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# Copyright 2017 ZTE Corporation.
#
# 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.
import functools
import logging
from genericparser.pub.utils.toscaparsers.basemodel import BaseInfoModel
from genericparser.pub.utils.toscaparsers.const import SDC_SERVICE_METADATA_SECTIONS
from genericparser.pub.utils.toscaparsers.servicemodel import SdcServiceModel
logger = logging.getLogger(__name__)
SECTIONS = (NS_TYPE, NS_VNF_TYPE, NS_VL_TYPE, NS_PNF_TYPE, NS_NFP_TYPE, NS_VNFFG_TYPE) = \
('tosca.nodes.nfv.NS',
'tosca.nodes.nfv.VNF',
'tosca.nodes.nfv.NsVirtualLink',
'tosca.nodes.nfv.PNF',
'tosca.nodes.nfv.NFP',
'tosca.nodes.nfv.VNFFG')
NFV_NS_RELATIONSHIPS = [["tosca.relationships.nfv.VirtualLinksTo", "tosca.relationships.DependsOn"], []]
class NsdInfoModel(BaseInfoModel):
def __init__(self, path, params):
super(NsdInfoModel, self).__init__(path, params)
def parseModel(self, tosca):
metadata = self.buildMetadata(tosca)
self.model = {}
if self._is_etsi(metadata):
self.model = EtsiNsdInfoModel(tosca)
elif self._is_ecomp(metadata):
self.model = SdcServiceModel(tosca)
def _is_etsi(self, metadata):
NS_METADATA_MUST = ["nsd_invariant_id", "nsd_name", "nsd_file_structure_version", "nsd_designer", "nsd_release_date_time"]
return True if len([1 for key in NS_METADATA_MUST if key in metadata]) == len(NS_METADATA_MUST) else False
def _is_ecomp(self, metadata):
return True if len([1 for key in SDC_SERVICE_METADATA_SECTIONS if key in metadata]) == len(SDC_SERVICE_METADATA_SECTIONS) else False
class EtsiNsdInfoModel(BaseInfoModel):
def __init__(self, tosca):
super(EtsiNsdInfoModel, self).__init__(tosca=tosca)
def parseModel(self, tosca):
self.metadata = self.buildMetadata(tosca)
self.ns = self._build_ns(tosca)
self.inputs = self.buildInputs(tosca)
nodeTemplates = map(functools.partial(self.buildNode, tosca=tosca), tosca.nodetemplates)
types = tosca.topology_template.custom_defs
self.basepath = self.get_base_path(tosca)
self.vnfs = self._get_all_vnf(nodeTemplates, types)
self.pnfs = self._get_all_pnf(nodeTemplates, types)
self.vls = self._get_all_vl(nodeTemplates, types)
self.fps = self._get_all_fp(nodeTemplates, types)
self.vnffgs = self._get_all_vnffg(tosca.topology_template.groups, types)
self.ns_exposed = self._get_all_endpoint_exposed(tosca.topology_template)
self.nested_ns = self._get_all_nested_ns(nodeTemplates, types)
self.graph = self.get_deploy_graph(tosca, NFV_NS_RELATIONSHIPS)
def _get_all_vnf(self, nodeTemplates, node_types):
vnfs = []
for node in nodeTemplates:
if self.isNodeTypeX(node, node_types, NS_VNF_TYPE):
vnf = {}
vnf['vnf_id'] = node['name']
vnf['description'] = node['description']
vnf['properties'] = node['properties']
if not vnf['properties'].get('id', None):
vnf['properties']['id'] = vnf['properties'].get('descriptor_id', None)
vnf['dependencies'] = self._get_networks(node, node_types)
vnf['networks'] = self._get_networks(node, node_types)
vnfs.append(vnf)
return vnfs
def _get_all_pnf(self, nodeTemplates, node_types):
pnfs = []
for node in nodeTemplates:
if self.isNodeTypeX(node, node_types, NS_PNF_TYPE):
pnf = {}
pnf['pnf_id'] = node['name']
pnf['description'] = node['description']
pnf['properties'] = node['properties']
pnf['networks'] = self._get_networks(node, node_types)
pnfs.append(pnf)
return pnfs
def _get_all_vl(self, nodeTemplates, node_types):
vls = []
for node in nodeTemplates:
if self.isNodeTypeX(node, node_types, NS_VL_TYPE):
vl = dict()
vl['vl_id'] = node['name']
vl['description'] = node['description']
vl['properties'] = node['properties']
vls.append(vl)
return vls
def _get_all_fp(self, nodeTemplates, node_types):
fps = []
for node in nodeTemplates:
if self.isNodeTypeX(node, node_types, NS_NFP_TYPE):
