In my application I need to use the OVSDB manager to spawn ports and
bridges on OVS switches running on separate hosts. As I need to use
in-band control, I need to use an "active manager", i.e. the OVS switch
initiates the OVSDB connection to the manager.
It appears that the OVSDB manager library provided in Ryu is a bit
incomplete. I can use it to add ports, but I need to add bridges as well.
I tried to implement a function similar to the add_port function to add
bridges, but the bridges do not show up on the OVS switches. The code is
included below:
from ryu.services.protocols.ovsdb import event as ovsdb_event
import uuid
def create_bridge(manager, system_id, bridge_name):
bridge_uuid = uuid.uuid4()
interface_uuid = uuid.uuid4()
port_uuid = uuid.uuid4()
def _create_bridge(tables, insert):
bridge = insert(tables['Bridge'], bridge_uuid)
setattr(bridge, 'name', bridge_name)
interface = insert(tables['Interface'], interface_uuid)
setattr(interface, 'name', bridge_name)
setattr(interface, 'type', 'internal')
port = insert(tables['Port'], port_uuid)
setattr(port, 'name', bridge_name)
port.interfaces = [interface]
bridge.ports = [port]
return interface_uuid, port_uuid, bridge_uuid
req = ovsdb_event.EventModifyRequest(system_id, _create_bridge)
return manager.send_request(req)
The result returned is as follows:
EventModifyReply<system_id=s1, status=success,
insert_uuids={UUID('8b70c13a-a31f-47a2-aee4-0980784bda16'):
UUID('673427e2-0ad1-40ae-a946-c5a506bc54b6'),
UUID('783af59e-118c-4c2e-ac21-8d8ac55624dd'):
UUID('1d400a21-a2f8-4bbb-aa7a-0f5186e9ce60'),
UUID('f156cb87-d57c-4c74-8706-d012c41ea0d0'):
UUID('44a526d7-820b-4396-b99f-0bf2195021f5')}, error_msg=None>
But no new bridges show up on my OVS switches. Any pointers on what's
missing, or am I doing something wrong?
Thanks in advance,
- Thomas
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