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('boot_off_cd', Boolean, 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):
63 def __init__(self, machine_id, mac_addr, ip, hostname):
64 self.machine_id = machine_id
65 self.mac_addr = mac_addr
67 self.hostname = hostname
70 def __init__(self, machine_id, guest, size):
71 self.machine_id = machine_id
72 self.guest_device_name = guest
79 def __init__(self, cdrom_id, description):
80 self.cdrom_id = cdrom_id
81 self.description = description
83 assign_mapper(ctx, Machine, machine_table, \
84 properties={'nics': relation(NIC),
85 'disks': relation(Disk)});
86 assign_mapper(ctx, NIC, nic_table)
87 assign_mapper(ctx, Disk, disk_table)
88 assign_mapper(ctx, Type, types_table)
89 assign_mapper(ctx, CDROM, cdroms_table)