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#!/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. 


exec 1> /tmp/postgresql-prep.out 2>&1
set -x
if [ -d /opt/app/postgresql-9.5.2 ]
then export OPENECOMP=false NOTOPENECOMP=true
else export OPENECOMP=true NOTOPENECOMP=false
fi

echo STARTING $0 $(date)
umask 0
echo STARTING $0 $(date) >> /tmp/pgaas.inst.report

die()
{
    echo $0: "$@" 1>&2
    echo $0: "$@"
    umask 022
    echo $0: "$@" >> /tmp/pgaas-failures
    exit 1
}

id
umask 022

TMP=$( mktemp /tmp/pgprep.$$.XXXXXXXXXX )
trap 'rm -f $TMP' 0 1 2 3 15

if $OPENECOMP
then INSTALL_ROOT=
fi

CONFDIR=/var/config/DCAE/chef
CONFCOUNT=$(ls $CONFDIR/*-postgres.conf 2>/dev/null | wc -l)
case "$CONFCOUNT" in
1 )
    # master: masternode
    # master2: secondmasternode
    # in DCAE, these values could be in postgres.conf or already in the environment
    # DRTR_NODE_KSTOREFILE: /opt/app/dcae-certificate/keystore.jks
    # DRTR_NODE_KSTOREPASS: "No Certificate"
    # DRTR_NODE_PVTKEYPASS: "No Certificate"
    # PG_NODES : uiopmno1qwpstg00.research.example.com|asbczw1vepstg00.dcae.simpledemo.openecomp.org
    # PG_JAVA_HOME : /opt/app/java/jdk/jdk170
    # PG_CLUSTER : global
    cat $CONFDIR/*-postgres.conf | sed -e 's/ *: */="/' -e 's/[ 	]*$/"/' -e 's/=""/="/' -e 's/""$/"/' > $TMP
    . $TMP
    ;;
0 ) ;;
* )
    die "More than one postgres.conf was found: $(ls $CONFDIR/*-postgres.conf 2>&1)"
esac

[ -n "$PG_NODES" ] || die "PG_NODES is not set"
[ -n "$PG_CLUSTER" ] || die "PG_CLUSTER is not set"
[ -n "$DRTR_NODE_KSTOREFILE" ] || die "DRTR_NODE_KSTOREFILE is not set"
[ -n "$DRTR_NODE_KSTOREPASS" ] || die "DRTR_NODE_KSTOREPASS is not set"
[ -n "$DRTR_NODE_PVTKEYPASS" ] || die "DRTR_NODE_PVTKEYPASS is not set"

# create various directories with proper permissions
mkdir -p ${INSTALL_ROOT}/dbroot/pgdata/main \
    ${INSTALL_ROOT}/dbroot/pgdata/pgaas \
    ${INSTALL_ROOT}/dbroot/pglogs/main \
    ${INSTALL_ROOT}/var/run/postgresql \
    ${INSTALL_ROOT}/opt/app/log/postgresql/init \
    ${INSTALL_ROOT}/opt/app/log/postgresql/server \
    ${INSTALL_ROOT}/opt/app/log/postgresql/idns 
chmod 700 ${INSTALL_ROOT}/dbroot/pgdata/pgaas 
chmod 700 ${INSTALL_ROOT}/dbroot/pglogs
chmod 700 ${INSTALL_ROOT}/dbroot/pgdata/main

if $OPENECOMP
then
    if [ -d /var/lib/postgresql/9.5 ]
    then VER=9.5
    elif [ -d /var/lib/postgresql/9.6 ]
    then VER=9.6
    else die "Cannot determine version of PostgreSQL. Looking for /var/lib/postgresql/9.[56]."
    fi
    mv /var/lib/postgresql/$VER/main /var/lib/postgresql/$VER/main.sv
    ln -s /dbroot/dbdata/main /var/lib/postgresql/$VER/main

    mv /etc/postgresql/$VER/main /etc/postgresql/$VER/main.sv
    ln -s /opt/app/postgresql-config/main /etc/postgresql/$VER/main

fi

chown -R postgres:postgres ${INSTALL_ROOT}/dbroot ${INSTALL_ROOT}/var/run/postgresql ${INSTALL_ROOT}/opt/app/log/postgresql ${INSTALL_ROOT}/opt/app/log/postgresql/idns

