def get_rules(src_switch, src_port, src_vlan, dst_switch, dst_port, dst_vlan,
bandwidth, transit_vlan, flowid, cookie, flowpath, meter_id,
output_action, **k):
# TODO: Rule creation should migrate closer to path creation .. to do as part of TE / Storm refactor
# e.g. assuming a refactor of TE into Storm, and possibly more directly attached to the right storm topology
# vs a separate topology, then this logic should be closer to path creation
# TODO: We should leverage the sequence number to ensure we install / remove flows in the right order
# e.g. for install, go from the end to beginning; for remove, go in opposite direction.
nodes = flowpath.get("path")
if not nodes:
return []
flows = []
flows.append(message_utils.build_ingress_flow(
nodes, src_switch, src_port, src_vlan, bandwidth,
transit_vlan, flowid, output_action, cookie, meter_id))
flows.extend(message_utils.build_intermediate_flows(
_['switch_id'], _['port_no'], __['port_no'], transit_vlan, flowid,
cookie) for _, __ in zip(nodes[1:-1], nodes[2:]))
flows.append(message_utils.build_egress_flow(
nodes, dst_switch, dst_port, dst_vlan,
transit_vlan, flowid, output_action, cookie))
return flows
def get_rules(src_switch, src_port, src_vlan, dst_switch, dst_port, dst_vlan,
bandwidth, transit_vlan, flow_id, cookie, flow_path, meter_id,
output_action):
nodes = flow_path.get("path")
flows = []
if nodes:
flows.append(
message_utils.build_ingress_flow(nodes, src_switch, src_port,
src_vlan, bandwidth, transit_vlan,
flow_id, output_action, cookie,
meter_id))
transit_flow_count = (len(nodes) - 2) / 2
i = 1
while i <= transit_flow_count:
flows.append(
message_utils.build_intermediate_flows(nodes[i]['switch_id'],
nodes[i]['port_no'],
nodes[i + 1]['port_no'],
transit_vlan, flow_id,
cookie))
i += 2
flows.append(
message_utils.build_egress_flow(nodes, dst_switch, dst_port,
dst_vlan, transit_vlan, flow_id,
output_action, cookie))
return flows
def get_rules(src_switch, src_port, src_vlan, dst_switch, dst_port, dst_vlan,
bandwidth, transit_vlan, flowid, cookie, flowpath, meter_id,
output_action, **k):
nodes = flowpath.get("path")
if not nodes:
return []
flows = []
flows.append(
message_utils.build_ingress_flow(nodes, src_switch, src_port, src_vlan,
bandwidth, transit_vlan, flowid,
output_action, cookie, meter_id))
flows.extend(
message_utils.build_intermediate_flows(
_['switch_id'], _['port_no'], __['port_no'], transit_vlan, flowid,
cookie) for _, __ in zip(nodes[1:-1], nodes[2:]))
flows.append(
message_utils.build_egress_flow(nodes, dst_switch, dst_port, dst_vlan,
transit_vlan, flowid, output_action,
cookie))
return flows
def get_rules(src_switch, src_port, src_vlan, dst_switch, dst_port, dst_vlan,
bandwidth, transit_vlan, flowid, cookie, flowpath, meter_id,
output_action, **k):
# TODO: Rule creation should migrate closer to path creation .. to do as part of TE / Storm refactor
# e.g. assuming a refactor of TE into Storm, and possibly more directly attached to the right storm topology
# vs a separate topology, then this logic should be closer to path creation
# TODO: We should leverage the sequence number to ensure we install / remove flows in the right order
# e.g. for install, go from the end to beginning; for remove, go in opposite direction.
nodes = flowpath.get("path")
if not nodes:
return []
flows = []
flows.append(
message_utils.build_ingress_flow(nodes, src_switch, src_port, src_vlan,
bandwidth, transit_vlan, flowid,
output_action, cookie, meter_id))
for i in range(1, len(nodes) - 1, 2):
src = nodes[i]
dst = nodes[i + 1]
if src['switch_id'] != dst['switch_id']:
msg = 'Found non-paired node in the flowpath: {}'.format(flowpath)
logger.error(msg)
raise ValueError(msg)
segment_cookie = src.get('cookie', cookie)
flows.append(
message_utils.build_intermediate_flows(src['switch_id'],
src['port_no'],
dst['port_no'],
transit_vlan, flowid,
segment_cookie))
# Egress flow has cookie of the last segment.
egress_flow_cookie = cookie
if nodes:
egress_flow_cookie = nodes[-1].get('cookie', cookie)
flows.append(
message_utils.build_egress_flow(nodes, dst_switch, dst_port, dst_vlan,
transit_vlan, flowid, output_action,
egress_flow_cookie))
return flows