updated grpc example based on recent updates (#872)

Author: saeid93

docs/examples/custom-json/README.ipynb

@@ -244,6 +244,7 @@
     "import requests\n",
     "import json\n",
     "import grpc\n",
+    "from mlserver.codecs.string import StringRequestCodec\n",
     "import mlserver.grpc.converters as converters\n",
     "import mlserver.grpc.dataplane_pb2_grpc as dataplane\n",
     "import mlserver.types as types\n",
@@ -279,7 +280,9 @@
     "print(f\"full response:\\n\")\n",
     "print(response)\n",
     "# retrive text output as dictionary\n",
-    "output = json.loads(response.outputs[0].contents.bytes_contents[0])\n",
+    "inference_response = converters.ModelInferResponseConverter.to_types(response)\n",
+    "raw_json = StringRequestCodec.decode_response(inference_response)\n",
+    "output = json.loads(raw_json[0])\n",
     "print(f\"\\ndata part:\\n\")\n",
     "pp.pprint(output)"
    ]
@@ -301,7 +304,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.13"
+   "version": "3.8.15"
   },
   "vscode": {
    "interpreter": {

docs/examples/custom-json/README.md

@@ -174,6 +174,7 @@ Python clients.
 import requests
 import json
 import grpc
+from mlserver.codecs.string import StringRequestCodec
 import mlserver.grpc.converters as converters
 import mlserver.grpc.dataplane_pb2_grpc as dataplane
 import mlserver.types as types
@@ -209,7 +210,9 @@ response = grpc_stub.ModelInfer(inference_request_g)
 print(f"full response:\n")
 print(response)
 # retrive text output as dictionary
-output = json.loads(response.outputs[0].contents.bytes_contents[0])
+inference_response = converters.ModelInferResponseConverter.to_types(response)
+raw_json = StringRequestCodec.decode_response(inference_response)
+output = json.loads(raw_json[0])
 print(f"\ndata part:\n")
 pp.pprint(output)
 ```