Search code examples
jmeterbeanshell

Call BeanShell function from BeanShell Programs like PreProcessor, PostProcessor, Assertion, etc

Pre-requisite:

Inside JMeter bin folder, I have edited BeanShellFunction.bshrc file to add my function as follows

String getMyString()
{
    return "MyString";
}

I have enabled the BeanShellFunction.bshrc from jmeter.properties file as

beanshell.function.init = BeanShellFunction.bshrc

When I use the following syntax to call function it works fine.

${__BeanShell(getMyString())}

It works fine for below case:
BeanShell Function Call

Question:

How can I call the same function from BeanShell Programs like PreProcessor, PostProcessor, Assertion, etc.?

Analysis:

I tried with following but no luck:

String myStr = getMyString();

BeanShell Assertion

It gives an error as:

Assertion error: true
Assertion failure: false
Assertion failure message: org.apache.jorphan.util.JMeterException: Error invoking bsh method: eval Sourced file: inline evaluation of: `` String myStr = getMyString(); print("MyStr: "+myStr);'' : Typed variable declaration : Command not found: getMyString()

BeanShell Error

Solution

  • From this SO post I found the solution: Calling Jmeter Functions from BeanShell Assertion Script

    Solution
    For each BeanShell Program type there are different beanshell.*.init properties defined in bin/user.properties:

    beanshell.function.init=BeanShellFunction.bshrc
    beanshell.preprocessor.init=BeanShellSampler.bshrc beanshell.postprocessor.init=BeanShellSampler.bshrc beanshell.assertion.init=BeanShellFunction.bshrc

    Hence the same function which needs to be called from any program(preprocessor, postprocessor, etc) we need to copy the function to every .bshrc file OR use same .bshrc file for every program init property.

    Syntax to use:

    You need use the same syntax used for sending URL parameter: 

    String myStr = "${__BeanShell(getMyString())}";

    This automatically calls the beanshell method from defined .bshrc file.

    BeanShell Program

    For Advance Scripting
    If your BeanShell function accepts a parameter: 

    String getMyString(String strParam)
{
    return "MyString: "+strParam;
}

    And you want to pass a property as a parameter to the BeanShell function, you can use following syntax:

    String myStr = "${__BeanShell(getMyString("${__P(param1)}"))}";

    BeanShell Advance

    Believe me it works and it does not give any syntax error.