#!/usr/bin/env bash

# Confirm that traverses of volatile databases work as expected

# This is a very simple example.  It writes a single record, updates it
# on another node and then confirms that the correct value is found when
# traversing.  It then repeats this after removing the LMASTER role from
# the node where the value is updated.

. "${TEST_SCRIPTS_DIR}/integration.bash"

set -e

ctdb_test_init

#
# Main test
#
TESTDB="traverse_db.tdb"

echo "create volatile test database $TESTDB"
try_command_on_node 0 $CTDB attach "$TESTDB"

echo "wipe test database $TESTDB"
try_command_on_node 0 $CTDB wipedb "$TESTDB"

echo "write foo=bar0 on node 0"
try_command_on_node 0 $CTDB writekey "$TESTDB" "foo" "bar0"

echo "write foo=bar1 on node 1"
try_command_on_node 1 $CTDB writekey "$TESTDB" "foo" "bar1"

echo

check_db_num_records ()
{
	local node="$1"
	local db="$2"
	local n="$3"

	echo "Checking on node ${node} to ensure ${db} has ${n} records..."
	try_command_on_node "$node" "${CTDB} catdb ${db}"

	num=$(sed -n -e 's|^Dumped \(.*\) records$|\1|p' "$outfile")
	if [ "$num" = "$n" ] ; then
		echo "OK: Number of records=${num}"
		echo
	else
		echo "BAD: There were ${num} (!= ${n}) records"
		cat "$outfile"
		exit 1
	fi
}

check_db_num_records 0 "$TESTDB" 1
check_db_num_records 1 "$TESTDB" 1

cat <<EOF

Again, this time with 10 records, rewriting 5 of them on the 2nd node

EOF

echo "wipe test database $TESTDB"
try_command_on_node 0 $CTDB wipedb "$TESTDB"

for i in $(seq 0 9) ; do
	k="foo${i}"
	v="bar${i}@0"
	echo "write ${k}=${v} on node 0"
	try_command_on_node 0 "${CTDB} writekey ${TESTDB} ${k} ${v}"
done

for i in $(seq 1 5) ; do
	k="foo${i}"
	v="bar${i}@1"
	echo "write ${k}=${v} on node 1"
	try_command_on_node 1 "${CTDB} writekey ${TESTDB} ${k} ${v}"
done

check_db_num_records 0 "$TESTDB" 10
check_db_num_records 1 "$TESTDB" 10

cat <<EOF

Again, this time with lmaster role off on node 1

EOF

echo "wipe test database $TESTDB"
try_command_on_node 0 $CTDB wipedb "$TESTDB"

echo "switching off lmaster role on node 1"
try_command_on_node 1 $CTDB setlmasterrole off

try_command_on_node -v 1 $CTDB getcapabilities

wait_until_node_has_status 1 notlmaster 10 0

echo "write foo=bar0 on node 0"
try_command_on_node 0 $CTDB writekey "$TESTDB" "foo" "bar0"

echo "write foo=bar1 on node 1"
try_command_on_node 1 $CTDB writekey "$TESTDB" "foo" "bar1"

echo

check_db_num_records 0 "$TESTDB" 1
check_db_num_records 1 "$TESTDB" 1

if grep -q "^data(4) = \"bar1\"\$" "$outfile" ; then
	echo "OK: Data from node 1 was returned"
else
	echo "BAD: Data from node 1 was not returned"
	exit 1
fi