I have a regular expression which contains multiple matches (17 to be precise). All of these are to be captured and written to a file.
Match No. -1 is used to capture all the matches
Now, am using a ForEach Controller to iterate over these matches. Unfortunately, this doesn't work.
Please help. The screenshots are attached for your reference.
Regards,
Ajith
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There is a red 1 near to yellow exclamation sign in top-right corner of JMeter GUI which means that your test has failed somewhere somehow
so inspect jmeter.log file and see what went wrong.
JMeter Post-Processors are only executed in Sampler context, if you put a Post-Processor under the ForEach Controller and there will be no Samplers under that controller - the Post-Processor won't be executed. So I would suggest switching to JSR223 Sampler instead.
Writing data into a file using Groovy script might be not the best idea because if you run your test with >1 threads (users) you will face a race condition resulting in data corruption or loss so it might be a better option to consider using Sample Variables and Flexible File Writer
Related
How to log regular expression extractor value in results when ran through blaze-meter
If you're a BlazeMeter customer it could make more sense to contact BlazeMeter Support, most probably you will get more quick and professional response than trying to ask random people over the Internet for their opinions.
Whatever. What do you mean by "log"?
If you need to write the value to jmeter.log file - just add __logn() function somewhere in your script like:
${__logn(My variable value is: ${foo},,)}
replace ${foo} with your actual variable name
Once test finishes you will see the variable value in the jmeter.log file (you can download it as a part of artifacts.zip bundle from your test Execution Logs
If you want to track the variable value per each sampler - the easiest option is to configure Sample Variables property and provide your variable value there:
this way you will see an extra column in the kpi.jtl file containing your variable value
Artifacts view containing kpi.jtl and jmeter.log files
At the moment, my JMeter test uses a CSV Data Set Config to iterate through a limited set of input data for each HTTP request that I do.
But I don't want to deal with the hassle of an external file (uploading it to my test runner, etc.) - I'd like to just embed the data into the jmx file itself.
I was hoping for something like a "test data" node, that would work similarly to a CSV data set (with Recycle on EOF especially) and I'd just copy/paste the data into the test plan instead of working with an external file.
I'm thinking I might be able to work around it with a JSR223 preprocessor - but is there a better built-in way?
Edit: As per comment: the data cannot be generated.
If you want to do this via JSR223 Test Elements and Groovy language correct syntax would be
vars.put("messageId", "wibble");
vars is a shorthand for JMeterVariables class instance, see the JavaDoc for available functions and properties.
Easier way would be going for User Defined Variables or User Parameters or even better Set Variables Action
You can create a text contains keys and values separated with tab, copy all text
Notice if you have property file you can replace = with tab
Add to JMeter GUI User Defined Variables and click Add from Clipboard
It'll load all your variables to JMeter without "do that by hand using JMeter's GUI"
.
This is my first go at a script based approach using a JSR223 preprocessor node:
// This is where the data is embedded. Up to a couple of hundred entries
// is probably fine, more than that will likely be a bad idea.
def messageIdList = ["graffle", "wibble", "wobble", "flobble", "gibble", ...]
def messageIndex = (vars.getIteration() -1) % (messageIdList.size() -1)
println "iteration ${vars.iteration}, size ${messageIdList.size()}, index: ${messageIndex}"
vars.put("messageId", messageIdList[messageIndex]);
messageIndex++
This appears to do what I want, even when run in a Thread Group with multiple threads.
I'm not sure exactly what the vars.getIteration() represents, and I'm not clear about the precise lifetime / scope of the variables. But it'll do for now.
Any better answers will cheerfully accepted, marked and upvoted.
Looking to utilize jmeter for some automated testing but facing a problem. preliminary to my tests I want to run a query on my DB and then store the result in a text file.
I thought I'd do it via a JDBC request as such:
Then immediately after I want to do some post-processing that writes the result to our file:
I've tried, too, putting the paramater passed to vars.get in quotation marks, but I get no such luck. Jmeter does write a file, but that file is empty, and if I run the query independently, it does return results.
Does anybody know how to get this desired behavior?
If you look into jmeter.log file you should see a Beanshell Related error.
This is due to "Result Variable Name" being an ArrayList, not String, hence
You need to use vars.getObject() method instead of vars.get();
Ensure you quote the variable name
Remove the ";" at end of SQL Query
You need to iterate the ArrayList somehow or serialize it to file.
If result set is large it's better to consider doing it via JSR223 Sampler using "groovy" as a language as Beanshell has some performance limitations. See Beanshell vs JSR223 vs Java JMeter Scripting: The Performance-Off You've Been Waiting For! guide for benchmarking results and instructions on how to setup groovy scripting engine support.
To write the output to a file , see :
Append data into a file using Apache Commons I/O
If you decide to use Groovy it will be even easier :
http://grails.asia/groovy-file-examples
I'm looking into the possibilities of jmeter, and it looks just great. However, one of the things my testing script should be able to do, is search for some values, and click on a random resulting link.
So what I would need to automate is:
Entering the values in the searchbox (I could do this by using the correct GET url in a second page, but how do I do this 5000 times?)
Clicking on one of the results listed.
Thanks for the help!
This can be done using the CSV Data Set, it loads a CSV file, and feeds the content into the variables of your choice:
http://jmeter.apache.org/usermanual/component_reference.html#CSV_Data_Set_Config
After that, you can use the regular expression extractor to extract the URL's you want from the resulting HTML, and follow those links:
http://jmeter.apache.org/usermanual/component_reference.html#Regular_Expression_Extractor
You could use a HTML Link Parser for your second part (the clicking on one of the results):
http://jmeter.apache.org/usermanual/component_reference.html#HTML_Link_Parser
See http://theworkaholic.blogspot.co.at/2009/11/randomly-clicking-links-in-jmeter.html for an example of using the link parser in a context similar to your question.
I am using JMeter for a real estate application when I am selecting a plot it is generating a dynamic value like this 1305003402565. It is incrementing like this 1305003280751 per request to request I need to capture this value and I am not able to find it in the source code.
You may be able to force your application to show the dynamic value in the source code by requesting the page as a GET (instead of POST). Then, using Tree View, copy the source into your favorite regular expression extractor to write your regex to extract the value.