Jenkins to set parameter dynamically - jenkins

I have a Jenkins job that I need to set a parameter, if the user choose "EXISTING" to use an existing file, then the next parameter should be a dropdown with a list the existing file names for user to choose. If the user choose "NEW", the next parameter should be a string parameter for user to enter a file name.
I can not find how to use Active Choices Parameter and Active Choices Reactive Parameter to accomplish this. Maybe I am looking at the wrong direction?
For the first parameter CHOICE, I have the groovy script:
return [
"EXISTING",
"NEW"
]
for the second parameter FILES, I have this:
if (CHOICE.equals("EXISTING")) {
return ["file1","file2",..."filen"]
}
else if (CHOICE.equals("NEW")) {
return []
}
This does not do what I want.
How do I make the second parameter to allow user's input when the first parameter is "NEW"? Or to make the code to use two additional different parameters, one to show the existing file list when user choose EXISTING and one to let user enter a file name if the user choose NEW?
After I pick up the parameter values from above, I will pass them to a ansible playbook in the Build section.
Thanks!

The following will work for you. If you want to get the choices from a function, you can also do that.
def INPUT_1 = ""
def INPUT_2 = ""
pipeline {
agent any
stages {
stage("Get File Name") {
steps{
timeout(time: 300, unit: 'SECONDS') {
script {
// The Initial Choice
INPUT_1 = input message: 'Please select', ok: 'Next',
parameters: [
choice(name: 'PRODUCT', choices: ['NEW','EXISTING'], description: 'Please select')]
if(INPUT_1.equals("NEW")) {
INPUT_2 = input message: 'Please Name the file', ok: 'Next',
parameters: [string(name: 'File Name', defaultValue: 'abcd.txt', description: 'Give me a name for the file?')]
} else {
INPUT_2 = input message: 'Please Select the File', ok: 'Next',
parameters: [
choice(name: 'File Name', choices: ["file1","file2","filen"], description: 'Select the file')]
}
echo "INPUT 1 ::: ${INPUT_1}"
echo "INPUT 2 ::: ${INPUT_2}"
}
}
}
}
}
post {
success {
echo 'The process is successfully Completed....'
}
}
}

Related

Jenkins Mask Password exposes the secret text when call from return keyword

I used jenkins Mask Password to mask the secret text and works good. BUT when trying to call this secret text from seperate method using return then it exposes the text.
properties([
parameters([
password(name: 'Passwd', description: 'Encryption key')
])
])
// function of mask text ---
def getAppPassword(){
wrap([$class: 'MaskPasswordsBuildWrapper', varPasswordPairs: [[var: 'SECRET', password: Passwd]], varMaskRegexes: []]) {
echo "${Passwd}" // here text get mask
return "${Passwd}" //
}
}
// declarative pipeline --
pipeline {
agent any
// setting up as environment varible to access it throught out the file.
environment {
ExecutorPassword = getAppPassword()
}
stages {
stage('Hello') {
steps {
bat "--${ExecutorPassword} "
if ("${ExecutorPassword}" == "12324") {echo "Equal!"}
else{ echo "Mark" };
}
}
}
}
From last three days I stuck here. Please help.
In getAppPassword() function echo "${Passwd}" returns a secret text as masked like ***.
But when I called the function getAppPassword() in pipeline under step bat "--${ExecutorPassword} ". it expose the secret text in console.
Tried with single quote and double quote both.
When used double quote " it expose the secret text. when used
When used single quote ' it returns ${ExecutorPassword} varible as it is.
Instead of passing the password in parameter you can use two different methods.
Use Jenkins credentials vault as it will automatically encrypt your password with AES encryption.
Use input function to get the password in between of running build and putting the variable which store the password in limited scope will help you secure and you can also do masking on it and then destroy the variable or make it null as soon as your works done. Here is a small example.
` if(authType != 'W'){
def userName = input(
id: 'userName', message: 'SQL Username', parameters: [
[$class: 'hudson.model.TextParameterDefinition', defaultValue :'', name: 'Username', description: 'Please enter your username']
])
def userPassword = input(
id: 'userPassword', message: 'SQL Password', parameters: [
[$class: 'hudson.model.PasswordParameterDefinition', defaultValue :'', name: 'Passwrd', description: 'Please enter your password']
])
wrap([$class: 'MaskPasswordsBuildWrapper', varPasswordPairs: [[password: "${userPassword}", var: 'Passwrd']]]) {
//your command to use credentials here
println(userPassword) //password will appear encrypted like *******}
userPassword = '' // you can close if statement and limit scope of variable to here or you can just empty the variable if you can't close the scope.}
`

