Rebase. Unit Tests Pass (#413)

Author: nhsdevws

delta_backend/src/common/mappings.py

@@ -0,0 +1,27 @@
+""" 
+    Enums for event names, operations, and action flags. 
+    
+    # case            eventName operation actionFlag
+    ----------------- --------- --------- ----------
+    create            INSERT    CREATE    NEW
+    update            MODIFY    UPDATE    UPDATE
+    logical delete    MODIFY    DELETE    DELETE
+    physical delete   REMOVE    REMOVE    N/A
+"""
+
+class EventName():
+    CREATE = "INSERT"
+    UPDATE = "MODIFY"
+    DELETE_LOGICAL = "MODIFY"
+    DELETE_PHYSICAL = "REMOVE"
+
+class Operation():
+    CREATE = "CREATE"
+    UPDATE = "UPDATE"
+    DELETE_LOGICAL = "DELETE"
+    DELETE_PHYSICAL = "REMOVE"
+
+class ActionFlag():
+    CREATE = "NEW"
+    UPDATE = "UPDATE"
+    DELETE_LOGICAL = "DELETE"

delta_backend/src/delta.py

@@ -8,6 +8,7 @@
 from botocore.exceptions import ClientError
 from log_firehose import FirehoseLogger
 from Converter import Converter
+from common.mappings import ActionFlag, Operation, EventName
 
 failure_queue_url = os.environ["AWS_SQS_QUEUE_URL"]
 delta_table_name = os.environ["DELTA_TABLE_NAME"]
@@ -37,6 +38,7 @@ def get_vaccine_type(patientsk) -> str:
 
 
 def handler(event, context):
+    ret = True
     logger.info("Starting Delta Handler")
     log_data = dict()
     firehose_log = dict()
@@ -61,14 +63,14 @@ def handler(event, context):
             response = str()
             imms_id = str()
             operation = str()
-            if record["eventName"] != "REMOVE":
+            if record["eventName"] != EventName.DELETE_PHYSICAL:
                 new_image = record["dynamodb"]["NewImage"]
                 imms_id = new_image["PK"]["S"].split("#")[1]
                 vaccine_type = get_vaccine_type(new_image["PatientSK"]["S"])
                 supplier_system = new_image["SupplierSystem"]["S"]
                 if supplier_system not in ("DPSFULL", "DPSREDUCED"):
                     operation = new_image["Operation"]["S"]
-                    action_flag = "NEW" if operation == "CREATE" else operation
+                    action_flag = ActionFlag.CREATE if operation == Operation.CREATE else operation
                     resource_json = json.loads(new_image["Resource"]["S"])
                     FHIRConverter = Converter(json.dumps(resource_json))
                     flat_json = FHIRConverter.runConversion(resource_json)  # Get the flat JSON
@@ -94,17 +96,17 @@ def handler(event, context):
                     firehose_log["event"] = log_data
                     firehose_logger.send_log(firehose_log)
                     logger.info(f"Record from DPS skipped for {imms_id}")
-                    return {"statusCode": 200, "body": f"Record from DPS skipped for {imms_id}"}
+                    continue
             else:
-                operation = "REMOVE"
+                operation = Operation.DELETE_PHYSICAL
                 new_image = record["dynamodb"]["Keys"]
                 logger.info(f"Record to delta:{new_image}")
                 imms_id = new_image["PK"]["S"].split("#")[1]
                 response = delta_table.put_item(
                     Item={
                         "PK": str(uuid.uuid4()),
                         "ImmsID": imms_id,
-                        "Operation": "REMOVE",
+                        "Operation": Operation.DELETE_PHYSICAL,
                         "VaccineType": "default",
                         "SupplierSystem": "default",
                         "DateTimeStamp": approximate_creation_time.isoformat(),
@@ -131,7 +133,6 @@ def handler(event, context):
                 firehose_log["event"] = log_data
                 firehose_logger.send_log(firehose_log)
                 logger.info(log)
-                return {"statusCode": 200, "body": "Records processed successfully"}
             else:
                 log = f"Record NOT created for {imms_id}"
                 operation_outcome["statusCode"] = "500"
@@ -140,7 +141,7 @@ def handler(event, context):
                 firehose_log["event"] = log_data
                 firehose_logger.send_log(firehose_log)
                 logger.info(log)
-                return {"statusCode": 500, "body": "Records not processed successfully"}
+                ret = False
 
     except Exception as e:
         operation_outcome["statusCode"] = "500"
@@ -155,7 +156,5 @@ def handler(event, context):
         log_data["operation_outcome"] = operation_outcome
         firehose_log["event"] = log_data
         firehose_logger.send_log(firehose_log)
-        return {
-            "statusCode": 500,
-            "body": "Records not processed",
-        }
+        ret = False
+    return ret

delta_backend/tests/test_convert_to_flat_json.py

@@ -8,6 +8,7 @@
 from SchemaParser import SchemaParser
 from Converter import Converter
 from ConversionChecker import ConversionChecker
+from common.mappings import ActionFlag, Operation, EventName
 import ExceptionMessages
 
 MOCK_ENV_VARS = {
@@ -73,7 +74,7 @@ def tearDown(self):
         self.mock_firehose_logger.stop()
 
     @staticmethod
-    def get_event(event_name="INSERT", operation="operation", supplier="EMIS"):
+    def get_event(event_name=EventName.CREATE, operation="operation", supplier="EMIS"):
         """Returns test event data."""
         return ValuesForTests.get_event(event_name, operation, supplier)
 
@@ -83,8 +84,7 @@ def assert_dynamodb_record(self, operation_flag, action_flag, items, expected_va
         Ignores dynamically generated fields like PK, DateTimeStamp, and ExpiresAt.
         Ensures that the 'Imms' field matches exactly.
         """
-        self.assertEqual(response["statusCode"], 200)
-        self.assertEqual(response["body"], "Records processed successfully")
+        self.assertTrue(response)
 
         filtered_items = [
             {k: v for k, v in item.items() if k not in ["PK", "DateTimeStamp", "ExpiresAt"]}
@@ -140,9 +140,9 @@ def test_fhir_converter_json_error_scenario(self):
     def test_handler_imms_convert_to_flat_json(self):
         """Test that the Imms field contains the correct flat JSON data for CREATE, UPDATE, and DELETE operations."""
         expected_action_flags = [
-            {"Operation": "CREATE", "EXPECTED_ACTION_FLAG": "NEW"},
-            {"Operation": "UPDATE", "EXPECTED_ACTION_FLAG": "UPDATE"},
-            {"Operation": "DELETE", "EXPECTED_ACTION_FLAG": "DELETE"},
+            {"Operation": Operation.CREATE, "EXPECTED_ACTION_FLAG": ActionFlag.CREATE},
+            {"Operation": Operation.UPDATE, "EXPECTED_ACTION_FLAG": ActionFlag.UPDATE},
+            {"Operation": Operation.DELETE_LOGICAL, "EXPECTED_ACTION_FLAG": ActionFlag.DELETE_LOGICAL},
         ]
 
         for test_case in expected_action_flags:
@@ -546,4 +546,4 @@ def clear_table(self):
         items = result.get("Items", [])
 
     if __name__ == "__main__":
-        unittest.main()
+        unittest.main()