Enhancements for Gremlin HTTP (#624)

* Gremlin HTTP enhancments

* remove unused import

* update changelog

ChangeLog.md

@@ -8,6 +8,7 @@ Starting with v1.31.6, this file will contain a record of major features and upd
 
 - Added `--connection-protocol` option to `%%gremlin` ([Link to PR](https://github.com/aws/graph-notebook/pull/617))
 - Added global Gremlin `connection_protocol` setting to `%%graph_notebook_config` ([Link to PR](https://github.com/aws/graph-notebook/pull/621))
+- Added various enhancements for `%%gremlin` HTTP connections to Neptune ([Link to PR](https://github.com/aws/graph-notebook/pull/624))
 - Restored left alignment of numeric value columns in results table widget ([Link to PR](https://github.com/aws/graph-notebook/pull/620))
 
 ## Release 4.4.0 (June 10, 2024)

src/graph_notebook/configuration/get_config.py

@@ -9,7 +9,7 @@
     SparqlSection, GremlinSection, Neo4JSection
 from graph_notebook.neptune.client import NEPTUNE_CONFIG_HOST_IDENTIFIERS, is_allowed_neptune_host, false_str_variants, \
     DEFAULT_NEO4J_USERNAME, DEFAULT_NEO4J_PASSWORD, DEFAULT_NEO4J_DATABASE, \
-    NEPTUNE_DB_SERVICE_NAME, NEPTUNE_ANALYTICS_SERVICE_NAME, NEPTUNE_DB_CONFIG_NAMES, NEPTUNE_ANALYTICS_CONFIG_NAMES
+    NEPTUNE_DB_SERVICE_NAME, DEFAULT_WS_PROTOCOL, DEFAULT_HTTP_PROTOCOL
 
 neptune_params = ['neptune_service', 'auth_mode', 'load_from_s3_arn', 'aws_region']
 neptune_gremlin_params = ['connection_protocol']
@@ -33,11 +33,15 @@ def get_config_from_dict(data: dict, neptune_hosts: list = NEPTUNE_CONFIG_HOST_I
         neptune_service = data['neptune_service'] if 'neptune_service' in data else NEPTUNE_DB_SERVICE_NAME
         if 'gremlin' in data:
             data['gremlin']['include_protocol'] = True
+            if 'connection_protocol' not in data['gremlin']:
+                data['gremlin']['connection_protocol'] = DEFAULT_WS_PROTOCOL \
+                    if neptune_service == NEPTUNE_DB_SERVICE_NAME else DEFAULT_HTTP_PROTOCOL
             gremlin_section = GremlinSection(**data['gremlin'])
             if gremlin_section.to_dict()['traversal_source'] != 'g':
                 print('Ignoring custom traversal source, Amazon Neptune does not support this functionality.\n')
         else:
-            gremlin_section = GremlinSection(include_protocol=True)
+            protocol = DEFAULT_WS_PROTOCOL if neptune_service == NEPTUNE_DB_SERVICE_NAME else DEFAULT_HTTP_PROTOCOL
+            gremlin_section = GremlinSection(include_protocol=True, connection_protocol=protocol)
         if neo4j_section.to_dict()['username'] != DEFAULT_NEO4J_USERNAME \
                 or neo4j_section.to_dict()['password'] != DEFAULT_NEO4J_PASSWORD:
             print('Ignoring Neo4J custom authentication, Amazon Neptune does not support this functionality.\n')

