Set up Zuul init scripts.

Reload Zuul on changes to config files.

Change-Id: I7719a72b8d727490902d1226bfe1637c3f84d6d7

modules/zuul/files/zuul.init

@@ -0,0 +1,146 @@
+#! /bin/sh
+### BEGIN INIT INFO
+# Provides:          zuul
+# Required-Start:    $remote_fs $syslog
+# Required-Stop:     $remote_fs $syslog
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: Zuul
+# Description:       Trunk gating system
+### END INIT INFO
+
+# Do NOT "set -e"
+
+# PATH should only include /usr/* if it runs after the mountnfs.sh script
+PATH=/sbin:/usr/sbin:/bin:/usr/bin
+DESC="Zuul"
+NAME=zuul
+DAEMON=/usr/local/bin/zuul-server
+PIDFILE=/var/run/$NAME/$NAME.pid
+SCRIPTNAME=/etc/init.d/$NAME
+USER=jenkins
+
+# Exit if the package is not installed
+[ -x "$DAEMON" ] || exit 0
+
+# Read configuration variable file if it is present
+[ -r /etc/default/$NAME ] && . /etc/default/$NAME
+
+# Load the VERBOSE setting and other rcS variables
+. /lib/init/vars.sh
+
+# Define LSB log_* functions.
+# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
+. /lib/lsb/init-functions
+
+#
+# Function that starts the daemon/service
+#
+do_start()
+{
+	# Return
+	#   0 if daemon has been started
+	#   1 if daemon was already running
+	#   2 if daemon could not be started
+
+        mkdir -p /var/run/$NAME
+	chown $USER /var/run/$NAME
+	start-stop-daemon --start --quiet --pidfile $PIDFILE -c $USER --exec $DAEMON --test > /dev/null \
+		|| return 1
+	start-stop-daemon --start --quiet --pidfile $PIDFILE -c $USER --exec $DAEMON -- \
+		$DAEMON_ARGS \
+		|| return 2
+	# Add code here, if necessary, that waits for the process to be ready
+	# to handle requests from services started subsequently which depend
+	# on this one.  As a last resort, sleep for some time.
+}
+
+#
+# Function that stops the daemon/service
+#
+do_stop()
+{
+	# Return
+	#   0 if daemon has been stopped
+	#   1 if daemon was already stopped
+	#   2 if daemon could not be stopped
+	#   other if a failure occurred
+	start-stop-daemon --stop --signal 9 --pidfile $PIDFILE
+	RETVAL="$?"
+	[ "$RETVAL" = 2 ] && return 2
+	rm -f /var/run/$NAME/*
+	return "$RETVAL"
+}
+
+#
+# Function that sends a SIGHUP to the daemon/service
+#
+do_reload() {
+	#
+	# If the daemon can reload its configuration without
+	# restarting (for example, when it is sent a SIGHUP),
+	# then implement that here.
+	#
+	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name zuul-server
+	return 0
+}
+
+case "$1" in
+  start)
+	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
+	do_start
+	case "$?" in
+		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+	esac
+	;;
+  stop)
+	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
+	do_stop
+	case "$?" in
+		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+	esac
+	;;
+  status)
+       status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
+       ;;
+  reload|force-reload)
+	#
+	# If do_reload() is not implemented then leave this commented out
+	# and leave 'force-reload' as an alias for 'restart'.
+	#
+	log_daemon_msg "Reloading $DESC" "$NAME"
+	do_reload
+	log_end_msg $?
+	;;
+  restart)
+	#
+	# If the "reload" option is implemented then remove the
+	# 'force-reload' alias
+	#
+	log_daemon_msg "Restarting $DESC" "$NAME"
+	do_stop
+	case "$?" in
+	  0|1)
+		do_start
+		case "$?" in
+			0) log_end_msg 0 ;;
+			1) log_end_msg 1 ;; # Old process is still running
+			*) log_end_msg 1 ;; # Failed to start
+		esac
+		;;
+	  *)
+	  	# Failed to stop
+		log_end_msg 1
+		;;
+	esac
+	;;
+  *)
+	#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
+	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
+	exit 3
+	;;
+esac
+
+:

modules/zuul/manifests/init.pp

@@ -1,6 +1,7 @@
 class zuul ()
 {
   $packages = ["python-webob",
+               "python-daemon",
                "python-paste"]
 
   package { $packages:
@@ -40,4 +41,32 @@ class zuul ()
     ensure => "directory",
     owner => 'jenkins'
   }
+
+  file { "/var/run/zuul":
+    ensure => "directory",
+    owner => 'jenkins'
+  }
+
+  file { "/etc/init.d/zuul/":
+    owner => 'root',
+    group => 'root',
+    mode => 555,
+    ensure => 'present',
+    source => 'puppet:///modules/zuul/zuul.init',
+  }
+
+  exec { "zuul-reload":
+      command => '/etc/init.d/zuul reload',
+      require => File['/etc/init.d/zuul'],
+      refreshonly => true,
+      subscribe => [ File["/etc/zuul/layout.yaml"], File["/etc/zuul/logging.conf"], ],
+  }
+
+  service { 'zuul':
+    name       => 'zuul',
+    enable     => true,
+    hasrestart => true,
+    require => File['/etc/init.d/zuul'],
+  }
+
 }