Add roles service

Author: gedorinku

api/entries.swagger.json

@@ -125,6 +125,18 @@
       ],
       "default": "MEMBERS_ONLY"
     },
+    "prolab_accountsRole": {
+      "type": "object",
+      "properties": {
+        "role_id": {
+          "type": "integer",
+          "format": "int64"
+        },
+        "name": {
+          "type": "string"
+        }
+      }
+    },
     "prolab_accountsUser": {
       "type": "object",
       "properties": {
@@ -156,7 +168,7 @@
           "format": "boolean"
         },
         "role": {
-          "type": "string"
+          "$ref": "#/definitions/prolab_accountsRole"
         },
         "twitter_screen_name": {
           "type": "string"

api/entries.validator.pb.go

@@ -0,0 +1,38 @@
+syntax = "proto3";
+
+package programming_lab.prolab_accounts;
+
+option go_package = "github.com/ProgrammingLab/prolab-accounts/api;api_pb";
+
+
+import "google/api/annotations.proto";
+import "google/protobuf/empty.proto";
+
+service RoleService {
+  rpc ListRoles (ListRolesRequest) returns (ListRolesResponse) {
+    option (google.api.http) = {
+      get: "/roles"
+    };
+  }
+  rpc GetRole (GetRoleRequest) returns (Role) {
+    option (google.api.http) = {
+      get: "/roles/{role_id}"
+    };
+  }
+}
+
+message Role {
+  uint32 role_id = 1;
+  string name = 2;
+}
+
+message ListRolesRequest {
+}
+
+message ListRolesResponse {
+  repeated Role roles = 1;
+}
+
+message GetRoleRequest {
+  uint32 role_id = 1;
+}

api/oauth.validator.pb.go

@@ -9,6 +9,7 @@ import "github.com/mwitkow/go-proto-validators/validator.proto";
 import "google/api/annotations.proto";
 import "google/protobuf/empty.proto";
 
+import "roles.proto";
 import "type/department.proto";
 
 service UserService {
@@ -61,7 +62,7 @@ message User {
   string description = 6;
   int32 grade = 7;
   bool left = 8;
-  string role = 11;
+  Role role = 11;
   string twitter_screen_name = 12;
   string github_user_name = 13;
   type.Department department = 14;