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# frozen_string_literal: true
class SwapColumnsForCiPipelineMessagesPipelineIdBigint < Gitlab::Database::Migration[2.1]
disable_ddl_transaction!
TABLE_NAME = :ci_pipeline_messages
TARGET_TABLE_NAME = :ci_pipelines
TRIGGER_FUNCTION_NAME = :trigger_bfad0e2b9c86
COLUMN_NAME = :pipeline_id
BIGINT_COLUMN_NAME = :pipeline_id_convert_to_bigint
FK_NAME = :fk_rails_8d3b04e3e1
BIGINT_FK_NAME = :fk_0946fea681
INDEX_NAME = :index_ci_pipeline_messages_on_pipeline_id
BIGINT_INDEX_NAME = :index_ci_pipeline_messages_on_pipeline_id_convert_to_bigint
def up
swap
end
def down
swap
end
private
def swap
with_lock_retries(raise_on_exhaustion: true) do
# Lock the tables involved.
execute "LOCK TABLE #{TARGET_TABLE_NAME}, #{TABLE_NAME} IN ACCESS EXCLUSIVE MODE"
# Rename the columns to swap names
temp_name = "temp_#{COLUMN_NAME}"
execute "ALTER TABLE #{TABLE_NAME} RENAME COLUMN #{COLUMN_NAME} TO #{temp_name}"
execute "ALTER TABLE #{TABLE_NAME} RENAME COLUMN #{BIGINT_COLUMN_NAME} TO #{COLUMN_NAME}"
execute "ALTER TABLE #{TABLE_NAME} RENAME COLUMN #{temp_name} TO #{BIGINT_COLUMN_NAME}"
# Reset the trigger function
execute "ALTER FUNCTION #{quote_column_name(TRIGGER_FUNCTION_NAME)} RESET ALL"
# Swap the defaults
change_column_default TABLE_NAME, COLUMN_NAME, nil
change_column_default TABLE_NAME, BIGINT_COLUMN_NAME, 0
# Swap fkey constraint
temp_fk_name = "temp_#{FK_NAME}"
execute "ALTER TABLE #{TABLE_NAME} RENAME CONSTRAINT #{FK_NAME} TO #{temp_fk_name}"
execute "ALTER TABLE #{TABLE_NAME} RENAME CONSTRAINT #{BIGINT_FK_NAME} TO #{FK_NAME}"
execute "ALTER TABLE #{TABLE_NAME} RENAME CONSTRAINT #{temp_fk_name} TO #{BIGINT_FK_NAME}"
# Swap index
temp_index_name = "temp_#{INDEX_NAME}"
execute "ALTER INDEX #{INDEX_NAME} RENAME TO #{temp_index_name}"
execute "ALTER INDEX #{BIGINT_INDEX_NAME} RENAME TO #{INDEX_NAME}"
execute "ALTER INDEX #{temp_index_name} RENAME TO #{BIGINT_INDEX_NAME}"
end
end
end
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