Package org.zeroturnaround.exec

Class WaitForProcess

java.lang.Object

org.zeroturnaround.exec.WaitForProcess

All Implemented Interfaces:

java.util.concurrent.Callable<ProcessResult>

class WaitForProcess
extends java.lang.Object
implements java.util.concurrent.Callable<ProcessResult>

Handles the executed process.

Field Summary

Fields

Modifier and Type	Field	Description
private ProcessAttributes	attributes	Set of main attributes used to start the process.
private ProcessCloser	closer	Helper for closing the process' standard streams.
private ProcessListener	listener	Process event listener (not null).
private static org.slf4j.Logger	log
private MessageLogger	messageLogger	Helper for logging messages about starting and waiting for the processes.
private java.io.ByteArrayOutputStream	out	Buffer where the process output is redirected to or null if it's not used.
private java.lang.Process	process
private ProcessStopper	stopper	Helper for stopping the process in case of interruption.
private java.lang.Thread	workerThread	Thread which executes this operation.

Constructor Summary

Constructors

Constructor	Description
WaitForProcess(java.lang.Process process, ProcessAttributes attributes, ProcessStopper stopper, ProcessCloser closer, java.io.ByteArrayOutputStream out, ProcessListener listener, MessageLogger messageLogger)

Method Summary

Modifier and Type	Method	Description
void	addExceptionMessageSuffix(java.lang.StringBuilder sb)	Adds a suffix for an error message including: executed command working directory (unless it's inherited from parent) environment (unless it's the same with the parent) output read so far (unless it's not read)
ProcessResult	call()
private ProcessOutput	getCurrentOutput()
java.lang.Process	getProcess()
java.lang.StackTraceElement[]	getStackTrace()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

log

private static final org.slf4j.Logger log

process

private final java.lang.Process process

attributes

private final ProcessAttributes attributes

Set of main attributes used to start the process.

stopper

private final ProcessStopper stopper

Helper for stopping the process in case of interruption.

closer

private final ProcessCloser closer

Helper for closing the process' standard streams.

out

private final java.io.ByteArrayOutputStream out

Buffer where the process output is redirected to or null if it's not used.

listener

private final ProcessListener listener

Process event listener (not null).

messageLogger

private final MessageLogger messageLogger

Helper for logging messages about starting and waiting for the processes.

workerThread

private volatile java.lang.Thread workerThread

Thread which executes this operation.

Constructor Detail

WaitForProcess

public WaitForProcess(java.lang.Process process,
                      ProcessAttributes attributes,
                      ProcessStopper stopper,
                      ProcessCloser closer,
                      java.io.ByteArrayOutputStream out,
                      ProcessListener listener,
                      MessageLogger messageLogger)

Method Detail

getProcess

public java.lang.Process getProcess()

Returns:

the sub process.

call

public ProcessResult call()
                   throws java.io.IOException,
                          java.lang.InterruptedException

Specified by:

call in interface java.util.concurrent.Callable<ProcessResult>

Throws:

java.io.IOException

java.lang.InterruptedException

getCurrentOutput

private ProcessOutput getCurrentOutput()

addExceptionMessageSuffix

public void addExceptionMessageSuffix(java.lang.StringBuilder sb)

Adds a suffix for an error message including:

• executed command
• working directory (unless it's inherited from parent)
• environment (unless it's the same with the parent)
• output read so far (unless it's not read)

Parameters:

sb - where the suffix is appended to.

getStackTrace

public java.lang.StackTraceElement[] getStackTrace()

Returns:

current stacktrace of the worker thread, null if this operation is currently not running.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object