Tests scenarios for db-migrator

Configuration for testing with minikube:

Clone policy-docker and navigate to policy-db-migrator folder

Download db.yaml to the folder

Create a db-migrator-test.sh file under /git/docker/policy-db-migrator/src/main/docker folder with the script provided at the end of this page

Considering minikube is installed, on a terminal do the following:

Running with minikube

# setup minikube
minikube config set driver docker

# attach the local docker environment to minikube
eval $(minikube docker-env)

# build a local image of db-migrator
mvn clean install

# image build can be skipped if changing the image on db.yaml to the nexus one
# - image: onap/policy-db-migrator to nexus3.onap.org:10001/onap/policy-db-migrator
#        imagePullPolicy: Never to IfNotPresent

# start minikube using the docker repo as environment folder
minikube start --mount --mount-string="/git/docker:/mnt"

# start kubernete pods with configuration defined on db.yaml
kubectl create -f db.yaml

## check if pods are on Running state
kubectl get pods

# if pods are under Running state, collect logs
kubectl logs <db-migrator image name>

# stop pods
kubectl delete -f db.yaml
minikube stop

Test scenarios:

- Fresh install Honolulu

DB migrator should configure the database on Honolulu scripts.

Schema shouldn't exist

Command: /opt/app/policy/bin/db-migrator -s policyadmin -o upgrade -t 0800

Expected result: schema is created and populated with tables and indexes.

- Fresh install Istanbul

DB migrator should configure the database on Istanbul scripts.

Command: /opt/app/policy/bin/db-migrator -s policyadmin -o upgrade

Expected result: schema is created and populated with tables and indexes.

- Downgrade Istanbul to Honolulu

DB migrator should change tables and indexes based on Istanbul downgrade scripts.

Command: /opt/app/policy/bin/db-migrator -s policyadmin -o downgrade -f 0900 -t 0800

Expected result: tables and indexes altered, but no data loss.

- Upgrade Honolulu to Istanbul

DB migrator should change tables and indexes based on Istanbul upgrade scripts.

Command: /opt/app/policy/bin/db-migrator -s policyadmin -o upgrade -f 0800 -t 0900

Expected result: tables and indexes altered, but no data loss.

- Upgrade Istanbul to Honolulu (fail scenario) (need to confirm if target is by number)

Command: /opt/app/policy/bin/db-migrator -s policyadmin -o upgrade -t 0800 -f 0900

DB migrator should fail when upgrading to a down version.

Expected result: no changes on database, script has error result.

- Downgrade Honolulu to Istanbul (fail scenario)

DB migrator should fail when downgrading to an upper version.

Command: /opt/app/policy/bin/db-migrator -s policyadmin -o downgrade -t 0900 -f 0800

Expected result: no changes on database, script has error result.

- Downgrade Honolulu

DB migrator should change tables and indexes based on Honolulu downgrade scripts.

Command: /opt/app/policy/bin/db-migrator -s policyadmin -o downgrade -t 0800

Expected result: tables and indexes are all dropped.

- Partial upgrade

Upgrade to Honolulu
Drop a table that is to be altered in Istanbul
Upgrade to Istanbul

Command: /opt/app/policy/bin/db-migrator -s policyadmin -o upgrade -t 0800; drop table pdpdstatistics; db-migrator -s policyadmin -o upgrade -f 0800 -t 0900

Expected result: script halts at the given table's upgrade script and updates the metadata table to indicate that it failed

Downgrade to Honolulu

Command: /opt/app/policy/bin/db-migrator -s policyadmin -o downgrade -f 0900 -t 0800

Expected result: script skips the missing table and completes successfully (though it doesn't re-create the table)

Upgrade to Istanbul

Command: /opt/app/policy/bin/db-migrator -s policyadmin -o upgrade -f 0800 -t 0900

Expected result: script halts at the given table's upgrade script and updates the metadata table to indicate that it failed

Manually recreate the table
Upgrade to Istanbul

Expected result: success

- Partial downgrade

Upgrade to Istanbul
Drop/Alter a table that is to be changed in Istanbul
Downgrade to Honolulu

Expected result: script halts at the given table's downgrade script and updates the metadata table to indicate that it failed

Upgrade to Istanbul

Expected result: script skips the missing table and completes successfully (though it doesn't re-create the table)

Downgrade to Honolulu

Expected result: script halts at the given table's upgrade script and updates the metadata table to indicate that it failed

Manually recreate the table
Downgrade to Honolulu

Expected result: success

- Metadata database fails (No new functionality being tested)

When DB migrator starts, a metadata for historical changes is created/updated.

