Add access_count incrementer to DraftRetrieveApi

Changes to be committed:
	modified:   biocompute/apis.py
	modified:   biocompute/services.py
	modified:   prefix/services.py

biocompute/apis.py

@@ -14,11 +14,10 @@
 from rest_framework.response import Response
 from tests.fixtures.example_bco import BCO_000001
 from config.services import legacy_api_converter, response_constructor
-from biocompute.services import BcoDraftSerializer
+from biocompute.services import BcoDraftSerializer, bco_counter_increment
 from biocompute.selectors import retrieve_bco
 from prefix.selectors import user_can_draft
 
-
 hostname = settings.PUBLIC_HOSTNAME
 
 BCO_DRAFT_SCHEMA = openapi.Schema(
@@ -171,13 +170,16 @@ class DraftRetrieveApi(APIView):
 
     API View to Retrieve a Draft Object
 
-    This view allows authenticated users to retrieve the contents of a specific draft object
-    identified by its BioCompute Object (BCO) accession number. The operation ensures that
-    only users with appropriate permissions can access the draft contents.
+    This view allows authenticated users to retrieve the contents of a specific
+    draft object identified by its BioCompute Object (BCO) accession number.
+    The operation ensures that only users with appropriate permissions can
+    access the draft contents. Upo successfull retrieval of object the
+    `access_count` is for this object is incremented.
 
     Parameters:
-    - bco_accession (str): A string parameter passed in the URL path that uniquely identifies
-      the draft object to be retrieved.
+    - bco_accession (str):
+        A string parameter passed in the URL path that uniquely identifies the
+        draft object to be retrieved.
     """
 
     @swagger_auto_schema(
@@ -210,4 +212,5 @@ def get(self, request, bco_accession):
                 data={"message": f"User, {requester}, does not have draft permissions"\
                         + f" for {bco_accession}."})
         else:
+            bco_counter_increment(bco_instance)
             return Response(status=status.HTTP_200_OK, data=bco_instance.contents)

biocompute/services.py

@@ -1,13 +1,14 @@
 #!/usr/bin/env python3
 # biocopmute/services.py
 
+from biocompute.models import Bco
 from django.conf import settings
+from django.contrib.auth.models import User
 from django.db import transaction
+from django.db.models import F
 from django.utils import timezone
-from biocompute.models import Bco
 from prefix.models import Prefix
 from prefix.services import prefix_counter_increment
-from django.contrib.auth.models import User
 from rest_framework import serializers
 
 """BioCompute Services
@@ -176,3 +177,17 @@ def create_bco_id(prefix_instance: Prefix) -> str:
             unique_id_found = True
 
     return bco_id
+
+def bco_counter_increment(bco_instance: Bco) -> int:
+    """BCO Counter Increment 
+    
+    Simple incrementing function.
+    Counter for BCO object_id asignment.
+    """
+
+    bco_instance.access_count = F('access_count') + 1
+    bco_instance.save()
+
+    bco_instance.refresh_from_db()
+
+    return bco_instance.access_count

prefix/services.py

@@ -1,19 +1,15 @@
 #!/usr/bin/env python3
 # prefix/services.py
 
-import re
-from urllib.parse import urlparse
 from django.conf import settings
-from django.contrib.auth.models import Permission
+from django.contrib.auth.models import User, Permission
 from django.contrib.contenttypes.models import ContentType
-from django.db import utils 
+from django.db import transaction, utils 
+from django.db.models import F
 from django.utils import timezone
 from prefix.models import Prefix
-from django.db import transaction
-from django.contrib.auth.models import User
-from django.db.models import F
+from prefix.selectors import get_prefix_object
 from rest_framework import serializers
-from prefix.selectors import get_prefix_permissions, get_prefix_object
 
 """Prefix Services