You could use the <log> element to log the command that you are trying to
run via a <process> to see if your command is what you had intended.. The
message will be logged in the STAX Job User Log and displayed in the
Message panel if you are monitoring the STAX job using the STAX Monitor.
For example:
<script>
command = 'pybot.bat -v VMX_PATH:%s -v APP:%s -v VERSION:%s -v BRANCH:%s
-d %s silkTest.html' % \
(vm_vmxPath_map[product_vm_map[product]], product, version, branch,
os.path.join(result_root, product, version))
</script>
<log message="1">
'Starting a process to run command %s on machine %s...' % (command,
machine)
</log>
<process name="'Run Test'">
<location>machine</location>
<command mode="'shell'">command</command>
<workdir>'C:\\AutomatedTesting\\TestScripts\\libs'</workdir>
<stderr mode="'stdout'"/>
<returnstdout/>
</process>
Note that instead of using <parms>, I specified the entire command
including its parameters in the <command> value.
I googled for errror " “WindowsError: [Error 6] The handle is invalid”" and
one of the hits was 'subprocess "handle is invalid" error' at
http://www.megasolutions.net/python/subprocess--handle-is-invalid--error-50439.aspx.
This indicates a problem that can occur if all three input/output streams
are not redirected when using the Python subprocess module. Does your
python script use subprocess?
I'm not familiar with what pybot.bat does. If it uses stdin, then you may
be running into a problem discussed in section "8.12 Process Service" in
the STAF User's Guide at
http://staf.sourceforge.net/current/STAFUG.htm#HDRPROCSTR. This section
contains a note that says:
"Notes
1. On Windows systems, if you are redirecting stdin/out/err and are not
using SAMECONSOLE, it is recommended that you redirect all three
input/output streams. If one or two streams are redirected, but not all
three, the non-redirected streams will not be available to the application.
For example, if stdout and stderr are redirected, but not stdin, then the
application will receive errors if it tries to read from standard input. As
another example, if stdin and stdout are redirected, but not stderr, then
you will not see any of the standard error output displayed in the console
window. This problem only occurs when using NEWCONSOLE, which is the
default. You may freely redirect any combination of stdin, stdout, and
stderr when using SAMECONSOLE. This problem is due to a known limitation in
the Windows API."
So, you could try changing your <process> element to either redirect stdin
or to share the same console as STAFProc. You are redirecting stdout and
stderr but not stdin. To do redirect stdin to an empty file, first create
an empty file on the machine where the process will be run and add a
<stdin> element containing the name of the empty file you created. For
example, if you created an empty file named C:\temp\emptyFile on the test
machine, then your <process> element could be changed to look like the
following:
<process name="'Run Test'">
<location>machine</location>
<command mode="'shell'">command</command>
<workdir>'C:\\AutomatedTesting\\TestScripts\\libs'</workdir>
<stdin>'C:\\temp\\emptyFile'</stdin>
<stderr mode="'stdout'"/>
<returnstdout/>
</process>
Or, instead of creating an empty file and specifying it for <stdin>, you
could specify for the process to use the same console as STAFProc. For
example;
<process name="'Run Test'">
<location>machine</location>
<command mode="'shell'">command</command>
<workdir>'C:\\AutomatedTesting\\TestScripts\\libs'</workdir>
<stderr mode="'stdout'"/>
<console use="'same'"/>
<returnstdout/>
</process>
--------------------------------------------------------------
Sharon Lucas
IBM Austin, luc...@us.ibm.com
(512) 286-7313 or Tieline 363-7313
From: Eileen Wei <e...@fekete.com>
To: "staf-users@lists.sourceforge.net"
<staf-users@lists.sourceforge.net>
Date: 11/08/2010 12:25 PM
Subject: [staf-users] How to find out what's the actual process command
being executed from STAX?
Hi,
I am running stax in my Win7 machine. I have a stax job which contains the
following lines:
<process name="'Run Test'">
<location>machine</location>
<command
mode="'shell'">'pybot.bat'</command>
<parms>
'-v VMX_PATH:%s -v APP:%s -v VERSION:%s -v BRANCH:%s -d %s silkTest.html' %
(vm_vmxPath_map[product_vm_map[product]], product, version, branch,
os.path.join(result_root, product, version))
</parms>
<workdir>'C:\\AutomatedTesting\\TestScripts\\libs'</workdir>
<stderr
mode="'stdout'"/>
<returnstdout/>
</process>
I have clicked “Test” button to make sure “Validation successful” before
submitting the job. And I have manually run the same command (pybot ...)
from a command window and make sure it works.
However, when running from stax, a one point I got “WindowsError: [Error 6]
The handle is invalid” , and I am wondering what might have gone wrong?
Also, I am thinking after the %s string substitution, maybe the actually
command that’s executed is not what I have expected, but I don’t know how
to find out what’s the actual command that’s executed from stax?
Thanks,
Eileen
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