#!/bin/bash
# Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. 
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this code 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. 

die()
{
    echo "$@" 1>&2
    exit 1
}

export CFGDIR=/opt/app/pgaas

if [ -d /opt/app/postgresql-9.5.2 ]
then PGDIR=/opt/app/postgresql-9.5.2
elif [ -d /usr/lib/postgresql/9.6 ]
then PGDIR=/usr/lib/postgresql/9.6
elif [ -d /usr/lib/postgresql/9.5 ]
then PGDIR=/usr/lib/postgresql/9.5
else die PostgreSQL bin directory not found
fi
export PGDIR

export DBROOT=/dbroot/pgdata/main
export PATH=$PATH:/opt/app/pgaas/bin:/opt/app/pgaas/etc:/opt/app/cdf/bin:/opt/app/postgresql-config/etc

clustertype=$( getpropvalue -n cluster )
PGNODES=$( getpropvalue -n pgnodes )
case $clustertype in
    central ) 
	export MASTER=$( gen-repmgr-info -n "$PGNODES" -M "$master" )
	;;
    edge )
	host=$( hostname -f )
	export MASTER=$( gen-repmgr-info -n "$PGNODES" -C $host )
	;;
esac

[ -n "$CFGDIR" ] || die "CFGDIR is not set"
[ -n "$MASTER" ] || die "MASTER is not set"
[ -n "$PGDIR" ] || die "PGDIR is not set"
[ -n "$DBROOT" ] || die "DBROOT is not set"

# make certain that everything is down
pkill repmgrd
pkill repmgr
pg_ctl_stop

# reset the database to a fresh copy of what is on the master
create-db-secondary