Tweaks

database/initdb/0002.sh

@@ -25,7 +25,7 @@ psql -v ON_ERROR_STOP=1 --username pero --password "pero.000" --dbname komponira
     INSERT INTO public.products (id, name, description, image) VALUES (5, 'Kava', 'Kielbasa landjaeger sausage capicola sirloin filet mignon doner t-bone. Swine corned beef turkey hamburger flank pork chop capicola prosciutto venison shoulder strip steak jowl. Tongue pork salami biltong doner chislic andouille ball tip strip steak prosciutto.', 'kava.jpeg');
     INSERT INTO public.products (id, name, description, image) VALUES (6, 'Kava s mlijekom', 'Shoulder bacon flank chuck jowl hamburger swine fatback shank shankle t-bone buffalo leberkas cow.', 'kava-s-mlijekom.jpeg');
     INSERT INTO public.products (id, name, description, image) VALUES (7, 'Kava bez šećera', 'Pork pig prosciutto shoulder, landjaeger drumstick andouille filet mignon pork chop tri-tip bresaola tail.', 'kava-bez-secera.jpeg');
-    INSERT INTO public.products (id, name, description, image) VALUES (8, 'Cappucino', 'Fatback frankfurter jowl capicola. Buffalo short loin pancetta cow ball tip chicken. Pork loin biltong filet mignon rump t-bone kielbasa tail hamburger jowl pancetta andouille short loin.', 'cappucino.jpeg');
+    INSERT INTO public.products (id, name, description, image) VALUES (8, 'Cappuccino', 'Fatback frankfurter jowl capicola. Buffalo short loin pancetta cow ball tip chicken. Pork loin biltong filet mignon rump t-bone kielbasa tail hamburger jowl pancetta andouille short loin.', 'cappuccino.jpeg');
     INSERT INTO public.products (id, name, description, image) VALUES (9, 'Mocca', 'Capicola salami shoulder tri-tip chicken meatball. Tail meatball filet mignon, landjaeger meatloaf sirloin strip steak chicken capicola picanha cow andouille rump shoulder. Chuck buffalo doner short ribs bacon ground round pancetta flank picanha pork loin.', 'mocca.jpeg');
     INSERT INTO public.products (id, name, description, image) VALUES (10, 'Sendvič sa sirom', 'Ball tip beef ribs shank ground round t-bone, strip steak leberkas chuck beef pancetta burgdoggen biltong doner swine brisket. Pork chop tail cow filet mignon salami spare ribs pork belly boudin. ', 'sendvic-sa-sirom.jpeg');
     INSERT INTO public.products (id, name, description, image) VALUES (11, 'Sendvič sa šunkom', 'Alcatra meatball filet mignon bresaola landjaeger, ham tenderloin chicken t-bone cow ham hock sausage fatback. Ground round cow ball tip ham venison beef ribs pork loin shank.', 'sendvic-sa-sunkom.jpeg');

docker-compose.yml

@@ -1,3 +1,5 @@
+version: "3.8"
+
 services:
     db:
         build:
@@ -18,13 +20,49 @@ services:
             context: ./machines
             dockerfile: Dockerfile
         environment:
+            - APPPORT=3000
             - DBHOST=db
             - DBPORT=5432
             - DBNAME=komponiranje
             - DBUSER=pero
             - DBPASSWORD=pero.000
-        ports:
+            - PRODUCTSAPPURL=http://proxy:10000
-            - 3000:3000
         depends_on:
             db:
                 condition: service_healthy
+    products-app:
+        build:
+            context: ./products
+            dockerfile: Dockerfile
+        deploy:
+            mode: replicated
+            replicas: 2
+        environment:
+            - APPPORT=3000
+            - DBHOST=db
+            - DBPORT=5432
+            - DBNAME=komponiranje
+            - DBUSER=pero
+            - DBPASSWORD=pero.000
+        depends_on:
+            db:
+                condition: service_healthy
+    proxy:
+        image: envoyproxy/envoy:v1.28-latest
+        ports:
+            - "10000:10000"
+        volumes:
+            - ./proxy/envoy.yaml:/etc/envoy/envoy.yaml
+        depends_on:
+            - machines-app
+            - products-app
+    frontend-app:
+        build:
+            context: ./frontend
+            dockerfile: Dockerfile
+        environment:
+            - REACT_APP_BACKEND_API_URL="http://localhost:10000"
+        ports:
+            - "8080:80"
+        depends_on:
+            - proxy

