docker compose extension demos started

Author: JaimeSalas

01-contenedores/contenedores-vi/docker-compose-extension/.my-app-start/backend/.gitignore

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+node_modules

01-contenedores/contenedores-vi/docker-compose-extension/.my-app-start/backend/Dockerfile

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+FROM node:22-alpine
+
+WORKDIR /app
+
+COPY ["package.json", "package-lock.json*", "./"]
+
+RUN npm install
+
+COPY . .
+
+EXPOSE 8080
+
+CMD npm start

01-contenedores/contenedores-vi/docker-compose-extension/.my-app-start/backend/client.http

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+GET http://localhost:8080/api/topics HTTP/1.1
+
+###
+POST http://localhost:8080/api/topics HTTP/1.1
+content-type: application/json
+
+{
+    "name": "Docker images"    
+}
+
+###
+
+POST http://localhost:8080/api/topics HTTP/1.1
+content-type: application/json
+
+{
+    "name": "Docker volumes"    
+}
+
+###
+
+POST http://localhost:8080/api/topics HTTP/1.1
+content-type: application/json
+
+{
+    "name": "Docker networking"    
+}

01-contenedores/contenedores-vi/docker-compose-extension/.my-app-start/backend/index.js

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+const Topic = require("./models/topics");
+const express = require("express"),
+  mongoose = require("mongoose"),
+  bodyParser = require("body-parser"),
+  cors = require("cors"),
+  app = express();
+
+//configure CORS
+app.use(cors());
+
+//configure app to use body-parser
+app.use(bodyParser.urlencoded({ extended: true }));
+app.use(bodyParser.json());
+
+const port = process.env.PORT || 8080;
+
+const delay = () =>
+  new Promise((res) => {
+    setTimeout(() => {
+      res();
+    }, 1000);
+  });
+
+const connect = async () => {
+  await delay();
+  try {
+    await mongoose.connect("mongodb://mongodb:27017/test");
+    console.log("connected to test");
+  } catch (error) {
+    console.error(error);
+  }
+};
+
+//Routes
+const router = express.Router();
+
+router.post("/topics", async (req, res) => {
+  console.log("[POST] Topics");
+
+  const topic = new Topic();
+  topic.name = req.body.name;
+
+  try {
+    const result = await topic.save();
+    console.log(result);
+    res.send(result);
+  } catch (error) {
+    console.error(error);
+    res.send(JSON.parse(error));
+  }
+});
+
+router.get("/topics", async (_, res) => {
+  console.log("[GET] Topics");
+  console.log(Topic);
+
+  try {
+    const collection = await Topic.find({});
+    const topics = collection.map((t) => ({
+      id: t._id.toString(),
+      name: t.name,
+    }));
+    res.send(topics);
+  } catch (error) {
+    console.error(err);
+    res.send(JSON.parse(error));
+  }
+});
+
+//all routes will be prefixed with /api
+app.use("/api", router);
+
+//start the server
+app.listen(port, async () => {
+  console.log(`Server up and running on port ${port}`);
+  await connect();
+});

01-contenedores/contenedores-vi/docker-compose-extension/.my-app-start/backend/models/topics.js

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+//models/topics.js
+
+const mongoose = require('mongoose'),
+    Schema = mongoose.Schema;
+
+const TopicSchema = new Schema({
+    name: String
+});
+
+module.exports = mongoose.model('Topic', TopicSchema);