If metadata schema verification fails, script should return error.

Expected result: no changes on database, script has error result.

- Database information check fails (No new functionality being tested)

Username and password for accessing/creating schemas are invalid.

Expected result: no changes on database, script has error result.

- Database cannot connect

Server is unavailable.

Expected result: no changes on database, script has error result.

- Current schema already exists

If operation is valid, scripts should run with no issues.

Expected result: schema is populated with tables and indexes or tables and indexes are altered.

db-migrator-tests.sh

#!/bin/sh
# ============LICENSE_START====================================================
#  Copyright (C) 2021 Nordix Foundation.
# =============================================================================
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file 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.
#
# SPDX-License-Identifier: Apache-2.0
# ============LICENSE_END======================================================

export POLICY_HOME=/opt/app/policy
export SQL_USER=policy_user
export SQL_PASSWORD=policy_user
export SQL_HOST=mariadb
export MYSQL_ROOT_PASSWORD=secret
export SCHEMA=policyadmin
# Test variables
TEST_TS=$(date +%F-%T)
TOTAL_COUNT=0
HONOLULU_UPGRADE_COUNT=$(ls /home/policy/sql/0800/upgrade/*.sql | wc -l)
HONOLULU_DOWNGRADE_COUNT=$(ls /home/policy/sql/0800/downgrade/*.sql | wc -l)
ISTANBUL_UPGRADE_COUNT=$(ls /home/policy/sql/0900/upgrade/*.sql | wc -l)
ISTANBUL_DOWNGRADE_COUNT=$(ls /home/policy/sql/0900/downgrade/*.sql | wc -l)
NEW_RECORDS=0
START_VERSION=""
START_RECORDS=0
END_VERSION=""
END_RECORDS=0
END_STATUS=0
TEST_STATUS="FAIL"
TEST_MSG=""
TESTS=0
PASSED=0
FAILED=0
# SQL statements
PDPSTATISTICS="CREATE TABLE IF NOT EXISTS pdpstatistics ("
PDPSTATISTICS=${PDPSTATISTICS}"PDPGROUPNAME VARCHAR(120) NULL, "
PDPSTATISTICS=${PDPSTATISTICS}"PDPSUBGROUPNAME VARCHAR(120) NULL, "
PDPSTATISTICS=${PDPSTATISTICS}"POLICYDEPLOYCOUNT BIGINT DEFAULT NULL NULL, "
PDPSTATISTICS=${PDPSTATISTICS}"POLICYDEPLOYFAILCOUNT BIGINT DEFAULT NULL NULL, "
PDPSTATISTICS=${PDPSTATISTICS}"POLICYDEPLOYSUCCESSCOUNT BIGINT DEFAULT NULL NULL, "
PDPSTATISTICS=${PDPSTATISTICS}"POLICYEXECUTEDCOUNT BIGINT DEFAULT NULL NULL, "
PDPSTATISTICS=${PDPSTATISTICS}"POLICYEXECUTEDFAILCOUNT BIGINT DEFAULT NULL NULL, "
PDPSTATISTICS=${PDPSTATISTICS}"POLICYEXECUTEDSUCCESSCOUNT BIGINT DEFAULT NULL NULL, "
PDPSTATISTICS2=${PDPSTATISTICS}"POLICYUNDEPLOYCOUNT BIGINT DEFAULT NULL NULL, "
PDPSTATISTICS2=${PDPSTATISTICS2}"POLICYUNDEPLOYFAILCOUNT BIGINT DEFAULT NULL NULL, "
PDPSTATISTICS2=${PDPSTATISTICS2}"POLICYUNDEPLOYSUCCESSCOUNT BIGINT DEFAULT NULL NULL, "
PDPSTATISTICS=${PDPSTATISTICS}"timeStamp datetime NOT NULL, "
PDPSTATISTICS2=${PDPSTATISTICS2}"timeStamp datetime DEFAULT NULL NULL, "
PDPSTATISTICS2=${PDPSTATISTICS2}"ID BIGINT NOT NULL, "
PDPSTATISTICS=${PDPSTATISTICS}"name VARCHAR(120) NOT NULL, "
PDPSTATISTICS2=${PDPSTATISTICS2}"name VARCHAR(120) NOT NULL, "
PDPSTATISTICS=${PDPSTATISTICS}"version VARCHAR(20) NOT NULL," 
PDPSTATISTICS2=${PDPSTATISTICS2}"version VARCHAR(20) NOT NULL," 
PDPSTATISTICS=${PDPSTATISTICS}"CONSTRAINT PK_PDPSTATISTICS PRIMARY KEY (timeStamp, name, version));"
PDPSTATISTICS2=${PDPSTATISTICS2}"CONSTRAINT PK_PDPSTATISTICS PRIMARY KEY (ID, name, version));"