src/graph_notebook/magics/graph_magic.py

@@ -44,15 +44,16 @@
     neptune_db_only, neptune_graph_only
 from graph_notebook.magics.ml import neptune_ml_magic_handler, generate_neptune_ml_parser
 from graph_notebook.magics.streams import StreamViewer
-from graph_notebook.neptune.client import ClientBuilder, Client, PARALLELISM_OPTIONS, PARALLELISM_HIGH, \
+from graph_notebook.neptune.client import (ClientBuilder, Client, PARALLELISM_OPTIONS, PARALLELISM_HIGH, \
     LOAD_JOB_MODES, MODE_AUTO, FINAL_LOAD_STATUSES, SPARQL_ACTION, FORMAT_CSV, FORMAT_OPENCYPHER, FORMAT_NTRIPLE, \
     DB_LOAD_TYPES, ANALYTICS_LOAD_TYPES, VALID_BULK_FORMATS, VALID_INCREMENTAL_FORMATS, \
     FORMAT_NQUADS, FORMAT_RDFXML, FORMAT_TURTLE, STREAM_RDF, STREAM_PG, STREAM_ENDPOINTS, \
     NEPTUNE_CONFIG_HOST_IDENTIFIERS, is_allowed_neptune_host, \
     STATISTICS_LANGUAGE_INPUTS, STATISTICS_LANGUAGE_INPUTS_SPARQL, STATISTICS_MODES, SUMMARY_MODES, \
-    SPARQL_EXPLAIN_MODES, OPENCYPHER_EXPLAIN_MODES, OPENCYPHER_PLAN_CACHE_MODES, OPENCYPHER_DEFAULT_TIMEOUT, \
-    OPENCYPHER_STATUS_STATE_MODES, normalize_service_name, GRAPH_PG_INFO_METRICS, \
-    DEFAULT_GREMLIN_PROTOCOL, GREMLIN_PROTOCOL_FORMATS, DEFAULT_HTTP_PROTOCOL, normalize_protocol_name
+    SPARQL_EXPLAIN_MODES, OPENCYPHER_EXPLAIN_MODES, GREMLIN_EXPLAIN_MODES, \
+    OPENCYPHER_PLAN_CACHE_MODES, OPENCYPHER_DEFAULT_TIMEOUT, OPENCYPHER_STATUS_STATE_MODES, \
+    normalize_service_name, GRAPH_PG_INFO_METRICS, \
+    DEFAULT_GREMLIN_PROTOCOL, GREMLIN_PROTOCOL_FORMATS, DEFAULT_HTTP_PROTOCOL, normalize_protocol_name)
 from graph_notebook.network import SPARQLNetwork
 from graph_notebook.network.gremlin.GremlinNetwork import parse_pattern_list_str, GremlinNetwork
 from graph_notebook.visualization.rows_and_columns import sparql_get_rows_and_columns, opencypher_get_rows_and_columns
@@ -534,7 +535,7 @@ def stream_viewer(self, line):
 
         language = args.language
         limit = args.limit
-        uri = self.client.get_uri_with_port()
+        uri = self.client.get_uri(include_port=True)
         viewer = StreamViewer(self.client, uri, language, limit=limit)
         viewer.show()
 
@@ -1034,8 +1035,9 @@ def gremlin(self, line, cell, local_ns: dict = None):
                                  f'If not specified, defaults to the value of the gremlin.connection_protocol field '
                                  f'in %graph_notebook_config. Please note that this option has no effect on the '
                                  f'Profile and Explain modes, which must use HTTP.')
-        parser.add_argument('--explain-type', type=str.lower, default='',
-                            help='Explain mode to use when using the explain query mode.')
+        parser.add_argument('--explain-type', type=str.lower, default='dynamic',
+                            help=f'Explain mode to use when using the explain query mode. '
+                                 f'Accepted values: {GREMLIN_EXPLAIN_MODES}')
         parser.add_argument('-p', '--path-pattern', default='', help='path pattern')
         parser.add_argument('-g', '--group-by', type=str, default='',
                             help='Property used to group nodes (e.g. code, T.region) default is T.label')
@@ -1074,6 +1076,8 @@ def gremlin(self, line, cell, local_ns: dict = None):
                                  'TinkerPop driver "Serializers" enum values. Default is GRAPHSON_V3_UNTYPED')
         parser.add_argument('--profile-indexOps', action='store_true', default=False,
                             help='Show a detailed report of all index operations.')
+        parser.add_argument('--profile-debug', action='store_true', default=False,
+                            help='Enable debug mode.')
         parser.add_argument('--profile-misc-args', type=str, default='{}',
                             help='Additional profile options, passed in as a map.')
         parser.add_argument('-sp', '--stop-physics', action='store_true', default=False,
@@ -1154,7 +1158,8 @@ def gremlin(self, line, cell, local_ns: dict = None):
             profile_args = {"profile.results": args.profile_no_results,
                             "profile.chop": args.profile_chop,
                             "profile.serializer": serializer,
-                            "profile.indexOps": args.profile_indexOps}
+                            "profile.indexOps": args.profile_indexOps,
+                            "profile.debug": args.profile_debug}
             try:
                 profile_misc_args_dict = json.loads(args.profile_misc_args)
                 profile_args.update(profile_misc_args_dict)

src/graph_notebook/magics/metadata.py

@@ -204,8 +204,11 @@ def build_gremlin_metadata_from_query(query_type: str, results: any, res: Respon
     if query_type == 'explain':
         gremlin_metadata = create_propertygraph_metadata_obj('explain')
         gremlin_metadata.set_request_metrics(res)
-        gremlin_metadata.set_metric_value('predicates', int((re.search(r'# of predicates: (.*?)\n', results).group(1))
-                                                            .replace(".", '').replace(",", '')))
+        try:
+            gremlin_metadata.set_metric_value('predicates', int((re.search(r'# of predicates: (.*?)\n', results).group(1))
+                                                                .replace(".", '').replace(",", '')))
+        except AttributeError:
+            pass
         return gremlin_metadata
     elif query_type == 'profile':
         gremlin_metadata = create_propertygraph_metadata_obj('profile')

