I'm testing a group of urls for performance tests. We have an SLA that states that a certain group of URLS must have an average of 80% success within a certain timerange.
The logic of the sla is done in a separate application. The data is fed from JMeter output into a database.
I need a way to identify the 5 tests of these urls, so that the application knows they belong to the same test. I use a Transaction Controller to group all the URL tests, but I still don't see how I can put an identifier in the generated output file (done by View Results Tree Listener). If I could reuse the timestamp of the parent, i.e. the Transaction Controller for the individual HTTP Requests, that would make my day. I tried adding User Defined Variables under the Transaction Controller, but I don't see how I can output the value of my variable into the output file.
Is anything similar possible?
Best regards,
Wim
Store your value in jmeter context using a Beanshell sampler then in jeter.properties uncomment sample_variables ans add the name under which you stored your value:
Optional list of JMeter variable names whose values are to be saved in the result data files.
Use commas to separate the names. For example:
sample_variables=SESSION_ID,REFERENCE
Regards
Philippe M.
Related
My question is - if I run a test via Jmeter, for example , if it's a site which enables you to book a flight, and you choose your source and destination when you record it.
Is it possible to pass different values to the destination field? I mean, maybe a txt file with some destinations and pass it to the Jmeter test and then, you will have some tests which each of them is running with a different destination?
If yes, how can I do it?
It's not necessary that it will be a txt file. Just a way to pass different values to one parameter.
Important: I'm using blazemeter plugin for chrome.
Thanks a lot,
appreciated.
You can use CSV Data Set Config. It is very easy to use for parameterizing variables in the test plan.
Check this article on blazemeter to understand the CSV Data Set Config quickly.
Depending on what you're trying to achieve you can go for:
HTML Link Parser. See Poll Example which shows how you can use it for selecting random values from inputs
You can extract all the possible values from the previous response using a Post-Processor, most probably CSS Selector Extractor and configure each thread to use its own (or random) value from the input
And last, but not the least, you can use an external data source like .txt or .csv file and utilize __StringFromFile() function or CSV Data Set Config so each thread (virtual user) would read the next value from file instead of using recorded hard-coded values.
Very new to JMeter (and a long time Stack Overflow listener but first time caller so take it easy on me) so any help would be appreciated.
I am trying to set up a JMeter test that uses multiple dynamically generated access tokens to run across scenarios. I currently have a set of data using the CSV Data Set Config containing login credentials of a user's email and password for example:
email1#email.com,password1
email2#email.com,password2
Next I send a HTTP POST request to the Login service which generates an accessToken. Then, I am using the JSON Extractor to grab the generated accessToken. After that I am using the BeanShell Assertion to store the accessToken property/variable.
My issue seems to lie here in this last step since it will only store the last generated variable instead of each of the generated accessTokens. I want to be able to store/overwrite the grabbed accessToken for each email password combination. I would like it to modify/populate the CSV file like this:
email1#email.com,password1,accessToken1
email2#email.com,password2,accessToken2
I have also tried using the Pre Processor > User Parameters
Screen shot of User Parameters
I would like to have the "userBearerToken" variable update/overwrite along with the tests, but I cannot find a way to do so or if this can even currently be done.
I'm finding it difficult to word what I am trying to ask, but basically I want to store multiple dynamically generated variables (accessTokens that change and time out) and use them in other tests. I don't care which component can handle this (either the CSV or User Parameter), but I need to be able to store these variables with their corresponding email password credentials.
If you want to store the accessToken value into a JMeter property for using in other Thread Group(s) be aware that properties are global for the whole JVM and remain until JMeter is restarted so if you define a single accessToken property - each JMeter Thread (or iteration) will overwrite the value.
The solution is to use current thread (or iteration) number as prefix or postfix, this can be done using either __${__threadNum} function or relevant JMeter Variable depending on how iteration is defined or both.
Example setup:
In first thread group: ${__setProperty(access_token_${__threadNum},bar,)}
In second thread group: ${__P(access_token_${__threadNum},)}
Demo:
If you want to save the values into a file writing into the current one is not the best idea as you can (and most probably will) get malformed file due to a form of a race condition. So I would recommend using Sample Variables property instead.
If you add the next line to user.properties file:
sample_variables=email,password,accessToken
JMeter will store the variables named ${email}, ${password}, and ${accessToken} along with their values in the .jtl results file which is basically CSV file which can be re-used anywhere else.
