forked from treehouse/mastodon
36 lines
1.6 KiB
Ruby
36 lines
1.6 KiB
Ruby
class AddFixedLowercaseIndexToAccounts < ActiveRecord::Migration[5.2]
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disable_ddl_transaction!
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class CorruptionError < StandardError
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def cause
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nil
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end
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def backtrace
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[]
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end
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end
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def up
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if index_name_exists?(:accounts, 'old_index_accounts_on_username_and_domain_lower') && index_name_exists?(:accounts, 'index_accounts_on_username_and_domain_lower')
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remove_index :accounts, name: 'index_accounts_on_username_and_domain_lower'
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elsif index_name_exists?(:accounts, 'index_accounts_on_username_and_domain_lower')
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rename_index :accounts, 'index_accounts_on_username_and_domain_lower', 'old_index_accounts_on_username_and_domain_lower'
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end
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begin
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add_index :accounts, "lower (username), COALESCE(lower(domain), '')", name: 'index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently
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rescue ActiveRecord::RecordNotUnique
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raise CorruptionError, 'Migration failed because of index corruption, see https://docs.joinmastodon.org/admin/troubleshooting/index-corruption/#fixing'
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end
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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')
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end
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def down
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add_index :accounts, 'lower (username), lower(domain)', name: 'old_index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently
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remove_index :accounts, name: 'index_accounts_on_username_and_domain_lower'
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rename_index :accounts, 'old_index_accounts_on_username_and_domain_lower', 'index_accounts_on_username_and_domain_lower'
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end
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end
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