I have sampler which generates token, this token need to be passed to APIs as header. I want to execute token generator sampler every 10 minutes as the token will expire after 10 minutes. How can I handle this in JMeter?
The easiest solution would be creating a separate Thread Group with 1 virtual user and 1 HTTP Request sampler which will be refreshing the token.
In order to make it happen each 10 minutes add Flow Control Action sampler and configure it to introduce delay of 600000 milliseconds
To pass the token to other Thread Group(s) you can convert the JMeter Variable into a JMeter Property via __setProperty() function and read it back using __P() function. If you need a token per thread (virtual user) consider using __threadNum() function (in this case the number of threads must be equal to the total number of virtual users)
More information on JMeter Functions concept: Apache JMeter Functions - An Introduction
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I have generated the auth token in setup threadgroup and have passed the auth token to other threadgroups using setProperty and property.But the token expiry time is 30mins. How do I setup the scenario in jmeter so that this can be handled
Convert setUp Thread Group to "normal" Thread Group
Add a Flow Control Action sampler which will introduce delay of, say, 29 minutes and add more loops to the Thread Group
This way each 29 minutes JMeter will request for the new token and update the property holding the token with the new value.
Also be aware of Inter-Thread Communication Plugin, this way you will not only be able to pass objects between different threads but implement custom logic like the other thread will wait until the object is present in the FIFO queue.
I am trying to run http samplers sequentially for multiple requests. Where the output of 1 API response is the input of next API request. My concern is when I run with 5 users (for. e.g), then at given point of time it first executes 1st API with 5 users then second API with 5 users, in this process the API where input is required gets lost. Please help me on this.Actually I have used transaction controller also but here not sequentially api run,so getting file not found exception bcause of first api output response parameter is not passed to second api as a input parameter
I need a solution, where all the samplers are first executed for first user, then for second thread all the samplers are executed and so on.
Each JMeter Thread (virtual user) executes Samplers upside down, if you have 2 samplers each user will always run 1st sampler then it will run 2nd sampler.
You can use __threadNum() function and ${__jm__Thread Group__idx} pre-defined variable in order to verify that the execution order is sequential.
If you want all the users to execute first sampler then all users to execute the second sampler - go for Synchronizing Timer
If you want to get to the reason of the failure try saving the responses using i.e. Simple Data Writer as it might be the case your "first" API fails silently and hence your correlation doesn't extract the value.
I am working on setting up a way to do a performance test for the rest API's using Jmeter which includes token expiry for every three minutes.
1.)Currently, I created two thread groups one for making a call to get "access_token" and setting into the property using Bean shell assertion setProperty, to be used in other thread Groups.
2.)I could see Second thread group can access the value set in the first step.
But my goal is to execute the first thread group every 2min 30 seconds continuously so that the second thread group can get the new token every 2 min 30 seconds.
I tried a constant timer, but didn't seem to work is there any way to do this or any other timer to use to achieve this token refresh?
Thanks in advance
The Constant Timer should work, but be aware that it creates a delay before each Sampler it it's scope so it might be the case your setting it up wrong, you can use i.e. a Dummy Sampler and put the Constant Timer as a child of the Dummy Sampler, this way your HTTP Request to get token will be executed, followed by the delay defined in the Constant Timer, followed by the Dummy Sampler, et.c
Example setup:
You might find Flow Control Action sampler easier to use
Also be aware that starting from JMeter 3.1 you're supposed to be using JSR223 Test Elements and Groovy language for scripting. Moreover it's not required to write any code, you can go either for __setProperty() and __P() functions combination or for Inter-Thread Communication Plugin
There is an LoginAPI which will generate a bearer token and same token is used as part of header in subsequent apis(API-1, API-2, API-3).
LoginAPI is called under SetupThreadGroup, which will write the tokens to file
OtherAPIs(API-1,API-2,API-3 are called in a seperate thread group which will read tokens and use it in API's)
Currently, token expiration time is 30 minutes.
If we execute load test for 1 hour then post 30 minutes test, all the request gets failed with authentication issue(As tokens have expired)
Can any one suggest a solution to handle re-generation of tokens when expired and re-use the same in load test.
This way, i can run test for a longer duration.
Switch from setUp Thread Group for "LoginAPI" to normal Thread Group and configure it to run either desired number of iterations or forever
Add Flow Control Action sampler to the end of the "LoginAPI" thread group and configure it to "sleep" for i.e. 25 minutes
This way first thread group will execute the Login generating or refreshing the token each 25 minutes so "Other" thread group should be safe
If you need to pass the token from LoginAPI to OtherAPIs you can use either __setProperty() and __P() functions combination or Inter-Thread Communication Plugin
I am new to jmeter. Writing script as below:
Thread group1: Token generation
Thread group2: Use token created in Thread group1 and call API.
Need to execute Thread group1 after every 10 mins, so that new token is generated and it is used by Thread group2.
Script structure:
In order to implement a 10 minutes "sleep" Add a Flow Control Action sampler (earlier was Test Action) to 1st Thread Group and configure it to Pause the thread for 600000 milliseconds - 10 minutes
In order to pass token value from one Thread Group into another - use __setProperty() function in 1st thread group to convert JMeter Variable into a JMeter Property and __P() function in 2nd thread group to read the token value.
According to JMeter Best Practices you should always be using the latest JMeter version so consider migrating to JMeter 5.0 (or whatever the latest version available at JMeter Downloads page) as soon as possible.
Below solution worked for me:
In Thread group2 call the API.
Then extract the status code using Regular Expression Extractor.
Add if controller.
NOTE: The only drawback is that, when a request fails then only new token is generated.