1 from sqlalchemy import *
2 from sqlalchemy import orm
3 from sqlalchemy.orm import create_session, relation
5 from sqlalchemy.ext.sessioncontext import SessionContext
6 from sqlalchemy.ext.assignmapper import assign_mapper
12 'machine_access_table',
28 meta = ThreadLocalMetaData()
29 session = orm.scoped_session(orm.sessionmaker())
31 machine_table = Table('machines', meta,
32 Column('machine_id', Integer, primary_key=True, nullable=False),
33 Column('name', String, nullable=False),
34 Column('description', String, nullable=False),
35 Column('memory', Integer, nullable=False),
36 Column('owner', String, nullable=False),
37 Column('contact', String, nullable=False),
38 Column('uuid', String, nullable=False),
39 Column('administrator', String, nullable=False, default=False),
40 Column('type_id', String, ForeignKey('types.type_id'), nullable=False),
41 Column('autorestart', Boolean, nullable=False, default=False),
42 Column('cpus', Integer, nullable=False, default=1),
43 Column('adminable', Boolean, nullable=False, default=False))
45 nic_table = Table('nics', meta,
46 Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=True),
47 Column('mac_addr', String, nullable=False, primary_key=True),
48 Column('ip', String, nullable=False, unique=True),
49 Column('hostname', String, nullable=True))
51 disk_table = Table('disks', meta,
52 Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=False),
53 Column('guest_device_name', String, nullable=False),
54 Column('size', Integer, nullable=False),
55 PrimaryKeyConstraint('machine_id', 'guest_device_name'))
57 types_table = Table('types', meta,
58 Column('type_id', String, primary_key=True, nullable=False),
59 Column('description', String, nullable=False),
60 Column('hvm', Boolean, nullable=False),
61 Column('apic', Boolean, nullable=False),
62 Column('acpi', Boolean, nullable=False),
63 Column('pae', Boolean, nullable=False))
65 cdroms_table = Table('cdroms', meta,
66 Column('cdrom_id', String, primary_key=True, nullable=False),
67 Column('description', String, nullable=False))
69 autoinstalls_table = Table('autoinstalls', meta,
70 Column('autoinstall_id', String, primary_key=True, nullable=False),
71 Column('description', String, nullable=False),
72 Column('type_id', String, ForeignKey('types.type_id'), nullable=False),
73 Column('distribution', String, nullable=False),
74 Column('mirror', String, nullable=False))
76 machine_access_table = Table('machine_access', meta,
77 Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=False, index=True),
78 Column('user', String, nullable=False, index=True),
79 PrimaryKeyConstraint('machine_id', 'user', ondelete='CASCADE'))
81 class Machine(object):
83 return "<Machine %s: name='%s' owner='%s'>" % (self.machine_id, self.name, self.owner)
85 class MachineAccess(object):
87 return "<MachineAccess machine='%s' user='%s'>" % (self.machine, self.user)
91 return "<NIC: mac='%s' machine='%s' ip='%s' hostname='%s'>" % (self.mac_addr, self.machine_id, self.ip, self.hostname)
95 return "<Disk: machine=%s device=%s size=%s>" % (self.machine_id, self.guest_device_name, self.size)
99 return "<Type %s: %s>" % (self.type_id, self.description)
103 return "<CDROM %s: %s>" % (self.cdrom_id, self.description)
105 class Autoinstall(object):
107 return "<Autoinstall %s: %s (%s)>" % (self.autoinstall_id, self.description, self.type.type_id)
109 session.mapper(Machine, machine_table,
110 properties={'nics': relation(NIC, backref="machine", lazy=False),
111 'disks': relation(Disk, backref="machine", lazy=False),
112 'type': relation(Type, lazy=False),
113 'acl': relation(MachineAccess, backref="machine", lazy=False, passive_deletes=True, cascade="all, delete-orphan")});
114 session.mapper(MachineAccess, machine_access_table)
115 session.mapper(NIC, nic_table)
116 session.mapper(Disk, disk_table)
117 session.mapper(Type, types_table)
118 session.mapper(CDROM, cdroms_table)
119 session.mapper(Autoinstall, autoinstalls_table)
122 """Clear sqlalchemy's cache.
124 This _seems_ to be the way; it works, but the docs don't mention
125 it. Why is this so obscure?"""
127 # XXX maybe we still need to do this, but it's not doc'd how.
128 #ctx.registry.clear()