def downgrade(migrate_engine):
# Operations to reverse the above upgrade go here.
meta = sql.MetaData()
meta.bind = migrate_engine
role_user_table = sql.Table('role_user_fiware', meta, autoload=True)
role_fiware = sql.Table('role_fiware', meta, autoload=True)
if 'mysql' in str(meta):
ForeignKeyConstraint(columns=[role_user_table.c.role_id],
refcolumns=[role_fiware.c.id],
name='role_user_fiware_ibfk_1',
ondelete='CASCADE').drop()
ForeignKeyConstraint(columns=[role_user_table.c.role_id],
refcolumns=[role_fiware.c.id],
name='role_user_fiware_ibfk_1').create()
if 'postgres' in str(meta):
ForeignKeyConstraint(columns=[role_user_table.c.role_id],
refcolumns=[role_fiware.c.id],
name='role_user_fiware_role_id_fkey',
ondelete='CASCADE').drop()
ForeignKeyConstraint(columns=[role_user_table.c.role_id],
refcolumns=[role_fiware.c.id],
name='role_user_fiware_role_id_fkey').create()
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine; bind
# migrate_engine to your metadata
meta = sql.MetaData()
meta.bind = migrate_engine
authorization_code_table = sql.Table('authorization_code_oauth2', meta, autoload=True)
consumer_oauth2 = sql.Table('consumer_oauth2', meta, autoload=True)
if 'mysql' in str(meta):
ForeignKeyConstraint(
columns=[authorization_code_table.c.consumer_id],
refcolumns=[consumer_oauth2.c.id],
name='authorization_code_oauth2_ibfk_1').drop()
ForeignKeyConstraint(
columns=[authorization_code_table.c.consumer_id],
refcolumns=[consumer_oauth2.c.id],
name='authorization_code_oauth2_ibfk_1', ondelete='CASCADE').create()
elif 'postgres' in str(meta):
ForeignKeyConstraint(
columns=[authorization_code_table.c.consumer_id],
refcolumns=[consumer_oauth2.c.id],
name='authorization_code_oauth2_consumer_id_fkey').drop()
ForeignKeyConstraint(
columns=[authorization_code_table.c.consumer_id],
refcolumns=[consumer_oauth2.c.id],
name='authorization_code_oauth2_consumer_id_fkey', ondelete='CASCADE').create()
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine; bind
# migrate_engine to your metadata
meta = sql.MetaData()
meta.bind = migrate_engine
role_user_table = sql.Table('role_user_fiware', meta, autoload=True)
role_fiware = sql.Table('role_fiware', meta, autoload=True)
if 'mysql' in str(meta):
ForeignKeyConstraint(columns=[role_user_table.c.role_id],
refcolumns=[role_fiware.c.id],
name='role_user_fiware_ibfk_1').drop()
ForeignKeyConstraint(columns=[role_user_table.c.role_id],
refcolumns=[role_fiware.c.id],
name='role_user_fiware_ibfk_1',
ondelete='CASCADE').create()
if 'postgres' in str(meta):
ForeignKeyConstraint(columns=[role_user_table.c.role_id],
refcolumns=[role_fiware.c.id],
name='role_user_fiware_role_id_fkey').drop()
ForeignKeyConstraint(columns=[role_user_table.c.role_id],
refcolumns=[role_fiware.c.id],
name='role_user_fiware_role_id_fkey',
ondelete='CASCADE').create()
def upgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
flavors = Table('flavors',
meta,
Column('created_at', DateTime),
Column('updated_at', DateTime),
Column('name', String(length=255), nullable=False),
Column('id', Integer, primary_key=True, nullable=False),
Column('memory_mb', Integer, nullable=False),
Column('vcpus', Integer, nullable=False),
Column('swap', Integer, nullable=False),
Column('vcpu_weight', Integer),
Column('flavorid', String(length=255), nullable=False),
Column('rxtx_factor', Float),
Column('root_gb', Integer),
Column('ephemeral_gb', Integer),
Column('disabled', Boolean),
Column('is_public', Boolean),
UniqueConstraint("flavorid", name="uniq_flavors0flavorid"),
UniqueConstraint("name", name="uniq_flavors0name"),
mysql_engine='InnoDB',
mysql_charset='utf8')
flavors.create(checkfirst=True)
flavor_extra_specs = Table(
'flavor_extra_specs',
meta,
Column('created_at', DateTime),
Column('updated_at', DateTime),
Column('id', Integer, primary_key=True, nullable=False),
Column('flavor_id', Integer, nullable=False),
