You got it! :) — Chris Mattmann chris.mattm...@gmail.com
-----Original Message----- From: "Mallder, Valerie" <valerie.mall...@jhuapl.edu> Reply-To: <dev@oodt.apache.org> Date: Tuesday, November 10, 2015 at 12:45 PM To: "dev@oodt.apache.org" <dev@oodt.apache.org> Subject: Resolved RE: how to specify workflow’s ExternScripTaskInstance "Args" metadata > >After an extensive investigation I was never able to figure out how to >define metadata values for ExternScriptTaskInstance in the tasks.xml >file, but I was able to get my ExternScriptTaskInstance to run by putting >some temporary code in my workflow condition class that adds the "Args" >key and a value to the metadata before starting the workflow starts. > >I also figured out that the workflow manager itself doesn't use the >"workflow-instance-met.xml" or "workflow-lifecycle.xml" files that are >found in the deployed workflow/policy directory. Those files are only >used if you are running one of the webapp components. > >Val > > > >Valerie A. Mallder >New Horizons Deputy Mission System Engineer >Johns Hopkins University/Applied Physics Laboratory > > >> -----Original Message----- >> From: Mallder, Valerie [mailto:valerie.mall...@jhuapl.edu] >> Sent: Monday, November 09, 2015 10:56 AM >> To: dev@oodt.apache.org >> Subject: RE: how to specify workflow’s ExternScripTaskInstance "Args" >>metadata >> >> Hi Chris, >> >> Funny, you made the same suggestion last year when I couldn't get the >> ExternScriptTaskInstance to work! Ok, so, I have already built a bunch >>of PGE >> tasks and integrated them into a pipeline, and yes, I do see that they >>are very >> powerful. But, right now I am trying to investigate something that will >>not use a >> PGE task. I'd just like to get the workflow manager to launch an >> ExternScriptTaskInstance. So, I still have the same question. How and >>where do I >> specify the arguments that the ExternScriptTaskInstance seems to >>require? In >> addition to the two examples I showed in my original email, I have also >>tried >> specifying them this way and it causes the >>IterativeWorkflowProcessorThread that >> is the ExternScriptTaskInstance crash with a null pointer on line 79. >> >> The reason the test program that is used to test the >>ExternScriptTaskInstance >> completes successfully is because the metadata value for Args is >>asserted locally >> within the test program and not read in from an xml file like I am >>trying to do. So I >> have been unable to find an example of how to specify the args in the >>xml file :( >> >> Thanks, >> Val >> >> >> <task id="urn:oodt:helloWorldTask" name="helloWorldTask" >> >> class="org.apache.oodt.cas.workflow.examples.ExternScriptTaskInstance"> >> <conditions/> >> >> <configuration> >> <property name="ShellType" value="/bin/sh"/> >> <property name="PathToScript" >> value="[PROJECT_HOME]/bin/hello_world.sh" envReplace="true" /> >> </configuration> >> <requiredMetFields> >> <metfield name="Args" /> >> </requiredMetFields> >> <metadata> >> <keyval> >> <key>Args</key> >> <val>myArguement</val> >> </keyval> >> </metadata> >> </task> >> Valerie A. Mallder >> New Horizons Deputy Mission System Engineer Johns Hopkins >>University/Applied >> Physics Laboratory >> >> >> > -----Original Message----- >> > From: Mattmann, Chris A (3980) [mailto:chris.a.mattm...@jpl.nasa.gov] >> > Sent: Friday, November 06, 2015 2:05 AM >> > To: dev@oodt.apache.org >> > Subject: Re: how to specify workflow’s ExternScripTaskInstance "Args" >> > metadata >> > >> > Val - I would consider not using ExternScriptTaskInstance and instead >> > using the more powerful CAS-PGE. >> > >> > >> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> > +++++ >> > Chris Mattmann, Ph.D. >> > Chief Architect >> > Instrument Software and Science Data Systems Section (398) NASA Jet >> > Propulsion Laboratory Pasadena, CA 91109 USA >> > Office: 168-519, Mailstop: 168-527 >> > Email: chris.a.mattm...@nasa.gov >> > WWW: http://sunset.usc.edu/~mattmann/ >> > >> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> > +++++ >> > Adjunct Associate Professor, Computer Science Department University of >> > Southern California, Los Angeles, CA 90089 USA >> > >> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> > +++++ >> > >> > >> > >> > >> > >> > -----Original Message----- >> > From: "Mallder, Valerie" <valerie.mall...@jhuapl.edu> >> > Reply-To: "dev@oodt.apache.org" <dev@oodt.apache.org> >> > Date: Thursday, November 5, 2015 at 12:13 PM >> > To: "dev@oodt.apache.org" <dev@oodt.apache.org> >> > Subject: how to specify workflow’s ExternScripTaskInstance "Args" >> > metadata >> > >> > >Hi All, >> > > >> > >I am trying to create a workflow task using workflow’s >> > >ExternScripTaskInstance class. There is an example extern script task >> > >in the default workflow “tasks.xml” file, but it doesn’t provide any >> > >key/value pairs for the “Args” metadata so I don’t see how the >> > >example task could actually work. The unit test program does not read >> > >the task information from an .xml file, so it is not very helpful in >> > >figuring this out. But, the ExternScriptTaskInstance class fails on >> > >line 72 where it attempts to access the “args.interator()” object, >>because “args” >> is null. >> > > Neither of the following task definitions will work. Can someone >> > >tell me what keywords I am need to use to define the “Args” value in >> > >the metadata for the task? >> > > >> > >Thanks, >> > >Val >> > > >> > > >> > > <task id="urn:oodt:helloWorldTask" name="helloWorldTask" >> > >>>class="org.apache.oodt.cas.workflow.examples.ExternScriptTaskInstance"> >> > > <configuration> >> > > <property name="ShellType" value="/bin/sh"/> >> > > <property name="PathToScript" >> > >value="[PROJECT_HOME]/bin/hello_world.sh" envReplace="true" /> >> > > </configuration> >> > > <metadata key="Args" value="myArg" /> >> > > </task> >> > > >> > > <task id="urn:oodt:helloWorldTask" name="helloWorldTask" >> > >>>class="org.apache.oodt.cas.workflow.examples.ExternScriptTaskInstance"> >> > > <configuration> >> > > <property name="ShellType" value="/bin/sh"/> >> > > <property name="PathToScript" >> > >value="[PROJECT_HOME]/bin/hello_world.sh" envReplace="true" /> >> > > </configuration> >> > > <customMetadata> >> > > <metadata key="Args" value="myArg" /> >> > > </customMetadata> >> > > </task> >> > > >> > > >> > > >> > > >> > >Valerie A. Mallder >> > > >> > >New Horizons Deputy Mission System Engineer The Johns Hopkins >> > >University/Applied Physics Laboratory >> > >11100 Johns Hopkins Rd (MS 23-282), Laurel, MD 20723 >> > >240-228-7846 (Office) 410-504-2233 (Blackberry) >> > > >
