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Date: Wed, 18 Mar 2009 03:31:41 +0000
Message-ID: <25aac9fc0903172031k3e51d59ax6bd7df2dc21b7644@mail.gmail.com>
Subject: Re: Using UDV in SOAP Request
From: sebb <sebbaz@gmail.com>
To: JMeter Users List <jmeter-user@jakarta.apache.org>
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On 18/03/2009, Mark Musone <mmusone@gmail.com> wrote:
> Ok, so here's my dilema..hopefully someone can give me some suggestions on a
>  high level what would make the most sense for JMeter to do:
>  I've got literally about 1000 different SOAP/XML requests, each one being
>  different enough to warrent being in their own file. For example, I've got a
>  general SOAP request to "Store a Document", Well the document can be very
>  many different types (PDF, word, plain text..etc..), each type has their own
>  properties So i've got 100 or so different "Store a Document" SOAP/XML
>  files, each one storing a different type.

I find it a bit surprising that there are so many different SOAP requests.
Is there no way to parameterize these and use fewer requests?

In the limit, I suppose one could have a variable for the entire SOAP
body, and just read that  from a CSV file, but that would be very
awkard to maintain.

Can you not find more similarities that would allow one to use small
chunks of text as variables?

>  However, for each document "type", there are properties i need to be
>  variable (I want a random word document name, or  if it's a JPEG image the
>  height and width should be random..etc..)
>
>  My original idea was going to hopefully be simple in such that in each of
>  these 1,000 XML files, i'd just reference a ${variable} whenever I wanted
>  dynamic info..all of these XML files themselves would simply be pointed to
>  by the "Message Folder" attribute, and JMeter'll magically pick any of the
>  1,000 XML files and magically do the variable substitution.
>
>  Now that I understand it's not as cut and dry, with JMeter not processing
>  external files, is there an JMeter-best-practices way to accomplish it?

It's best to reduce the amount of processing that JMeter has to do at
run-time, so if you can create the personalised files outside JMeter,
that would be best.

For example, when I first started using JMeter, I needed to generate
many thousands of randomly orderd unique account ids. That would have
required a lot of memory to keep track of which ones had been used, so
I created many smaller batches of accound ids, and used those in turn
(with the StringFromFile function, which predates CSV Dataset).

>  I believe I can most likely have 1,000 SOAP request samplers (probably
>  inside a random controller) and copy and paste each of these XML files in
>  each sampler and have the variable substitution work...I guess that's the
>  brute force way..I'm just not sure if there's a better option. I probably
>  just need a pointer from the pro's of "Try this function/config"..

If you are prepared to write some Java, then you could create your own
copy of the SOAP/XML-RPC sampler to process the files on the fly.

Or you could perhaps use a BeanShell or BSF Pre-Processor to generate
the contents for the sampler. Or create a BeanShell function that
returns the SOAP body. Again, coding is needed.