chmod 711 ~postgres

# fix up the CDF package so that it works
if [ ! -L /opt/cdf ]
then rm -f /opt/cdf; ln -sf /opt/app/cdf /opt/cdf
fi

# and save some values within
(
    echo "allpgnodes=\"$PG_NODES\""
    case "$PG_CLUSTER" in
	global | central )
	    cnodes=$( ${INSTALL_ROOT}/opt/app/postgresql-prep/bin/gen-repmgr-info -n "$PG_NODES" -p )
	    echo "pgnodes=\"$cnodes\""
	    echo "cluster=central"
	    shanodes=$( ${INSTALL_ROOT}/opt/app/postgresql-prep/bin/gen-repmgr-info -n "$PG_NODES" -P )
	    ;;
        site | edge )
	    HOSTNAME=$( hostname -f )
	    lnodes=$( ${INSTALL_ROOT}/opt/app/postgresql-prep/bin/gen-repmgr-info -n "$PG_NODES" -e $HOSTNAME )
	    echo "pgnodes=\"$lnodes\""
	    if [ -z "$lnodes" ]
	    then die "Cannot determine the name of the system. hostname -f ($HOSTNAME) is not found in PG_NODES ($PG_NODES)"
	    fi
	    shanodes=$( ${INSTALL_ROOT}/opt/app/postgresql-prep/bin/gen-repmgr-info -n "$PG_NODES" -E $HOSTNAME )
	    echo "cluster=edge"
	    ;;
        * ) die "Cannot determine what type of cluster this is. PG_CLUSTER should be either 'global/central' or 'site/edge'" ;;
    esac

    echo "drtr_node_kstorefile=$DRTR_NODE_KSTOREFILE"
    echo "ENCRYPTME.AES.drtr_node_kstorepass='$DRTR_NODE_KSTOREPASS'" | ${INSTALL_ROOT}/opt/app/cdf/bin/setencryptedvalues
    echo "ENCRYPTME.AES.drtr_node_pvtkeypass='$DRTR_NODE_PVTKEYPASS'" | ${INSTALL_ROOT}/opt/app/cdf/bin/setencryptedvalues
    echo "ENCRYPTME.AES.wgetpswd=$shanodes" | ${INSTALL_ROOT}/opt/app/cdf/bin/setencryptedvalues
) >> ${INSTALL_ROOT}/opt/app/cdf/lib/cdf.cfg

# install the init scripts for postgresql
# init.d-pgaas init-pgaas-idns.conf init-pgaas-init.conf logrotate

INIT=${INSTALL_ROOT}/opt/app/postgresql-prep/init

if [ -d /lib/systemd/system -a -f /bin/systemctl ]
then
    su postgres -c "crontab $INIT/pglogs.cron"

    # no need to create the /var/run directory because postgresql package already does it

    # install the init script for iDNS
    cp $INIT/systemd-pgaas-idns.service /lib/systemd/system/pgaas-idns.service
    systemctl stop pgaas-idns 
    sleep 1
    systemctl start pgaas-idns 

else
    INITDEST=${INSTALL_ROOT}/opt/app/platform/init.d/pgaas
    cp $INIT/init.d-pgaas $INITDEST
    chown postgres:postgres $INITDEST
    chmod 755 $INITDEST

    cd ${INSTALL_ROOT}/opt/app/platform/rc.d
    ln -sf ../init.d/pgaas K20pgaas
    ln -sf ../init.d/pgaas S20pgaas

    CRONDIR=${INSTALL_ROOT}/opt/app/platform/cron/postgres
    mkdir $CRONDIR
    chown postgres:postgres $CRONDIR
    chmod 755 $CRONDIR
    cp $INIT/pglogs.cron $CRONDIR/pglogs.cron
    su postgres -c "sh -x ${INSTALL_ROOT}/opt/app/platform/bin/mergeCron"

    # install the init script for init
    cp $INIT/init-pgaas-init.conf ${INSTALL_ROOT}/etc/init/pgaas-init.conf
    service pgaas-init stop
    sleep 1
    service pgaas-init start

    # install the init script for iDNS
    cp $INIT/init-pgaas-idns.conf ${INSTALL_ROOT}/etc/init/pgaas-idns.conf
    service pgaas-idns stop
    sleep 1
    service pgaas-idns start
fi

cp $INIT/logrotate ${INSTALL_ROOT}/etc/logrotate.d/pgaas
chown root:root ${INSTALL_ROOT}/etc/logrotate.d/pgaas
chmod 644 ${INSTALL_ROOT}/etc/logrotate.d/pgaas

echo ENDING $0 $(date)
echo ENDING $0 $(date) >> /tmp/pgaas.inst.report
if $NOTOPENECOMP
then sed -n '/^STARTING/,/^ENDING/p' `dirname $0`/../../proc_out >> /tmp/pgaas.inst.report 
fi