roleStage: use-cases now get fetched from the server

src/data-hub/role-stage-discovery-microservice/app/processing/fetching/fetching.py

@@ -55,7 +55,30 @@ def _fetch_nodes(use_case: str, layer: Layer) -> List[Dict]:
     
     return nodes
 
-def fetch_nodes_from_semantic_linking(use_case: str):
+def _fetch_use_cases() -> List[str]:
+    # fetch use-cases
+    jwt = TokenManager.getInstance().getToken()
+
+    url = f'https://{network_constants.BUSINESS_LOGIC_HOSTNAME}:{network_constants.BUSINESS_LOGIC_REST_PORT}/api/use-cases'
+
+    response = requests.get(
+            url,
+            verify = False, 
+            proxies = { "http":None, "https":None },
+            headers = {"Authorization": f"Bearer {jwt}"}
+    )
+
+    if response.status_code != 200:
+        raise ConnectionError(f"Could not fetch data from the server, statuscode: {response.status_code}!")
+
+    data = json.loads(response.text)
+
+    return [row["name"] for row in data]
+
+def fetch_nodes_from_semantic_linking():
+    use_cases = _fetch_use_cases()
+
+    for use_case in use_cases:
         # prune DB 
         repository = Repository()
         repository.delete_all_layers()

src/data-hub/role-stage-discovery-microservice/app/run_node_fetching.py

@@ -10,4 +10,4 @@ import processing.fetching.fetching as f
 
 if __name__ == "__main__":
     # TODO read use_case from somewhere
-    f.fetch_nodes_from_semantic_linking("smart-energy")
\ No newline at end of file
+    f.fetch_nodes_from_semantic_linking()
\ No newline at end of file