#!/bin/sh
# 
# **********
# test_3_pgbench
#
# 	This test script creates a standalone pgbench database 
#	as slony_test1 and then:
#
#	- initializes a primary node and starts the node daemon
#	- creates a set containing all 4 pgbench tables
#	- creates a second database as slony_test2
#	- adds database slony_test2 to the system
#	- starts the second replication daemon
#	- creates the pgbench tables (schema only)
#	- subscribes the replication set from the primary node
#
#	This test differs from test_1 in that it adds tables,
#	custom triggers and rewrite rules to the pgbench database.
# **********

TERMPROG=xterm
WHICHPROG=which

export PATH
TMPOUT=/tmp/output.$$
DB1=slony_test1
DB2=slony_test2
DEBUG_LEVEL=2

PGBENCH_SCALE=1
PGBENCH_CLIENTS=5
PGBENCH_TRANS=`expr 30000 / $PGBENCH_CLIENTS`

trap '
	echo ""
	echo "**** user abort"
	if [ ! -z $pgbench_pid ] ; then
		echo "**** killing pgbench"
		kill -15 $pgbench_pid
	fi
	if [ ! -z $slon1_pid ] ; then
		echo "**** killing node daemon 1"
		kill -15 $slon1_pid
	fi
	if [ ! -z $slon2_pid ] ; then
		echo "**** killing node daemon 2"
		kill -15 $slon2_pid
	fi
	exit 1
' 2 15

######################################################################
# Preparations ... create a standalone pgbench database and
# have the "application" (pgbench) running.
######################################################################

WGM=`$WHICHPROG gmake | egrep '^/'`
if [ -z "$WGM" ] ; then
    MAKE=make
    CGNU=`make -v | grep GNU`
    if [ -z "$CGNU" ] ; then
	echo "GNU Make not found - please install GNU Make"
	exit 1
    fi
else
    MAKE=gmake
fi
#####
# Make sure the install is up to date
#####
echo -n "**** running 'make install' in src directory ... "
if ! ${MAKE} -C .. install >$TMPOUT 2>&1 ; then
    echo "failed"; cat $TMPOUT; rm $TMPOUT; exit 1
fi
echo "done"
rm $TMPOUT

#####
# Remove old databases, if they exist
#####
echo "**** remove old test databases"
dropdb $DB1 || echo "**** ignored"
sleep 1
dropdb $DB2 || echo "**** ignored"
sleep 1

#####
# Create the "Primary Node"
#####
echo "**** creating database for Node 1"

createdb $DB1 || exit 1
pgbench -i -s $PGBENCH_SCALE $DB1

#
# Add a little bit of twist to the pgbench database
#
psql $DB1 <<_EOF_
	create table accounts_audit (
		au_aid		integer,
		au_seqno	serial,
		au_delta	integer,
		au_user		text,
		au_time		timestamp,

		primary key (au_aid, au_seqno),
		foreign key (au_aid) references accounts
	);

	create function accounts_audit_trig () returns trigger as '
	begin
		--
		-- Log all changes >= $800 in the special audit table
		--
		if abs(new.abalance - old.abalance) >= 800 then
			insert into accounts_audit
					(au_aid, au_delta, au_user, au_time)
					values (new.aid, (new.abalance - old.abalance),
							SESSION_USER, CURRENT_TIMESTAMP);
		end if;

		return new;
	end;
	' language plpgsql;
	create trigger accounts_audit_trig after update on accounts
		for each row execute procedure accounts_audit_trig();

	create table tellers_sum (
		su_tid		integer,
		su_sum		integer,

		primary key (su_tid),
		foreign key (su_tid) references tellers
	);
	insert into tellers_sum (su_tid, su_sum)
		select tid, 0 from tellers;

	create rule tellers_sum as on update to tellers
		do update tellers_sum 
			set su_sum = su_sum + abs(new.tbalance - old.tbalance)
			where su_tid = old.tid;
_EOF_

pg_dump -s $DB1 >pgbench_schema.sql

#####
# Start pgbench in the background and give it rampup time
#####
pgbench -n -s $PGBENCH_SCALE -c $PGBENCH_CLIENTS -t $PGBENCH_TRANS $DB1 &
pgbench_pid=$!
echo "**** pgbench is running in background with pid $pgbench_pid"
echo -n "**** sleeping 10 seconds to give pgbench time for rampup ... "
sleep 10
echo "done"

echo ""
echo "**********************************************************************"
echo "**** $DB1 is now a standalone database with a running pgbench"
echo "**********************************************************************"
echo ""

