org.jvnet.hudson.remcom
Class WindowsRemoteProcessLauncher

java.lang.Object
  org.jvnet.hudson.remcom.WindowsRemoteProcessLauncher

public class WindowsRemoteProcessLauncher
extends Object

Start a Windows process remotely.

This mechanism depends on the RPC and DCOM. We first remotely create a service on the target machine and starts it. This service will accept a named pipe connection, which is used to launch the process and shuttle back and forth stdin and stdout+stderr.

Author:

Kohsuke Kawaguchi

Constructor Summary

WindowsRemoteProcessLauncher(String hostName, org.jinterop.dcom.common.IJIAuthInfo credential)

Method Summary

String	getHostName() Host that this launcher represents.
Process	launch(String command, String workingDirectory) Launches a process remotely.
void	setConnectionTimeout(int milliseconds) Sets the connection timeout in milli-seconds.

Methods inherited from class java.lang.Object

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

Constructor Detail

WindowsRemoteProcessLauncher

public WindowsRemoteProcessLauncher(String hostName,
                                    org.jinterop.dcom.common.IJIAuthInfo credential)

Parameters:

hostName - Remote Windows host name or IP address to connect to.

credential - User account on the target Windows machine. This needs to have sufficient privilege to access administrative shares and install a service. Normally you have to be an administrator to be able to do this.

Method Detail

setConnectionTimeout

public void setConnectionTimeout(int milliseconds)

Sets the connection timeout in milli-seconds. Default is 5000.

getHostName

public String getHostName()

Host that this launcher represents.

launch

public Process launch(String command,
                      String workingDirectory)
               throws IOException,
                      org.jinterop.dcom.common.JIException,
                      InterruptedException

Launches a process remotely.

The resulting Process behaves slightly differently from a normal local Process in the following ways:

• stderr and stdout are bundled together into Process.getOutputStream(). This behavior is like ProcessBuilder.redirectErrorStream(true).
• you need to fully drain the output from the process before you can notice that the process has terminated, because the stdout and exit code travels over the same connection.
• Without calling Process.waitFor(), Process.exitValue() will never return an exit code.

The communication channel to the remote Windows machine is terminated only when you check the exit code or when you destroy the process, so make sure to do so.

Parameters:

command - Command to execute. Note that on Windows the command line argument is a single string, unlike Unix. The implementation executes this through cmd.exe, so one can execute cmd.exe internal commands, such as echo, copy, etc.

workingDirectory - The working directory to launch the process with.

Throws:

IOException

org.jinterop.dcom.common.JIException

InterruptedException