Add common functions for vnflcm

Change-Id: I4b97a1a2cf19f5765668b67912c9c6cbedfeca26
Issue-ID: VFC-1306
Signed-off-by: fujinhua <fu.jinhua@zte.com.cn>

1 files changed, 90 insertions, 0 deletions

diff --git a/lcm/lcm/nf/views/common.py b/lcm/lcm/nf/views/common.py
new file mode 100644
index 00000000..1be6a5de
--- /dev/null
+++ b/lcm/lcm/nf/views/common.py
@@ -0,0 +1,90 @@
+# Copyright 2019 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 traceback
+import logging
+
+from rest_framework import status
+from rest_framework.response import Response
+
+from lcm.pub.exceptions import NFLCMException
+from lcm.pub.exceptions import NFLCMExceptionPreconditionFailed
+from lcm.pub.exceptions import NFLCMExceptionBadRequest
+from lcm.pub.exceptions import NFLCMExceptionNotFound
+from lcm.pub.exceptions import NFLCMExceptionConflict
+from lcm.pub.exceptions import NFLCMExceptionSeeOther
+
+logger = logging.getLogger(__name__)
+
+
+def make_error_resp(status, detail):
+    return Response(
+        data={
+            'status': status,
+            'detail': detail
+        },
+        status=status
+    )
+
+
+def view_safe_call_with_log(logger):
+    def view_safe_call(func):
+        def wrapper(*args, **kwargs):
+            try:
+                return func(*args, **kwargs)
+            except NFLCMExceptionSeeOther as e:
+                logger.error(e.message)
+                resp = Response(status=status.HTTP_303_SEE_OTHER)
+                resp["Location"] = ""
+                # resp["Location"] = "subscriptions/%s" % e.id
+                return resp
+            except NFLCMExceptionNotFound as e:
+                logger.error(e.message)
+                return make_error_resp(
+                    detail=e.message,
+                    status=status.HTTP_404_NOT_FOUND
+                )
+            except NFLCMExceptionBadRequest as e:
+                logger.error(e.message)
+                return make_error_resp(
+                    detail=e.message,
+                    status=status.HTTP_400_BAD_REQUEST
+                )
+            except NFLCMExceptionConflict as e:
+                logger.error(e.message)
+                return make_error_resp(
+                    detail=e.message,
+                    status=status.HTTP_409_CONFLICT
+                )
+            except NFLCMExceptionPreconditionFailed as e:
+                logger.error(e.message)
+                return make_error_resp(
+                    detail=e.message,
+                    status=status.HTTP_412_PRECONDITION_FAILED
+                )
+            except NFLCMException as e:
+                logger.error(e.message)
+                return make_error_resp(
+                    detail=e.message,
+                    status=status.HTTP_500_INTERNAL_SERVER_ERROR
+                )
+            except Exception as e:
+                logger.error(e.message)
+                logger.error(traceback.format_exc())
+                return make_error_resp(
+                    detail='Unexpected exception',
+                    status=status.HTTP_500_INTERNAL_SERVER_ERROR
+                )
+        return wrapper
+    return view_safe_call