#!/bin/sh
# Check for missing binaries (stale symlinks should not happen)
HUDSON_WAR="/usr/lib/hudson/hudson.war"
test -r "$HUDSON_WAR" || { echo "$HUDSON_WAR not installed"; 
    if [ "$1" = "stop" ]; then exit 0;
    else exit 5; fi; }

# Check for existence of needed config file and read it
HUDSON_CONFIG=/etc/sysconfig/hudson
test -e "$HUDSON_CONFIG" || { echo "$HUDSON_CONFIG not existing";
    if [ "$1" = "stop" ]; then exit 0;
    else exit 6; fi; }
test -r "$HUDSON_CONFIG" || { echo "$HUDSON_CONFIG not readable. Perhaps you forgot 'sudo'?";
    if [ "$1" = "stop" ]; then exit 0;
    else exit 6; fi; }

HUDSON_PID_FILE="/var/run/hudson.pid"
HUDSON_USER="hudson"
HUDSON_GROUP="hudson"

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

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

# Set up environment accordingly to the configuration settings
[ -n "$HUDSON_HOME" ] || { echo "HUDSON_HOME not configured in $HUDSON_CONFIG";
    if [ "$1" = "stop" ]; then exit 0;
    else exit 6; fi; }
[ -d "$HUDSON_HOME" ] || { echo "HUDSON_HOME directory does not exist: $HUDSON_HOME";
    if [ "$1" = "stop" ]; then exit 0;
    else exit 1; fi; }
export HUDSON_HOME

# Search usable Java. We do this because various reports indicated
# that /usr/bin/java may not always point to Java 1.5
# see http://www.nabble.com/guinea-pigs-wanted-----Hudson-RPM-for-RedHat-Linux-td25673707.html
for candidate in /usr/lib/jvm/java-1.6.0/bin/java /usr/lib/jvm/jre-1.6.0/bin/java /usr/lib/jvm/java-1.5.0/bin/java /usr/lib/jvm/jre-1.5.0/bin/java /usr/bin/java
do
  [ -x "$HUDSON_JAVA_CMD" ] && break
  HUDSON_JAVA_CMD="$candidate"
done

JAVA_CMD="$HUDSON_JAVA_CMD $HUDSON_JAVA_OPTIONS -DHUDSON_HOME=$HUDSON_HOME -jar $HUDSON_WAR"
PARAMS="--logfile=/var/log/hudson/hudson.log --daemon"
[ -n "$HUDSON_PORT" ] && PARAMS="$PARAMS --httpPort=$HUDSON_PORT"
[ -n "$HUDSON_DEBUG_LEVEL" ] && PARAMS="$PARAMS --debug=$HUDSON_DEBUG_LEVEL"
[ -n "$HUDSON_HANDLER_STARTUP" ] && PARAMS="$PARAMS --handlerCountStartup=$HUDSON_HANDLER_STARTUP"
[ -n "$HUDSON_HANDLER_MAX" ] && PARAMS="$PARAMS --handlerCountMax=$HUDSON_HANDLER_MAX"
[ -n "$HUDSON_HANDLER_IDLE" ] && PARAMS="$PARAMS --handlerCountMaxIdle=$HUDSON_HANDLER_IDLE"
[ -n "$HUDSON_ARGS" ] && PARAMS="$PARAMS $HUDSON_ARGS"

if [ "$HUDSON_ENABLE_ACCESS_LOG" = "yes" ]; then
    PARAMS="$PARAMS --accessLoggerClassName=winstone.accesslog.SimpleAccessLogger --simpleAccessLogger.format=combined --simpleAccessLogger.file=/var/log/hudson/access_log"
fi

RETVAL=0

case "$1" in
    start)
    echo -n "Starting Hudson "
    # Note, the pidfile isn't written to below but it is checked to see if the  program is already running.
    daemon  --user "$HUDSON_USER" --pidfile "$HUDSON_PID_FILE" "$JAVA_CMD" "$PARAMS" &> /var/tmp/hudson.log &
    RETVAL=$?
    if [ $RETVAL = 0 ]; then
        success
        echo > "$HUDSON_PID_FILE"  # just in case we fail to find it
            MY_SESSION_ID=`/bin/ps h -o sess -p $$`
            # get PID. Note the ww means unlimited width.
            /bin/ps hww -u "$HUDSON_USER" -o sess,ppid,pid,cmd | \
            while read sess ppid pid cmd; do
        [ "$ppid" = 1 ] || continue
        # this test doesn't work because Hudson sets a new Session ID
                # [ "$sess" = "$MY_SESSION_ID" ] || continue
            echo "$cmd" | grep $HUDSON_WAR > /dev/null
        [ $? = 0 ] || continue
        # found a PID
        echo $pid > "$HUDSON_PID_FILE"
        done
    else
        failure
    fi
    echo
    ;;
    stop)
    echo -n "Shutting down Hudson "
    killproc hudson
    RETVAL=$?
    echo
    ;;
    try-restart|condrestart)
    if test "$1" = "condrestart"; then
        echo "${attn} Use try-restart ${done}(LSB)${attn} rather than condrestart ${warn}(RH)${norm}"
    fi
    $0 status
    if test $? = 0; then
        $0 restart
    else
        : # Not running is not a failure.
    fi
    ;;
    restart)
    $0 stop
    $0 start
    ;;
    force-reload)
    echo -n "Reload service Hudson "
    $0 try-restart
    ;;
    reload)
        $0 restart
    ;;
    status)
        status hudson
    RETVAL=$?
    ;;
    probe)
    ## Optional: Probe for the necessity of a reload, print out the
    ## argument to this init script which is required for a reload.
    ## Note: probe is not (yet) part of LSB (as of 1.9)

    test "$HUDSON_CONFIG" -nt "$HUDSON_PID_FILE" && echo reload
    ;;
    *)
    echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe}"
    exit 1
    ;;
esac
exit $RETVAL
