Script to keep Jenkins Agent persistent from cron

ci/platforms/config.hera

@@ -5,3 +5,6 @@ export ICSDIR_ROOT=/scratch1/NCEPDEV/global/glopara/data/ICSDIR
 export HPC_ACCOUNT=nems
 export max_concurrent_cases=5
 export max_concurrent_pr=4
+
+export JENKINS_AGENT_LANUCH_DIR=/scratch1/NCEPDEV/global/Terry.McGuinness/Jenkins
+export JENKINS_WORK_DIR=/scratch1/NCEPDEV/global/Terry.McGuinness

ci/platforms/config.hercules

@@ -5,3 +5,6 @@ export ICSDIR_ROOT=/work/noaa/global/glopara/data/ICSDIR
 export HPC_ACCOUNT=nems
 export max_concurrent_cases=5
 export max_concurrent_pr=4
+
+export JENKINS_AGENT_LANUCH_DIR=/home/role-nems/GFS_CI_ROOT_JENKINS/AGENT_mterry
+export JENKINS_WORK_DIR=/home/role-nems/GFS_CI_ROOT_JENKINS

ci/platforms/config.orion

@@ -5,3 +5,6 @@ export ICSDIR_ROOT=/work/noaa/global/glopara/data/ICSDIR
 export HPC_ACCOUNT=nems
 export max_concurrent_cases=5
 export max_concurrent_pr=4
+
+export JENKINS_AGENT_LANUCH_DIR=/home/role-nems/GFS_CI_ROOT_JENKINS/AGENT_mterry
+export JENKINS_WORK_DIR=/home/role-nems/GFS_CI_ROOT_JENKINS

ci/scripts/utils/launch_java_agent.sh

@@ -0,0 +1,77 @@
+#!/bin/env bash
+set -e
+
+controller_url="https://jenkins.epic.oarcloud.noaa.gov"
+controller_user="terry.mcguinness"
+HOMEgfs="$(cd "$(dirname  "${BASH_SOURCE[0]}")/../../.." >/dev/null 2>&1 && pwd )"
+host=$(hostname)
+
+#########################################################################
+#  Set up runtime environment varibles for accounts on supproted machines
+#########################################################################
+
+source "${HOMEgfs}/ush/detect_machine.sh"
+case ${MACHINE_ID} in
+  hera | orion | hercules | wcoss2)
+   echo "Launch Jenkins Java Controler on ${MACHINE_ID}"
+   ;;
+ *)
+   echo "Unsupported platform. Exiting with error."
+   exit 1
+   ;;
+esac
+
+LOG=lanuched_agent-$(date +%Y%m%d%M).log
+rm -f "${LOG}"
+
+source "${HOMEgfs}/ush/module-setup.sh"
+module use "${HOMEgfs}/modulefiles"
+module load "module_gwsetup.${MACHINE_ID}"
+source "${HOMEgfs}/ci/platforms/config.${MACHINE_ID}"
+
+JAVA_HOME="${JENKINS_AGENT_LANUCH_DIR}/JAVA/jdk-17.0.10"
+if [[ ! -d "${JAVA_HOME}" ]]; then
+  JAVA_HOME=/usr/lib/jvm/jre-17
+  if [[ ! -d "${JAVA_HOME}" ]]; then
+    echo "ERROR: JAVA_HOME not found. Exiting with error."
+    exit 1
+  fi
+fi
+
+JAVA="${JAVA_HOME}/bin/java"
+echo "JAVA VERSION: "
+${JAVA} -version
+
+export GH="${HOME}/bin/gh"
+command -v "${GH}"
+${GH} --version
+
+if [[ -d "${JENKINS_AGENT_LANUCH_DIR}" ]]; then
+  echo "Jenkins Agent Lanuch Directory: ${JENKINS_AGENT_LANUCH_DIR}"
+else
+  echo "ERROR: Jenkins Agent Lanuch Directory not found. Exiting with error."
+  exit 1
+fi
+cd "${JENKINS_AGENT_LANUCH_DIR}"
+
+if ! [[ -f agent.jar ]]; then
+  curl -sO "${controller_url}/jnlpJars/agent.jar"
+fi
+
+JENKINS_TOKEN=$(cat jenkins_token)
+
+# 
+offline=$(curl --silent -u "${controller_user}:${JENKINS_TOKEN}" "${controller_url}/computer/${MACHINE_ID^}-EMC/api/json?pretty=true" | grep '\"offline\"' | awk '{gsub(/,/,"");print $3}') || true
+echo "Jenkins Agent offline setting: ${offline}"
+
+if [[ "${offline}" == "true" ]]; then
+  echo "Jenkins Agent is offline. Lanuching Jenkins Agent on ${host}"
+  command="nohup ${JAVA} -jar agent.jar -jnlpUrl ${controller_url}/computer/${MACHINE_ID^}-EMC/jenkins-agent.jnlp  -secret @jenkins-secret-file -workDir ${JENKINS_WORK_DIR}"
+  echo -e "Lanuching Jenkins Agent on ${host} with the command:\n${command}" >& "${LOG}"
+  ${command} >> "${LOG}" 2>&1 &
+  nohup_PID=$!
+  echo "Java agent running on PID: ${nohup_PID}" >> "${LOG}" 2>&1
+  echo "Java agent running on PID: ${nohup_PID}"
+else
+  echo "Jenkins Agent is online (nothing done)"
+fi