def get_nexusvlan_binding(vlan_id, switch_ip):
"""Lists a vlan and switch binding."""
LOG.debug(_("get_nexusvlan_binding() called"))
session = db.get_session()
filters = dict(vlan_id=vlan_id, switch_ip=switch_ip)
bindings = (session.query(
nexus_models_v2.NexusPortBinding).filter_by(**filters).all())
if not bindings:
raise c_exc.NexusPortBindingNotFound(**filters)
return bindings
def get_nexussvi_bindings():
"""Lists nexus svi bindings."""
LOG.debug(_("get_nexussvi_bindings() called"))
session = db.get_session()
filters = {'port_id': 'router'}
bindings = (session.query(
nexus_models_v2.NexusPortBinding).filter_by(**filters).all())
if not bindings:
raise c_exc.NexusPortBindingNotFound(**filters)
return bindings
def get_nexusvm_binding(vlan_id, instance_id):
"""Lists nexusvm bindings."""
LOG.debug(_("get_nexusvm_binding() called"))
session = db.get_session()
filters = dict(instance_id=instance_id, vlan_id=vlan_id)
binding = (session.query(
nexus_models_v2.NexusPortBinding).filter_by(**filters).first())
if not binding:
raise c_exc.NexusPortBindingNotFound(**filters)
return binding
def update_nexusport_binding(port_id, new_vlan_id):
"""Updates nexusport binding."""
LOG.debug(_("update_nexusport_binding called"))
session = db.get_session()
try:
binding = (session.query(
nexus_models_v2.NexusPortBinding).filter_by(port_id=port_id).one())
if new_vlan_id:
binding["vlan_id"] = new_vlan_id
session.merge(binding)
session.flush()
return binding
except exc.NoResultFound:
raise c_exc.NexusPortBindingNotFound(port_id=port_id)
def get_nexusport_binding(port_id, vlan_id, switch_ip, instance_id):
"""Lists a nexusport binding."""
LOG.debug(_("get_nexusport_binding() called"))
session = db.get_session()
filters = dict(port_id=port_id,
vlan_id=vlan_id,
switch_ip=switch_ip,
instance_id=instance_id)
bindings = (session.query(
nexus_models_v2.NexusPortBinding).filter_by(**filters).all())
if not bindings:
raise c_exc.NexusPortBindingNotFound(**filters)
return bindings
def _lookup_nexus_bindings(query_type, session=None, **bfilter):
"""Look up 'query_type' Nexus bindings matching the filter.
:param query_type: 'all', 'one' or 'first'
:param session: db session
:param bfilter: filter for bindings query
:return: bindings if query gave a result, else
raise NexusPortBindingNotFound.
"""
if session is None:
session = db.get_session()
query_method = getattr(
session.query(nexus_models_v2.NexusPortBinding).filter_by(**bfilter),
query_type)
try:
bindings = query_method()
if bindings:
return bindings
except sa_exc.NoResultFound:
pass
raise c_exc.NexusPortBindingNotFound(**bfilter)