However if you have a requirement to store only the credentials and the token you can go for the Flexible File Writer plugin and configure it to save the aforementioned variables values into a separate file, the relevant configuration would be as simple as:
variable#0,variable#1,variable#2
You can install Flexible File Writer plugin using JMeter Plugins Manager
I am having a search API which will return bunch records(first name, last name, etc). If the DB have the records it will return the attributes with values else it will return as Null. I want to print or write the records for which value is available, Null blocks can be discarded. Could you please guide how to check and capture the same
Depending on where and in what form you want the output the approaches will differ therefore try to be more specific next time, for the time being here is a "generic" solution
Extract data from the response into a JMeter Variables using suitable JMeter Post-Processors. Basically the same process which is used in dynamic data correlation in JMeter tests. Give the variables meaningful names like firstName, lastName, etc.
Define sample_variables property in user.properties file (lives in JMeter "bin" folder) as somma-separated values like:
sample_variables=firstName,lastName,etc.
Next time you run your JMeter test in command-line non-GUI mode the resulting .jtl file will contain the respective values for all defined Sample Variables
I am very new to Jmeter and trying to use it for doing load testing my application.
In my application, every time we click on a template, application will allocate a unique id which to the template...when I recorded the steps using jmeter, a particular unique id was recorded...but when I tried to play the recorded case...it is looking for the same unique id....how do I tell jmeter to get the new id from the application?
Here are the steps
Login as a user,
click on a particular link,
click on a button which will then popup a window asking to select a template,
After selecting a template, my application will create a unique id for that template
It very much depends on whether that template ID is created on the client (i.e. by JavaScript), or on the server (i.e. you can actually record a template ID returned by the server).
If second is your case, then server returns template ID in the response to template selection, so you can use one of the post-processors - a supporting element invoked after the parent request; it usually extracts data from the response and saves it as a variable(s). In your case you'd extract template ID and save it as variable. Later samplers can use the variable in format ${your_name} instead of the recorded hard-coded string. So in that case your plan could look like this:
Which post-processor to use and how to use it depends on the response you are receiving form the server, so cannot be more specific here.
If the first option is your case (JavaScript on the client generates template ID; and your recording only contains usage of said ID), then you can simulate what JavaScript is doing by generating a similar ID using one of the JMeter script-related features: it could be random function, an inline piece of JavaScript code, a scriptable sampler, such as JSR223 Sampler, or... There are many options really, depending on concrete needs of that generated template ID. Again, a more specific question would help to narrow down your choices.
Classic "correlation" example.
Look for that generated ID in the previous responses (you can do it with the View Results Tree listener)
Once you detect it you need to extract it and convert into a JMeter Variable with a PostProcessor (the most commonly used is Regular Expression Extractor, however depending on the nature of your request you may consider to use others
Once you get the ID extracted and stored in the variable - substitute hard-coded value obtained via recording with the JMeter Variable
Repeat steps 1-3 for any other dynamic parameters or values. Or, consider a faster way of creating a JMeter test via alternative recording solution which performs the above steps automatically so you won't have to worry about detecting and handling dynamic elements. See How to Cut Your JMeter Scripting Time by 80% article for details.
You need to check response of the previous request. Normally ID will be created and can be found in the response of previous request and you can use that ID for next request.
You need to first find in which response the ID is being generated and the format of the ID. You can use firebug to see the response in HTML format and find where the id is.
Once you have the format of the id, create regular expression around it. Test it using regex tester that comes with JMeter. Or you can use rubular.com to check the correctness of your regex.
Once you have correct regex, use regular expression postprocessor on the request which returns the id and then use that variable in actual request that uses unique id.
I have to write load tests for web application using JMeter. The application has items available for booking, each item has a 'Book' button. If some user clicks this button for item, it becomes unavailable for other users. My question is:
Is it possible to make JMeter threads to book different items (to make different requests) and how to implement it?
You should be able to determine what parameter is being posted by different "Book" buttons and modify nested requests as needed. Test plan structure should be something like:
Open Booking Page - HTTP Request
Get all Booking IDs - Post Processor
Book - HTTP Request
Where "Post Processor" can be
Regular Expression Extractor
CSS/JQuery Extractor
XPath Extractor
In case of multiple matches Post Processor will return multiple variables like
BookindID_1=some value
BookindID_2=some other value
BookindID_3=some other value 2
....
BookindID_matchNr=10
There are at least 2 options on how to proceed with these values:
Iterate all the values using ForEach Controller
Stick to current virtual thread number via __threadNum function so thread #1 will take BookindID_1 variable, thread #2 - BookingID_2 variable value, etc.
It is also possible to take random value using __Random function but it may result in request failure if item is not available.
The correct way of 2 variables combination looks like:
${__V(VAR1${VAR2})}
So combining BookingID_N and __threadNum will look like
${__V(BookingID_${__threadNum})}
See How to use JMeter Functions post series for more on what can be done via functions.
yes, If every item has static(predefined) unique id,descriptor,identifier then that can be parameterized using a csv config file or random no. generator and selector
Random no generator and selector will work only for integers but csv config is better/standard practice. If you need more help please paste your test plan here with explaination of your need.