1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
'''
This is middle module
'''
# Copyright (c) 2017-2018 Wind River Systems, Inc.
#
# 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 uuid
from django.conf import settings
from onaplogging.mdcContext import MDC
FORWARDED_FOR_FIELDS = ["HTTP_X_FORWARDED_FOR", "HTTP_X_FORWARDED_HOST",
"HTTP_X_FORWARDED_SERVER"]
class LogContextMiddleware:
'''
log context middleware
'''
def _get_last_ip(self, request):
'''
the last IP behind multiple proxies, if no exist proxies
get local host ip.
'''
local_ip = ""
try:
for field in FORWARDED_FOR_FIELDS:
if field in request.META:
if ',' in request.META[field]:
parts = request.META[field].split(',')
local_ip = parts[-1].strip().split(":")[0]
else:
local_ip = request.META[field].split(":")[0]
if local_ip == "":
local_ip = request.META.get("HTTP_HOST").split(":")[0]
except Exception:
pass
return local_ip
def process_request(self, request):
'''
process request
'''
# fetch propageted Id from other component. if do not fetch id,
# generate one.
reqeust_id = request.META.get("HTTP_X_TRANSACTIONID", None)
if reqeust_id is None:
reqeust_id = str(uuid.uuid3(uuid.NAMESPACE_URL, settings.MULTIVIM_VERSION))
MDC.put("requestID", reqeust_id)
# generate the reqeust id
invocation_id = str(uuid.uuid4())
MDC.put("invocationID", invocation_id)
MDC.put("serviceName", settings.MULTIVIM_VERSION)
MDC.put("serviceIP", self._get_last_ip(request))
return None
def process_response(self, response):
'''
process response
'''
MDC.clear()
return response
|