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OpenStack Study: 014_add_image_tags_table.py

OpenStack Index

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def define_image_tags_table(meta):

# Load the images table so the foreign key can be set up properly

schema.Table('images', meta, autoload=True)

image_tags = schema.Table('image_tags',

schema.Column('id',

glance_schema.Integer(),

primary_key=True,

nullable=False),

schema.Column('image_id',

glance_schema.String(36),

schema.ForeignKey('images.id'),

nullable=False),

schema.Column('value',

glance_schema.String(255),

nullable=False),

schema.Column('created_at',

glance_schema.DateTime(),

nullable=False),

schema.Column('updated_at',

glance_schema.DateTime()),

schema.Column('deleted_at',

glance_schema.DateTime()),

schema.Column('deleted',

glance_schema.Boolean(),

nullable=False,

default=False),

mysql_engine='InnoDB')

schema.Index('ix_image_tags_image_id',

image_tags.c.image_id)

schema.Index('ix_image_tags_image_id_tag_value',

image_tags.c.image_id,

image_tags.c.value)

return image_tags

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def upgrade(migrate_engine):

meta = schema.MetaData()

meta.bind = migrate_engine

tables = [define_image_tags_table(meta)]

glance_schema.create_tables(tables)

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def downgrade(migrate_engine):

meta = schema.MetaData()

meta.bind = migrate_engine

tables = [define_image_tags_table(meta)]

glance_schema.drop_tables(tables)