Column('key', String(length=255), nullable=False),
Column('value', String(length=255)),
UniqueConstraint('flavor_id',
'key',
name='uniq_flavor_extra_specs0flavor_id0key'),
Index('flavor_extra_specs_flavor_id_key_idx', 'flavor_id', 'key'),
ForeignKeyConstraint(columns=['flavor_id'], refcolumns=[flavors.c.id]),
mysql_engine='InnoDB',
mysql_charset='utf8')
flavor_extra_specs.create(checkfirst=True)
flavor_projects = Table(
'flavor_projects',
meta,
Column('created_at', DateTime),
Column('updated_at', DateTime),
Column('id', Integer, primary_key=True, nullable=False),
Column('flavor_id', Integer, nullable=False),
Column('project_id', String(length=255), nullable=False),
UniqueConstraint('flavor_id',
'project_id',
name='uniq_flavor_projects0flavor_id0project_id'),
ForeignKeyConstraint(columns=['flavor_id'], refcolumns=[flavors.c.id]),
mysql_engine='InnoDB',
mysql_charset='utf8')
flavor_projects.create(checkfirst=True)
def upgrade(migrate_engine):
metadata = sa.MetaData()
metadata.bind = migrate_engine
builders = sautils.Table('builders', metadata, autoload=True)
masters = sautils.Table('masters', metadata, autoload=True)
workers = sautils.Table('workers', metadata, autoload=True)
builder_masters = sautils.Table('builder_masters', metadata, autoload=True)
configured_workers = sautils.Table('configured_workers',
metadata,
autoload=True)
for fk in (
ForeignKeyConstraint([builder_masters.c.builderid],
[builders.c.id],
ondelete='CASCADE'),
ForeignKeyConstraint([builder_masters.c.masterid], [masters.c.id],
ondelete='CASCADE'),
ForeignKeyConstraint([configured_workers.c.buildermasterid],
[builder_masters.c.id],
ondelete='CASCADE'),
ForeignKeyConstraint([configured_workers.c.workerid],
[workers.c.id],
ondelete='CASCADE'),
):
fk.drop()
fk.create()
def downgrade(migrate_engine):
# Operations to reverse the above upgrade go here.
meta = sql.MetaData()
meta.bind = migrate_engine
authorization_code_table = sql.Table('authorization_code_oauth2', meta, autoload=True)
consumer_oauth2 = sql.Table('consumer_oauth2', meta, autoload=True)
if 'mysql' in str(meta):
ForeignKeyConstraint(
columns=[authorization_code_table.c.consumer_id],
refcolumns=[consumer_oauth2.c.id],
name='authorization_code_oauth2_ibfk_1', ondelete='CASCADE').drop()
ForeignKeyConstraint(
columns=[authorization_code_table.c.consumer_id],
refcolumns=[consumer_oauth2.c.id],
name='authorization_code_oauth2_ibfk_1').create()
elif 'postgres' in str(meta):
ForeignKeyConstraint(
columns=[authorization_code_table.c.consumer_id],
refcolumns=[consumer_oauth2.c.id],
name='authorization_code_oauth2_consumer_id_fkey', ondelete='CASCADE').drop()
ForeignKeyConstraint(
columns=[authorization_code_table.c.consumer_id],
refcolumns=[consumer_oauth2.c.id],
name='authorization_code_oauth2_consumer_id_fkey').create()
def upgrade(migrate_engine):
# Upgrade operations go here. Don't create your own engine; bind
# migrate_engine to your metadata
meta = sql.MetaData()
meta.bind = migrate_engine
if 'mysql' in str(meta):
role_user_table = sql.Table('role_user_fiware', meta, autoload=True)
role_fiware_table = sql.Table('role_fiware', meta, autoload=True)
role_organization_table = sql.Table('role_organization_fiware',
meta,
autoload=True)
consumer_oauth2 = sql.Table('consumer_oauth2', meta, autoload=True)
project = sql.Table('project', meta, autoload=True)
ForeignKeyConstraint(columns=[role_user_table.c.application_id],
refcolumns=[consumer_oauth2.c.id],
name='role_user_fiware_ibfk_4').drop()
ForeignKeyConstraint(columns=[role_user_table.c.application_id],
refcolumns=[consumer_oauth2.c.id],
name='role_user_fiware_ibfk_4',
ondelete='CASCADE').create()
ForeignKeyConstraint(columns=[role_user_table.c.application_id],
refcolumns=[consumer_oauth2.c.id],
name='role_user_fiware_ibfk_3').drop()
ForeignKeyConstraint(columns=[role_user_table.c.application_id],
