Jenkins pipeline input script with one prompt only - jenkins

Question

Don't need 2 prompt in Jenkins pipeline with input script. In snippet, there is highlighted 1 and 2 where pipeline prompt 2 times for user input.
If execute this pipeline, prompt 1 will provide user to "Input requested" only, so no option to "Abort". Prompt 2 is okay as it ask to input the value and also "Abort" option.
Prompt 1 is almost useless, can we skip promt this and directly reach to prompt 2?
pipeline {
agent any
parameters {
string(defaultValue: '', description: 'Enter the Numerator', name: 'Num')
string(defaultValue: '', description: 'Enter the Denominator', name: 'Den')
}
stages {
stage("foo") {
steps {
script {
if ( "$Den".toInteger() == 0) {
echo "Denominator can't be '0', please re-enter it."
env.Den = input message: 'User input required', ok: 'Re-enter', // 1-> It will ask whether to input or not
parameters: [string(defaultValue: "", description: 'Enter the Denominator', name: 'Den')] // 2-> It will ask to input the value
}
}
sh'''#!/bin/bash +x
echo "Numerator: $Num\nDenominator: $Den"
echo "Output: $((Num/Den))"
'''
}
}
}
}

Answer 1

Yes, you can simplify the input by using $class: 'TextParameterDefinition'.
e.g.
pipeline {
agent any
parameters {
string(defaultValue: '', description: 'Enter the Numerator', name: 'Num')
string(defaultValue: '', description: 'Enter the Denominator', name: 'Den')
}
stages {
stage("foo") {
steps {
script {
if ( "$Den".toInteger() == 0) {
env.Den = input(
id: 'userInput', message: 'Wrong denominator, give it another try?', parameters: [
[$class: 'TextParameterDefinition', defaultValue: '', description: 'Den', name: 'den']
]
)
}
}
sh'''#!/bin/bash +x
echo "Numerator: $Num\nDenominator: $Den"
echo "Output: $((Num/Den))"
'''
}
}
}
}
If you want to go the extra mile and ask for both values:
def userInput = input(
id: 'userInput', message: 'Let\'s re-enter everything?', parameters: [
[$class: 'TextParameterDefinition', defaultValue: '', description: 'Denominator', name: 'den'],
[$class: 'TextParameterDefinition', defaultValue: '', description: 'Numerator', name: 'num']
]
)
print userInput
env.Den = userInput.den
env.Num = userInput.num