#!/bin/sh
#
# /etc/init.d/tomcat6 -- startup script for the Tomcat 6 servlet engine

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
### BEGIN INIT INFO
# Provides:          tomcat-vmops
# Required-Start:    $local_fs $remote_fs $network
# Required-Stop:     $local_fs $remote_fs $network
# Should-Start:      $named
# Should-Stop:       $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start Tomcat (CloudStack).
# Description:       Start the Tomcat servlet engine that runs the CloudStack Management Server.
### END INIT INFO

PATH=/bin:/usr/bin:/sbin:/usr/sbin
NAME=cloudstack-management
DESC="CloudStack-specific Tomcat servlet engine"
DAEMON=/usr/bin/jsvc
CATALINA_HOME=/usr/share/cloudstack/management
DEFAULT=/etc/cloudstack/management/tomcat6.conf
JVM_TMP=/tmp/$NAME-temp

# We have to explicitly set the HOME variable to the homedir from the user "cloud"
# This is because various scripts run by the management server read the HOME variable
# and fail when this init script is run manually.
HOME=$(echo ~cloud)

if [ `id -u` -ne 0 ]; then
	echo "You need root privileges to run this script"
	exit 1
fi
 
# Make sure tomcat is started with system locale
if [ -r /etc/default/locale ]; then
	. /etc/default/locale
	export LANG
fi

. /lib/lsb/init-functions
. /etc/default/rcS


# The following variables can be overwritten in $DEFAULT

# Run Tomcat 6 as this user ID
TOMCAT6_USER=tomcat6

# The first existing directory is used for JAVA_HOME (if JAVA_HOME is not
# defined in $DEFAULT)
JDK_DIRS="/usr/lib/jvm/java-1.6.0-openjdk-amd64/ /usr/lib/jvm/java-1.6.0-openjdk-i386/ /usr/lib/jvm/java-1.6.0-openjdk/ /usr/lib/jvm/java-6-openjdk /usr/lib/jvm/java-6-sun"

# Look for the right JVM to use
for jdir in $JDK_DIRS; do
    if [ -r "$jdir/bin/java" -a -z "${JAVA_HOME}" ]; then
	JAVA_HOME="$jdir"
    fi
done
export JAVA_HOME

# Directory for per-instance configuration files and webapps
CATALINA_BASE=/usr/share/cloudstack/management

# Use the Java security manager? (yes/no)
TOMCAT6_SECURITY=no

# Default Java options
# Set java.awt.headless=true if JAVA_OPTS is not set so the
# Xalan XSL transformer can work without X11 display on JDK 1.4+
# It also looks like the default heap size of 64M is not enough for most cases
# so the maximum heap size is set to 128M
if [ -z "$JAVA_OPTS" ]; then
	JAVA_OPTS="-Djava.awt.headless=true -Xmx128M"
fi

# End of variables that can be overwritten in $DEFAULT

# overwrite settings from default file
if [ -f "$DEFAULT" ]; then
	. "$DEFAULT"
fi

if [ ! -f "$CATALINA_HOME/bin/bootstrap.jar" ]; then
	log_failure_msg "$NAME is not installed"
	exit 1
fi

[ -f "$DAEMON" ] || exit 0

POLICY_CACHE="$CATALINA_BASE/work/catalina.policy"

JAVA_OPTS="$JAVA_OPTS -Djava.endorsed.dirs=$CATALINA_HOME/endorsed -Dcatalina.base=$CATALINA_BASE -Dcatalina.home=$CATALINA_HOME -Djava.io.tmpdir=$JVM_TMP"

# Set the JSP compiler if set in the tomcat6.default file
if [ -n "$JSP_COMPILER" ]; then
	JAVA_OPTS="$JAVA_OPTS -Dbuild.compiler=$JSP_COMPILER"
fi

if [ "$TOMCAT6_SECURITY" = "yes" ]; then
	JAVA_OPTS="$JAVA_OPTS -Djava.security.manager -Djava.security.policy=$POLICY_CACHE"
fi

# Set juli LogManager if logging.properties is provided
if [ -r "$CATALINA_BASE"/conf/logging.properties ]; then
  JAVA_OPTS="$JAVA_OPTS "-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager" "-Djava.util.logging.config.file="$CATALINA_BASE/conf/logging.properties"
fi