frontend/.dockerignore

@@ -0,0 +1,3 @@
+**/node_modules
+**/build
+

frontend/.gitignore

@@ -0,0 +1,23 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

frontend/Dockerfile

@@ -0,0 +1,20 @@
+# stage 1: build node frontend
+FROM node:21 as node-builder
+
+WORKDIR /node-builder
+
+COPY ./package.json .
+COPY ./package-lock.json .
+COPY ./public ./public
+COPY ./src ./src
+
+RUN \
+    npm install && \
+    npm run build
+
+
+# stage 2: build final image
+FROM nginx:1.25-alpine
+
+COPY --from=node-builder /node-builder/build/. /usr/share/nginx/html
+RUN ls -alF /usr/share/nginx/html

frontend/Makefile

@@ -0,0 +1,36 @@
+CONTAINER_NAME=frontend-app
+IMAGE_NAME=komponiranje-frontend-app
+
+
+run:
+	@npm start
+
+
+.PHONY: build
+build:
+	@npm run build
+
+
+upgrade-packages:
+	@go get -u ./...
+
+
+docker-build: clean
+	@docker build \
+		--progress=plain \
+		--tag $(IMAGE_NAME) \
+		.
+
+
+docker-run:
+	@docker run \
+		--name $(CONTAINER_NAME) \
+		--publish 8080:80 \
+		--detach \
+		$(IMAGE_NAME)
+
+
+clean:
+	- @docker stop $(CONTAINER_NAME)
+	- @docker rm $(CONTAINER_NAME)
+	- @docker rmi $(IMAGE_NAME)

frontend/README.md

@@ -0,0 +1,70 @@
+# Getting Started with Create React App
+
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `npm start`
+
+Runs the app in the development mode.\
+Open [http://localhost:3000](http://localhost:3000) to view it in your browser.
+
+The page will reload when you make changes.\
+You may also see any lint errors in the console.
+
+### `npm test`
+
+Launches the test runner in the interactive watch mode.\
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `npm run build`
+
+Builds the app for production to the `build` folder.\
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.\
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `npm run eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can't go back!**
+
+If you aren't satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
+
+Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you're on your own.
+
+You don't have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn't feel obligated to use this feature. However we understand that this tool wouldn't be useful if you couldn't customize it when you are ready for it.
+
+## Learn More
+
+You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
+
+To learn React, check out the [React documentation](https://reactjs.org/).
+
+### Code Splitting
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/code-splitting](https://facebook.github.io/create-react-app/docs/code-splitting)
+
+### Analyzing the Bundle Size
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size](https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size)
+
+### Making a Progressive Web App
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app](https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app)
+
+### Advanced Configuration
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/advanced-configuration](https://facebook.github.io/create-react-app/docs/advanced-configuration)
+
+### Deployment
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/deployment](https://facebook.github.io/create-react-app/docs/deployment)
+
+### `npm run build` fails to minify
+
+This section has moved here: [https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify](https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify)

frontend/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "frontend",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "@emotion/react": "^11.11.3",
+    "@emotion/styled": "^11.11.0",
+    "@mui/material": "^5.15.4",
+    "@testing-library/jest-dom": "^5.17.0",
+    "@testing-library/react": "^13.4.0",
+    "@testing-library/user-event": "^13.5.0",
+    "axios": "^1.6.5",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "react-scripts": "5.0.1",
+    "web-vitals": "^2.1.4"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": [
+      "react-app",
+      "react-app/jest"
+    ]
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}

frontend/public/index.html

@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="Web site created using create-react-app"
+    />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
+    <!--
+      manifest.json provides metadata used when your web app is installed on a
+      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+    <!--
+      Notice the use of %PUBLIC_URL% in the tags above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React App</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>

frontend/public/manifest.json

@@ -0,0 +1,25 @@
+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}

frontend/public/robots.txt

@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

frontend/public/static/products/.comments/coca-cola.jpeg.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<comment version="3.0">
+  <caption>FILE PHOTO: Coca-cola soda is shown on display during a preview of a new Walmart Super Center prior to its opening in Compton, California,</caption>
+  <note>FILE PHOTO: Coca-cola soda is shown on display during a preview of a new Walmart Super Center prior to its opening in Compton, California, U.S., January 10, 2017.  REUTERS/Mike Blake/File Photo</note>
+  <place/>
+  <categories/>
+</comment>

frontend/src/App.js

@@ -0,0 +1,25 @@
+import { ThemeProvider, createTheme } from "@mui/material/styles";
+import Container from "@mui/material/Container";
+import Typography from "@mui/material/Typography";
+import { Home } from "./pages/Home";
+
+const darkTheme = createTheme({
+    palette: {
+        mode: "light",
+    },
+});
+
+function App() {
+    return (
+        <ThemeProvider theme={darkTheme}>
+            <Container fixed>
+                <Typography variant="h2" gutterBottom>
+                    Komponiranje frontend demo
+                </Typography>
+                <Home />
+            </Container>
+        </ThemeProvider>
+    );
+}
+
+export default App;

