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Migration warning helper, and only run in production env (#24253)

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Matt Jankowski 2023-03-25 19:39:24 -04:00 • committed by GitHub
parent e633b26f4f
commit b9e34ef098
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4 changed files with 77 additions and 47 deletions
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25
db/migrate/20180528141303_fix_accounts_unique_index.rb
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@ -1,4 +1,8 @@
require_relative '../../lib/mastodon/migration_warning'
class FixAccountsUniqueIndex < ActiveRecord::Migration[5.2]
include Mastodon::MigrationWarning
class Account < ApplicationRecord
# Dummy class, to make migration possible across version changes
has_one :user, inverse_of: :account
@ -35,22 +39,11 @@ class FixAccountsUniqueIndex < ActiveRecord::Migration[5.2]
disable_ddl_transaction!
def up
if $stdout.isatty
say ''
say 'WARNING: This migration may take a *long* time for large instances'
say 'It will *not* lock tables for any significant time, but it may run'
say 'for a very long time. We will pause for 10 seconds to allow you to'
say 'interrupt this migration if you are not ready.'
say ''
say 'This migration will irreversibly delete user accounts with duplicate'
say 'usernames. You may use the `rake mastodon:maintenance:find_duplicate_usernames`'
say 'task to manually deal with such accounts before running this migration.'
10.downto(1) do |i|
say "Continuing in #{i} second#{i == 1 ? '' : 's'}...", true
sleep 1
end
end
migration_duration_warning(<<~EXPLANATION)
This migration will irreversibly delete user accounts with duplicate
usernames. You may use the `rake mastodon:maintenance:find_duplicate_usernames`
task to manually deal with such accounts before running this migration.
EXPLANATION
duplicates = Account.connection.select_all('SELECT string_agg(id::text, \',\') AS ids FROM accounts GROUP BY lower(username), lower(domain) HAVING count(*) > 1').to_ary