>  Thanks,
>
> Mark
>
>
>
>
>  On Tue, Mar 17, 2009 at 11:04 AM, sebb <sebbaz@gmail.com> wrote:
>
>  > On 17/03/2009, Mark Musone <mmusone@gmail.com> wrote:
>  > > Yep, I think you hit the nail on the head..they should rename it to "User
>  > >  Define Constant" or "User Defined Global"!
>  >
>  > This has been made clearer in the documentation.
>  >
>  > Once the Test Plan and all UDVs have been processed, the resulting set
>  > of variables is copied to each thread to provide the initial set of
>  > variables.
>  >
>  > I.e. UDVs create regular JMeter variables, but only at test startup.
>  >
>  > >  ok, so if i understand it correctly,I basically need to put whatever
>  > >  function call I plan on using directly in the XML Data..
>  >
>  > Yes, or pre-create the files and use a variable file name.
>  >
>  > >  Will any of the methods you mention below work on external files, or am
>  > i
>  > >  still screwed with being able to dynamically change anything in an
>  > external
>  > >  file?
>  > >  Thanks,
>  > >
>  > >
>  > >  Mark
>  > >
>  > >
>  > >
>  > >  On Tue, Mar 17, 2009 at 10:50 AM, Ian Blavins <iblavins@temenos.com>
>  > wrote:
>  > >
>  > >  > G'day
>  > >  >
>  > >  > Despite the name User Defined Variables are in fact (global) user
>  > defined
>  > >  > constants. UDVs are evaluated once prior to the run. Each UDV will
>  > take the
>  > >  > final value seen in the test plan and will not change at run time.
>  > >  >
>  > >  > You can use UDVs to initialize local variables but it is the local
>  > >  > variables whose values you have to modify during the run to achieve
>  > what you
>  > >  > have in mind. (To add to the confusion a local variable can take the
>  > same
>  > >  > name as a UDV (which will cause it to be initialized to the (static)
>  > value
>  > >  > of the UDV.) This can make it look like the UDV is varying during the
>  > run
>  > >  > but it is actually the local variable of the same name whose value is
>  > >  > changing.)
>  > >  >
>  > >  > Modifying the value of a local variable can be done in various ways
>  > >  > including with user defined parameters, by using the regular
>  > expression
>  > >  > extractor on the results of a sampler, and others.
>  > >  >
>  > >  > The manual describes all this pretty accurately but the understanding
>  > of
>  > >  > the term 'variable' is so ingrained in IT professionals that many
>  > JMeter
>  > >  > users infer, incorrectly, the operation of UDVs from the name.
>  > >  >
>  > >  >
>  > >  >
>  > >  > Ian Blavins
>  > >  > Software performance specialist
>  > >  > .
>  > >  > TEMENOS
>  > >  > The Banking Software Company
>  > >  > .
>  > >  > PeopleBuilding 2, Maylands Av
>  > >  > Hemel Hempstead   UK   HP2 4NW
>  > >  > .
>  > >  > T:  +44 (0) 1442 431 106
>  > >  > E:  iblavins@temenos.com
>  > >  > .
>  > >  > www.temenos.com
>  > >  > .
>  > >  >
>  > >  >
>  > >  > -----Original Message-----
>  > >  > From: Mark Musone [mailto:mmusone@gmail.com]
>  > >  > Sent: Tuesday, 17 March 2009 2:28 PM
>  > >  > To: jmeter-user@jakarta.apache.org
>  > >  > Subject: Using UDV in SOAP Request
>  > >  >
>  > >  > Hi All,
>  > >  >
>  > >  > I'm trying to use a User Defined Variable (I have it set to a static
>  > value
>  > >  > for now) using the WebService (SOAP) Request.
>  > >  > when I paste the XML in the SOAP/XML-RPC Data box, it works perfectly
>  > >  > fine..the variable gets substituted and sent.
>  > >  >
>  > >  > I however would like to load the XML file using the "File with SOAP
>  > XML
>  > >  > Data" field..essentially just give it the filename.
>  > >  > When I put the same exact XML in a plain text file and specify the
>  > file,
>  > >  > the
>  > >  > variable does NOT get substituted, and instead, the SOAP request gets
>  > sent
>  > >  > along as-is
>  > >  > (i.e. the ${variable} is sent literally)
>  > >  >
>  > >  > The same goes for using the "Message Folder" option, which, long term,
>  > is
>  > >  > really what i'd like to use.
>  > >  >
>  > >  > So is there something i'm missing on how to get UDV's working when
>  > >  > referencing an XML SOAP file?
>  > >  >
>  > >  > Thanks for any help,
>  > >  >
>  > >  > Mark
>  > >  > Disclaimer:
>  > >  > If you have received this e-mail in error please notify the sender.
>  > >  > Please note that any views or opinions presented in this e-mail are
>  > solely
>  > >  > those of the author and do not necessarily represent those of TEMENOS.
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>  > >  > or virus transmitted by this e-mail.
>  > >  >
>  > >  >
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