refcolumns=[consumer_oauth2.c.id],
name='role_user_fiware_ibfk_3',
ondelete='CASCADE').create()
ForeignKeyConstraint(columns=[role_fiware_table.c.application_id],
refcolumns=[consumer_oauth2.c.id],
name='role_fiware_ibfk_1').drop()
ForeignKeyConstraint(columns=[role_fiware_table.c.application_id],
refcolumns=[consumer_oauth2.c.id],
name='role_fiware_ibfk_1',
ondelete='CASCADE').create()
ForeignKeyConstraint(
columns=[role_organization_table.c.organization_id],
refcolumns=[project.c.id],
name='role_organization_fiware_ibfk_2').drop()
ForeignKeyConstraint(
columns=[role_organization_table.c.organization_id],
refcolumns=[project.c.id],
name='role_organization_fiware_ibfk_2',
ondelete='CASCADE').create()
ForeignKeyConstraint(
columns=[role_organization_table.c.organization_id],
refcolumns=[project.c.id],
name='role_organization_fiware_ibfk_3').drop()
ForeignKeyConstraint(
columns=[role_organization_table.c.organization_id],
refcolumns=[project.c.id],
name='role_organization_fiware_ibfk_3',
ondelete='CASCADE').create()
def upgrade(migrate_engine):
meta.bind = migrate_engine
roles_users = Table("roles_users", meta, autoload=True)
role = Table("role", meta, autoload=True)
user = Table("user", meta, autoload=True)
fk_role = ForeignKeyConstraint([roles_users.c.role_id], [role.c.id])
fk_role.create()
fk_user = ForeignKeyConstraint([roles_users.c.user_id], [user.c.id])
fk_user.create()
def migration_004_up(meta):
permission_table = sql.Table('permission_fiware', meta, autoload=True)
consumer_oauth2 = sql.Table('consumer_oauth2', meta, autoload=True)
ForeignKeyConstraint(columns=[permission_table.c.application_id],
refcolumns=[consumer_oauth2.c.id],
name='permission_fiware_application_id_fkey').drop()
ForeignKeyConstraint(columns=[permission_table.c.application_id],
refcolumns=[consumer_oauth2.c.id],
name='permission_fiware_application_id_fkey',
ondelete='CASCADE').create()
def downgrade(migrate_engine):
meta.bind = migrate_engine
studies_owners = Table("studies_owners", meta, autoload=True)
study = Table("study", meta, autoload=True)
user = Table("user", meta, autoload=True)
fk_study = ForeignKeyConstraint([studies_owners.c.study_id], [study.c.id])
fk_study.drop()
fk_user = ForeignKeyConstraint([studies_owners.c.user_id], [user.c.id])
fk_user.drop()
def upgrade(migrate_engine):
meta.bind = migrate_engine
upload = Table("upload", meta, autoload=True)
study = Table("study", meta, autoload=True)
user = Table("user", meta, autoload=True)
fk_study = ForeignKeyConstraint([upload.c.study_id], [study.c.id])
fk_study.create()
fk_user = ForeignKeyConstraint([upload.c.uploader_id], [user.c.id])
fk_user.create()
def migration_006_down(meta):
role_user_table = sql.Table('role_user_fiware', meta, autoload=True)
user = sql.Table('user', meta, autoload=True)
ForeignKeyConstraint(columns=[role_user_table.c.user_id],
refcolumns=[user.c.id],
name='role_user_fiware_user_id_fkey',
ondelete='CASCADE').drop()
ForeignKeyConstraint(columns=[role_user_table.c.user_id],
refcolumns=[user.c.id],
name='role_user_fiware_user_id_fkey').create()
def upgrade(migrate_engine):
meta.bind = migrate_engine
studies_collaborators = Table("studies_collaborators", meta, autoload=True)
study = Table("study", meta, autoload=True)
user = Table("user", meta, autoload=True)
fk_study = ForeignKeyConstraint([studies_collaborators.c.study_id],
[study.c.id])
fk_study.create()
fk_user = ForeignKeyConstraint([studies_collaborators.c.user_id],
[user.c.id])
fk_user.create()
def migration_005_down(meta):
role_permission_table = sql.Table('role_permission_fiware',
meta,
autoload=True)
role_fiware = sql.Table('role_fiware', meta, autoload=True)
ForeignKeyConstraint(columns=[role_permission_table.c.role_id],
refcolumns=[role_fiware.c.id],
name='role_permission_fiware_role_id_fkey',
ondelete='CASCADE').drop()
