backtype.storm.utils

Class ShellProcess

java.lang.Object

backtype.storm.utils.ShellProcess

All Implemented Interfaces:

Serializable

public class ShellProcess
extends Object
implements Serializable

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
String	componentName
static org.apache.log4j.Logger	LOG
Number	pid
ISerializer	serializer
static org.apache.log4j.Logger	ShellLogger

Constructor Summary

Constructors

Constructor and Description
ShellProcess(String[] command)

Method Summary

Methods

Modifier and Type	Method and Description
void	destroy()
String	getComponentName()
String	getErrorsString()
int	getExitCode()
Number	getPid()
String	getProcessInfoString()
String	getProcessTerminationInfoString()
Number	launch(Map conf, TopologyContext context)
void	logErrorStream()
ShellMsg	readShellMsg()
void	writeBoltMsg(BoltMsg msg)
void	writeSpoutMsg(SpoutMsg msg)
void	writeTaskIds(List<Integer> taskIds)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static org.apache.log4j.Logger LOG

ShellLogger

public static org.apache.log4j.Logger ShellLogger

serializer

public ISerializer serializer

pid

public Number pid

componentName

public String componentName

Constructor Detail

ShellProcess

public ShellProcess(String[] command)

Method Detail

launch

public Number launch(Map conf,
            TopologyContext context)

destroy

public void destroy()

readShellMsg

public ShellMsg readShellMsg()
                      throws IOException

Throws:

IOException

writeBoltMsg

public void writeBoltMsg(BoltMsg msg)
                  throws IOException

Throws:

IOException

writeSpoutMsg

public void writeSpoutMsg(SpoutMsg msg)
                   throws IOException

Throws:

IOException

writeTaskIds

public void writeTaskIds(List<Integer> taskIds)
                  throws IOException

Throws:

IOException

logErrorStream

public void logErrorStream()

getErrorsString

public String getErrorsString()

getPid

public Number getPid()

Returns:

pid, if the process has been launched, null otherwise.

getComponentName

public String getComponentName()

Returns:

the name of component.

getExitCode

public int getExitCode()

Returns:

exit code of the process if process is terminated, -1 if process is not started or terminated.

getProcessInfoString

public String getProcessInfoString()

getProcessTerminationInfoString

public String getProcessTerminationInfoString()