Add a description field.

[invirt/packages/invirt-database.git] / sipb_xen_database / models.py

diff --git a/sipb_xen_database/models.py b/sipb_xen_database/models.py
index e34051b..9fbf4dc 100644 (file)
--- a/sipb_xen_database/models.py
+++ b/sipb_xen_database/models.py
@@ -5,18 +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)
@@ -24,6 +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),
@@ -57,10 +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):
@@ -86,13 +96,26 @@ class CDROM(object):
     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),
-                          'acl': 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()