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Source code for tool_shed.webapp.model.migrate.versions.0007_add_long_description_times_downloaded_columns

"""
Migration script to add the long_description and times_downloaded columns to the repository table.
"""

import logging
import sys

from sqlalchemy import (
    Column,
    Integer,
    MetaData,
    Table,
    TEXT,
)

log = logging.getLogger(__name__)
log.setLevel(logging.DEBUG)
handler = logging.StreamHandler(sys.stdout)
format = "%(name)s %(levelname)s %(asctime)s %(message)s"
formatter = logging.Formatter(format)
handler.setFormatter(formatter)
log.addHandler(handler)

metadata = MetaData()


[docs]def upgrade(migrate_engine): print(__doc__) metadata.bind = migrate_engine metadata.reflect() # Create and initialize imported column in job table. Repository_table = Table("repository", metadata, autoload=True) c = Column("long_description", TEXT) try: # Create c.create(Repository_table) assert c is Repository_table.c.long_description except Exception: log.exception("Adding long_description column to the repository table failed.") c = Column("times_downloaded", Integer) try: # Create c.create(Repository_table) assert c is Repository_table.c.times_downloaded except Exception: log.exception("Adding times_downloaded column to the repository table failed.") cmd = "UPDATE repository SET long_description = ''" migrate_engine.execute(cmd) cmd = "UPDATE repository SET times_downloaded = 0" migrate_engine.execute(cmd)
[docs]def downgrade(migrate_engine): metadata.bind = migrate_engine metadata.reflect() # Drop email_alerts column from repository table. Repository_table = Table("repository", metadata, autoload=True) try: Repository_table.c.long_description.drop() except Exception: log.exception("Dropping column long_description from the repository table failed.") try: Repository_table.c.times_downloaded.drop() except Exception: log.exception("Dropping column times_downloaded from the repository table failed.")