IDX_TSIDX1="CREATE INDEX IDX_TSIDX1 ON pdpstatistics(timeStamp, name, version);"
INSERT="INSERT INTO pdpstatistics(PDPGROUPNAME,PDPSUBGROUPNAME,POLICYDEPLOYCOUNT,POLICYDEPLOYFAILCOUNT,POLICYDEPLOYSUCCESSCOUNT,"
INSERT1="${INSERT}""POLICYEXECUTEDCOUNT,POLICYEXECUTEDFAILCOUNT,POLICYEXECUTEDSUCCESSCOUNT,timeStamp,name,version)"
INSERT2="${INSERT}""POLICYEXECUTEDCOUNT,POLICYEXECUTEDFAILCOUNT,POLICYEXECUTEDSUCCESSCOUNT,POLICYUNDEPLOYCOUNT,"
INSERT2="${INSERT2}""POLICYUNDEPLOYFAILCOUNT,POLICYUNDEPLOYSUCCESSCOUNT,timeStamp,ID,name,version)"
SQL1="${INSERT1}"" values('groupname', 'subgroup',1,1,1,1,1,1,now(),'test1', '1.0')"
SQL2="${INSERT1}"" values('groupname', 'subgroup',1,1,1,1,1,1,now(),'test1', '1.0')"
SQL3="${INSERT2}"" values('groupname', 'subgroup',1,1,1,1,1,1,1,1,1,now(),3,'test1', '1.0')"
SQL4="${INSERT2}"" values('groupname', 'subgroup',1,1,1,1,1,1,1,1,1,now(),4,'test1', '1.0')"
SQL5="${INSERT1}"" values('groupname', 'subgroup',1,1,1,1,1,1,now(),'test2', '1.0')"
SQL6="${INSERT1}"" values('groupname', 'subgroup',1,1,1,1,1,1,now(),'test2', '1.0')"

function run_sql 
{
    local user="${1}" password="${2}" schema="${3}" sql="${4}"
    MYSQL="mysql -u${user} -p${password} -h ${SQL_HOST} ${schema}"; 
    ${MYSQL} --execute "${sql}"
    return $?
}

function start_test
{
let TESTS=$TESTS+1
reportStatus=$(/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o report | tail -2)
START_VERSION=$(echo $reportStatus | cut -f13 -d' ')
START_RECORDS=$(echo $reportStatus | cut -f1 -d' ')

if [ "${START_VERSION}" == "" ]; then
	START_VERSION="0"
	START_RECORDS=0
fi
}	

function end_test
{
reportStatus=$(/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o report | tail -2)
END_VERSION=$(echo $reportStatus | cut -f13 -d' ')
END_RECORDS=$(echo $reportStatus | cut -f1 -d' ')
END_STATUS=$(echo $reportStatus | cut -f7 -d' ')
}	