ForeignKeyConstraint(columns=[role_permission_table.c.role_id],
refcolumns=[role_fiware.c.id],
name='role_permission_fiware_role_id_fkey').create()
def drop_constraints_and_alter_types(primary_table_name, foreign_tables, revision_table_name):
# 1 drop all foreign key constraints
dropped_fk_constraints = []
primary_table = Table(primary_table_name, metadata, autoload=True)
for table_name in foreign_tables:
table = Table(table_name, metadata, autoload=True)
for constraint in table.constraints.copy():
if isinstance(constraint, sqlalchemy.schema.ForeignKeyConstraint):
foreign_key_cols = [key.column for key in constraint.elements]
fk_col = foreign_key_cols[0]
if fk_col.table == primary_table:
orig_fk = ForeignKeyConstraint(constraint.columns, foreign_key_cols, name=constraint.name, table=table)
orig_fk.drop()
dropped_fk_constraints.append((constraint.columns, foreign_key_cols, constraint.name, table.name))
#print 'CON', dropped_fk_constraints[-1]
# 2 alter type of primary table id and foreign keys
id_col = constraint.table.columns[constraint.columns[0]]
id_col.alter(type=UnicodeText)
primary_table = Table(primary_table_name, metadata, autoload=True)
id_col = primary_table.c['id']
id_col.alter(type=UnicodeText)
if revision_table_name:
# Revision table id column type changed as well
revision_table = Table(revision_table_name, metadata, autoload=True)
id_col = revision_table.c['id']
id_col.alter(type=UnicodeText)
return dropped_fk_constraints
def drop_constraints_and_alter_types():
# 1 drop all foreign key constraints
dropped_fk_constraints = []
revision_table = Table('revision', metadata, autoload=True)
foreign_tables = ['package', 'package_tag', 'package_revision', 'package_tag_revision', 'package_extra', 'package_extra_revision', ]
for table_name in foreign_tables:
table = Table(table_name, metadata, autoload=True)
for constraint in table.constraints.copy():
if isinstance(constraint, sqlalchemy.schema.ForeignKeyConstraint):
foreign_key_cols = [key.column for key in constraint.elements]
fk_col = foreign_key_cols[0]
if fk_col.table == revision_table:
orig_fk = ForeignKeyConstraint(constraint.columns, foreign_key_cols, name=constraint.name, table=table)
orig_fk.drop()
dropped_fk_constraints.append((constraint.columns, foreign_key_cols, constraint.name, table.name))
# 2 alter type of revision id and foreign keys
id_col = constraint.table.columns[constraint.columns[0]]
id_col.alter(type=UnicodeText)
revision_table = Table('revision', metadata, autoload=True)
id_col = revision_table.c['id']
id_col.alter(type=UnicodeText,
)
return dropped_fk_constraints
def upgrade(migrate_engine):
"""Add workers table."""
meta = MetaData()
meta.bind = migrate_engine
workers = Table(
'workers',
meta,
# Inherited fields from CinderBase
Column('created_at', DateTime(timezone=False)),
Column('updated_at', DateTime(timezone=False)),
Column('deleted_at', DateTime(timezone=False)),
Column('deleted', Boolean(), default=False),
# Workers table specific fields
Column('id', Integer, primary_key=True),
Column('resource_type', String(40), nullable=False),
Column('resource_id', String(36), nullable=False),
Column('status', String(255), nullable=False),
Column('service_id', Integer, nullable=True),
UniqueConstraint('resource_type', 'resource_id'),
mysql_engine='InnoDB',
mysql_charset='utf8',
)
workers.create()
services = Table('services', meta, autoload=True)
ForeignKeyConstraint(columns=[workers.c.service_id],
refcolumns=[services.c.id]).create()
def upgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
build_requests = Table('build_requests', meta, autoload=True)
request_specs = Table('request_specs', meta, autoload=True)
for fkey in build_requests.foreign_keys:
if fkey.target_fullname == 'request_specs.id':
ForeignKeyConstraint(columns=['request_spec_id'],
refcolumns=[request_specs.c.id],
table=build_requests,
name=fkey.name).drop()