src/graph_notebook/neptune/client.py

@@ -137,6 +137,7 @@
 
 SPARQL_EXPLAIN_MODES = ['dynamic', 'static', 'details']
 OPENCYPHER_EXPLAIN_MODES = ['dynamic', 'static', 'details']
+GREMLIN_EXPLAIN_MODES = ['dynamic', 'static', 'details']
 OPENCYPHER_PLAN_CACHE_MODES = ['auto', 'enabled', 'disabled']
 OPENCYPHER_DEFAULT_TIMEOUT = 120000
 OPENCYPHER_STATUS_STATE_MODES = ['ALL', 'RUNNING', 'WAITING', 'CANCELLING']
@@ -257,7 +258,7 @@ def is_neptune_domain(self):
     def is_analytics_domain(self):
         return self.service == NEPTUNE_ANALYTICS_SERVICE_NAME
 
-    def get_uri_with_port(self, use_websocket=False, use_proxy=False):
+    def get_uri(self, use_websocket=False, use_proxy=False, include_port=True):
         if use_websocket is True:
             protocol = self._ws_protocol
         else:
@@ -270,7 +271,9 @@ def get_uri_with_port(self, use_websocket=False, use_proxy=False):
             uri_host = self.target_host
             uri_port = self.target_port
 
-        uri = f'{protocol}://{uri_host}:{uri_port}'
+        uri = f'{protocol}://{uri_host}'
+        if include_port:
+            uri += f':{uri_port}'
         return uri
 
     def get_graph_id(self):
@@ -347,9 +350,9 @@ def sparql_cancel(self, query_id: str, silent: bool = False):
     def get_gremlin_connection(self, transport_kwargs) -> client.Client:
         nest_asyncio.apply()
 
-        ws_url = f'{self.get_uri_with_port(use_websocket=True, use_proxy=False)}/gremlin'
+        ws_url = f'{self.get_uri(use_websocket=True, use_proxy=False)}/gremlin'
         if self.proxy_host != '':
-            proxy_http_url = f'{self.get_uri_with_port(use_websocket=False, use_proxy=True)}/gremlin'
+            proxy_http_url = f'{self.get_uri(use_websocket=False, use_proxy=True)}/gremlin'
             transport_factory_args = lambda: AiohttpTransport(call_from_event_loop=True, proxy=proxy_http_url,
                                                               **transport_kwargs)
             request = self._prepare_request('GET', proxy_http_url)
@@ -387,9 +390,17 @@ def gremlin_http_query(self, query, headers=None) -> requests.Response:
         if headers is None:
             headers = {}
 
+        data = {}
         use_proxy = True if self.proxy_host != '' else False
-        uri = f'{self.get_uri_with_port(use_websocket=False, use_proxy=use_proxy)}/gremlin'
-        data = {'gremlin': query}
+        if self.is_analytics_domain():
+            uri = f'{self.get_uri(use_websocket=False, use_proxy=use_proxy, include_port=False)}/queries'
+            data['language'] = 'gremlin'
+            data['gremlin'] = query
+            headers['content-type'] = 'application/json'
+        else:
+            uri = f'{self.get_uri(use_websocket=False, use_proxy=use_proxy)}/gremlin'
+            data['gremlin'] = query
+
         req = self._prepare_request('POST', uri, data=json.dumps(data), headers=headers)
         res = self._http_session.send(req, verify=self.ssl_verify)
         return res
@@ -412,12 +423,25 @@ def gremlin_profile(self, query: str, args={}) -> requests.Response:
         return self._gremlin_query_plan(query=query, plan_type='profile', args=args)
 
     def _gremlin_query_plan(self, query: str, plan_type: str, args: dict, ) -> requests.Response:
-        url = f'{self._http_protocol}://{self.host}:{self.port}/gremlin/{plan_type}'
-        data = {'gremlin': query}
+        data = {}
+        headers = {}
+        url = f'{self._http_protocol}://{self.host}'
+        if self.is_analytics_domain():
+            url += '/queries'
+            data['gremlin'] = query
+            data['language'] = 'gremlin'
+            headers['content-type'] = 'application/json'
+            if plan_type == 'explain':
+                data['explain.mode'] = args.pop('explain.mode')
+            elif plan_type == 'profile':
+                data['profile.debug'] = args.pop('profile.debug')
+        else:
+            url += f':{self.port}/gremlin/{plan_type}'
+            data['gremlin'] = query
         if args:
             for param, value in args.items():
                 data[param] = value
-        req = self._prepare_request('POST', url, data=json.dumps(data))
+        req = self._prepare_request('POST', url, data=json.dumps(data), headers=headers)
         res = self._http_session.send(req, verify=self.ssl_verify)
         return res