grpc added delete session and set session state apis

daemon/proto/core.proto

@@ -5,6 +5,8 @@ package core;
 service CoreApi {
     rpc CreateSession (CreateSessionRequest) returns (CreateSessionResponse) {
     }
+    rpc DeleteSession (DeleteSessionRequest) returns (DeleteSessionResponse) {
+    }
     rpc GetSessions (SessionsRequest) returns (SessionsResponse) {
     }
     rpc GetSession (SessionRequest) returns (SessionResponse) {
@@ -14,7 +16,8 @@ service CoreApi {
     rpc GetSessionLocation (GetSessionLocationRequest) returns (GetSessionLocationResponse) {
     }
     rpc SetSessionLocation (SetSessionLocationRequest) returns (SetSessionLocationResponse) {
-
+    }
+    rpc SetSessionState (SetSessionStateRequest) returns (SetSessionStateResponse) {
     }
 }
 
@@ -28,6 +31,14 @@ message CreateSessionResponse {
     int32 state = 2;
 }
 
+message DeleteSessionRequest {
+    int32 id = 1;
+}
+
+message DeleteSessionResponse {
+    bool result = 1;
+}
+
 message SessionsRequest {
 }
 
@@ -69,10 +80,28 @@ message SetSessionLocationRequest {
 }
 
 message SetSessionLocationResponse {
+}
 
+message SetSessionStateRequest {
+    int32 id = 1;
+    SessionState state = 2;
+}
+
+message SetSessionStateResponse {
+    bool result = 1;
 }
 
 // data structures for messages below
+enum SessionState {
+    NONE = 0;
+    DEFINITION = 1;
+    CONFIGURATION = 2;
+    INSTANTIATION = 3;
+    RUNTIME = 4;
+    DATACOLLECT = 5;
+    SHUTDOWN = 6;
+}
+
 message ConfigGroup {
     string name = 1;
     repeated ConfigOption options = 2;