Feature/rag parameters (#311)

* Change document-rag and graph-rag processing so that the user can
specify parameters.  Changes in Pulsar services, Pulsar message
schemas, gateway and command-line tools.  User-visible changes in
new parameters on command-line tools.

* Fix bugs, graph-rag working

* Get subgraph truncation in the right place

* Graph RAG and document RAG working and configurable

* Multi-hop path traversal GraphRAG

* Add safety valve for path_size set too high

trustgraph-cli/scripts/tg-invoke-document-rag

@@ -11,13 +11,16 @@ from trustgraph.api import Api
 default_url = os.getenv("TRUSTGRAPH_URL", 'http://localhost:8088/')
 default_user = 'trustgraph'
 default_collection = 'default'
+default_doc_limit = 10
 
-def question(url, question, user, collection):
+def question(url, question, user, collection, doc_limit):
 
     rag = Api(url)
 
-# user=user, collection=collection, 
-    resp = rag.document_rag(question=question)
+    resp = rag.document_rag(
+        question=question, user=user, collection=collection,
+        doc_limit=doc_limit,
+    )
 
     print(resp)
 
@@ -41,7 +44,7 @@ def main():
     # )
 
     parser.add_argument(
-        '-q', '--query',
+        '-q', '--question',
         required=True,
         help=f'Question to answer',
     )
@@ -58,6 +61,12 @@ def main():
         help=f'Collection ID (default: {default_collection})'
     )
 
+    parser.add_argument(
+        '-d', '--doc-limit',
+        default=default_doc_limit,
+        help=f'Document limit (default: {default_doc_limit})'
+    )
+
     args = parser.parse_args()
 
     try:
@@ -67,6 +76,7 @@ def main():
             question=args.question,
             user=args.user,
             collection=args.collection,
+            doc_limit=args.doc_limit,
         )
 
     except Exception as e: