PGmigrate

PostgreSQL migrations made easy

Overview

PGmigrate is a database migration tool developed by Yandex.

PGmigrate has the following key-features:

• Transactional and nontransactional migrations: you can enjoy whole power of PostgreSQL DDL
• Callbacks: you can run some DDL on specific steps of migration process (e.g. drop some code before executing migrations, and create it back after migrations were applied)
• Online migrations: you can execute series of transactional migrations and callbacks in a single transaction (so, if something goes wrong simple ROLLBACK will bring you in consistent state)

Install

pip install yandex-pgmigrate

Running tests

Tests require running PostgreSQL instance with superuser (to create/drop dbs). You could setup this yourself and use tox to start tests:

tox

Second option is to use docker and make:

make test

How to use

Complete manual is here.

Release history

• 1.0.5 (2020-02-29)
  • Use application_name instead of backend pid for conflict termination
• 1.0.4 (2019-04-14)
  • Allow using subdirs in migrations folder
• 1.0.3 (2017-12-28)
  • Fix migration error with comment at the end of file
  • Add blocking pids termination
  • Some minor fixes and improvements
• 1.0.2 (2017-04-05)
  • Speed up get_info function a bit
  • Fix callbacks in transactional/nontransactional migrations mix on db init
• 1.0.1 (2017-04-01)
  • Fix bug with python format patterns in migration text
  • Sort info command output by version
  • Support 'latest' target version
  • Add option to override user in migration meta
  • Fix info command fail without target on initialized database
  • Add session setup option
• 1.0.0 (2016-10-03)
  • First opensource version

License

Distributed under the PostgreSQL license. See LICENSE for more information.