# Define other required variables
CATALINA_PID="/var/run/$NAME.pid"
BOOTSTRAP_CLASS=org.apache.catalina.startup.Bootstrap
JSVC_CLASSPATH="/usr/share/java/commons-daemon.jar:$CATALINA_HOME/bin/bootstrap.jar"
JSVC_CLASSPATH=$CLASSPATH:$JSVC_CLASSPATH

# Look for Java Secure Sockets Extension (JSSE) JARs
if [ -z "${JSSE_HOME}" -a -r "${JAVA_HOME}/jre/lib/jsse.jar" ]; then
    JSSE_HOME="${JAVA_HOME}/jre/"
fi
export JSSE_HOME

case "$1" in
  start)
	if [ -z "$JAVA_HOME" ]; then
		log_failure_msg "no JDK found - please set JAVA_HOME"
		exit 1
	fi

	if [ ! -d "$CATALINA_BASE/conf" ]; then
		log_failure_msg "invalid CATALINA_BASE: $CATALINA_BASE"
		exit 1
	fi

	log_daemon_msg "Starting $DESC" "$NAME"
	if start-stop-daemon --test --start --pidfile "$CATALINA_PID" \
		--user $TOMCAT6_USER --startas "$JAVA_HOME/bin/java" \
		>/dev/null; then

		# Regenerate POLICY_CACHE file
		umask 022
		echo "// AUTO-GENERATED FILE from /etc/tomcat6/policy.d/" \
			> "$POLICY_CACHE"
		echo ""  >> "$POLICY_CACHE"
		if ls $CATALINA_BASE/conf/policy.d/*.policy > /dev/null 2>&1 ; then
		cat $CATALINA_BASE/conf/policy.d/*.policy \
			>> "$POLICY_CACHE"
		fi

		# Remove / recreate JVM_TMP directory
		rm -rf "$JVM_TMP"
		mkdir "$JVM_TMP" || {
			log_failure_msg "could not create JVM temporary directory"
			exit 1
		}
		chown $TOMCAT6_USER "$JVM_TMP"
		cd "$JVM_TMP"


		# fix storage issues on nfs mounts
		umask 000
		$DAEMON -user "$TOMCAT6_USER" -cp "$JSVC_CLASSPATH" \
		    -outfile SYSLOG -errfile SYSLOG \
		    -pidfile "$CATALINA_PID" $JAVA_OPTS "$BOOTSTRAP_CLASS"

		sleep 5
        	if start-stop-daemon --test --start --pidfile "$CATALINA_PID" \
			--user $TOMCAT6_USER --startas "$JAVA_HOME/bin/java" \
			>/dev/null; then
			log_end_msg 1
		else
			log_end_msg 0
		fi
	else
	        log_progress_msg "(already running)"
		log_end_msg 0
	fi
	;;
  stop)
	log_daemon_msg "Stopping $DESC" "$NAME"
        if start-stop-daemon --test --start --pidfile "$CATALINA_PID" \
		--user "$TOMCAT6_USER" --startas "$JAVA_HOME/bin/java" \
		>/dev/null; then
		log_progress_msg "(not running)"
	else
		$DAEMON -cp "$JSVC_CLASSPATH" -pidfile "$CATALINA_PID" \
		     -stop "$BOOTSTRAP_CLASS"
	fi
	rm -rf "$JVM_TMP"
	log_end_msg 0
	;;
   status)
        if start-stop-daemon --test --start --pidfile "$CATALINA_PID" \
		--user $TOMCAT6_USER --startas "$JAVA_HOME/bin/java" \
		>/dev/null; then

		if [ -f "$CATALINA_PID" ]; then
		    log_success_msg "$DESC is not running, but pid file exists."
			exit 1
		else
		    log_success_msg "$DESC is not running."
			exit 3
		fi
	else
		log_success_msg "$DESC is running with pid `cat $CATALINA_PID`"
	fi
        ;;
  restart|force-reload)
        if start-stop-daemon --test --stop --pidfile "$CATALINA_PID" \
		--user $TOMCAT6_USER --startas "$JAVA_HOME/bin/java" \
		>/dev/null; then
		$0 stop
		sleep 1
	fi
	$0 start
	;;
  try-restart)
        if start-stop-daemon --test --start --pidfile "$CATALINA_PID" \
		--user $TOMCAT6_USER --startas "$JAVA_HOME/bin/java" \
		>/dev/null; then
		$0 start
	fi
        ;;
  *)
	log_success_msg "Usage: $0 {start|stop|restart|try-restart|force-reload|status}"
	exit 1
	;;
esac

exit 0