jenkins-slave.RedHat.erb

#!/bin/bash
#
# /etc/init.d/jenkins-slave
# init script for Jenkins Slave Swarm Client.
#
# chkconfig: 2345 90 60
# description: Jenkins Slave Swarm Client
#
RETVAL=0

NAME=jenkins-slave
JENKINS_CONFIG=/etc/sysconfig/$NAME
LOCK_FILE=/var/lock/subsys/$NAME
PIDFILE=/var/run/$NAME/$NAME.pid

# Source function library.
. /etc/init.d/functions

# Read config
[ -f "$JENKINS_CONFIG" ] && . "$JENKINS_CONFIG"

if [ -x /sbin/runuser ] ; then
    RUNUSER=runuser
else
    RUNUSER=su
fi

slave_start() {
  echo Starting Jenkins Slave...

  # the default location is /var/run/jenkins/jenkins.pid but the parent directory needs to be created
  mkdir `dirname $PIDFILE` > /dev/null 2>&1 || true
  chown $JENKINS_SLAVE_USER `dirname $PIDFILE`

  # create log directory
  mkdir -p `dirname $JENKINS_SLAVE_LOG` > /dev/null 2>&1 || true
  chown $JENKINS_SLAVE_USER -R `dirname $JENKINS_SLAVE_LOG`

  # export is required for sysconfig values to be inherited by the su/runuser
  # env
  export_sysconfig

  # --user in daemon doesn't prepare environment variables like HOME, USER, LOGNAME or USERNAME,
  # so we let su do so for us now
  $RUNUSER $JENKINS_SLAVE_USER -c "<%= scope['jenkins::slave::slave_home'] %>/jenkins-slave-run >> $JENKINS_SLAVE_LOG 2>&1 &"
  # the shell may take a moment to exec the jvm causing pgrep to come up empty
  sleep 1
  pgrep -f -u $JENKINS_SLAVE_USER $JENKINS_SLAVE_JAR > $PIDFILE
  RETVAL=$?
  [ $RETVAL -eq 0 ] && touch $LOCK_FILE
}
slave_stop() {
  echo Stopping Jenkins Slave...
  pid=`cat $PIDFILE`

  killproc -p $PIDFILE

  # Wait until the monitor exits
  while (checkpid $pid)
  do
      usleep 100000
  done

  RETVAL=$?
  [ $RETVAL -eq 0 ] && rm -f $LOCK_FILE
}

slave_restart() {
  echo Restarting Jenkins Slave...
  slave_stop
  slave_start

  RETVAL=$?
  [ $RETVAL -eq 0 ] && touch $LOCK_FILE
}
slave_status() {
  echo Jenkins Slave status:
  status -p $PIDFILE
  RETVAL=$?
}

export_sysconfig() {
  local sysconfig=(
    JAVA
    JAVA_ARGS
    JENKINS_SLAVE_USER
    JENKINS_SLAVE_JAR
    JENKINS_SLAVE_LOG
    JENKINS_SLAVE_MODE
    MAXOPENFILES
    MASTER_URL
    AUTO_DISCOVERY_ADDRESS
    LABELS
    EXECUTORS
    CLIENT_NAME
    FSROOT
    DESCRIPTION
    TUNNEL
    JENKINS_USERNAME
    JENKINS_PASSWORD
    OTHER_ARGS
    DISABLE_CLIENTS_UNIQUE_ID
    DISABLE_SSL_VERIFICATION
    DELETE_EXISTING_CLIENTS
    TOOL_LOCATIONS
  )

  for v in ${sysconfig[*]}; do
    [[ -n "${v+x}" ]] && export $v
  done
}

case "$1" in
  start)
    slave_start
    ;;
  stop)
    slave_stop
    ;;
  restart)
    slave_restart
    ;;
  status)
    slave_status
    ;;
  *)
    echo "Usage: $0 {start|stop|restart|status}"
    exit 1
    ;;
esac

exit $RETVAL