Merge pull request 'Finished exporter' (#1) from development into master

Reviewed-on: #1

src/main.ts

@@ -1,7 +1,8 @@
 import compression from 'compression';
+import cors from 'cors';
 import express from 'express';
 import http from 'node:http';
-import * as process from 'node:process';
+import process from 'node:process';
 import {environment} from './environment';
 import {errorHandler, errorMiddleware} from './error.middleware';
 import {loggerMiddleware} from './logger.middleware';
@@ -11,6 +12,7 @@ if(!environment.tickers.length) throw new Error('Please provide a CSV list of ti
 
 const app = express();
 const httpServer: http.Server = http.createServer(app);
+app.use(cors({origin: '*'}))
 app.use(compression());
 app.use(loggerMiddleware);
 
@@ -21,7 +23,7 @@ let shuttingDown = false;
 		if(shuttingDown) return; // Already shutting down
 		shuttingDown = true;
 		console.warn(`${signal} Received, shutting down...`);
-		httpServer.close(() => setTimeout(() => process.exit(128 + value), 1000));
+		httpServer.close(() => process.exit(128 + value));
 	});
 });
 
@@ -30,11 +32,8 @@ app.get('/', errorHandler(async (req, res) => {
 		fetch(`https://finnhub.io/api/v1/quote?symbol=${ticker}&token=${environment.token}`)
 			.then(resp => resp.json())));
 
-// 	const metrics = results.map(r => `# HELP stock_price_${result.symbol} Stock price for ${result.symbol}
+	let metrics = '# HELP stock_price Current stock price\n# TYPE stock_price gauge\n';
-// # TYPE stock_price_${result.symbol} gauge
+	metrics += results.map((r, i) => `stock_price{ticker="${environment.tickers[i]}"} ${r.c}`).join('\n');
-// stock_price_${result.symbol} ${result.c}`).join('\n');
-	const metrics = JSON.stringify(results);
-
 	res.contentType('text/plain').send(metrics);
 }));