Fix bug 1613 - fixing build to allow python3 -m build
[osm/IM.git] / osm_im / validation.py
1 # -*- coding: utf-8 -*-
2
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
6 #
7 # http://www.apache.org/licenses/LICENSE-2.0
8 #
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
12 # implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
15
16 import yaml
17 import importlib
18 from osm_im.vnfd import vnfd as vnfd_im
19 from osm_im.nsd import nsd as nsd_im
20 from osm_im.nst import nst as nst_im
21 etsi_nfv_vnfd = importlib.import_module("osm_im.etsi-nfv-vnfd")
22 etsi_nfv_nsd = importlib.import_module("osm_im.etsi-nfv-nsd")
23 from pyangbind.lib.serialise import pybindJSONDecoder
24 import pyangbind.lib.pybindJSON as pybindJSON
25
26 class ValidationException(Exception):
27 pass
28
29 class Validation:
30
31 def pyangbind_validation(self, item, data, force=False):
32 '''
33 item: vnfd, nst, nsd
34 data: dict object loaded from the descriptor file
35 force: True to skip unknown fields in the descriptor
36 '''
37 if item == "vnfd":
38 myobj = vnfd_im()
39 elif item == "nsd":
40 myobj = nsd_im()
41 elif item == "nst":
42 myobj = nst_im()
43 elif item == "etsi_nfv_vnfd":
44 myobj = etsi_nfv_vnfd.etsi_nfv_vnfd()
45 elif item == "etsi_nfv_nsd":
46 myobj = etsi_nfv_nsd.etsi_nfv_nsd()
47 else:
48 raise ValidationException("Not possible to validate '{}' item".format(item))
49
50 try:
51 pybindJSONDecoder.load_ietf_json(data, None, None, obj=myobj,
52 path_helper=True, skip_unknown=force)
53 out = pybindJSON.dumps(myobj, mode="ietf")
54 desc_out = yaml.safe_load(out)
55 return desc_out
56 except Exception as e:
57 raise ValidationException("Error in pyangbind validation: {}".format(str(e)))
58
59 def yaml_validation(self, descriptor):
60 try:
61 data = yaml.safe_load(descriptor)
62 except Exception as e:
63 raise ValidationException("Error in YAML validation. Not a proper YAML file: {}".format(e))
64 if 'vnfd:vnfd-catalog' in data or 'vnfd-catalog' in data:
65 item = "vnfd"
66 elif 'nsd:nsd-catalog' in data or 'nsd-catalog' in data:
67 item = "nsd"
68 elif 'nst' in data:
69 item = "nst"
70 elif 'vnfd' in data:
71 item = "etsi_nfv_vnfd"
72 elif 'nsd' in data:
73 item = "etsi_nfv_nsd"
74 else:
75 raise ValidationException("Error in YAML validation. Not possible to determine the type of descriptor in the first line. Expected values: vnfd:vnfd-catalog, vnfd-catalog, nsd:nsd-catalog, nsd-catalog, nst")
76
77 return item, data
78
79 def descriptor_validation(self, descriptor):
80 item, data = self.yaml_validation(descriptor)
81 self.pyangbind_validation(item, data)
82