Sfr 2374 access parameter store (#475)

* SSM service and test functionality

services/ssm_service.py

@@ -0,0 +1,26 @@
+import os
+import boto3
+from typing import Optional
+
+from logger import create_log
+
+logger = create_log(__name__)
+
+ssm_client = boto3.client(
+            'ssm',
+            aws_access_key_id=os.environ.get('AWS_ACCESS', None),
+            aws_secret_access_key=os.environ.get('AWS_SECRET', None),
+            region_name=os.environ.get('AWS_REGION', None)
+        )
+
+def get_parameter(parameter_name: str) -> Optional[dict]:
+    try:
+        response = ssm_client.get_parameter(
+            Name=parameter_name,
+            WithDecryption=True
+        )
+        return response
+
+    except Exception as err:
+        logger.exception(f"Parameter store retrieval for {parameter_name} failed")
+        return None

tests/integration/test_ssm_service.py

@@ -0,0 +1,11 @@
+import os
+from load_env import load_env_file
+
+from services.ssm_service import get_parameter
+
+TEST_PARAM = 'arn:aws:ssm:us-east-1:946183545209:parameter/drb/qa/nypl-api/public-key'
+
+def test_get_parameter():
+    value = get_parameter(TEST_PARAM)
+
+    assert value != None