function check_results
{
local status="${1}" operation="${2}" startVer="${3}" endVer="${4}" newRecords="${5}" filesRan="${6}"

echo ""
echo "check_results: status:$status, operation:$operation, from:$startVer, to:$endVer, new records:$newRecords, sqlFiles:$filesRan"
# Convert to number
startVer=$(echo $startVer  | awk '{$0=int($0)}1')
endVer=$(echo $endVer  | awk '{$0=int($0)}1')

if [ ${startVer} -eq ${endVer} ] && [ $newRecords -eq $filesRan ] && [ $newRecords -eq 0 ]; then
	TEST_MSG="No ${operation} required"
        TEST_STATUS="PASS"
        let PASSED=$PASSED+1
elif [ $status -eq 1 ] && [ "${operation}" == "upgrade" ] && [ ${startVer} -le ${endVer} ] && [ $newRecords -eq $filesRan ]; then
	TEST_MSG="Successful ${operation}"
        TEST_STATUS="PASS"
        let PASSED=$PASSED+1
elif [ $status -eq 1 ] && [ "${operation}" == "downgrade" ] && [ ${startVer} -ge ${endVer} ] && [ $newRecords -eq $filesRan ]; then
	TEST_MSG="Successful ${operation}"
        TEST_STATUS="PASS"
        let PASSED=$PASSED+1
else
	TEST_MSG="Errors occurred during ${operation}"
	TEST_STATUS="FAIL"
	let FAILED=$FAILED+1
fi
echo "*** Test $TESTS: $TEST_STATUS , $TEST_MSG, current version: $END_VERSION ***"
}

# Test 1 - Full upgrade
start_test
/opt/app/policy/bin/prepare_upgrade.sh ${SQL_DB}
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o upgrade
end_test
let TOTAL_COUNT=$HONOLULU_UPGRADE_COUNT+$ISTANBUL_UPGRADE_COUNT
check_results $END_STATUS 'upgrade' "${START_VERSION}" "${END_VERSION}" "${END_RECORDS}" $TOTAL_COUNT 

sleep 5

# Test 2 - downgrade to 0800
start_test
/opt/app/policy/bin/prepare_downgrade.sh ${SQL_DB}
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o downgrade -f 0900 -t 0800 
end_test
let NEW_RECORDS=$END_RECORDS-$START_RECORDS 
check_results $END_STATUS 'downgrade' "${START_VERSION}" "${END_VERSION}" "${NEW_RECORDS}" $ISTANBUL_DOWNGRADE_COUNT 

sleep 5

# Test 3 - upgrade to 0900
start_test
/opt/app/policy/bin/prepare_upgrade.sh ${SQL_DB}
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o upgrade -f 0800 -t 0900 
end_test
let NEW_RECORDS=$END_RECORDS-$START_RECORDS 
check_results $END_STATUS 'upgrade' "${START_VERSION}" "${END_VERSION}" "${NEW_RECORDS}" $ISTANBUL_UPGRADE_COUNT 

sleep 5

# Test4 - run upgrade on db where tables already exist and migration schema is empty 
start_test
/opt/app/policy/bin/prepare_downgrade.sh ${SQL_DB}
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o downgrade -f 0900 -t 0800 
run_sql "root" "${MYSQL_ROOT_PASSWORD}" "${SCHEMA}" "DROP DATABASE IF EXISTS migration;"
/opt/app/policy/bin/prepare_upgrade.sh ${SQL_DB}
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o upgrade 
end_test
let NEW_RECORDS=$END_RECORDS
check_results $END_STATUS 'upgrade' "0800" "${END_VERSION}" "${NEW_RECORDS}" $ISTANBUL_UPGRADE_COUNT 

