I am struggling a bit to make use of a variable created using the Json extractor, I have extracted all the ID's from a response and want to cycle through them individually across the threads.
Thread 1 would use id_1 and thread 2 would use id_2 etc.
I have tried using a ForEach controller but it's cycling through the whole set for each thread.
Test runs like this:
Generate access token
Get parameters - Extract the list of ID's here.
Update parameter - Pass the ID individually here per thread.
Is there a way to achieve this?
You won't be able to do this because as per documentation:
Properties are not the same as variables. Variables are local to a thread; properties are common to all threads, and need to be referenced using the __P or __property function.
So if you want to perform extraction using one thread and then hit everything using multiple threads you can either convert all the variables which start with id_ to JMeter Properties using the following Groovy code snippet:
vars.entrySet().each { variable ->
if (variable.getKey().startsWith('id_')) {
props.put(variable.getKey(), variable.getValue())
}
}
and then you will be able to access the properties using __P() function like:
${__P(id_${__threadNum},)}
Related
How to pass parameter (token) to another thread group , i need to use the parameter pass from another threadgroup as dynamic url ( as the image above , i need to use Survey Token as parameter on the next threadgroup)
i already try some tips , but still get stucked
the token passed from the result GETSurveyToken is not successful place after /svap/survey/[token]
hope anyone can help ??
thanks
i try using : regular expression extractor, json extractor, dan using Preprocessor to get the parameter/variable
As per documentation:
Properties are not the same as variables. Variables are local to a thread; properties are common to all threads, and need to be referenced using the __P or __property function.
What Regular Expression Extractor gives to you is a JMeter Variable so in order to be able to use it in other thread in this or other thread group you need to convert it into a JMeter Property using __setProperty() function. Once done you can access the value using __P() function
If your logic is more complex, i.e. you need to "wait" in 2nd thread group until the token is available consider using Inter-Thread Communication Plugin
I am using the loop controller to loop an array & give HTTP request for each value. But in some cases, variable values are set with current value from the array
It might be the case the array simply doesn't have the variable matching the current loop index, double check the JMeter Variables which are in scope for each loop using Debug Sampler and View Results Tree listener combination.
I cannot reproduce your issue using the following simple setup:
JMeter Variables defined:
The variables referenced using __V() and __intSum() functions combination like:
${__V(var_${__intSum(${__jm__Loop Controller__idx},1,)})}
See Here’s What to Do to Combine Multiple JMeter Variables for the clarification of the syntax used.
If you just need to iterate JMeter Variables it might be easier to go for the ForEach Controller:
I am using BeanShell assertion to passing value to next thread group. Now I wanted to use that value in next thread group. I am using set Property function and I can see in logs those values stored in variable.
Given you set some property value via __setProperty() function like:
${__setProperty(foo,bar,)}
you can read it using __P() function like:
${__P(foo,)}
If you want to fetch the value in a script - you can use props shorthand like:
String myValue = props.get("foo");
Also be aware that starting from JMeter 3.1 you should be using JSR223 Test Elements and Groovy language for scripting so consider migrating to JSR223 Assertion. If you're setting the property value from the script - don't inline JMeter Function, use the aforementioned props shorthand instead like:
props.put("foo", "bar"); // this creates "foo" property with the value of "bar"
You should be able to re-use the same code. Check out The Groovy Templates Cheat Sheet for JMeter article which covers your use case in particular and few more common tasks in general for more details.
I have an http request that uses an extractor to set a JMeter variable (lets call it test) from the body. When I look at the debug controller I can see this works fine. Next I want to append something to the beginning of the variable so I add a user defined variable node and add a variable with the name new and I set the value to ${test}. However when I look in the debug response I see ${test} instead of the value.
I tried the same thing setting the value manually in 2 different UDV nodes and it works fine, so how do I append to a JMeter variable declared in an extractor?
As per JMeter Documentation:
The User Defined Variables element lets you define an initial set of variables, just as in the Test Plan.
Note that all the UDV elements in a test plan - no matter where they are - are processed at the start.
So the User Defined Variables element will be read only once and only when the Test Plan is started.
If you need to overwrite the current variable with a new value you can go for i.e. __groovy() function, the relevant syntax would be something like:
${__groovy(vars.put('foo'\, 'some_prefix_' + vars.get('foo')),)}
Demo:
vars is a shorthand for JMeterVariables class instance, it provides read-write access to all JMeter Variables in the current thread scope. Check out The Groovy Templates Cheat Sheet for JMeter to learn what else you can do with Groovy scripting in JMeter tests
UDVs can't be used in dynamic way because they are process once at the start of the test.
Don't use UDV, use JSR223 Sampler (or PostProcessor) with vars;
vars.put("new", "prefix"+ vars.get("test"))
Another option is to use Set Variables Action plugin
I am trying to use Jmeter for API automation testing.
But Jmeter hasn't provided any separate containers for global and environment variables similarly like SOAP-UI and Postman.
I tried to use property file which also shared among all the JSR223 throughout the project but property having many others keys too and I haven't got any option by which I can delete key which been initiated once. Moreover, I can update the value too which seems most preferable to use
Below code I am using to set and get the values
props.put("shubhamKey", "shubhamValue")
props.get("shubhamKey")
I can also update it using same key
props.put("shubhamKey", "shubhamNewValue")
But as I said we can't delete key once initiated and it seems dangerous to delete from properties as it has many other keys too which may be required by Jmeter internally
After seeing too many things I have seen "User Defined Variables" where I can specify my key-value pairs. I am able to get the value using below code:
vars.get("shubhamLocalVariable")
But I am not able to set the value using below code:
vars.put("shubhamUserKeyagain","shubhamUservalue")
neither I got any option by which I further update it or delete it.
so Is there any feasible thing to store variables in Jmeter which can be easily created/deleted/updated using the code and can even call by other containers like HTTP Request.
Moreover I also want a container which preserve the values so the next iteration and next time (any time like other day) it will start with latest values
User Parameters
Jsr223
Any workaround will be helpful and appreciated in advance
As for me, I'm using a JSR223 Sampler at the begining of every Thread.
And for me it works:
vars.put("checksums_1","")
vars.put("checksums_2","")
vars.put("checksums_3","")
Firstly you can delete properties by using:
props.remove("shubhamKey");
And if you use specific prefix/suffix it shouldn't effect JMeter internally.
User Defined Variables isn't the best way to handle dynamic values, it's used for static variables
Note that all the UDV elements in a test plan - no matter where they are - are processed at the start.
But you can set variable by string or variable or function, e.g:
For defining variables during a test run, see User Parameters which use similar assignments.