Package org.apache.storm.utils

Class ShellProcess

java.lang.Object

org.apache.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	Description
String	componentName
static org.slf4j.Logger	LOG
Number	pid
ISerializer	serializer
static org.slf4j.Logger	ShellLogger

Constructor Summary

Constructors

Constructor	Description
ShellProcess(String[] command)

Method Summary

Modifier and Type	Method	Description
void	destroy()
String	getComponentName()
String	getErrorsString()
int	getExitCode()	Get exit code.
Number	getPid()	Get PID.
String	getProcessInfoString()
String	getProcessTerminationInfoString()
Number	launch(Map<String,Object> conf, TopologyContext context)
Number	launch(Map<String,Object> conf, TopologyContext context, boolean changeDirectory)
void	logErrorStream()
ShellMsg	readShellMsg()
void	setEnv(Map<String,String> env)
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 final org.slf4j.Logger LOG

ShellLogger

public static org.slf4j.Logger ShellLogger

serializer

public ISerializer serializer

pid

public Number pid

componentName

public String componentName

Constructor Detail

ShellProcess

public ShellProcess(String[] command)

Method Detail

setEnv

public void setEnv(Map<String,String> env)

launch

public Number launch(Map<String,Object> conf,
                     TopologyContext context)

launch

public Number launch(Map<String,Object> conf,
                     TopologyContext context,
                     boolean changeDirectory)

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()

Get PID.

Returns:

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

getComponentName

public String getComponentName()

getExitCode

public int getExitCode()

Get exit code.

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()