frontend/src/api/common.js

@@ -0,0 +1,33 @@
+import axios from "axios";
+import { API_URL } from "../const";
+
+export class ApiBase {}
+
+const commonHeaders = {
+    "Content-Type": "application/json",
+    Accept: "application/json",
+    "Access-Control-Allow-Origin": "*",
+    "Access-Control-Max-Age": 60,
+    "x-timezone": Intl.DateTimeFormat().resolvedOptions().timeZone,
+};
+
+export const axiosUnauthorizedInstance = axios.create({
+    baseURL: API_URL,
+    timeout: 5000,
+    headers: commonHeaders,
+});
+
+axiosUnauthorizedInstance.interceptors.response.use(
+    (response) => response,
+    (error) => {
+        return Promise.reject(error);
+    }
+);
+
+export const axiosInstance = axios.create({
+    baseURL: API_URL,
+    timeout: 5000,
+    headers: {
+        ...commonHeaders,
+    },
+});

frontend/src/api/index.js

@@ -0,0 +1 @@
+export { machinesApi } from "./machines";

frontend/src/api/machines.js

@@ -0,0 +1,15 @@
+import { axiosInstance, ApiBase } from "./common";
+
+class MachinesApi extends ApiBase {
+    list = async () => {
+        return axiosInstance.get(`/machines`, {});
+    };
+    get = async (machineId) => {
+        return axiosInstance.get(`/machines/${machineId}`, {});
+    };
+    listProducts = async (machineId) => {
+        return axiosInstance.get(`/machines/${machineId}/products`, {});
+    };
+}
+
+export const machinesApi = new MachinesApi();

frontend/src/components/Machines.js

@@ -0,0 +1,45 @@
+import * as React from "react";
+import { useState } from "react";
+
+import List from "@mui/material/List";
+import ListItem from "@mui/material/ListItem";
+import ListItemButton from "@mui/material/ListItemButton";
+import ListItemText from "@mui/material/ListItemText";
+import Typography from "@mui/material/Typography";
+import Paper from "@mui/material/Paper";
+
+function Machines({ machines, onSelect }) {
+    const [selectedId, setSelectedId] = useState(null);
+
+    const handleOnClick = (machineName, machineId) => {
+        onSelect(machineName, machineId);
+        setSelectedId(machineId);
+    };
+
+    const machineItems = machines.map((machine) => {
+        return (
+            <ListItem key={machine.id} disablePadding>
+                <ListItemButton
+                    selected={selectedId === machine.id}
+                    onClick={(event) => handleOnClick(machine.name, machine.id)}
+                >
+                    <ListItemText primary={machine.name} />
+                </ListItemButton>
+            </ListItem>
+        );
+    });
+
+    return (
+        <>
+            <Typography variant="h4" gutterBottom>
+                Machines
+            </Typography>
+
+            <List>
+                <Paper>{machineItems}</Paper>
+            </List>
+        </>
+    );
+}
+
+export { Machines };

frontend/src/components/ProductCard.js

@@ -0,0 +1,29 @@
+import * as React from "react";
+import Card from "@mui/material/Card";
+import CardContent from "@mui/material/CardContent";
+import CardMedia from "@mui/material/CardMedia";
+import Typography from "@mui/material/Typography";
+import { CardActionArea } from "@mui/material";
+import { PRODUCT_IMAGE_DIR } from "../const";
+
+function ProductCard({ product }) {
+    const productImg = `${PRODUCT_IMAGE_DIR}/${product.image}`;
+
+    return (
+        <Card>
+            <CardActionArea>
+                <CardMedia component="img" height="140" image={productImg} alt={product.name} />
+                <CardContent>
+                    <Typography gutterBottom variant="h5" component="div">
+                        {product.name}
+                    </Typography>
+                    <Typography variant="body2" color="text.secondary">
+                        {product.description}
+                    </Typography>
+                </CardContent>
+            </CardActionArea>
+        </Card>
+    );
+}
+
+export { ProductCard };

frontend/src/components/Products.js

@@ -0,0 +1,28 @@
+import * as React from "react";
+import Grid from "@mui/material/Unstable_Grid2";
+import Typography from "@mui/material/Typography";
+import { ProductCard } from "./ProductCard";
+
+function Products({ machineName, products, onSelect }) {
+    const productItems = products.map((product) => {
+        return (
+            <Grid md={6} key={product.id} sx={{ display: "flex" }}>
+                <ProductCard product={product} />
+            </Grid>
+        );
+    });
+
+    return (
+        <>
+            <Typography variant="h4" gutterBottom>
+                Products - {machineName}
+            </Typography>
+
+            <Grid container spacing={2}>
+                {productItems}
+            </Grid>
+        </>
+    );
+}
+
+export { Products };

