X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-database.git/blobdiff_plain/7aa5faf0356f7532729efe48840f84d4685303ed..82ea287fbac5e9f6ab383a8fa8e3fc2bc538821e:/sipb_xen_database/models.py

diff --git a/sipb_xen_database/models.py b/sipb_xen_database/models.py
index 12db8c9..9fbf4dc 100644
--- a/sipb_xen_database/models.py
+++ b/sipb_xen_database/models.py
@@ -5,16 +5,22 @@ from sqlalchemy.ext.assignmapper import assign_mapper
 
 __all__ = ['meta',
            'ctx',
+           'clear_cache',
            'machine_table',
+           'machine_access_table',
            'nic_table',
            'disk_table',
            'types_table',
            'cdroms_table',
+           'autoinstalls_table',
            'Machine',
+           'MachineAccess',
            'NIC',
            'Disk',
            'Type',
-           'CDROM']
+           'CDROM',
+           'Autoinstall',
+           ]
 
 meta = DynamicMetaData()
 ctx = SessionContext(create_session)
@@ -22,6 +28,7 @@ ctx = SessionContext(create_session)
 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),
@@ -55,10 +62,15 @@ 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))
+
 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'))
+       PrimaryKeyConstraint('machine_id', 'user', ondelete='CASCADE'))
 
 class Machine(object):
     def __repr__(self):
@@ -69,19 +81,10 @@ class MachineAccess(object):
         return "<MachineAccess machine='%s' user='%s'>" % (self.machine, self.user)
 
 class NIC(object):
-    def __init__(self, machine_id, mac_addr, ip, hostname):
-        self.machine_id = machine_id
-        self.mac_addr = mac_addr
-        self.ip = ip
-        self.hostname = hostname
     def __repr__(self):
         return "<NIC: mac='%s' machine='%s' ip='%s' hostname='%s'>" % (self.mac_addr, self.machine_id, self.ip, self.hostname)
 
 class Disk(object):
-    def __init__(self, machine_id, guest, size):
-        self.machine_id = machine_id
-        self.guest_device_name = guest
-        self.size = size
     def __repr__(self):
         return "<Disk: machine=%s device=%s size=%s>" % (self.machine_id, self.guest_device_name, self.size)
 
@@ -90,19 +93,29 @@ class Type(object):
         return "<Type %s: %s>" % (self.type_id, self.description)
 
 class CDROM(object):
-    def __init__(self, cdrom_id, description):
-        self.cdrom_id = cdrom_id
-        self.description = description
     def __repr__(self):
         return "<CDROM %s: %s>" % (self.cdrom_id, self.description)
 
+class Autoinstall(object):
+    def __repr__(self):
+        return "<Autoinstall %s: %s (%s)>" % (self.autoinstall_id, self.description, self.type.type_id)
+
 assign_mapper(ctx, Machine, machine_table,
-              properties={'nics': relation(NIC, backref="machine"),
-                          'disks': relation(Disk, backref="machine"),
-                          'type': relation(Type),
-                          'users': relation(MachineAccess, backref="machine")});
+              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")});
 assign_mapper(ctx, MachineAccess, machine_access_table)
 assign_mapper(ctx, NIC, nic_table)
 assign_mapper(ctx, Disk, disk_table)
 assign_mapper(ctx, Type, types_table)
 assign_mapper(ctx, CDROM, cdroms_table)
+assign_mapper(ctx, 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?"""
+
+    ctx.registry.clear()