-----Original Message----- From: sebb [mailto:[email protected]] Sent: Friday, June 26, 2009 11:44 AM To: JMeter Users List Subject: Re: ForEach and BeanShell question
On 26/06/2009, Stromas, Aaron (NIH/OD) [C] <[email protected]> wrote: > > > -----Original Message----- > From: sebb [mailto:[email protected]] > > Sent: Friday, June 26, 2009 10:36 AM > To: JMeter Users List > Subject: Re: ForEach and BeanShell question > > On 26/06/2009, Stromas, Aaron (NIH/OD) [C] <[email protected]> wrote: > > > > > > -----Original Message----- > > From: sebb [mailto:[email protected]] > > > > Sent: Friday, June 26, 2009 9:39 AM > > To: JMeter Users List > > Subject: Re: ForEach and BeanShell question > > > > On 26/06/2009, Stromas, Aaron (NIH/OD) [C] <[email protected]> wrote: > > > -----Original Message----- > > > From: sebb [mailto:[email protected]] > > > > > > Sent: Friday, June 26, 2009 8:45 AM > > > To: JMeter Users List > > > Subject: Re: ForEach and BeanShell question > > > > > > On 26/06/2009, Stromas, Aaron (NIH/OD) [C] <[email protected]> > wrote: > > > > > > > > > > > > -----Original Message----- > > > > From: sebb [mailto:[email protected]] > > > > Sent: Thursday, June 25, 2009 2:08 PM > > > > To: JMeter Users List > > > > Subject: Re: ForEach and BeanShell question > > > > > > > > On 25/06/2009, Stromas, Aaron (NIH/OD) [C] <[email protected]> > wrote: > > > > > Greetings! > > > > > > > > > > I have a test plan that uses a RE Extractor to convert the > values of the HTML select element to the input values of the ForEach > controller. These values are of the form X,M,N~Y,A,B~...~Z,C,D, and I can see > from the log that they are properly generated. The reference name for these > values is tuple. The ForEach controller Input variable prefix is tuple, and > the Output variable name is threetuple. > > > > > > > > > > I am emulating Javascript which breaks up the value of selected > option and submits an HTTP request with the values of each of thre-tuple as > parameter. To that end, I have another ForEach controller as a child of the > first one with the BeanShell preprocessor: > > > > > > > > > > String[] tuples = vars.get("threetuple_1").split("~"); > > > > > > > > > > List list = new ArrayList(); > > > > > > > > > > for (int i = 0; i < tuples.length; i++) { > > > > > list.add(tuples[i].split(",")); > > > > > } > > > > > > > > > > vars.put("params", list); > > > > > > > > > > The inner ForEach controller has a HTTP Request sampler with a > BeanShell preprocessor whose job is to break up the three-tuple into > individual parameters. > > > > > > > > > > In short, no HTTP sampler ever executes, and the log shows that > the inner ForEach controller receives null input. > > > > > > > > > > I can see in the log, what I presume to be invocation of the > outer ForEach: > > > > > > > > > > ... jmeter.control.ForEach resultstring > isDone=SAR,713,0~RCC,988,343... > > > > > > > > > > > > > > > and the inner ForEach: > > > > > > > > > > ... jmeter.control.ForeachController: No entries found - null > first entry: params_1 > > > > > > > > > > The questions are: is there any way of knowing why the BeanShell > preprocessor did not execute? > > > > > > > > > > Once that problem resolved, I need to tackle the business of the > ForEach output variable which gets loop index appended to it, so how can the > BeanShell "know" which variable to use? > > > > > > > > > > Any suggestions? > > > > > > > > The ForEach Controller needs multiple variables, not a list: > > > > > > > > > http://jakarta.apache.org/jmeter/usermanual/component_reference.html#ForEach_Controller > > > > > > > > > > > > > > > > It still isn't working for me. This is the schematic of my test: > > > > > > > > ForEach controller > > > > Input var prefix: tuple > > > > > > What sets "tuple_1" etc? > > > > > > > > > These are set by the Regular Expression extractor prior the ForEach > controller (Reference Name: tuple) > > > > > > > > > > Output var name: threetuple > > > > | > > > > | > > > > ForEach controller > > > > Input var prefix: params > > > > > > These need to be set BEFORE the controller is executed. > > > > > > > > > That is what the BeanShell PREprocessor is for, is it not? > > > > Pre-Processors are invoked before samplers in their scope. > > > > > > Which is precisely what I'm trying to achieve. Namely, I need the > preprocessor to run before the inner ForEach controller executes, but it does > not happen. The Debug Sampler does not show any params_* suggesting that the > preprocessor didn't execute. I don't see what I'm doing wrong. :-( > > > > You have put the PreProcessor inside the ForEach Controller, so it > only exectutes if the FE controller runs. > > > > But this is a Cathch-22! How can I put it inside, if it is not executed? > The purpose of that preprocessor is to create x_1, x_2, ... variables that > the inner ForEach consumes. So, this strategy will not work, right? > Don't put it inside; it needs to run *before* the ForEach controller so the variables are set up ready for the FE C. I tried to attach it to an If Controller inside the outer ForEach without success. It has to be a child of something. Still, it didn't work for me. :-( > > > > > > > > > > Output var prefix: reqparams > > > > | > > > > | > > > > BeanShell preprocessor > > > > | String packed = vars.get("threetuple") > > > > | String[] tuples =packed.split("~"); > > > > | for (int i = i; i <= tuples.length; i++) { > > > > > > I presume that is int i = 1; ... > > > > > > Yes, of course, I was free typing, not cut'n pasting > > > > > > > > > > | vars.put("params" + "_" + i, tuples[i-1]); > > > > | > > > > | > > > > > > This is all too late. > > > > > > > HTTP request > > > > | > > > > BeanShell preprocessor > > > > > > Did you mean post-processor? > > > > > > > > > No, the idea is to unpack the string into parameters for the HTTP > request. > > > > OK, then it would be clearer to move it before the sampler, though of > > course that won't affect when it is called. > > > > > > > > > String packed = vars.get("params"); > > > > String[] names = new String[]{"type", "p1", "p2", "p3"}; > > > > for (int i = 0; i < names.length; i++) { > > > > vars.put(names[i], p[i]); > > > > } > > > > > > > > > > > > I have also tried vars.get("threetuple_1") in the first BeanShell. > No matter what I try, in the log I see "jmeter.control.ForeachController: No > entries found - null first entry: params_1". > > > > > > That's because it is null. > > > > > > > Sorry for badgering, but I must be missing something basic. TIA, > > > > > > Use the Debug Sampler to show what variables are set at that point in > > > the test plan. > > > > > > > > > That is golden, thank you. I tried to use it before, but probably at > the wrong place, so it didn't show me much. > > > > Use it liberally. > > > > > > > > > -a > > > > > > > > > > > > > --------------------------------------------------------------------- > > > > To unsubscribe, e-mail: [email protected] > > > > For additional commands, e-mail: [email protected] > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: [email protected] > > > For additional commands, e-mail: [email protected] > > > > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: [email protected] > > > For additional commands, e-mail: [email protected] > > > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [email protected] > > For additional commands, e-mail: [email protected] > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [email protected] > > For additional commands, e-mail: [email protected] > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