######################################################################
# Setup DB1 as the primary cluster T1 node, start the node daemon,
# and create a replication set containing the pgbench tables.
######################################################################

echo "**** initializing $DB1 as Primary Node for Slony-I cluster T1"
slonik <<_EOF_
	cluster name = T1;
	node 1 admin conninfo = 'dbname=$DB1';
	node 2 admin conninfo = 'dbname=$DB2';
	init cluster (id = 1, comment = 'Node 1');
	echo 'Database $DB1 initialized as Node 1';
_EOF_
if [ $? -ne 0 ] ; then
	kill $pgbench_pid;
	exit 1
fi

echo "**** starting the Slony-I node daemon for $DB1"
$TERMPROG -title "Slon node 1" -e sh -c "slon -d$DEBUG_LEVEL T1 dbname=$DB1; echo -n 'Enter>'; read line" &
slon1_pid=$!
echo "slon[$slon1_pid] on dbname=$DB1"

echo "**** creating a replication set containing the 4 pgbench tables ... "
slonik <<_EOF_
	cluster name = T1;
	node 1 admin conninfo = 'dbname=$DB1';
	node 2 admin conninfo = 'dbname=$DB2';

	try {
		table add key (node id = 1, fully qualified name = 'public.history');
	}
	on error {
		exit 1;
	}

	try {
		create set (id = 1, origin = 1, comment = 'Set 1 - pgbench tables');
		set add table (set id = 1, origin = 1,
			id = 1, fully qualified name = 'public.accounts',
			comment = 'Table accounts');
		set add table (set id = 1, origin = 1,
			id = 2, fully qualified name = 'public.branches',
			comment = 'Table branches');
		set add table (set id = 1, origin = 1,
			id = 3, fully qualified name = 'public.tellers',
			comment = 'Table tellers');
		set add table (set id = 1, origin = 1,
			id = 4, fully qualified name = 'public.history',
			key = serial, comment = 'Table accounts');
		set add table (set id = 1, origin = 1,
			id = 5, fully qualified name = 'public.accounts_audit',
			comment = 'Table accounts_audit');
		set add table (set id = 1, origin = 1,
			id = 6, fully qualified name = 'public.tellers_sum',
			comment = 'Table tellers_sum');
		set add sequence (set id = 1, origin = 1,
			id = 7, fully qualified name = 'public.accounts_audit_au_seqno_seq');
	}
	on error {
		exit 1;
	}
_EOF_

if [ $? -ne 0 ] ; then
	echo "failed"
	kill $pgbench_pid 2>/dev/null
	kill $slon1_pid 2>/dev/null
	cat $TMPOUT
	rm $TMPOUT
	exit 1
fi
echo "**** set created"

#####
# Check that pgbench is still running
#####
if ! kill -0 $pgbench_pid 2>/dev/null ; then
	echo "**** pgbench terminated ???"
	kill $slon1_pid 2>/dev/null
	exit 1
fi

echo ""
echo "**********************************************************************"
echo "**** $DB1 is now the Slony-I origin for set 1"
echo "**********************************************************************"
echo ""

