1 from sqlalchemy import *
3 from sqlalchemy.ext.sessioncontext import SessionContext
4 from sqlalchemy.ext.assignmapper import assign_mapper
10 'machine_access_table',
22 meta = DynamicMetaData()
23 ctx = SessionContext(create_session)
25 machine_table = Table('machines', meta,
26 Column('machine_id', Integer, primary_key=True, nullable=False),
27 Column('name', String, nullable=False),
28 Column('memory', Integer, nullable=False),
29 Column('owner', String, nullable=False),
30 Column('contact', String, nullable=False),
31 Column('uuid', String, nullable=False),
32 Column('administrator', String, nullable=False, default=False),
33 Column('type_id', String, ForeignKey('types.type_id'), nullable=False),
34 Column('autorestart', Boolean, nullable=False, default=False),
35 Column('cpus', Integer, nullable=False, default=1))
37 nic_table = Table('nics', meta,
38 Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=True),
39 Column('mac_addr', String, nullable=False, primary_key=True),
40 Column('ip', String, nullable=False, unique=True),
41 Column('hostname', String, nullable=True))
43 disk_table = Table('disks', meta,
44 Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=False),
45 Column('guest_device_name', String, nullable=False),
46 Column('size', Integer, nullable=False),
47 PrimaryKeyConstraint('machine_id', 'guest_device_name'))
49 types_table = Table('types', meta,
50 Column('type_id', String, primary_key=True, nullable=False),
51 Column('description', String, nullable=False),
52 Column('hvm', Boolean, nullable=False),
53 Column('apic', Boolean, nullable=False),
54 Column('acpi', Boolean, nullable=False),
55 Column('pae', Boolean, nullable=False))
57 cdroms_table = Table('cdroms', meta,
58 Column('cdrom_id', String, primary_key=True, nullable=False),
59 Column('description', String, nullable=False))
61 machine_access_table = Table('machine_access', meta,
62 Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=False, index=True),
63 Column('user', String, nullable=False, index=True),
64 PrimaryKeyConstraint('machine_id', 'user'))
66 class Machine(object):
68 return "<Machine %s: name='%s' owner='%s'>" % (self.machine_id, self.name, self.owner)
70 class MachineAccess(object):
72 return "<MachineAccess machine='%s' user='%s'>" % (self.machine, self.user)
76 return "<NIC: mac='%s' machine='%s' ip='%s' hostname='%s'>" % (self.mac_addr, self.machine_id, self.ip, self.hostname)
80 return "<Disk: machine=%s device=%s size=%s>" % (self.machine_id, self.guest_device_name, self.size)
84 return "<Type %s: %s>" % (self.type_id, self.description)
88 return "<CDROM %s: %s>" % (self.cdrom_id, self.description)
90 assign_mapper(ctx, Machine, machine_table,
91 properties={'nics': relation(NIC, backref="machine"),
92 'disks': relation(Disk, backref="machine"),
93 'type': relation(Type),
94 'acl': relation(MachineAccess, backref="machine")});
95 assign_mapper(ctx, MachineAccess, machine_access_table)
96 assign_mapper(ctx, NIC, nic_table)
97 assign_mapper(ctx, Disk, disk_table)
98 assign_mapper(ctx, Type, types_table)
99 assign_mapper(ctx, CDROM, cdroms_table)
102 """Clear sqlalchemy's cache.
104 This _seems_ to be the way; it works, but the docs don't mention
105 it. Why is this so obscure?"""