alluxio

Class ProcessUtils

java.lang.Object

alluxio.ProcessUtils

public final class ProcessUtils
extends Object

Utility methods for Alluxio Processes.

Method Summary

Modifier and Type	Method and Description
static void	fatalError(org.slf4j.Logger logger, String format, Object... args) Logs a fatal error and then exits the system.
static void	fatalError(org.slf4j.Logger logger, Throwable t, String format, Object... args) Logs a fatal error and then exits the system.
static void	run(Process process) Runs the given Process.
static void	stopProcessOnShutdown(Process process) Adds a shutdown hook that will be invoked when a signal is sent to this process.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

run

public static void run(Process process)

Runs the given Process. This method should only be called from main() methods.

Parameters:

process - the Process to run

fatalError

public static void fatalError(org.slf4j.Logger logger,
                              String format,
                              Object... args)

Logs a fatal error and then exits the system.

Parameters:

logger - the logger to log to

format - the error message format string

args - args for the format string

fatalError

public static void fatalError(org.slf4j.Logger logger,
                              Throwable t,
                              String format,
                              Object... args)

Logs a fatal error and then exits the system.

Parameters:

logger - the logger to log to

t - the throwable causing the fatal error

format - the error message format string

args - args for the format string

stopProcessOnShutdown

public static void stopProcessOnShutdown(Process process)

Adds a shutdown hook that will be invoked when a signal is sent to this process. The process may be utilizing some resources, and this shutdown hook will be invoked by JVM when a SIGTERM is sent to the process by "kill" command. The shutdown hook calls Process.stop() method to cleanly release the resources and exit.

Parameters:

process - the data structure representing the process to terminate