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# frozen_string_literal: true
class SwapMergeRequestUserMentionsNoteIdToBigint2 < Gitlab::Database::Migration[2.1]
include Gitlab::Database::MigrationHelpers::ConvertToBigint
disable_ddl_transaction!
TABLE_NAME = 'merge_request_user_mentions'
def up
return unless should_run?
return if columns_already_swapped?
swap
end
def down
return unless should_run?
return unless columns_already_swapped?
swap
add_concurrent_index TABLE_NAME, :note_id_convert_to_bigint, unique: true,
name: 'index_merge_request_user_mentions_note_id_convert_to_bigint',
where: 'note_id_convert_to_bigint IS NOT NULL'
add_concurrent_foreign_key TABLE_NAME, :notes, column: :note_id_convert_to_bigint,
name: 'fk_merge_request_user_mentions_note_id_convert_to_bigint',
on_delete: :cascade,
validate: false
end
def swap
# This will replace the existing index_merge_request_user_mentions_on_note_id
add_concurrent_index TABLE_NAME, :note_id_convert_to_bigint, unique: true,
name: 'index_merge_request_user_mentions_note_id_convert_to_bigint',
where: 'note_id_convert_to_bigint IS NOT NULL'
# This will replace the existing merge_request_user_mentions_on_mr_id_and_note_id_index
add_concurrent_index TABLE_NAME, [:merge_request_id, :note_id_convert_to_bigint], unique: true,
name: 'mr_user_mentions_on_mr_id_and_note_id_convert_to_bigint_index'
# This will replace the existing merge_request_user_mentions_on_mr_id_index
add_concurrent_index TABLE_NAME, :merge_request_id, unique: true,
name: 'merge_request_user_mentions_on_mr_id_index_convert_to_bigint',
where: 'note_id_convert_to_bigint IS NULL'
# This will replace the existing fk_rails_c440b9ea31
add_concurrent_foreign_key TABLE_NAME, :notes, column: :note_id_convert_to_bigint,
name: 'fk_merge_request_user_mentions_note_id_convert_to_bigint',
on_delete: :cascade
with_lock_retries(raise_on_exhaustion: true) do
execute "LOCK TABLE notes, #{TABLE_NAME} IN ACCESS EXCLUSIVE MODE"
execute "ALTER TABLE #{TABLE_NAME} RENAME COLUMN note_id TO note_id_tmp"
execute "ALTER TABLE #{TABLE_NAME} RENAME COLUMN note_id_convert_to_bigint TO note_id"
execute "ALTER TABLE #{TABLE_NAME} RENAME COLUMN note_id_tmp TO note_id_convert_to_bigint"
function_name = Gitlab::Database::UnidirectionalCopyTrigger
.on_table(TABLE_NAME, connection: connection)
.name(:note_id, :note_id_convert_to_bigint)
execute "ALTER FUNCTION #{quote_table_name(function_name)} RESET ALL"
execute 'DROP INDEX IF EXISTS index_merge_request_user_mentions_on_note_id'
rename_index TABLE_NAME, 'index_merge_request_user_mentions_note_id_convert_to_bigint',
'index_merge_request_user_mentions_on_note_id'
execute 'DROP INDEX IF EXISTS merge_request_user_mentions_on_mr_id_and_note_id_index'
rename_index TABLE_NAME, 'mr_user_mentions_on_mr_id_and_note_id_convert_to_bigint_index',
'merge_request_user_mentions_on_mr_id_and_note_id_index'
execute 'DROP INDEX IF EXISTS merge_request_user_mentions_on_mr_id_index'
rename_index TABLE_NAME, 'merge_request_user_mentions_on_mr_id_index_convert_to_bigint',
'merge_request_user_mentions_on_mr_id_index'
execute "ALTER TABLE #{TABLE_NAME} DROP CONSTRAINT IF EXISTS fk_rails_c440b9ea31"
rename_constraint(TABLE_NAME, 'fk_merge_request_user_mentions_note_id_convert_to_bigint', 'fk_rails_c440b9ea31')
end
end
def should_run?
com_or_dev_or_test_but_not_jh?
end
def columns_already_swapped?
table_columns = columns(TABLE_NAME)
note_id = table_columns.find { |c| c.name == 'note_id' }
note_id_convert_to_bigint = table_columns.find { |c| c.name == 'note_id_convert_to_bigint' }
note_id_convert_to_bigint.sql_type == 'integer' && note_id.sql_type == 'bigint'
end
end
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