from sqlalchemy import * from sqlalchemy import orm from sqlalchemy.orm import create_session, relation from sqlalchemy.ext.sessioncontext import SessionContext from sqlalchemy.ext.assignmapper import assign_mapper __all__ = ['meta', 'session', 'clear_cache', 'machine_table', 'machine_access_table', 'nic_table', 'disk_table', 'types_table', 'cdroms_table', 'autoinstalls_table', 'Machine', 'MachineAccess', 'NIC', 'Disk', 'Type', 'CDROM', 'Autoinstall', 'or_', ] meta = ThreadLocalMetaData() session = orm.scoped_session(orm.sessionmaker()) machine_table = Table('machines', meta, Column('machine_id', Integer, primary_key=True, nullable=False), Column('name', String, nullable=False), Column('description', String, nullable=False), Column('memory', Integer, nullable=False), Column('owner', String, nullable=False), Column('contact', String, nullable=False), Column('uuid', String, nullable=False), Column('administrator', String, nullable=False, default=False), Column('type_id', String, ForeignKey('types.type_id'), nullable=False), Column('autorestart', Boolean, nullable=False, default=False), Column('cpus', Integer, nullable=False, default=1), Column('adminable', Boolean, nullable=False, default=False)) nic_table = Table('nics', meta, Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=True), Column('mac_addr', String, nullable=False, primary_key=True), Column('ip', String, nullable=False, unique=True), Column('hostname', String, nullable=True)) disk_table = Table('disks', meta, Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=False), Column('guest_device_name', String, nullable=False), Column('size', Integer, nullable=False), PrimaryKeyConstraint('machine_id', 'guest_device_name')) types_table = Table('types', meta, Column('type_id', String, primary_key=True, nullable=False), Column('description', String, nullable=False), Column('hvm', Boolean, nullable=False), Column('apic', Boolean, nullable=False), Column('acpi', Boolean, nullable=False), Column('pae', Boolean, nullable=False)) cdroms_table = Table('cdroms', meta, Column('cdrom_id', String, primary_key=True, nullable=False), Column('description', String, nullable=False)) autoinstalls_table = Table('autoinstalls', meta, Column('autoinstall_id', String, primary_key=True, nullable=False), Column('description', String, nullable=False), Column('type_id', String, ForeignKey('types.type_id'), nullable=False), Column('distribution', String, nullable=False), Column('mirror', String, nullable=False)) machine_access_table = Table('machine_access', meta, Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=False, index=True), Column('user', String, nullable=False, index=True), PrimaryKeyConstraint('machine_id', 'user', ondelete='CASCADE')) class Machine(object): def __repr__(self): return "" % (self.machine_id, self.name, self.owner) class MachineAccess(object): def __repr__(self): return "" % (self.machine, self.user) class NIC(object): def __repr__(self): return "" % (self.mac_addr, self.machine_id, self.ip, self.hostname) class Disk(object): def __repr__(self): return "" % (self.machine_id, self.guest_device_name, self.size) class Type(object): def __repr__(self): return "" % (self.type_id, self.description) class CDROM(object): def __repr__(self): return "" % (self.cdrom_id, self.description) class Autoinstall(object): def __repr__(self): return "" % (self.autoinstall_id, self.description, self.type.type_id) session.mapper(Machine, machine_table, properties={'nics': relation(NIC, backref="machine", lazy=False), 'disks': relation(Disk, backref="machine", lazy=False), 'type': relation(Type, lazy=False), 'acl': relation(MachineAccess, backref="machine", lazy=False, passive_deletes=True, cascade="all, delete-orphan")}); session.mapper(MachineAccess, machine_access_table) session.mapper(NIC, nic_table) session.mapper(Disk, disk_table) session.mapper(Type, types_table) session.mapper(CDROM, cdroms_table) session.mapper(Autoinstall, autoinstalls_table) def clear_cache(): """Clear sqlalchemy's cache. This _seems_ to be the way; it works, but the docs don't mention it. Why is this so obscure?""" # XXX maybe we still need to do this, but it's not doc'd how. #ctx.registry.clear()