Add vfc-nslcm log integration config

Change-Id: I3b78eed809916415833aaef03d68c6ba597f64e1
Issue-ID: VFC-839
Signed-off-by: ying.yunlong <ying.yunlong@zte.com.cn>

1 files changed, 60 insertions, 0 deletions

diff --git a/lcm/middleware.py b/lcm/middleware.py
new file mode 100644
index 00000000..7bf6868f
--- /dev/null
+++ b/lcm/middleware.py
@@ -0,0 +1,60 @@
+# Copyright (c) 2017-2018 ZTE, 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.
+
+import uuid
+from onaplogging.mdcContext import MDC
+
+from lcm.pub.config.config import FORWARDED_FOR_FIELDS, SERVICE_NAME
+
+
+class LogContextMiddleware(object):
+    #  the last IP behind multiple proxies,  if no exist proxies
+    #  get local host ip.
+    def _getLastIp(self, request):
+
+        ip = ""
+        try:
+            for field in FORWARDED_FOR_FIELDS:
+                if field in request.META:
+                    if ',' in request.META[field]:
+                        parts = request.META[field].split(',')
+                        ip = parts[-1].strip().split(":")[0]
+                    else:
+                        ip = request.META[field].split(":")[0]
+
+            if ip == "":
+                ip = request.META.get("HTTP_HOST").split(":")[0]
+
+        except Exception:
+            pass
+
+        return ip
+
+    def process_request(self, request):
+        # Fetch TRANSACTIONID Id and pass to plugin server
+        ReqeustID = request.META.get("HTTP_X_TRANSACTIONID", None)
+        if ReqeustID is None:
+            ReqeustID = uuid.uuid3(uuid.NAMESPACE_URL, SERVICE_NAME)
+            request.META["HTTP_X_TRANSACTIONID"] = ReqeustID
+        MDC.put("requestID", ReqeustID)
+        # generate the unique  id
+        InovocationID = uuid.uuid3(uuid.NAMESPACE_DNS, SERVICE_NAME)
+        MDC.put("invocationID", InovocationID)
+        MDC.put("serviceName", SERVICE_NAME)
+        # access ip
+        MDC.put("serviceIP", self._getLastIp(request))
+
+        return None
+
+    def process_response(self, request, response):
+        MDC.clear()
+        return response