Package io.quarkus.deployment.util

Class ProcessUtil

java.lang.Object

io.quarkus.deployment.util.ProcessUtil

public class ProcessUtil
extends Object

Utility for Process related operations

Constructor Summary

Constructors

Constructor	Description
ProcessUtil()

Method Summary

Modifier and Type	Method	Description
static Process	launchProcess(ProcessBuilder builder, boolean shouldRedirectIO)	Launches and returns a Process built from the builder.
static Process	launchProcessStreamStdOut(ProcessBuilder builder, boolean shouldRedirectIO)	Launches and returns a Process built from the builder.
static void	streamErrorTo(PrintStream printStream, Process process)	Streams the process' STDERR to the given printStream.
static void	streamErrorToSysErr(Process process)	Streams the process' STDERR to the current process' System.err stream.
static void	streamOutputToSysOut(Process process)	Streams the process' STDOUT to the current process' System.out stream.
static void	streamToSysOutSysErr(Process process)	This is a convenience method which internally calls both the streamOutputToSysOut(Process) and streamErrorToSysErr(Process) methods

Methods inherited from class java.lang.Object

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

Constructor Detail

ProcessUtil

public ProcessUtil()

Method Detail

launchProcess

public static Process launchProcess(ProcessBuilder builder,
                                    boolean shouldRedirectIO)
                             throws IOException

Launches and returns a Process built from the builder. Before launching the process, this method checks if inherit IO is disabled and if so, streams both the STDOUT and STDERR of the launched process using streamToSysOutSysErr(Process). Else, it launches the process with ProcessBuilder.inheritIO()

Parameters:

builder - The process builder

shouldRedirectIO - Whether or not ProcessBuilder.Redirect.INHERIT can be used for launching the process

Returns:

Returns the newly launched process

Throws:

IOException

launchProcessStreamStdOut

public static Process launchProcessStreamStdOut(ProcessBuilder builder,
                                                boolean shouldRedirectIO)
                                         throws IOException

Launches and returns a Process built from the builder. Before launching the process, this method checks if inheritIO is disabled and if so, streams (only) the STDOUT of the launched process using streamOutputToSysOut(Process) (Process)}. Else, it launches the process with ProcessBuilder.inheritIO()

Parameters:

builder - The process builder

shouldRedirectIO - Whether or not ProcessBuilder.Redirect.INHERIT can be used for launching the process

Returns:

Returns the newly launched process

Throws:

IOException

streamToSysOutSysErr

public static void streamToSysOutSysErr(Process process)

This is a convenience method which internally calls both the streamOutputToSysOut(Process) and streamErrorToSysErr(Process) methods

Parameters:

process - The process whose STDOUT and STDERR needs to be streamed.

streamOutputToSysOut

public static void streamOutputToSysOut(Process process)

Streams the process' STDOUT to the current process' System.out stream. This creates and starts a thread to stream the contents. The Process is expected to have been started in ProcessBuilder.Redirect.PIPE mode

Parameters:

process - The process whose STDOUT needs to be streamed.

streamErrorToSysErr

public static void streamErrorToSysErr(Process process)

Streams the process' STDERR to the current process' System.err stream. This creates and starts a thread to stream the contents. The Process is expected to have been started in ProcessBuilder.Redirect.PIPE mode

Parameters:

process - The process whose STDERR needs to be streamed.

streamErrorTo

public static void streamErrorTo(PrintStream printStream,
                                 Process process)

Streams the process' STDERR to the given printStream. This creates and starts a thread to stream the contents. The Process is expected to have been started in ProcessBuilder.Redirect.PIPE mode

Parameters:

process - The process whose STDERR needs to be streamed.