Expose the function for clearing the cache.

[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 161a0a6..8b4a389 100644 (file)
--- a/sipb_xen_database/models.py
+++ b/sipb_xen_database/models.py
@@ -3,6 +3,21 @@ from sqlalchemy import *
 from sqlalchemy.ext.sessioncontext import SessionContext
 from sqlalchemy.ext.assignmapper import assign_mapper
 
+__all__ = ['meta',
+           'ctx',
+           'machine_table',
+           'machine_access_table',
+           'nic_table',
+           'disk_table',
+           'types_table',
+           'cdroms_table',
+           'Machine',
+           'MachineAccess',
+           'NIC',
+           'Disk',
+           'Type',
+           'CDROM']
+
 meta = DynamicMetaData()
 ctx = SessionContext(create_session)
 
@@ -13,16 +28,16 @@ machine_table = Table('machines', meta,
        Column('owner', String, nullable=False),
        Column('contact', String, nullable=False),
        Column('uuid', String, nullable=False),
-       Column('boot_off_cd', Boolean, nullable=False, default=False),
+       Column('administrator', String, nullable=False, default=False),
        Column('type_id', String, ForeignKey('types.type_id'), nullable=False),
        Column('autorestart', Boolean, nullable=False, default=False),
        Column('cpus', Integer, nullable=False, default=1))
 
 nic_table = Table('nics', meta,
        Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=True),
-       Column('mac_addr', String, nullable=False),
-       Column('ip', String, nullable=False),
-       Column('hostname', String, primary_key=True, nullable=False))
+       Column('mac_addr', String, nullable=False, primary_key=True),
+       Column('ip', String, nullable=False, unique=True),
+       Column('hostname', String, nullable=True))
 
 disk_table = Table('disks', meta,
        Column('machine_id', Integer, ForeignKey('machines.machine_id'), nullable=False),
@@ -33,28 +48,59 @@ disk_table = Table('disks', meta,
 types_table = Table('types', meta,
        Column('type_id', String, primary_key=True, nullable=False),
        Column('description', String, nullable=False),
+       Column('hvm', Boolean, nullable=False),
        Column('apic', Boolean, nullable=False),
        Column('acpi', Boolean, nullable=False),
        Column('pae', Boolean, nullable=False))
 
+cdroms_table = Table('cdroms', meta,
+       Column('cdrom_id', String, primary_key=True, nullable=False),
+       Column('description', String, 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'))
 
 class Machine(object):
-    pass
+    def __repr__(self):
+        return "<Machine %s: name='%s' owner='%s'>" % (self.machine_id, self.name, self.owner)
+
+class MachineAccess(object):
+    def __repr__(self):
+        return "<MachineAccess machine='%s' user='%s'>" % (self.machine, self.user)
 
 class NIC(object):
-    pass
+    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):
-    pass
+    def __repr__(self):
+        return "<Disk: machine=%s device=%s size=%s>" % (self.machine_id, self.guest_device_name, self.size)
 
 class Type(object):
-    pass
+    def __repr__(self):
+        return "<Type %s: %s>" % (self.type_id, self.description)
 
+class CDROM(object):
+    def __repr__(self):
+        return "<CDROM %s: %s>" % (self.cdrom_id, self.description)
 
-assign_mapper(ctx, Machine, machine_table, \
-              properties={'nics': relation(NIC),
-                          'disks': relation(Disk)});
+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")});
+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)
+
+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()