break
# These are being made nullable because they are no longer used after the
# addition of the instance column. However they need a deprecation period
# before they can be dropped.
columns_to_nullify = [
'request_spec_id', 'user_id', 'security_groups', 'config_drive'
]
for column in columns_to_nullify:
getattr(build_requests.c, column).alter(nullable=True)
inspector = reflection.Inspector.from_engine(migrate_engine)
constrs = inspector.get_unique_constraints('build_requests')
constr_names = [constr['name'] for constr in constrs]
if 'uniq_build_requests0request_spec_id' in constr_names:
UniqueConstraint('request_spec_id',
table=build_requests,
name='uniq_build_requests0request_spec_id').drop()
def upgrade(migrate_engine):
metadata = sa.MetaData()
metadata.bind = migrate_engine
builders = sautils.Table('builders', metadata, autoload=True)
masters = sautils.Table('masters', metadata, autoload=True)
workers = sautils.Table('workers', metadata, autoload=True)
builder_masters = sautils.Table('builder_masters', metadata, autoload=True)
configured_workers = sautils.Table('configured_workers', metadata,
autoload=True)
fks_to_change = []
# we need to parse the reflected model in order to find the automatic fk name that was put
# mysql and pgsql have different naming convention so this is not very easy to have generic code working.
for table, keys in [(builder_masters, (builders.c.id, masters.c.id)),
(configured_workers, (builder_masters.c.id, workers.c.id))]:
for fk in table.constraints:
if not isinstance(fk, sa.ForeignKeyConstraint):
continue
for c in fk.elements:
if c.column in keys:
# migrate.xx.ForeignKeyConstraint is changing the model so initializing here
# would break the iteration (Set changed size during iteration)
fks_to_change.append((
table, (fk.columns, [c.column]), dict(name=fk.name, ondelete='CASCADE')))
for table, args, kwargs in fks_to_change:
fk = ForeignKeyConstraint(*args, **kwargs)
table.append_constraint(fk)
try:
fk.drop()
except NotSupportedError:
pass # some versions of sqlite do not support drop, but will still update the fk
fk.create()
def upgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
cell_mappings = Table('cell_mappings', meta, autoload=True)
host_mappings = Table('host_mappings',
meta,
Column('created_at', DateTime),
Column('updated_at', DateTime),
Column('id',
Integer,
primary_key=True,
nullable=False),
Column('cell_id', Integer, nullable=False),
Column('host', String(length=255), nullable=False),
UniqueConstraint('host',
name='uniq_host_mappings0host'),
Index('host_idx', 'host'),
ForeignKeyConstraint(columns=['cell_id'],
refcolumns=[cell_mappings.c.id
]),
mysql_engine='InnoDB',
mysql_charset='utf8')
host_mappings.create(checkfirst=True)
def upgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
cell_mappings = Table('cell_mappings', meta, autoload=True)
instance_mappings = Table(
'instance_mappings',
meta,
Column('created_at', DateTime),
Column('updated_at', DateTime),
Column('id', Integer, primary_key=True, nullable=False),
Column('instance_uuid', String(length=36), nullable=False),
Column('cell_id', Integer, nullable=False),
Column('project_id', String(length=255), nullable=False),
UniqueConstraint('instance_uuid',
name='uniq_instance_mappings0instance_uuid'),
Index('project_id_idx', 'project_id'),
ForeignKeyConstraint(columns=['cell_id'],
refcolumns=[cell_mappings.c.id]),
mysql_engine='InnoDB',
mysql_charset='utf8')
