1 from sqlalchemy import *
3 from sqlalchemy.ext.sessioncontext import SessionContext
4 from sqlalchemy.ext.assignmapper import assign_mapper
19 meta = DynamicMetaData()
20 ctx = SessionContext(create_session)
22 machine_table = Table('machines', meta,
23 Column('machine_id', Integer, primary_key=True, nullable=False),
24 Column('name', String, nullable=False),
25 Column('memory', Integer, nullable=False),
26 Column('owner', String, nullable=False),
27 Column('contact', String, nullable=False),
28 Column('uuid', String, nullable=False),
29 Column('administrator', String, nullable=False, default=False),
30 Column('type_id', String, ForeignKey('types.type_id'), nullable=False),
31 Column('autorestart', Boolean, nullable=False, default=False),
32 Column('cpus', Integer, nullable=False, default=1))
34 nic_table = Table('nics', meta,
35 Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=True),
36 Column('mac_addr', String, nullable=False, primary_key=True),
37 Column('ip', String, nullable=False, unique=True),
38 Column('hostname', String, nullable=True))
40 disk_table = Table('disks', meta,
41 Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=False),
42 Column('guest_device_name', String, nullable=False),
43 Column('size', Integer, nullable=False),
44 PrimaryKeyConstraint('machine_id', 'guest_device_name'))
46 types_table = Table('types', meta,
47 Column('type_id', String, primary_key=True, nullable=False),
48 Column('description', String, nullable=False),
49 Column('hvm', Boolean, nullable=False),
50 Column('apic', Boolean, nullable=False),
51 Column('acpi', Boolean, nullable=False),
52 Column('pae', Boolean, nullable=False))
54 cdroms_table = Table('cdroms', meta,
55 Column('cdrom_id', String, primary_key=True, nullable=False),
56 Column('description', String, nullable=False))
59 class Machine(object):
61 return "<Machine %s: name='%s' owner='%s'>" % (self.machine_id, self.name, self.owner)
64 def __init__(self, machine_id, mac_addr, ip, hostname):
65 self.machine_id = machine_id
66 self.mac_addr = mac_addr
68 self.hostname = hostname
70 return "<NIC: mac='%s' machine='%s' ip='%s' hostname='%s'>" % (self.mac_addr, self.machine_id, self.ip, self.hostname)
73 def __init__(self, machine_id, guest, size):
74 self.machine_id = machine_id
75 self.guest_device_name = guest
78 return "<Disk: machine=%s device=%s size=%s>" % (self.machine_id, self.guest_device_name, self.size)
82 return "<Type %s: %s>" % (self.type_id, self.description)
85 def __init__(self, cdrom_id, description):
86 self.cdrom_id = cdrom_id
87 self.description = description
89 return "<CDROM %s: %s>" % (self.cdrom_id, self.description)
91 assign_mapper(ctx, Machine, machine_table,
92 properties={'nics': relation(NIC, backref="machine"),
93 'disks': relation(Disk, backref="machine"),
94 'type': relation(Type)});
95 assign_mapper(ctx, NIC, nic_table)
96 assign_mapper(ctx, Disk, disk_table)
97 assign_mapper(ctx, Type, types_table)
98 assign_mapper(ctx, CDROM, cdroms_table)