99 lines
3.5 KiB
Ruby
99 lines
3.5 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
module DbCleaner
|
|
def all_connection_classes
|
|
::BeforeAllAdapter.all_connection_classes
|
|
end
|
|
|
|
def delete_from_all_tables!(except: [])
|
|
except << 'ar_internal_metadata'
|
|
|
|
DatabaseCleaner.clean_with(:deletion, cache_tables: false, except: except)
|
|
end
|
|
|
|
def deletion_except_tables
|
|
['work_item_types']
|
|
end
|
|
|
|
def setup_database_cleaner
|
|
all_connection_classes.each do |connection_class|
|
|
DatabaseCleaner[:active_record, { connection: connection_class }]
|
|
end
|
|
end
|
|
|
|
def any_connection_class_with_more_than_allowed_columns?
|
|
all_connection_classes.any? do |connection_class|
|
|
more_than_allowed_columns?(connection_class)
|
|
end
|
|
end
|
|
|
|
def more_than_allowed_columns?(connection_class)
|
|
# Postgres maximum number of columns in a table is 1600 (https://github.com/postgres/postgres/blob/de41869b64d57160f58852eab20a27f248188135/src/include/access/htup_details.h#L23-L47).
|
|
# And since:
|
|
# "The DROP COLUMN form does not physically remove the column, but simply makes
|
|
# it invisible to SQL operations. Subsequent insert and update operations in the
|
|
# table will store a null value for the column. Thus, dropping a column is quick
|
|
# but it will not immediately reduce the on-disk size of your table, as the space
|
|
# occupied by the dropped column is not reclaimed.
|
|
# The space will be reclaimed over time as existing rows are updated."
|
|
# according to https://www.postgresql.org/docs/current/sql-altertable.html.
|
|
# We drop and recreate the database if any table has more than 1200 columns, just to be safe.
|
|
max_allowed_columns = 1200
|
|
tables_with_more_than_allowed_columns = connection_class.connection.execute(<<-SQL)
|
|
SELECT attrelid::regclass::text AS table, COUNT(*) AS column_count
|
|
FROM pg_attribute
|
|
GROUP BY attrelid
|
|
HAVING COUNT(*) > #{max_allowed_columns}
|
|
SQL
|
|
|
|
tables_with_more_than_allowed_columns.each do |result|
|
|
puts "The #{result['table']} (#{connection_class.connection_db_config.name}) table has #{result['column_count']} columns."
|
|
end
|
|
|
|
tables_with_more_than_allowed_columns.any?
|
|
end
|
|
|
|
def recreate_all_databases!
|
|
start = Gitlab::Metrics::System.monotonic_time
|
|
|
|
puts "Recreating the database"
|
|
|
|
force_disconnect_all_connections!
|
|
|
|
ActiveRecord::Tasks::DatabaseTasks.drop_current
|
|
ActiveRecord::Tasks::DatabaseTasks.create_current
|
|
ActiveRecord::Tasks::DatabaseTasks.load_schema_current
|
|
|
|
# Migrate each database individually
|
|
with_reestablished_active_record_base do
|
|
all_connection_classes.each do |connection_class|
|
|
ActiveRecord::Base.establish_connection(connection_class.connection_db_config)
|
|
|
|
ActiveRecord::Tasks::DatabaseTasks.migrate
|
|
end
|
|
end
|
|
|
|
puts "Databases re-creation done in #{Gitlab::Metrics::System.monotonic_time - start}"
|
|
end
|
|
|
|
def force_disconnect_all_connections!
|
|
all_connection_classes.each do |connection_class|
|
|
# We use `connection_pool` to avoid going through
|
|
# Load Balancer since it does retry ops
|
|
pool = connection_class.connection_pool
|
|
|
|
# Force disconnect https://www.cybertec-postgresql.com/en/terminating-database-connections-in-postgresql/
|
|
pool.connection.execute(<<-SQL)
|
|
SELECT pg_terminate_backend(pid)
|
|
FROM pg_stat_activity
|
|
WHERE datname = #{pool.connection.quote(pool.db_config.database)}
|
|
AND pid != pg_backend_pid();
|
|
SQL
|
|
|
|
connection_class.connection_pool.disconnect!
|
|
end
|
|
end
|
|
end
|
|
|
|
DbCleaner.prepend_mod_with('DbCleaner')
|