# NOTE(mriedem): DB2 creates an index when a unique constraint is created
# so trying to add a second index on the instance_uuid column will fail
# with error SQL0605W, so omit the index in the case of DB2.
if migrate_engine.name != 'ibm_db_sa':
Index('instance_uuid_idx', instance_mappings.c.instance_uuid)
instance_mappings.create(checkfirst=True)
def downgrade(migrate_engine):
meta.bind = migrate_engine
domains_table = Table('domains', meta, autoload=True)
domainmetadata_table = Table('domainmetadata', meta, autoload=True)
records_table = Table('records', meta, autoload=True)
records_fk = ForeignKeyConstraint([records_table.c.domain_id],
[domains_table.c.id],
ondelete="CASCADE")
records_fk.drop()
domainmetadata_fk = ForeignKeyConstraint(
[domainmetadata_table.c.domain_id], [domains_table.c.id],
ondelete="CASCADE")
domainmetadata_fk.drop()
def downgrade(migrate_engine):
# Operations to reverse the above upgrade go here.
meta.bind = migrate_engine
shelter = Table('shelter', meta, autoload=True)
puppy = Table('puppy', meta, autoload=True)
shelter_puppies = Table('shelter_puppies', meta, autoload=True)
cons1 = ForeignKeyConstraint([shelter_puppies.c.shelter_id],
[shelter.c.id])
cons1.drop()
cons2 = ForeignKeyConstraint([shelter_puppies.c.puppy_id], [puppy.c.id])
cons2.drop()
shelter_puppies.drop()
pass
def downgrade(migrate_engine):
meta.bind = migrate_engine
user = Table("user", meta, autoload=True)
site = Table("site", meta, autoload=True)
fk_site = ForeignKeyConstraint([user.c.site_id], [site.c.id])
fk_site.drop()
def downgrade(migrate_engine):
# Operations to reverse the above upgrade go here.
meta.bind = migrate_engine
puppy = Table('puppy', meta, autoload=True)
adoptors = Table('adoptors', meta, autoload=True)
puppy_adoptors = Table('puppy_adoptors', meta, autoload=True)
cons1 = ForeignKeyConstraint([puppy_adoptors.c.puppy_id], [puppy.c.id])
cons1.drop()
cons2 = ForeignKeyConstraint([puppy_adoptors.c.adoptor_id],
[adoptors.c.id])
cons2.drop()
puppy_adoptors.drop()
pass
def downgrade(migrate_engine):
# Operations to reverse the above upgrade go here.
meta = sql.MetaData()
meta.bind = migrate_engine
if 'mysql' in str(meta):
role_user_table = sql.Table('role_user_fiware', meta, autoload=True)
user = sql.Table('user', meta, autoload=True)
ForeignKeyConstraint(columns=[role_user_table.c.user_id],
refcolumns=[user.c.id],
name='role_user_fiware_ibfk_2',
ondelete='CASCADE').drop()
ForeignKeyConstraint(columns=[role_user_table.c.user_id],
refcolumns=[user.c.id],
name='role_user_fiware_ibfk_2').create()
def downgrade(migrate_engine):
# Operations to reverse the above upgrade go here.
meta = sql.MetaData()
meta.bind = migrate_engine
if 'mysql' in str(meta):
permission_table = sql.Table('permission_fiware', meta, autoload=True)
consumer_oauth2 = sql.Table('consumer_oauth2', meta, autoload=True)
ForeignKeyConstraint(
columns=[permission_table.c.application_id],
refcolumns=[consumer_oauth2.c.id],
name='permission_fiware_ibfk_1', ondelete='CASCADE').drop()
ForeignKeyConstraint(
columns=[permission_table.c.application_id],
refcolumns=[consumer_oauth2.c.id],
name='permission_fiware_ibfk_1').create()
def downgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
snapshots = Table('snapshots', meta, autoload=True)
volumes = Table('volumes', meta, autoload=True)
ForeignKeyConstraint(columns=[snapshots.c.volume_id],
refcolumns=[volumes.c.id]).drop()
def downgrade(migrate_engine):
meta = MetaData(bind=migrate_engine)
pci_devices = Table('pci_devices', meta, autoload=True)
compute_nodes = Table('compute_nodes', meta, autoload=True)
fkey = ForeignKeyConstraint(columns=[pci_devices.c.compute_node_id],
refcolumns=[compute_nodes.c.id])
fkey.drop()
def upgrade(migrate_engine):
meta.bind = migrate_engine
field.create()
field_type = Table("field_type", meta, autoload=True)
study = Table("study", meta, autoload=True)
fk_field_type = ForeignKeyConstraint([field.c.field_type_id],
[field_type.c.id])
fk_field_type.create()
fk_study = ForeignKeyConstraint([field.c.study_id], [study.c.id])
fk_study.create()
uk_study_id_order = UniqueConstraint(field.c.study_id,
field.c.order,
table=field)
uk_study_id_order.create()