sleep 5

# Test5  - upgrade after failed downgrade
start_test
/opt/app/policy/bin/prepare_downgrade.sh ${SQL_DB}
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "DROP table pdpstatistics;"
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o downgrade -f 0900 -t 0800 
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${PDPSTATISTICS2}"
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${IDX_TSIDX1}"
/opt/app/policy/bin/prepare_upgrade.sh ${SQL_DB}
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o upgrade -f 0900 -t 0900 
end_test
let NEW_RECORDS=$END_RECORDS-$START_RECORDS
# (files run before error * 2) + 1 to run the file again
let TOTAL_COUNT=9
check_results $END_STATUS 'upgrade' "${START_VERSION}" "${END_VERSION}" "${NEW_RECORDS}" $TOTAL_COUNT 

sleep 5

# Test6 - Dwongrade after failed downgrade 
start_test
/opt/app/policy/bin/prepare_downgrade.sh ${SQL_DB}
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "DROP table pdpstatistics;"
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o downgrade -f 0900 -t 0800 
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${PDPSTATISTICS2}"
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${IDX_TSIDX1}"
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o downgrade -f 0900 -t 0800 
end_test
let NEW_RECORDS=$END_RECORDS-$START_RECORDS
# +1 to run the file again
let TOTAL_COUNT=$ISTANBUL_DOWNGRADE_COUNT+1	
check_results $END_STATUS 'downgrade' "${START_VERSION}" "${END_VERSION}" "${NEW_RECORDS}" $TOTAL_COUNT 

sleep 5

# Test7  - downgrade after failed upgrade
start_test
/opt/app/policy/bin/prepare_upgrade.sh ${SQL_DB}
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "DROP table pdpstatistics;"
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o upgrade -f 0800 -t 0900 
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${PDPSTATISTICS}"
/opt/app/policy/bin/prepare_downgrade.sh ${SQL_DB}
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o downgrade -f 0900 -t 0800 
end_test
let NEW_RECORDS=$END_RECORDS-$START_RECORDS
# (files run before error * 2) + 1 to run the file again
let TOTAL_COUNT=7
check_results $END_STATUS 'downgrade' "${START_VERSION}" "${END_VERSION}" "${NEW_RECORDS}" $TOTAL_COUNT 

sleep 5

# Test 8 - Upgrade after failed upgrade 
start_test
/opt/app/policy/bin/prepare_upgrade.sh ${SQL_DB}
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "DROP table pdpstatistics;"
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o upgrade -f 0800 -t 0900 
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${PDPSTATISTICS}"
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o upgrade -f 0900 -t 0900 
end_test
let NEW_RECORDS=$END_RECORDS-$START_RECORDS
# +1 to run the file again
let TOTAL_COUNT=$ISTANBUL_UPGRADE_COUNT+1	
check_results $END_STATUS 'upgrade' "${START_VERSION}" "${END_VERSION}" "${NEW_RECORDS}" $TOTAL_COUNT 

sleep 5

# Test 9 - Upgrade when pdpstatistics contains data 
/opt/app/policy/bin/prepare_downgrade.sh ${SQL_DB}
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o downgrade -f 0900 -t 0800 
start_test
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${SQL1}"
sleep 1
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${SQL2}"
sleep 1
/opt/app/policy/bin/prepare_upgrade.sh ${SQL_DB}
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o upgrade -f 0800 -t 0900 
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${SQL3}"
sleep 1
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${SQL4}"
end_test
let NEW_RECORDS=$END_RECORDS-$START_RECORDS
# +1 to run the file again
let TOTAL_COUNT=$ISTANBUL_UPGRADE_COUNT
check_results $END_STATUS 'upgrade' "${START_VERSION}" "${END_VERSION}" "${NEW_RECORDS}" $TOTAL_COUNT 

sleep 5

# Test 10 - downgrade to 0800 with records in pdpstatistics
start_test
/opt/app/policy/bin/prepare_downgrade.sh ${SQL_DB}
/opt/app/policy/bin/db-migrator -s ${SQL_DB} -o downgrade -f 0900 -t 0800 
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${SQL5}"
sleep 1
run_sql "${SQL_USER}" "${SQL_PASSWORD}" "${SCHEMA}" "${SQL6}"
end_test
let NEW_RECORDS=$END_RECORDS-$START_RECORDS 
check_results $END_STATUS 'downgrade' "${START_VERSION}" "${END_VERSION}" "${NEW_RECORDS}" $ISTANBUL_DOWNGRADE_COUNT 

