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Source code for galaxy.model.migrate.versions.0165_add_content_update_time

"""
Adds timestamps to hdca table. Adds triggers to dataset, hda, hdca tables
to update history.update_time when contents are changed.
"""

import logging

from sqlalchemy import Column, DateTime, MetaData, Table

from galaxy.model.migrate.triggers.history_update_time_field import drop_timestamp_triggers, install_timestamp_triggers
from galaxy.model.migrate.versions.util import add_column, drop_column
from galaxy.model.orm.now import now

log = logging.getLogger(__name__)
metadata = MetaData()


[docs]def upgrade(migrate_engine): print(__doc__) metadata.bind = migrate_engine metadata.reflect() create_timestamps(metadata, "history_dataset_collection_association") install_timestamp_triggers(migrate_engine)
[docs]def downgrade(migrate_engine): metadata.bind = migrate_engine metadata.reflect() drop_timestamp_triggers(migrate_engine) drop_timestamps(metadata, "history_dataset_collection_association")
[docs]def create_timestamps(metadata, table_name): target_table = Table(table_name, metadata, autoload=True) if 'create_time' not in target_table.c: create_time_column = Column("create_time", DateTime, default=now) add_column(create_time_column, target_table, metadata) if 'update_time' not in target_table.c: update_time_column = Column("update_time", DateTime, default=now, onupdate=now) add_column(update_time_column, target_table, metadata)
[docs]def drop_timestamps(metadata, table_name): target_table = Table(table_name, metadata, autoload=True) drop_column("create_time", target_table) drop_column("update_time", target_table)