web example added

Author: JaimeSalas

06-monitoring/00-prometheus/.solutions/web/.dockerignore

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+node_modules
+Dockerfile
+*.md

06-monitoring/00-prometheus/.solutions/web/Dockerfile

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+FROM node:16-alpine 
+
+WORKDIR /opt/app
+
+COPY . .
+
+RUN npm ci 
+
+CMD ["npm", "start"]

06-monitoring/00-prometheus/.solutions/web/config.js

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+module.exports = ({
+  port: +process.env.PORT || 3000,
+});

06-monitoring/00-prometheus/.solutions/web/helpers.js

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+const Chance = require('chance');
+
+const chance = new Chance();
+
+module.exports.getRandom = (start, end) => Math.floor((Math.random() * end) + start);
+
+module.exports.delay = (delaySeconds) => new Promise((resolve) => {
+  setTimeout(() => {
+    resolve();
+  }, delaySeconds * 1_000);
+});
+
+
+module.exports.getQuote = () => chance.sentence();

06-monitoring/00-prometheus/.solutions/web/index.js

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+const express = require('express');
+const { port } = require('./config');
+const { getQuote } = require('./helpers');
+
+const app = express();
+
+// curl -X GET "http://localhost:3000/quote"
+app.get('/quote', async (_, res) => {
+  try {
+    const quote = getQuote();
+    res.send(quote);
+  } catch (ex) {
+    res.status(500).end(ex);
+  }
+});
+
+app.listen(port, () => {
+  console.log(`Listenning at ${port}`);
+});