+"""
+Copyright (c) 2015 SONATA-NFV and Paderborn University
+ALL RIGHTS RESERVED.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+Neither the name of the SONATA-NFV [, ANY ADDITIONAL AFFILIATION]
+nor the names of its contributors may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+This work has been performed in the framework of the SONATA project,
+funded by the European Commission under Grant number 671517 through
+the Horizon 2020 and 5G-PPP programmes. The authors would like to
+acknowledge the contributions of their colleagues of the SONATA
+partner consortium (www.sonata-nfv.eu).
+"""
+
+"""
+Distributed Cloud Emulator (dcemulator)
+Networking and monitoring functions
+(c) 2015 by Steven Van Rossem <steven.vanrossem@intec.ugent.be>
+"""
+
import logging
from flask_restful import Resource
from flask import request
"""
global net
- def put(self, vnf_name, vnf_interface, metric):
+ def put(self, vnf_name, vnf_interface=None, metric='tx_packets', cookie=None):
logging.debug("REST CALL: start monitor VNF interface")
try:
- c = net.monitor_agent.setup_metric(vnf_name, vnf_interface, metric)
+ if cookie:
+ c = net.monitor_agent.setup_flow(vnf_name, vnf_interface, metric, cookie)
+ else:
+ c = net.monitor_agent.setup_metric(vnf_name, vnf_interface, metric)
# return monitor message response
return str(c), 200
except Exception as ex:
logging.exception("API error.")
return ex.message, 500
- def delete(self, vnf_name, vnf_interface, metric):
+ def delete(self, vnf_name, vnf_interface=None, metric='tx_packets', cookie=None):
logging.debug("REST CALL: stop monitor VNF interface")
try:
- c = net.monitor_agent.stop_metric(vnf_name, vnf_interface, metric)
+ if cookie:
+ c = net.monitor_agent.stop_flow(vnf_name, vnf_interface, metric, cookie)
+ else:
+ c = net.monitor_agent.stop_metric(vnf_name, vnf_interface, metric)
# return monitor message response
return str(c), 200
except Exception as ex:
"""
global net
- def put(self, vnf_name, vnf_interface, metric, cookie):
+ def put(self, vnf_name, vnf_interface=None, metric='tx_packets', cookie=0):
logging.debug("REST CALL: start monitor VNF interface")
try:
c = net.monitor_agent.setup_flow(vnf_name, vnf_interface, metric, cookie)
logging.exception("API error.")
return ex.message, 500
- def delete(self, vnf_name, vnf_interface, metric, cookie):
+ def delete(self, vnf_name, vnf_interface=None, metric='tx_packets', cookie=0):
logging.debug("REST CALL: stop monitor VNF interface")
try:
c = net.monitor_agent.stop_flow(vnf_name, vnf_interface, metric, cookie)
# return monitor message response
return str(c), 200
+ except Exception as ex:
+ logging.exception("API error.")
+ return ex.message, 500
+
+class MonitorLinkAction(Resource):
+ """
+ Add or remove chains between VNFs. These chain links are implemented as flow entries in the networks' SDN switches.
+ :param vnf_src_name: VNF name of the source of the link
+ :param vnf_dst_name: VNF name of the destination of the link
+ :param vnf_src_interface: VNF interface name of the source of the link
+ :param vnf_dst_interface: VNF interface name of the destination of the link
+ :param weight: weight of the link (can be useful for routing calculations)
+ :param match: OpenFlow match format of the flow entry
+ :param bidirectional: boolean value if the link needs to be implemented from src to dst and back
+ :param cookie: cookie value, identifier of the flow entry to be installed.
+ :param priority: integer indicating the priority of the flow entry
+ :param skip_vlan_tag: boolean to indicate whether a new vlan tag should be created for this chain
+ :param monitor: boolean to indicate whether a new vlan tag should be created for this chain
+ :param monitor_placement: 'tx'=place the monitoring flowrule at the beginning of the chain, 'rx'=place at the end of the chain
+ :param metric: tx_packet_rate, tx_byte_rate, rx_packet_rate, rx_byte_rate
+ :return: message string indicating if the chain action is succesful or not
+ """
+
+ # the global net is set from the topology file, and connected via connectDCNetwork function in rest_api_endpoint.py
+ global net
+
+ def put(self, vnf_src_name, vnf_dst_name):
+ logging.debug("REST CALL: monitor link flow add")
+
+ try:
+ command = 'add-flow'
+ return self._MonitorLinkAction(vnf_src_name, vnf_dst_name, command=command)
+ except Exception as ex:
+ logging.exception("API error.")
+ return ex.message, 500
+
+ def delete(self, vnf_src_name, vnf_dst_name):
+ logging.debug("REST CALL: monitor link flow remove")
+
+ try:
+ command = 'del-flows'
+ return self._MonitorLinkAction(vnf_src_name, vnf_dst_name, command=command)
+ except Exception as ex:
+ logging.exception("API error.")
+ return ex.message, 500
+
+ def _MonitorLinkAction(self, vnf_src_name, vnf_dst_name, command=None):
+ # call DCNetwork method, not really datacenter specific API for now...
+ # no check if vnfs are really connected to this datacenter...
+ try:
+ # check if json data is a dict
+ data = request.json
+ if data is None:
+ data = {}
+ elif type(data) is not dict:
+ data = json.loads(request.json)
+
+ vnf_src_interface = data.get("vnf_src_interface")
+ vnf_dst_interface = data.get("vnf_dst_interface")
+ weight = data.get("weight")
+ match = data.get("match")
+ bidirectional = data.get("bidirectional")
+ cookie = data.get("cookie")
+ priority = data.get("priority")
+ skip_vlan_tag = data.get("skip_vlan_tag")
+ monitor = data.get("monitor")
+ monitor_placement = data.get("monitor_placement")
+
+ #first install monitor flow
+ c1 = net.setChain(
+ vnf_src_name, vnf_dst_name,
+ vnf_src_interface=vnf_src_interface,
+ vnf_dst_interface=vnf_dst_interface,
+ cmd=command,
+ weight=weight,
+ match=match,
+ bidirectional=bidirectional,
+ cookie=cookie,
+ priority=priority,
+ skip_vlan_tag=skip_vlan_tag,
+ monitor=monitor,
+ monitor_placement=monitor_placement)
+
+ #then export monitor flow
+ metric = data.get("metric")
+ if 'rx' in monitor_placement:
+ vnf_name = vnf_dst_name
+ vnf_interface = vnf_dst_interface
+ elif 'tx' in monitor_placement:
+ vnf_name = vnf_src_name
+ vnf_interface = vnf_src_interface
+
+ c2 = net.monitor_agent.setup_flow(vnf_name, vnf_interface, metric, cookie)
+
+ # return setChain response
+ return (str(c1) + " " + str(c2)), 200
except Exception as ex:
logging.exception("API error.")
return ex.message, 500
\ No newline at end of file