Support Slash backend connection

Author: all-seeing-code

examples/simple/index.js

@@ -1,5 +1,4 @@
 const dgraph = require("dgraph-js");
-const grpc = require("grpc");
 
 // Create a client stub.
 function newClientStub() {
@@ -87,7 +86,7 @@ async function createData(dgraphClient) {
         console.log(
             `Created person named "Alice" with uid = ${response
                 .getUidsMap()
-                .get("alice")}\n`
+                .get("alice")}\n`,
         );
 
         console.log("All created nodes (map from blank node names to uids):");

lib/clientStubFromSlash.d.ts

@@ -0,0 +1,2 @@
+import { DgraphClientStub } from "./clientStub";
+export declare function clientStubFromSlashGraphQLEndpoint(graphqlEndpoint: string, apiKey: string): DgraphClientStub;

lib/clientStubFromSlash.js

@@ -0,0 +1,23 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.clientStubFromSlashGraphQLEndpoint = void 0;
+var grpc = require("@grpc/grpc-js");
+var clientStub_1 = require("./clientStub");
+var Url = require("url-parse");
+var PORT = "443";
+function clientStubFromSlashGraphQLEndpoint(graphqlEndpoint, apiKey) {
+    var url = new Url(graphqlEndpoint);
+    var urlParts = url.host.split(".");
+    var firstHalf = urlParts[0];
+    var secondHalf = urlParts.splice(1).join(".") + ":" + PORT;
+    var backenedURL = firstHalf + ".grpc." + secondHalf;
+    console.log(backenedURL);
+    var metaCreds = grpc.credentials.createFromMetadataGenerator(function (_, callback) {
+        var metadata = new grpc.Metadata();
+        metadata.add("authorization", apiKey);
+        callback(null, metadata);
+    });
+    var credentials = grpc.credentials.combineChannelCredentials(grpc.credentials.createSsl(), metaCreds);
+    return new clientStub_1.DgraphClientStub(backenedURL, credentials);
+}
+exports.clientStubFromSlashGraphQLEndpoint = clientStubFromSlashGraphQLEndpoint;

lib/dgraph.d.ts

@@ -2,6 +2,7 @@ export * from "./types";
 export { Operation, Request, TxnContext, Check, Version, NQuad, Value, Facet, Latency, } from "../generated/api_pb";
 export * from "./clientStub";
 export * from "./client";
+export * from "./clientStubFromSlash";
 export * from "./txn";
 export * from "./errors";
 export * as grpc from "@grpc/grpc-js";

lib/dgraph.js

@@ -23,6 +23,7 @@ Object.defineProperty(exports, "Facet", { enumerable: true, get: function () { r
 Object.defineProperty(exports, "Latency", { enumerable: true, get: function () { return api_pb_1.Latency; } });
 __exportStar(require("./clientStub"), exports);
 __exportStar(require("./client"), exports);
+__exportStar(require("./clientStubFromSlash"), exports);
 __exportStar(require("./txn"), exports);
 __exportStar(require("./errors"), exports);
 exports.grpc = require("@grpc/grpc-js");