Support multi tenancy

Author: vardhanapoorv

lib/clientStub.d.ts

@@ -19,6 +19,7 @@ export declare class DgraphClientStub {
     commit(ctx: TxnContext): Promise<TxnContext>;
     abort(ctx: TxnContext): Promise<TxnContext>;
     login(userid?: string, password?: string, refreshToken?: string): Promise<boolean>;
+    loginIntoNamespace(userid?: string, password?: string, namespace?: number, refreshToken?: string): Promise<boolean>;
     logout(): void;
     getAuthTokens(): {
         accessToken?: string;

lib/clientStub.js

@@ -260,6 +260,13 @@ var DgraphClientStub = (function () {
         return this.callAPI(url, __assign(__assign({}, this.options), { method: "POST" }));
     };
     DgraphClientStub.prototype.login = function (userid, password, refreshToken) {
+        return __awaiter(this, void 0, void 0, function () {
+            return __generator(this, function (_a) {
+                return [2, this.loginIntoNamespace(userid, password, 0, refreshToken)];
+            });
+        });
+    };
+    DgraphClientStub.prototype.loginIntoNamespace = function (userid, password, namespace, refreshToken) {
         return __awaiter(this, void 0, void 0, function () {
             var body, res;
             return __generator(this, function (_a) {
@@ -281,6 +288,7 @@ var DgraphClientStub = (function () {
                         else {
                             body.userid = userid;
                             body.password = password;
+                            body.namespace = namespace;
                         }
                         return [4, this.callAPI("login", __assign(__assign({}, this.options), { method: "POST", body: JSON.stringify(body) }))];
                     case 1:

src/clientStub.ts

@@ -295,12 +295,21 @@ export class DgraphClientStub {
         userid?: string,
         password?: string,
         refreshToken?: string,
+    ): Promise<boolean> {
+       return this.loginIntoNamespace(userid, password, 0, refreshToken)
+    }
+
+    public async loginIntoNamespace(
+        userid?: string,
+        password?: string,
+        namespace?: number,
+        refreshToken?: string,
     ): Promise<boolean> {
         if (this.legacyApi) {
             throw new Error("Pre v1.1 clients do not support Login methods");
         }
 
-        const body: { [k: string]: string } = {};
+        const body: { [k: string ]: string | number} = {};
         if (
             userid === undefined &&
             refreshToken === undefined &&
@@ -316,6 +325,7 @@ export class DgraphClientStub {
         } else {
             body.userid = userid;
             body.password = password;
+            body.namespace = namespace;
         }
 
         const res: LoginResponse = await this.callAPI("login", {