8 Commits (4230d1ee0a0752e0259e96e1590f7eb9fb1ebb9b)

Author	SHA1	Message	Date
Nick Schonning	1d557305d2	Enable Rubocop Style/FrozenStringLiteralComment (#23793)	2 years ago
Matt Jankowski	b9e34ef098	Migration warning helper, and only run in production env (#24253)	3 years ago
Jeremy Kescher	5f79200a5e	Remove/update old "tootsuite" references, except those needed for Docker (#19327)	3 years ago
Eugen Rochko	4363d06986	Fix interactive delays in database migrations with no TTY (#12969) ... Fix #12587	6 years ago
Daigo 3 Dango	cd68714393	List columns within the method (#11377) ... To avoid the exception: NoMethodError: undefined method `perform' for nil:NilClass .../vendor/bundle/ruby/2.6.0/gems/strong_migrations-0.4.1/lib/strong_migrations/migration.rb:14:in `method_missing' .../vendor/bundle/ruby/2.6.0/gems/activerecord-5.2.3/lib/active_record/migration.rb:604:in `method_missing' .../db/migrate/20170918125918_ids_to_bigints.rb:69:in `<class:IdsToBigints>' .../db/migrate/20170918125918_ids_to_bigints.rb:3:in `<top (required)>'	6 years ago
aschmitz	97c02c3389	Make IdsToBigints (mostly!) non-blocking (#5088) ... * Make IdsToBigints (mostly!) non-blocking This pulls in GitLab's MigrationHelpers, which include code to make column changes in ways that Postgres can do without locking. In general, this involves creating a new column, adding an index and any foreign keys as appropriate, adding a trigger to keep it populated alongside the old column, and then progressively copying data over to the new column, before removing the old column and replacing it with the new one. A few changes to GitLab's MigrationHelpers were necessary: * Some changes were made to remove dependencies on other GitLab code. * We explicitly wait for index creation before forging ahead on column replacements. * We use different temporary column names, to avoid running into index name length limits. * We rename the generated indices back to what they "should" be after replacing columns. * We rename the generated foreign keys to use the new column names when we had to create them. (This allows the migration to be rolled back without incident.) # Big Scary Warning There are two things here that may trip up large instances: 1. The change for tables' "id" columns is not concurrent. In particular, the stream_entries table may be big, and does not concurrently migrate its id column. (On the other hand, x_id type columns are all concurrent.) 2. This migration will take a long time to run, *but it should not lock tables during that time* (with the exception of the "id" columns as described above). That means this should probably be run in `screen` or some other session that can be run for a long time. Notably, the migration will take *longer* than it would without these changes, but the website will still be responsive during that time. These changes were tested on a relatively large statuses table (256k entries), and the service remained responsive during the migration. Migrations both forward and backward were tested. * Rubocop fixes * MigrationHelpers: Support ID columns in some cases This doesn't work in cases where the ID column is referred to as a foreign key by another table. * MigrationHelpers: support foreign keys for ID cols Note that this does not yet support foreign keys on non-primary-key columns, but Mastodon also doesn't yet have any that we've needed to migrate. This means we can perform fully "concurrent" migrations to change ID column types, and the IdsToBigints migration can happen with effectively no downtime. (A few operations require a transaction, such as renaming columns or deleting them, but these transactions should not block for noticeable amounts of time.) The algorithm for generating foreign key names has changed with this, and therefore all of those changed in schema.rb. * Provide status, allow for interruptions The MigrationHelpers now allow restarting the rename of a column if it was interrupted, by removing the old "new column" and re-starting the process. Along with this, they now provide status updates on the changes which are happening, as well as indications about when the changes can be safely interrupted (when there are at least 10 seconds estimated to be left before copying data is complete). The IdsToBigints migration now also sorts the columns it migrates by size, starting with the largest tables. This should provide administrators a worst-case scenario estimate for the length of migrations: each successive change will get faster, giving admins a chance to abort early on if they need to run the migration later. The idea is that this does not force them to try to time interruptions between smaller migrations. * Fix column sorting in IdsToBigints Not a significant change, but it impacts the order of columns in the database and db/schema.rb. * Actually pause before IdsToBigints	8 years ago
nullkal	dcfc9b2204	Fix the migration error when deprecated_preview_cards has been deleted (#5043) ... * Fix the migration error when deprecated_preview_cards has deleted * Re-run Travis CI	8 years ago
aschmitz	dd4ef69839	Hardcode IdToBigints migration columns (#5039) ... This addresses a comment during review: https://github.com/tootsuite/mastodon/pull/4801#discussion_r139337452 This means we'll need to make sure that all _id columns going forward are bigints, but that should happen automatically in most cases.	8 years ago