frontend/src/const.js

@@ -0,0 +1,2 @@
+export const API_URL = process.env.REACT_APP_BACKEND_API_URL || "http://localhost:10000";
+export const PRODUCT_IMAGE_DIR = "/static/products/";

frontend/src/index.css

@@ -0,0 +1,13 @@
+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}

frontend/src/index.js

@@ -0,0 +1,17 @@
+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+import reportWebVitals from './reportWebVitals';
+
+const root = ReactDOM.createRoot(document.getElementById('root'));
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);
+
+// If you want to start measuring performance in your app, pass a function
+// to log results (for example: reportWebVitals(console.log))
+// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
+reportWebVitals();

frontend/src/pages/Home.js

@@ -0,0 +1,43 @@
+import * as React from "react";
+import { useState, useEffect } from "react";
+
+import Grid from "@mui/material/Unstable_Grid2";
+
+import { machinesApi } from "../api";
+import { Machines } from "../components/Machines";
+import { Products } from "../components/Products";
+
+function Home() {
+    const [machines, setMachines] = useState([]);
+    const [productsData, setProductsData] = useState(null);
+
+    useEffect(() => {
+        machinesApi.list().then((response) => {
+            setMachines(response.data.machines);
+        });
+    }, []);
+
+    const onMachineSelect = (machineName, machineId) => {
+        console.log("selected:", machineName);
+        machinesApi.listProducts(machineId).then((response) => {
+            console.log(response.data.products);
+            setProductsData({
+                machineName,
+                products: response.data.products,
+            });
+        });
+    };
+
+    return (
+        <Grid container spacing={2}>
+            <Grid md={3}>
+                <Machines machines={machines} onSelect={onMachineSelect} />
+            </Grid>
+            <Grid md={9}>
+                {productsData && <Products machineName={productsData.machineName} products={productsData.products} />}
+            </Grid>
+        </Grid>
+    );
+}
+
+export { Home };

frontend/src/reportWebVitals.js

@@ -0,0 +1,13 @@
+const reportWebVitals = onPerfEntry => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

machines/Dockerfile

@@ -1,4 +1,4 @@
-# stage 2: build golang backend
+# stage 1: build golang backend
 FROM golang:1.21-alpine3.19 as go-builder
 
 WORKDIR /go-builder
@@ -13,8 +13,9 @@ RUN \
 # stage 2: build final container
 FROM alpine:3.19
 
-USER $USER
 WORKDIR /app
 COPY --from=go-builder /go-builder/machines-app /app
 
+USER 33
+
 ENTRYPOINT ["/app/machines-app"]

machines/app/api/helpers.go

@@ -0,0 +1,70 @@
+package api
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+func isError(c *gin.Context, err error) bool {
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{
+			"details": err.Error(),
+		})
+		return true
+	}
+	return false
+}
+
+func raiseError(c *gin.Context, errCode int, message string) {
+	c.AbortWithStatusJSON(errCode, gin.H{
+		"details": message,
+	})
+}
+
+func raiseBadRequestError(c *gin.Context, message string) {
+	raiseError(c, http.StatusBadRequest, message)
+}
+
+func raiseNotFoundError(c *gin.Context, message string) {
+	raiseError(c, http.StatusNotFound, message)
+}
+
+func raiseInternalError(c *gin.Context, message string) {
+	c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{
+		"details": "Internal server error. We will we will fix it!",
+	})
+}
+
+func corsMiddleware() gin.HandlerFunc {
+	allowHeaders := [12]string{
+		"Content-Type",
+		"Content-Length",
+		"Accept-Encoding",
+		"X-CSRF-Token",
+		"Authorization",
+		"accept",
+		"origin",
+		"Cache-Control",
+		"X-Requested-With",
+		"x-timezone",
+		"Access-Control-Allow-Origin",
+		"Access-Control-Max-Age",
+	}
+
+	return func(c *gin.Context) {
+		allowOrigin := "*"
+		c.Writer.Header().Set("Access-Control-Allow-Origin", allowOrigin)
+		c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
+		c.Writer.Header().Set("Access-Control-Allow-Headers", strings.Join(allowHeaders[:], ", "))
+		c.Writer.Header().Set("Access-Control-Allow-Methods", "POST, OPTIONS, GET, PUT, DELETE")
+
+		if c.Request.Method == "OPTIONS" {
+			c.AbortWithStatus(http.StatusNoContent)
+			return
+		}
+
+		c.Next()
+	}
+}

machines/app/api/router.go

@@ -2,16 +2,16 @@ package api
 
 import (
 	"fmt"
+	"io"
+	"machines/app/cfg"
 	"machines/app/db"
 	"net/http"
+	"strconv"
 
