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nus/cs3223/cs3223_assign1/test-yaclock.sh
2025-09-27 17:30:36 +08:00

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#!/usr/bin/env bash
# Script for testing YACLOCK policy
# IMPORTANT: You must edit the value of PGPORT variable in settings.sh before running this script
set -euo pipefail
source ./settings.sh
policy=yaclock
# create PGDATA directory if it's missing
if [ ! -e ${PGDATA} ]; then
if [ ! -d ${INSTALL_DIR}/bin ]; then
echo "ERROR: PostgreSQL installation missing!"
exit 1
fi
${INSTALL_DIR}/bin/initdb -D ${PGDATA}
fi
if pg_ctl status > /dev/null; then
pg_ctl stop
fi
# start postgres with 16 buffer pages
pg_ctl start -l ${LOG_FILE} -o "-p ${PGPORT} -B 16"
# check that server is running
if ! pg_ctl status -D ${PGDATA} > /dev/null; then
echo "ERROR: postgres server is not running!"
exit 1;
fi
# if database exists, drop database
if psql -l | grep -q "${DBNAME}"; then
echo "Dropping database ${DBNAME} ..."
dropdb "${DBNAME}"
fi
echo "Creating database ${DBNAME} ..."
createdb "${DBNAME}"
# check that number of shared buffer pages is configured to 16 pages
if ! psql -c "SHOW shared_buffers;" ${DBNAME} | grep -q "128kB" ; then
echo "ERROR: restart server with 16 buffer pages!"
exit 1;
fi
# load data into movies relation
psql -f load-data.sql ${DBNAME}
# create test_bufmgr extension if necessary
psql -c "CREATE EXTENSION IF NOT EXISTS test_bufmgr;" ${DBNAME}
# run tests
TEST_DIR=${ASSIGN_DIR}/testresults-${policy}
if [ -d ${TEST_DIR} ]; then
\rm -f ${TEST_DIR}/*.txt
else
mkdir -p ${TEST_DIR}
fi
for testno in {0..9}
do
resultfile="${TEST_DIR}/result-$testno.txt"
echo "Running test case ${testno} -> ${resultfile} ..."
psql -c "SELECT test_bufmgr('movies', $testno);" ${DBNAME} 2> ${resultfile}
done