2 Copyright (c) 2015 SONATA-NFV and Paderborn University
5 Licensed under the Apache License, Version 2.0 (the "License");
6 you may not use this file except in compliance with the License.
7 You may obtain a copy of the License at
9 http://www.apache.org/licenses/LICENSE-2.0
11 Unless required by applicable law or agreed to in writing, software
12 distributed under the License is distributed on an "AS IS" BASIS,
13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 See the License for the specific language governing permissions and
15 limitations under the License.
17 Neither the name of the SONATA-NFV [, ANY ADDITIONAL AFFILIATION]
18 nor the names of its contributors may be used to endorse or promote
19 products derived from this software without specific prior written
22 This work has been performed in the framework of the SONATA project,
23 funded by the European Commission under Grant number 671517 through
24 the Horizon 2020 and 5G-PPP programmes. The authors would like to
25 acknowledge the contributions of their colleagues of the SONATA
26 partner consortium (www.sonata-nfv.eu).
30 Distributed Cloud Emulator (dcemulator)
31 Networking and monitoring functions
32 (c) 2015 by Steven Van Rossem <steven.vanrossem@intec.ugent.be>
36 from flask_restful
import Resource
37 from flask
import request
41 logging
.basicConfig(level
=logging
.INFO
)
43 CORS_HEADER
= {'Access-Control-Allow-Origin': '*'}
45 # the global net is set from the topology file, and connected via connectDCNetwork function in rest_api_endpoint.py
49 class NetworkAction(Resource
):
51 Add or remove chains between VNFs. These chain links are implemented as flow entries in the networks' SDN switches.
52 :param vnf_src_name: VNF name of the source of the link
53 :param vnf_dst_name: VNF name of the destination of the link
54 :param vnf_src_interface: VNF interface name of the source of the link
55 :param vnf_dst_interface: VNF interface name of the destination of the link
56 :param weight: weight of the link (can be useful for routing calculations)
57 :param match: OpenFlow match format of the flow entry
58 :param bidirectional: boolean value if the link needs to be implemented from src to dst and back
59 :param cookie: cookie value, identifier of the flow entry to be installed.
60 :param priority: integer indicating the priority of the flow entry
61 :param skip_vlan_tag: boolean to indicate whether a new vlan tag should be created for this chain
62 :param monitor: boolean to indicate whether a new vlan tag should be created for this chain
63 :param monitor_placement: 'tx'=place the monitoring flowrule at the beginning of the chain, 'rx'=place at the end of the chain
64 :return: message string indicating if the chain action is succesful or not
70 logging
.debug("REST CALL: network chain add")
72 return self
._NetworkAction
(command
=command
)
75 logging
.debug("REST CALL: network chain remove")
77 return self
._NetworkAction
(command
=command
)
79 def _NetworkAction(self
, command
=None):
80 # call DCNetwork method, not really datacenter specific API for now...
81 # no check if vnfs are really connected to this datacenter...
84 logging
.debug("json: {}".format(request
.json
))
85 logging
.debug("args: {}".format(request
.args
))
87 # when called directly with curl via REST
91 # check if json data is a dict
92 elif type(data
) is not dict:
93 data
= json
.loads(request
.json
)
95 logging
.info("data: {}".format(data
))
96 vnf_src_name
= data
.get("vnf_src_name")
97 vnf_dst_name
= data
.get("vnf_dst_name")
98 vnf_src_interface
= data
.get("vnf_src_interface")
99 vnf_dst_interface
= data
.get("vnf_dst_interface")
100 weight
= data
.get("weight")
101 match
= data
.get("match")
102 bidirectional
= data
.get("bidirectional")
103 cookie
= data
.get("cookie")
104 priority
= data
.get("priority")
105 skip_vlan_tag
= data
.get("skip_vlan_tag")
106 monitor
= data
.get("monitor")
107 monitor_placement
= data
.get("monitor_placement")
110 vnf_src_name
, vnf_dst_name
,
111 vnf_src_interface
=vnf_src_interface
,
112 vnf_dst_interface
=vnf_dst_interface
,
116 bidirectional
=bidirectional
,
119 skip_vlan_tag
=skip_vlan_tag
,
121 monitor_placement
=monitor_placement
)
122 # return setChain response
123 return str(c
), 200, CORS_HEADER
124 except Exception as ex
:
125 logging
.exception("API error.")
126 return ex
.message
, 500, CORS_HEADER
129 class DrawD3jsgraph(Resource
):
138 node_attr
= networkx
.get_node_attributes(net
.DCNetwork_graph
, 'type')
139 for node_name
in net
.DCNetwork_graph
.nodes():
140 nodes2
.append(node_name
)
141 node_index
= nodes2
.index(node_name
)
142 type = node_attr
[node_name
]
143 node_dict
= {"name":node_name
,"group":type}
144 nodes
.append(node_dict
)
146 # add links between other DCs
147 for node1_name
in net
.DCNetwork_graph
.nodes():
148 node1_index
= nodes2
.index(node1_name
)
149 for node2_name
in net
.DCNetwork_graph
.neighbors(node1_name
):
150 node2_index
= nodes2
.index(node2_name
)
151 edge_dict
= {"source": node1_index
, "target": node2_index
, "value": 10}
152 links
.append(edge_dict
)
154 json
= {"nodes":nodes
, "links":links
}
155 return json
, 200, CORS_HEADER