echo
echo "-----------------------------------------------------------------------"
echo "Number of Tests: $TESTS, Tests Passed: $PASSED, Tests Failed: $FAILED"
echo "Date: $TEST_TS"
echo "-----------------------------------------------------------------------"

nc -lk -p 6824

exit 0

Tests results: tests_results.txt

Testing jpapdpstatistics_enginestats

MariaDB [policyadmin]> select * from jpapdpstatistics_enginestats;
+----------------------+-------------+-----------------+-------------------+------------+---------------+-------------------+-----------+--------+---------------------+-------+---------+
| AVERAGEEXECUTIONTIME | ENGINEID | ENGINETIMESTAMP | ENGINEWORKERSTATE | EVENTCOUNT | LASTENTERTIME | LASTEXECUTIONTIME | LASTSTART | UPTIME | timeStamp | name | version |
+----------------------+-------------+-----------------+-------------------+------------+---------------+-------------------+-----------+--------+---------------------+-------+---------+
| 100 | Test-Engine | 20210825120846 | 2 | 5 | 0 | 0 | 9999 | 8888 | 2021-08-25 12:08:46 | test1 | 1.0 |
| 100 | Test-Engine | 20210825120847 | 2 | 5 | 0 | 0 | 9999 | 8888 | 2021-08-25 12:08:47 | test1 | 1.0 |
+----------------------+-------------+-----------------+-------------------+------------+---------------+-------------------+-----------+--------+---------------------+-------+---------+
2 rows in set (0.000 sec)

MariaDB [policyadmin]> select * from jpapdpstatistics_enginestats;
+----------------------+-------------+-----------------+-------------------+------------+---------------+-------------------+-----------+--------+------+-------+---------+
| AVERAGEEXECUTIONTIME | ENGINEID | ENGINETIMESTAMP | ENGINEWORKERSTATE | EVENTCOUNT | LASTENTERTIME | LASTEXECUTIONTIME | LASTSTART | UPTIME | ID | name | version |
+----------------------+-------------+-----------------+-------------------+------------+---------------+-------------------+-----------+--------+------+-------+---------+
| 100 | Test-Engine | 20210825120846 | 2 | 5 | 0 | 0 | 9999 | 8888 | 1 | test1 | 1.0 |
| 100 | Test-Engine | 20210825120847 | 2 | 5 | 0 | 0 | 9999 | 8888 | 2 | test1 | 1.0 |
+----------------------+-------------+-----------------+-------------------+------------+---------------+-------------------+-----------+--------+------+-------+---------+
2 rows in set (0.001 sec)

MariaDB [policyadmin]> select * from jpapdpstatistics_enginestats;
+----------------------+-------------+-----------------+-------------------+------------+---------------+-------------------+-----------+--------+---------------------+-------+---------+
| AVERAGEEXECUTIONTIME | ENGINEID | ENGINETIMESTAMP | ENGINEWORKERSTATE | EVENTCOUNT | LASTENTERTIME | LASTEXECUTIONTIME | LASTSTART | UPTIME | timeStamp | name | version |
+----------------------+-------------+-----------------+-------------------+------------+---------------+-------------------+-----------+--------+---------------------+-------+---------+
| 100 | Test-Engine | 20210825120846 | 2 | 5 | 0 | 0 | 9999 | 8888 | 2021-08-25 12:08:46 | test1 | 1.0 |
| 100 | Test-Engine | 20210825120847 | 2 | 5 | 0 | 0 | 9999 | 8888 | 2021-08-25 12:08:47 | test1 | 1.0 |
+----------------------+-------------+-----------------+-------------------+------------+---------------+-------------------+-----------+--------+---------------------+-------+---------+
2 rows in set (0.001 sec)

PK is converted from name,version,timeStamp to name,version,id and back again.

Testing db-migrator with updated persistence.xml

OOM Testing