exitCode = shExec.getExitCode();
    if (exitCode != 1) {
      LOG.warn("Exit code from checking binary permissions is : " + exitCode);
      logOutput(shExec.getOutput());
      throw new IOException("Task controller setup failed because of invalid"
        + "permissions/ownership with exit code " + exitCode, e);
    }
  }
  this.allocator = allocator;
  this.localStorage = localStorage;
}
 

import org.apache.hadoop.util.Shell.ExitCodeException; //导入依赖的package包/类
/** 
 * Get the current user's group list from Unix by running the command 'groups'
 * NOTE. For non-existing user it will return EMPTY list
 * @param user user name
 * @return the groups list that the <code>user</code> belongs to
 * @throws IOException if encounter any error when running the command
 */
private static List<String> getUnixGroups(final String user) throws IOException {
  String result = "";
  try {
    result = Shell.execCommand(Shell.getGroupsForUserCommand(user));
  } catch (ExitCodeException e) {
    // if we didn't get the group - just return empty list;
    LOG.warn("got exception trying to get groups for user " + user, e);
  }
  
  StringTokenizer tokenizer = new StringTokenizer(result);
  List<String> groups = new LinkedList<String>();
  while (tokenizer.hasMoreTokens()) {
    groups.add(tokenizer.nextToken());
  }
  return groups;
}