diff options
| -rw-r--r-- | db/migrate/20200620164023_add_fixed_lowercase_index_to_accounts.rb | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/db/migrate/20200620164023_add_fixed_lowercase_index_to_accounts.rb b/db/migrate/20200620164023_add_fixed_lowercase_index_to_accounts.rb index c5688681f..c3aa8e33c 100644 --- a/db/migrate/20200620164023_add_fixed_lowercase_index_to_accounts.rb +++ b/db/migrate/20200620164023_add_fixed_lowercase_index_to_accounts.rb @@ -1,10 +1,30 @@ class AddFixedLowercaseIndexToAccounts < ActiveRecord::Migration[5.2] disable_ddl_transaction! + class CorruptionError < StandardError + def cause + nil + end + + def backtrace + [] + end + end + def up - rename_index :accounts, 'index_accounts_on_username_and_domain_lower', 'old_index_accounts_on_username_and_domain_lower' unless index_name_exists?(:accounts, 'old_index_accounts_on_username_and_domain_lower') - add_index :accounts, "lower (username), COALESCE(lower(domain), '')", name: 'index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently - remove_index :accounts, name: 'old_index_accounts_on_username_and_domain_lower' + if index_name_exists?(:accounts, 'old_index_accounts_on_username_and_domain_lower') && index_name_exists?(:accounts, 'index_accounts_on_username_and_domain_lower') + remove_index :accounts, name: 'index_accounts_on_username_and_domain_lower' + elsif index_name_exists?(:accounts, 'index_accounts_on_username_and_domain_lower') + rename_index :accounts, 'index_accounts_on_username_and_domain_lower', 'old_index_accounts_on_username_and_domain_lower' + end + + begin + add_index :accounts, "lower (username), COALESCE(lower(domain), '')", name: 'index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently + rescue ActiveRecord::RecordNotUnique + raise CorruptionError, 'Migration failed because of index corruption, see https://docs.joinmastodon.org/admin/troubleshooting/index-corruption/#fixing' + end + + remove_index :accounts, name: 'old_index_accounts_on_username_and_domain_lower' if index_name_exists?(:accounts, 'old_index_accounts_on_username_and_domain_lower') end def down |