How to change global variable in Jenkins mix pipeline? - jenkins

Question

I have a script like this [ code below ]
At the end of the stage block under node I get the desired result, but inside pipeline block I am not getting the changed value, instead it is giving me null. I tried all possible ways. Please let me know is there a way to get the changed value inside pipeline block.
def AGENT_LABEL
node('k8s-agent-large-mem-oci') {
stage('Checkout and set agent'){
sh '''
if [ ! -z "`echo ${ADE_LABEL} | grep "BRONZE"`" ]
then
AGENT_LABEL="DB_OCI"
fi
if [ ! -z "`echo ${ADE_LABEL} | grep "SILVER"`" ]
then
AGENT_LABEL="DB_OCI"
fi
if [ ! -z "`echo ${ADE_LABEL} | grep "FUSIONAPPS_11.13"`" ]
then
AGENT_LABEL="DB_ARU"
fi
echo "Final Agent Label is $AGENT_LABEL"
'''
}
}
pipeline {
agent {
label "${AGENT_LABEL}"
}
stages {
stage ('Git Copy to DB VM') {
steps {
echo "Running in ${AGENT_LABEL}"
build job: 'Git_Scripts_DB'
}
}
}
}

Answer 1

Before giving you a pipeline example, where do you set ${ADE_LABEL}?
Try this one:
pipeline {
agent none
environment {
AGENT_LABEL = """${sh(
returnStdout: true,
script: 'if [[ ! -z $(grep -E "BRONZE|SILVER" <<< "${ADE_LABEL}") ]]
then
AGENT_LABEL="DB_OCI"
fi
if [[ ! -z $(grep -E "FUSIONAPPS_11.13" <<< "${ADE_LABEL}") ]]
then
AGENT_LABEL="DB_ARU"
fi
echo "Final Agent Label is ${AGENT_LABEL}"'
).trim()}"""
}
stages {
stage ('Git Copy to DB VM') {
agent {
label "${AGENT_LABEL}"
}
steps {
echo "Running in ${AGENT_LABEL}"
build job: 'Git_Scripts_DB'
}
}
}
}