Fix(ext-proc-examples): Add RequestBody and ResponseBody handling in request processing (#9183)

feat: add handling for RequestBody and ResponseBody in processing requests

Signed-off-by: Andrea Abellonio <andrea.abellonio@servescale.ai>

Author: abe-servescale

examples/kubernetes/ext-proc-grpc-service.yaml

@@ -273,6 +273,17 @@ data:
     				},
     			}
     			break
+    		case *envoy_service_proc_v3.ProcessingRequest_RequestBody:
+    			resp = &envoy_service_proc_v3.ProcessingResponse{
+    				Response: &envoy_service_proc_v3.ProcessingResponse_RequestBody{
+    					RequestBody: &envoy_service_proc_v3.BodyResponse{
+    						Response: &envoy_service_proc_v3.CommonResponse{
+    							Status: envoy_service_proc_v3.CommonResponse_CONTINUE,
+    						},
+    					},
+    				},
+    			}
+    			break
     		case *envoy_service_proc_v3.ProcessingRequest_ResponseHeaders:
     			rhq := &envoy_service_proc_v3.HeadersResponse{
     				Response: &envoy_service_proc_v3.CommonResponse{
@@ -294,6 +305,17 @@ data:
     				},
     			}
     			break
+    		case *envoy_service_proc_v3.ProcessingRequest_ResponseBody:
+    			resp = &envoy_service_proc_v3.ProcessingResponse{
+    				Response: &envoy_service_proc_v3.ProcessingResponse_ResponseBody{
+    					ResponseBody: &envoy_service_proc_v3.BodyResponse{
+    						Response: &envoy_service_proc_v3.CommonResponse{
+    							Status: envoy_service_proc_v3.CommonResponse_CONTINUE,
+    						},
+    					},
+    				},
+    			}
+    			break
     		default:
     			log.Printf("Unknown Request type %v\n", v)
     		}