org.apache.storm.daemon.supervisor

Class ClientSupervisorUtils

java.lang.Object

org.apache.storm.daemon.supervisor.ClientSupervisorUtils

public class ClientSupervisorUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static com.codahale.metrics.Meter	numWorkerLaunchExceptions

Constructor Summary

Constructors

Constructor and Description
ClientSupervisorUtils()

Method Summary

Modifier and Type	Method and Description
static Process	launchProcess(List<String> command, Map<String,String> environment, String logPrefix, ExitCodeCallback exitCodeCallback, File dir) Launch a new process as per ProcessBuilder with a given callback.
static int	processLauncherAndWait(Map<String,Object> conf, String user, List<String> args, Map<String,String> environment, String logPreFix)
static void	setupStormCodeDir(Map<String,Object> conf, String user, String dir)
static void	setupWorkerArtifactsDir(Map<String,Object> conf, String user, String dir)

Methods inherited from class java.lang.Object

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

Field Detail

numWorkerLaunchExceptions

public static final com.codahale.metrics.Meter numWorkerLaunchExceptions

Constructor Detail

ClientSupervisorUtils

public ClientSupervisorUtils()

Method Detail

processLauncherAndWait

public static int processLauncherAndWait(Map<String,Object> conf,
                                         String user,
                                         List<String> args,
                                         Map<String,String> environment,
                                         String logPreFix)
                                  throws IOException

Throws:

IOException

launchProcess

public static Process launchProcess(List<String> command,
                                    Map<String,String> environment,
                                    String logPrefix,
                                    ExitCodeCallback exitCodeCallback,
                                    File dir)
                             throws IOException

Launch a new process as per ProcessBuilder with a given callback.

Parameters:

command - the command to be executed in the new process

environment - the environment to be applied to the process. Can be null.

logPrefix - a prefix for log entries from the output of the process. Can be null.

exitCodeCallback - code to be called passing the exit code value when the process completes

dir - the working directory of the new process

Returns:

the new process

Throws:

IOException

See Also:

ProcessBuilder

setupStormCodeDir

public static void setupStormCodeDir(Map<String,Object> conf,
                                     String user,
                                     String dir)
                              throws IOException

Throws:

IOException

setupWorkerArtifactsDir

public static void setupWorkerArtifactsDir(Map<String,Object> conf,
                                           String user,
                                           String dir)
                                    throws IOException

Throws:

IOException