How to fix --tag" flag: invalid reference format: repository name must be lowercase in a Jenkins delcarative pipeline? [duplicate]

How can I convert all the parameters in a Jenkins pipeline to lowercase. Similar to trim, is there an attribute that one could add as part of the parameter declaration,
For trim, I have something like below,
parameters {
string defaultValue: '', description: 'Some dummy parameter', name: 'someparameter', trim: true
}
In my pipeline job, I have more than 10 string parameters and would like to convert them all to lowercase
Here's one approach:
pipeline {
agent any
parameters {
string ( name: 'testName', description: 'name of the test to run')
}
stages {
stage('only') {
environment {
TEST_NAME=params.testName.toLowerCase()
}
steps {
echo "the name of the test to run is: ${params.testName}"
sh 'echo "In Lower Case the test name is: ${TEST_NAME}"'
}
}
}
}
sh """ ${the_parameter.toLowerCase()} """
Need to use double quote so you have a GString
Put the toLowerCase() function call inside the brace for shell to refer back to groovy
Actually one can just do
VAR = "${VAR.toLowerCase()}"
Had to use this for my use case. It will not convert but it will prevent passing wrong value.
validatingString(name: "MYVAR",
defaultValue: "",
regex: /^[a-z0-9]+$/,
failedValidationMessage: "",
description: "")

How to configure dynamic parameters in declarative pipeline (Jenkinsfile)?

Using the declarative pipeline syntax, I want to be able to define parameters based on an array of repos, so that when starting the build, the user can check/uncheck the repos that should not be included when the job runs.
final String[] repos = [
'one',
'two',
'three',
]
pipeline {
parameters {
booleanParam(name: ...) // static param
// now include a booleanParam for each item in the `repos` array
// like this but it's not allowed
script {
repos.each {
booleanParam(name: it, defaultValue: true, description: "Include the ${it} repo in the release?")
}
}
}
// later on, I'll loop through each repo and do stuff only if its value in `params` is `true`
}
Of course, you can't have a script within the parameters block, so this won't work. How can I achieve this?
Using the Active Choices Parameter plugin is probably the best choice, but if for some reason you can't (or don't want to) use a plugin, you can still achieve dynamic parameters in a Declarative Pipeline.
Here is a sample Jenkinsfile:
def list_wrap() {
sh(script: 'echo choice1 choice2 choice3 choice4 | sed -e "s/ /\\n/g"', , returnStdout: true)
}
pipeline {
agent any
stages {
stage ('Gather Parameters') {
steps {
timeout(time: 30, unit: 'SECONDS') {
script {
properties([
parameters([
choice(
description: 'List of arguments',
name: 'service_name',
choices: 'DEFAULT\n' + list_wrap()
),
booleanParam(
defaultValue: false,
description: 'Whether we should apply changes',
name: 'apply'
)
])
])
}
}
}
}
stage ('Run command') {
when { expression { params.apply == true } }
steps {
sh """
echo choice: ${params.service_name} ;
"""
}
}
}
}
This embeds a script {} in a stage, which calls a function, which runs a shell script on the agent/node of the Declarative Pipeline, and uses the script's output to set the choices for the parameters. The parameters are then available in the next stages.
The gotcha is that you must first run the job with no build parameters in order for Jenkins to populate the parameters, so they're always going to be one run out of date. That's why the Active Choices Parameter plugin is probably a better idea.
You could also combine this with an input command to cause the pipeline to prompt the user for a parameter:
script {
def INPUT_PARAMS = input message: 'Please Provide Parameters', ok: 'Next',
parameters: [
choice(name: 'ENVIRONMENT', choices: ['dev','qa'].join('\n'), description: 'Please select the Environment'),
choice(name: 'IMAGE_TAG', choices: getDockerImages(), description: 'Available Docker Images')]
env.ENVIRONMENT = INPUT_PARAMS.ENVIRONMENT
env.IMAGE_TAG = INPUT_PARAMS.IMAGE_TAG
}
Credit goes to Alex Lashford (https://medium.com/disney-streaming/jenkins-pipeline-with-dynamic-user-input-9f340fb8d9e2) for this method.
You can use CHOICE parameter of Jenkins in which user can select a repository.
pipeline {
agent any
parameters
{
choice(name: "REPOS", choices: ['REPO1', 'REPO2', 'REPO3'])
}
stages {
stage ('stage 1') {
steps {
// the repository selected by user will be printed
println("$params.REPOS")
}
}
}
}
You can also use the plugin Active Choices Parameter if you want to do multiple select : https://plugins.jenkins.io/uno-choice/#documentation
You can visit pipeline syntax and configure in below way to generate code snippet and you can put it in the jenkins file:
Copy the snippet code and paste it in jenkinsfile at the start.

