#!/bin/sh -e
#
# 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.#
# IF YOU ARE READING THIS, YOU ARE VIOLATING YOUR LICENSE AGREEMENT.
#
# $Id$

# Check superuser status
if [ `id -u` != "0" ]; then
    echo "$0: This script must be run as root"
    exit 1
fi

if ( /usr/bin/dotlockfile -l -r 0 /var/run/metacarta/reset-crawler-in-progress.lock ) ; then
	trap "/usr/bin/dotlockfile -u /var/run/metacarta/reset-crawler-in-progress.lock" EXIT
	# This will also block postgres-maintenance from running
	# Don't allow script to act if daemon checker in progress
	if [ "/usr/bin/dotlockfile -c /var/run/metacarta/check_agentsrunning_in_progress.lock" ] ; then
		# Don't allow script to actually act if authority check in progress
		if [ "/usr/bin/dotlockfile -c /var/run/metacarta/check_authorities_in_progress.lock" ] ; then
			# Don't allow script to actually act if postgres maintenance underway
			if [ "/usr/bin/dotlockfile -c /var/run/metacarta/postgres-maintenance-in-progress.lock" ] ; then
				# Shut down crawler
				/etc/init.d/metacarta-agents stop || true
				# Shut down tomcat5.5
				/etc/init.d/tomcat5.5 stop || true
				# Clean the locks
				su -p -s /bin/sh tomcat55 -c "/usr/lib/metacarta/core-lockclean"
				# Restart tomcat
				/etc/init.d/tomcat5.5 start
				# Restart crawler
				/etc/init.d/metacarta-agents start
				echo "$0: Crawler reset successfully completed."
			else
				echo "$0: Postgresql maintenance in progress; please try later"
			fi
		else
			echo "$0: Authority check in progress; please try later"
		fi
	else
		echo "$0: Agents running check in progress; please try later"
	fi
else
        echo "$0: reset-crawler already in progress - skipping"
fi