######################################################################
# Setup DB2 as a subscriber node and let it subscribe the replication
# set of the running pgbench
######################################################################
echo "**** creating database for Node 2"
if ! createdb $DB2 ; then
	kill $pgbench_pid 2>/dev/null
	kill $slon1_pid 2>/dev/null
	exit 1
fi

echo "**** initializing $DB2 as Node 2 of Slony-I cluster T1"
slonik <<_EOF_
	cluster name = T1;
	node 1 admin conninfo = 'dbname=$DB1';
	node 2 admin conninfo = 'dbname=$DB2';
	try {
		store node (id = 2, comment = 'Node 2', event node=1);
		store path (server = 1, client = 2, conninfo = 'dbname=$DB1');
		store path (server = 2, client = 1, conninfo = 'dbname=$DB2');
		store listen (origin = 1, receiver = 2);
		store listen (origin = 2, receiver = 1);
	}
	on error { exit -1; }
	echo 'Database $DB2 added as Node 2';
_EOF_
if [ $? -ne 0 ] ; then
	kill $pgbench_pid 2>/dev/null
	kill $slon1_pid 2>/dev/null
	exit 1
fi

echo "**** starting the Slony-I node daemon for $DB1"
$TERMPROG -title "Slon node 2" -e sh -c "slon -d$DEBUG_LEVEL T1 dbname=$DB2; echo -n 'Enter>'; read line" &
slon2_pid=$!
echo "slon[$slon2_pid] on dbname=$DB2"

#####
# Check that pgbench is still running
#####
if ! kill -0 $pgbench_pid 2>/dev/null ; then
	echo "**** pgbench terminated ???"
	kill $slon1_pid 2>/dev/null
	exit 1
fi

######################################################################
# And now comes the moment where the big elephant starts to pee
# and the attendants in the first row climb on their chairs ...
######################################################################
echo "**** creating pgbench tables and subscribing Node 2 to set 1"
(
	cat pgbench_schema.sql
) | psql -q $DB2
slonik <<_EOF_
	cluster name = T1;
	node 1 admin conninfo = 'dbname=$DB1';
	node 2 admin conninfo = 'dbname=$DB2';

	subscribe set ( id = 1, provider = 1, receiver = 2, forward = yes );
_EOF_

echo ""
echo "**********************************************************************"
echo "**** $DB2 should now be copying data and attempting to catch up."
echo "**********************************************************************"
echo ""

echo -n "**** waiting for pgbench to finish "
while kill -0 $pgbench_pid 2>/dev/null ; do
	echo -n "."
	sleep 10
done
echo "**** pgbench finished"
echo "**** please terminate the replication engines when caught up."
wait $slon1_pid
wait $slon2_pid

kill $pgbench_pid 2>/dev/null
kill $slon1_pid 2>/dev/null
kill $slon2_pid 2>/dev/null

echo -n "**** comparing databases ... "
psql $DB1 -o dump.tmp.1.$$ <<_EOF_
	select 'accounts:'::text, aid, bid, abalance, filler
			from accounts order by aid;
	select 'accounts_audit:'::text, au_aid, au_seqno, au_delta, au_user, au_time
			from accounts_audit order by au_aid, au_seqno;
	select 'branches:'::text, bid, bbalance, filler
			from branches order by bid;
	select 'tellers:'::text, tid, bid, tbalance, filler
			from tellers order by tid;
	select 'tellers_sum:'::text, su_tid, su_sum
			from tellers_sum order by su_tid;
	select 'history:'::text, tid, bid, aid, delta, mtime, filler,
			"_Slony-I_T1_rowID" from history order by "_Slony-I_T1_rowID";
_EOF_
psql $DB2 -o dump.tmp.2.$$ <<_EOF_
	select 'accounts:'::text, aid, bid, abalance, filler
			from accounts order by aid;
	select 'accounts_audit:'::text, au_aid, au_seqno, au_delta, au_user, au_time
			from accounts_audit order by au_aid, au_seqno;
	select 'branches:'::text, bid, bbalance, filler
			from branches order by bid;
	select 'tellers:'::text, tid, bid, tbalance, filler
			from tellers order by tid;
	select 'tellers_sum:'::text, su_tid, su_sum
			from tellers_sum order by su_tid;
	select 'history:'::text, tid, bid, aid, delta, mtime, filler,
			"_Slony-I_T1_rowID" from history order by "_Slony-I_T1_rowID";
_EOF_

if diff dump.tmp.1.$$ dump.tmp.2.$$ >test_3.diff ; then
	echo "success - databases are equal."
	rm dump.tmp.?.$$
	rm test_3.diff
else
	echo "FAILED - see test_3.diff for database differences"
fi