Jenkins input step do something after reach waiting threshold limit - jenkins

Question

I have a stage in my pipeline job that requires user input to proceed to the next stage. The problem is sometime I forget to click the proceed button after N minutes of waiting. I want to send a Slack message to notify me that the stage has been paused for N minutes. Is there a way to achieve it?
Below is the sample of my pipeline script:
pipeline {
agent any
stages {
stage('A') {
steps {
echo 'Starting Stage A'
input message: 'Continue to the next stage?'
// send Slack message after 15 minutes user didn't click Proceed/Abort button
// but still wait for user input (don't mark it as failed even after 15 minutes)
}
}
stage('B') {
steps {
echo 'Starting Stage B'
}
}
}
}
I have tried using Jenkins timeout feature using the pipeline script below
But, if the timeout is reached, it will continue to the next stage automatically. What I want is even after the timeout is reached, still wait for user input on Stage A (don't continue to the Stage B immediately)
pipeline {
agent any
stages {
stage('A') {
steps {
script {
try {
echo 'Starting Stage A'
timeout(time: 15, unit: 'MINUTES') {
input message: 'Continue to the next stage?'
}
} catch (err) {
def user = err.getCauses()[0].getUser()
if ('SYSTEM' == user.toString()) { // failed because of timeout
// send Slack message
// how to still wait for user input on this stage even after timeout is reached?
}
}
}
}
}
stage('B') {
steps {
echo 'Starting Stage B'
}
}
}
}
Thanks

Answer 1

I figured it out using the script below:
pipeline {
agent any
stages {
stage('A') {
steps {
script {
echo 'Starting Stage A'
def showInputAgain = false
def proceed = true
try {
timeout(time: 15, unit: 'SECONDS') {
input message: 'Continue?'
}
} catch (err) {
def user = err.getCauses()[0].getUser()
if ('SYSTEM' == user.toString()) {
showInputAgain = true
echo 'Stage A failed. Reach timeout. Sending message to Slack'
} else {
proceed = false
echo 'Stage A failed. User abort'
}
}
if (proceed && showInputAgain) {
input message: 'Continue?'
}
}
}
}
stage('B') {
steps {
echo 'Starting Stage B'
}
}
}
}
But any other inputs/answers will be appreciated