How to check if build parameter is available in Jenkinsfile

Question

I have a pipeline script that should work with and without parameters. So I have to check if the parameter is available.

I tried if(getBinding().hasVariable(\"mypa

Answer 1

See Getting Started with Pipeline, Build Parameters:

Build Parameters

If you configured your pipeline to accept parameters using the Build with Parameters option, those parameters are accessible as Groovy variables of the same name.

UPDATE

• ☑This build is parameterized → Add parameter → String Parameter:

  • Name: STRING_PARAMETER
  • Default Value: STRING_PARAMETER_VALUE

• Pipeline → Definition: Pipeline script → Script:

def stringParameterExists = true
def otherParameterExists = true

try {
  println "  STRING_PARAMETER=$STRING_PARAMETER"
  }
catch (MissingPropertyException e) {
  stringParameterExists = false
  }  

try {
  println "  NOT_EXISTING_PARAMETER=$NOT_EXISTING_PARAMETER"
  }
catch (MissingPropertyException e) {
  otherParameterExists = false
  }

println "  stringParameterExists=$stringParameterExists"
println "  otherParameterExists=$otherParameterExists"

Console Output:

[Pipeline] echo
  STRING_PARAMETER=STRING_PARAMETER_VALUE
[Pipeline] echo
  stringParameterExists=true
[Pipeline] echo
  otherParameterExists=false
[Pipeline] End of Pipeline
Finished: SUCCESS