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Add generate schemas tool

This tool was used while building the compact-db-migrations-wallaby
series during Wallaby [1]. It might be helpful in the future, so commit
it now.

Change-Id: Idd556fac96ce621ad095862597c4f11851852fed
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
changes/96/769796/2
Stephen Finucane 5 months ago
parent
commit
74f5eb2ce9
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#!/usr/bin/env bash
#
# Script to generate schemas for the various versions.
#
# Some setup is required, similar to the opportunistic tests.
#
# MySQL ->
#
# $ mysql -uroot
# MariaDB [(none)]> CREATE DATABASE nova
# MariaDB [(none)]> GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' IDENTIFIED BY 'password';
# MariaDB [(none)]> quit;
#
# Postgres ->
#
# $ sudo -u postgres psql
# postgres=# create user nova with createdb login password 'password';
# postgres=# create database nova with owner nova;
# postgres=# quit;
#
# Note that you may also have to configure 'pg_hba.conf' to use password-based
# auth instead of "ident", if you haven't done so already. You can locate this
# with 'locate pg_hba.conf'. More details at
# https://ubuntu.com/server/docs/databases-postgresql
set -o xtrace
set -e
source .tox/py36/bin/activate
pushd nova/db/sqlalchemy/migrate_repo
INIT_VERSION=$(ls -1 versions/ | head -1 | awk -F_ '{print $1}')
INIT_VERSION=$(($INIT_VERSION-1))
echo "Detected init version of $INIT_VERSION"
mkdir -p schemas
rm -f "schemas/$INIT_VERSION-*.sql"
#
# sqlite
#
# cleanup from previous runs
rm -f nova.db
# sync schema
python manage.py version_control \
--database 'sqlite:///nova.db' \
--version $INIT_VERSION
python manage.py upgrade \
--database 'sqlite:///nova.db'
# dump the schema
sqlite3 nova.db << EOF
.output "schemas/${INIT_VERSION}-sqlite.sql"
.schema
.quit
EOF
rm -f nova.db
#
# mysql
#
# cleanup from previous runs
mysql -u nova -ppassword << EOF
DROP DATABASE IF EXISTS nova;
CREATE DATABASE nova;
EOF
# sync schema
python manage.py version_control \
--database 'mysql+pymysql://nova:password@localhost/nova' \
--version "$INIT_VERSION"
python manage.py upgrade \
--database 'mysql+pymysql://nova:password@localhost/nova'
# dump the schema
mysqldump --no-data --skip-comments -u nova -ppassword \
nova > "schemas/${INIT_VERSION}-mysql.sql"
mysql -u nova -ppassword << EOF
DROP DATABASE IF EXISTS nova;
EOF
#
# postgres
#
# cleanup from previous runs
sudo -u postgres dropdb --if-exists nova
sudo -u postgres createdb --owner=nova nova
# sync to initial version
python manage.py version_control \
--database 'postgresql://nova:password@localhost/nova' \
--version "$INIT_VERSION"
python manage.py upgrade \
--database 'postgresql://nova:password@localhost/nova'
# dump the schema
pg_dump postgresql://nova:password@localhost/nova \
--schema-only > "schemas/${INIT_VERSION}-postgres.sql"
sudo -u postgres dropdb --if-exists nova
popd
deactivate

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