How to create dynamic checkbox parameter in Jenkins pipeline?

I found out how to create input parameters dynamically from this SO answer
agent any
stages {
stage("Release scope") {
steps {
script {
// This list is going to come from a file, and is going to be big.
// for example purpose, I am creating a file with 3 items in it.
sh "echo \"first\nsecond\nthird\" > ${WORKSPACE}/list"
// Load the list into a variable
env.LIST = readFile (file: "${WORKSPACE}/list")
// Show the select input
env.RELEASE_SCOPE = input message: 'User input required', ok: 'Release!',
parameters: [choice(name: 'CHOOSE_RELEASE', choices: env.LIST, description: 'What are the choices?')]
}
echo "Release scope selected: ${env.RELEASE_SCOPE}"
}
}
}
}
This allows us to choose only one as it's a choice parameter, how to use the same list to create checkbox parameter, so the user can choose more than one as needed? e.g: if the user chooses first and third, then the last echo should print
Release scope selected: first,third or the following is fine too, so I can iterate over and find the true ones Release scope selected: {first: true, second: false, third: true}
I could use extendedChoice as below
agent any
stages {
stage("Release scope") {
steps {
script {
// This list is going to come from a file, and is going to be big.
// for example purpose, I am creating a file with 3 items in it.
sh "echo \"first\nsecond\nthird\" > ${WORKSPACE}/list"
// Load the list into a variable
env.LIST = readFile("${WORKSPACE}/list").replaceAll(~/\n/, ",")
env.RELEASE_SCOPE = input message: 'User input required', ok: 'Release!',
parameters: [extendedChoice(
name: 'ArchitecturesCh',
defaultValue: "${env.BUILD_ARCHS}",
multiSelectDelimiter: ',',
type: 'PT_CHECKBOX',
value: env.LIST
)]
// Show the select input
env.RELEASE_SCOPE = input message: 'User input required', ok: 'Release!',
parameters: [choice(name: 'CHOOSE_RELEASE', choices: env.LIST, description: 'What are the choices?')]
}
echo "Release scope selected: ${env.RELEASE_SCOPE}"
}
}
}
}
There is a booleanParam: https://www.jenkins.io/doc/book/pipeline/syntax/#parameters
parameters {
booleanParam(
name: 'MY_BOOLEAN',
defaultValue: true,
description: 'My boolean'
)
} // parameters
It's oddly named, as all the other param types don't have the "Param" name in them. Eg: string, choice, etc.

taking user input from user jenkins

i need to take some variables from user as input in my jenkinsfile. For this purpose in have written following code.
pipeline {
agent any
stages {
stage ('Take Input') {
steps {
script {
def INPUT_PARAMS = input message: 'Please Provide Parameters', ok: 'Next',
parameters: [
input(name: 'ENVIRONMENT', description: 'Please select the Environment')]
}
}
}
stage('clone repository') {
steps {
checkout scm
}
}
}
}
In case of choices this code is working is fine but i need user to type his answer in textbox. But i upon running job i am getting following error.
please can someone help me achieving this.

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