fp = {}
fp['fp_id'] = node['name']
fp['description'] = node['description']
fp['properties'] = node['properties']
fp['forwarder_list'] = self._getForwarderList(node, nodeTemplates, node_types)
fps.append(fp)
return fps
def _getForwarderList(self, node, node_templates, node_types):
forwarderList = []
if 'requirements' in node:
for item in node['requirements']:
for key, value in item.items():
if key == 'forwarder':
tmpnode = self.get_node_by_req(node_templates, value)
type = 'pnf' if self.isNodeTypeX(tmpnode, node_types, NS_PNF_TYPE) else 'vnf'
req_node_name = self.get_requirement_node_name(value)
if isinstance(value, dict) and 'capability' in value:
forwarderList.append(
{"type": type, "node_name": req_node_name, "capability": value['capability']})
else:
forwarderList.append({"type": type, "node_name": req_node_name, "capability": ""})
return forwarderList
def _get_all_vnffg(self, groups, group_types):
vnffgs = []
for group in groups:
if self.isGroupTypeX(group, group_types, NS_VNFFG_TYPE):
vnffg = {}
vnffg['vnffg_id'] = group.name
vnffg['description'] = group.description
if 'properties' in group.tpl:
vnffg['properties'] = group.tpl['properties']
vnffg['members'] = group.members
vnffgs.append(vnffg)
return vnffgs
def _get_all_endpoint_exposed(self, topo_tpl):
if 'substitution_mappings' in topo_tpl.tpl:
external_cps = self._get_external_cps(topo_tpl.tpl['substitution_mappings'])
forward_cps = self._get_forward_cps(topo_tpl.tpl['substitution_mappings'])
return {"external_cps": external_cps, "forward_cps": forward_cps}
return {}
def _get_external_cps(self, subs_mappings):
external_cps = []
if 'requirements' in subs_mappings:
for key, value in subs_mappings['requirements'].items():
if isinstance(value, list) and len(value) > 0:
external_cps.append({"key_name": key, "cpd_id": value[0]})
else:
external_cps.append({"key_name": key, "cpd_id": value})
return external_cps
def _get_forward_cps(self, subs_mappings):
forward_cps = []
if 'capabilities' in subs_mappings:
for key, value in subs_mappings['capabilities'].items():
if isinstance(value, list) and len(value) > 0:
forward_cps.append({"key_name": key, "cpd_id": value[0]})
else:
forward_cps.append({"key_name": key, "cpd_id": value})
return forward_cps
def _get_all_nested_ns(self, nodes, node_types):
nss = []
for node in nodes:
if self.isNodeTypeX(node, node_types, NS_TYPE):
ns = {}
ns['ns_id'] = node['name']
ns['description'] = node['description']
ns['properties'] = node['properties']
ns['networks'] = self._get_networks(node, node_types)
nss.append(ns)
return nss
def _get_networks(self, node, node_types):
rets = []
if 'requirements' in node and (self.isNodeTypeX(node, node_types, NS_TYPE) or self.isNodeTypeX(node, node_types, NS_VNF_TYPE)):
for item in node['requirements']:
for key, value in item.items():
rets.append({"key_name": key, "vl_id": self.get_requirement_node_name(value)})
return rets
def _build_ns(self, tosca):
ns = self.get_substitution_mappings(tosca)
properties = ns.get("properties", {})
metadata = ns.get("metadata", {})
if properties.get("descriptor_id", "") == "":
descriptor_id = metadata.get("nsd_id", "")
properties["descriptor_id"] = descriptor_id
if properties.get("verison", "") == "":
version = metadata.get("nsd_file_structure_version", "")
properties["verison"] = version
if properties.get("designer", "") == "":
author = metadata.get("nsd_designer", "")
properties["designer"] = author
if properties.get("name", "") == "":
template_name = metadata.get("nsd_name", "")
properties["name"] = template_name
if properties.get("invariant_id", "") == "":
nsd_invariant_id = metadata.get("nsd_invariant_id", "")
properties["invariant_id"] = nsd_invariant_id
return ns
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