Reorganized repo using yarn and workspaces

packages/backend/src/index.ts

@@ -0,0 +1,49 @@
+import * as WebSocket from 'ws';
+import * as express from 'express';
+import { createServer } from 'http';
+import Node from './node';
+import Feed from './feed';
+import Aggregator from './aggregator';
+import { map, join } from '@dotstats/common';
+
+const aggregator = new Aggregator;
+const app = express();
+const server = createServer(app);
+
+// WebSocket for Nodes feeding telemetry data to the server
+const incomingTelemetry = new WebSocket.Server({ port: 1024 });
+
+// WebSocket for web clients listening to the telemetry data aggregate
+const telemetryFeed = new WebSocket.Server({ server });
+
+app.get('/', function (req, res) {
+    function nodeInfo(node: Node) {
+        return `${node.name} | ${node.height} | Block time ${node.blockTime / 1000}s`;
+    }
+
+    res.send(
+
+`<pre>
+Best block: ${aggregator.height}
+
+Node list:
+${ join(map(aggregator.nodeList(), nodeInfo), '\n') }
+</pre>`
+
+    );
+});
+
+incomingTelemetry.on('connection', async (socket: WebSocket) => {
+    try {
+        aggregator.addNode(await Node.fromSocket(socket));
+    } catch (err) {
+        console.error(err);
+    }
+});
+
+telemetryFeed.on('connection', (socket: WebSocket) => {
+    aggregator.addFeed(new Feed(socket));
+});
+
+console.log('Starting server on port 8080');
+server.listen(8080);