26 lines
1.5 KiB
Python
26 lines
1.5 KiB
Python
"""One-shot schema/role setup. Only this job receives database admin credentials."""
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import os
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from pathlib import Path
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import psycopg
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from psycopg import sql
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def main():
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role = os.environ['APP_DB_USER']
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with psycopg.connect(os.environ['DATABASE_ADMIN_URL']) as c:
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admin, database = c.execute('SELECT current_user,current_database()').fetchone()
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if role == admin:
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raise RuntimeError('Application and database administrator must differ')
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if not c.execute('SELECT 1 FROM pg_roles WHERE rolname=%s', (role,)).fetchone():
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c.execute(sql.SQL('CREATE ROLE {} LOGIN').format(sql.Identifier(role)))
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c.execute(sql.SQL('ALTER ROLE {} NOSUPERUSER NOCREATEDB NOCREATEROLE NOREPLICATION NOBYPASSRLS PASSWORD {}').format(
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sql.Identifier(role), sql.Literal(os.environ['APP_DB_PASSWORD'])))
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c.execute(Path(__file__).with_name('schema.sql').read_text())
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c.execute(sql.SQL('REVOKE CREATE ON SCHEMA public FROM PUBLIC'))
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c.execute(sql.SQL('GRANT CONNECT ON DATABASE {} TO {}').format(sql.Identifier(database),sql.Identifier(role)))
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c.execute(sql.SQL('GRANT USAGE ON SCHEMA dtf_local TO {}').format(sql.Identifier(role)))
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c.execute(sql.SQL('GRANT SELECT,INSERT,UPDATE,DELETE ON ALL TABLES IN SCHEMA dtf_local TO {}').format(sql.Identifier(role)))
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c.execute(sql.SQL('GRANT USAGE,SELECT ON ALL SEQUENCES IN SCHEMA dtf_local TO {}').format(sql.Identifier(role)))
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print('Local schema migrated; runtime role has DML only.')
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if __name__ == '__main__': main()
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