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# frozen_string_literal: true
class FinalizeCiSourcesPipelinesBigintConversion < ActiveRecord::Migration[6.1]
include Gitlab::Database::MigrationHelpers
disable_ddl_transaction!
TABLE_NAME = 'ci_sources_pipelines'
def up
ensure_batched_background_migration_is_finished(
job_class_name: 'CopyColumnUsingBackgroundMigrationJob',
table_name: TABLE_NAME,
column_name: 'id',
job_arguments: [['source_job_id'], ['source_job_id_convert_to_bigint']]
)
swap
end
def down
swap
end
private
def swap
# This is to replace the existing "index_ci_sources_pipelines_on_source_job_id" btree (source_job_id)
add_concurrent_index TABLE_NAME, :source_job_id_convert_to_bigint, name: 'index_ci_sources_pipelines_on_source_job_id_convert_to_bigint'
# Add a foreign key on `source_job_id_convert_to_bigint` before we swap the columns and drop the old FK (fk_be5624bf37)
add_concurrent_foreign_key TABLE_NAME, :ci_builds,
column: :source_job_id_convert_to_bigint, on_delete: :cascade,
name: 'fk_be5624bf37_tmp', reverse_lock_order: true
with_lock_retries(raise_on_exhaustion: true) do
# We'll need ACCESS EXCLUSIVE lock on the related tables,
# lets make sure it can be acquired from the start
execute "LOCK TABLE ci_builds, #{TABLE_NAME} IN ACCESS EXCLUSIVE MODE"
# Swap column names
temp_name = 'source_job_id_tmp'
execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:source_job_id)} TO #{quote_column_name(temp_name)}"
execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(:source_job_id_convert_to_bigint)} TO #{quote_column_name(:source_job_id)}"
execute "ALTER TABLE #{quote_table_name(TABLE_NAME)} RENAME COLUMN #{quote_column_name(temp_name)} TO #{quote_column_name(:source_job_id_convert_to_bigint)}"
# We need to update the trigger function in order to make PostgreSQL to
# regenerate the execution plan for it. This is to avoid type mismatch errors like
# "type of parameter 15 (bigint) does not match that when preparing the plan (integer)"
function_name = Gitlab::Database::UnidirectionalCopyTrigger.on_table(TABLE_NAME, connection: connection).name(:source_job_id, :source_job_id_convert_to_bigint)
execute "ALTER FUNCTION #{quote_table_name(function_name)} RESET ALL"
# No need to swap defaults, both columns have no default value
# Rename the index on the `bigint` column to match the new column name
# (we already hold an exclusive lock, so no need to use DROP INDEX CONCURRENTLY here)
execute 'DROP INDEX index_ci_sources_pipelines_on_source_job_id'
rename_index TABLE_NAME, 'index_ci_sources_pipelines_on_source_job_id_convert_to_bigint', 'index_ci_sources_pipelines_on_source_job_id'
# Drop original FK on the old int4 `source_job_id` (fk_be5624bf37)
remove_foreign_key TABLE_NAME, name: 'fk_be5624bf37'
# We swapped the columns but the FK is still using the temporary name
# So we have to also swap the FK name now that we dropped the other one
rename_constraint(TABLE_NAME, 'fk_be5624bf37_tmp', 'fk_be5624bf37')
end
end
end
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