Added new GPRC service to stream policy updates

Signed-off-by: Wazir Ahmed <wazir@accuknox.com>

src/protobuf/Makefile

@@ -8,4 +8,4 @@ build:
 	protoc -I=. --go_out . --go_opt paths=source_relative --go-grpc_out . --go-grpc_opt paths=source_relative v1/analyzer/analyzer.proto
 	protoc -I=. --go_out . --go_opt paths=source_relative --go-grpc_out . --go-grpc_opt paths=source_relative v1/insight/insight.proto
 	protoc -I=. --go_out . --go_opt paths=source_relative --go-grpc_out . --go-grpc_opt paths=source_relative v1/observability/observability.proto
-
+	protoc -I=. --go_out . --go_opt paths=source_relative --go-grpc_out . --go-grpc_opt paths=source_relative v1/discovery/discovery.proto

src/protobuf/install_protoc.sh

@@ -10,4 +10,5 @@ export PATH="$PATH:$HOME/.local/bin"
 
 rm protoc-3.15.8-linux-x86_64.zip
 
+go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
 go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest

src/protobuf/v1/discovery/discovery.proto

@@ -0,0 +1,27 @@
+syntax = "proto3";
+
+package v1.discovery;
+
+option go_package = "github.com/accuknox/knoxAutoPolicy/protos/v1/discovery";
+
+service Discovery {
+  rpc GetPolicy(GetPolicyRequest) returns (stream GetPolicyResponse) {}
+}
+
+message GetPolicyRequest {
+  bool follow = 1;
+  repeated string kind = 2;
+  string cluster = 3;
+  string namespace = 4;
+  repeated string label = 5;
+}
+
+message GetPolicyResponse {
+  string kind = 1;
+  string cluster = 2;
+  string namespace = 3;
+  repeated string label = 4;
+  string name = 5;
+  bytes yaml = 6;
+  string error = 100;
+}