Token renewal protocol for TypeDB Cluster (#144)

## What is the goal of this PR?

We have introduced a new protocol for performing authentication token renewal in TypeDB Cluster.

## What are the changes implemented in this PR?

1. Added a new service `user_token_renew`
2. Added `Renew` request and response object

Author: Ganeshwara Hananda

cluster/BUILD

@@ -23,12 +23,18 @@ proto_library(
     name = "service-proto",
     srcs = [":cluster_service.proto"],
     deps = [
+        ":client-proto",
         ":server-proto",
         ":user-proto",
         ":database-proto"
     ],
 )
 
+proto_library(
+    name = "client-proto",
+    srcs = [":cluster_user_token.proto"],
+)
+
 proto_library(
     name = "server-proto",
     srcs = [":cluster_server.proto"],

cluster/cluster_service.proto

@@ -21,9 +21,11 @@ option java_package = "com.vaticle.typedb.protocol";
 option java_outer_classname = "ClusterServiceProto";
 option java_generic_services = true;
 
+
 import "cluster/cluster_server.proto";
 import "cluster/cluster_user.proto";
 import "cluster/cluster_database.proto";
+import "cluster/cluster_user_token.proto";
 
 package typedb.protocol;
 
@@ -41,6 +43,9 @@ service TypeDBCluster {
     rpc user_password (ClusterUser.Password.Req) returns (ClusterUser.Password.Res);
     rpc user_delete (ClusterUser.Delete.Req) returns (ClusterUser.Delete.Res);
 
+    // User Token API
+    rpc user_token_renew (ClusterUserToken.Renew.Req) returns (ClusterUserToken.Renew.Res);
+
     // Database Manager API
     rpc databases_get (ClusterDatabaseManager.Get.Req) returns (ClusterDatabaseManager.Get.Res);
     rpc databases_all (ClusterDatabaseManager.All.Req) returns (ClusterDatabaseManager.All.Res);

cluster/cluster_user.proto

@@ -26,7 +26,7 @@ message ClusterUserManager {
 
     message Contains {
         message Req {
-            string name = 1;
+            string username = 1;
         }
         message Res {
             bool contains = 1;
@@ -35,7 +35,7 @@ message ClusterUserManager {
 
     message Create {
         message Req {
-            string name = 1;
+            string username = 1;
             string password = 2;
         }
         message Res {}
@@ -53,15 +53,15 @@ message ClusterUser {
 
     message Password {
         message Req {
-            string name = 1;
+            string username = 1;
             string password = 2;
         }
         message Res {}
     }
 
     message Delete {
         message Req {
-            string name = 1;
+            string username = 1;
         }
         message Res {}
     }

cluster/cluster_user_token.proto

@@ -0,0 +1,36 @@
+//
+// Copyright (C) 2021 Vaticle
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+//
+
+syntax = "proto3";
+
+option java_package = "com.vaticle.typedb.protocol";
+option java_outer_classname = "ClusterUserTokenProto";
+
+package typedb.protocol;
+
+message ClusterUserToken {
+
+    message Renew {
+        message Req {
+            string username = 1;
+        }
+
+        message Res {
+            string token = 1;
+        }
+    }
+}

grpc/java/BUILD

@@ -27,6 +27,7 @@ java_grpc_compile(
     name = "typedb-protocol-src",
     deps = [
         "//cluster:service-proto",
+        "//cluster:client-proto",
         "//cluster:server-proto",
         "//cluster:user-proto",
         "//cluster:database-proto",

grpc/nodejs/BUILD

@@ -41,6 +41,7 @@ nodejs_binary(
 ts_grpc_compile(
     name = "typedb-protocol-src",
     deps = [
+        "//cluster:client-proto",
         "//cluster:server-proto",
         "//cluster:user-proto",
         "//cluster:database-proto",

grpc/python/BUILD

@@ -25,6 +25,7 @@ load("@vaticle_dependencies//tool/checkstyle:rules.bzl", "checkstyle_test")
 python_grpc_compile(
     name = "typedb-protocol-src",
     deps = [
+        "//cluster:client-proto",
         "//cluster:server-proto",
         "//cluster:user-proto",
         "//cluster:database-proto",