Add session_id_generator and compute_dict_hash

functions

src/backend/langflow/services/session/utils.py

@@ -1,6 +1,18 @@
+import hashlib
 import random
 import string
 
+from langflow.services.cache.utils import filter_json
+from langflow.services.database.models.base import orjson_dumps
+
 
 def session_id_generator(size=6):
     return "".join(random.SystemRandom().choices(string.ascii_uppercase + string.digits, k=size))
+
+
+def compute_dict_hash(graph_data):
+    graph_data = filter_json(graph_data)
+
+    cleaned_graph_json = orjson_dumps(graph_data, sort_keys=True)
+
+    return hashlib.sha256(cleaned_graph_json.encode("utf-8")).hexdigest()