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"
 )
 
-const HOST = "0.0.0.0"
-const PORT = 3000
-
 func handlePing(c *gin.Context) {
 	c.JSON(
 		http.StatusOK,
@@ -24,30 +24,94 @@ func handlePing(c *gin.Context) {
 func handleGetMachines(dbConn *gorm.DB) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		machines := db.GetMachines(dbConn)
-		fmt.Printf("%+v\n", machines)
 
 		c.JSON(
 			http.StatusOK,
 			GetMachinesResponse{
-				Machines: machines,
+				Machines: *machines,
 			},
 		)
 	}
 }
 
+func handleGetMachine(dbConn *gorm.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		machineId, err := strconv.Atoi(c.Param("machineId"))
+		if err != nil {
+			raiseBadRequestError(c, "Invalid machineId parameter")
+			return
+		}
+
+		machine, err := db.GetMachine(dbConn, machineId)
+		if err != nil {
+			raiseNotFoundError(c, "Machine not found")
+			return
+		}
+
+		c.JSON(
+			http.StatusOK,
+			machine,
+		)
+	}
+}
+
+func handleGetMachineProducts(dbConn *gorm.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		machineId, err := strconv.Atoi(c.Param("machineId"))
+		if err != nil {
+			raiseBadRequestError(c, "Invalid machineId parameter")
+			return
+		}
+
+		machine, err := db.GetMachine(dbConn, machineId)
+		if err != nil {
+			raiseNotFoundError(c, "Machine not found")
+			return
+		}
+
+		url := fmt.Sprintf("%s/products?machineId=%d", cfg.Config.ProductsAppUrl, machine.Id)
+		resp, err := http.Get(url)
+		if err != nil {
+			fmt.Println(err.Error())
+			raiseInternalError(c, err.Error())
+			return
+		}
+
+		if resp.Body != nil {
+			defer resp.Body.Close()
+		}
+
+		body, err := io.ReadAll(resp.Body)
+		if err != nil {
+			fmt.Println(err.Error())
+			raiseInternalError(c, err.Error())
+			return
+		}
+
+		c.Header("Content-Type", "application/json; charset=utf-8")
+		c.Writer.WriteString(string(body))
+	}
+}
+
 func initRouter(dbConn *gorm.DB) *gin.Engine {
 	gin.SetMode(gin.ReleaseMode)
 	router := gin.Default()
+	router.Use(corsMiddleware())
 
-	router.GET("/ping", handlePing)
+	routes := router.Group("/machines")
-	router.GET("/", handleGetMachines(dbConn))
+	{
-	// routes.GET("/machines/:machineId", handleGetMachineDetails)
+		routes.GET("/ping", handlePing)
+		routes.GET("", handleGetMachines(dbConn))
+		routes.GET("/:machineId", handleGetMachine(dbConn))
+		routes.GET("/:machineId/products", handleGetMachineProducts(dbConn))
+	}
 
 	return router
 }
 
 func Serve(dbConn *gorm.DB) {
-	serverAddr := fmt.Sprintf("%s:%d", HOST, PORT)
+	serverAddr := fmt.Sprintf("%s:%d", cfg.Config.AppHost, cfg.Config.AppPort)
+	fmt.Printf("Starting serving on %s\n", serverAddr)
 
 	router := initRouter(dbConn)
 	router.Run(serverAddr)

machines/app/cfg/config.go

@@ -5,11 +5,14 @@ import (
 )
 
 type configStruct struct {
-	DbHost     string `default:"localhost"`
+	AppHost        string `default:"0.0.0.0"`
-	DbPort     int    `default:"55432"`
+	AppPort        int    `default:"3000"`
-	DbName     string `default:"komponiranje"`
+	DbHost         string `default:"localhost"`
-	DbUser     string `default:"pero"`
+	DbPort         int    `default:"55432"`
-	DbPassword string `default:"pero.000"`
+	DbName         string `default:"komponiranje"`
+	DbUser         string `default:"pero"`
+	DbPassword     string `default:"pero.000"`
+	ProductsAppUrl string `default:"http://localhost:3001"`
 }
 
 const ENV_PREFIX = ""

machines/app/db/repository.go

@@ -2,10 +2,21 @@ package db
 
 import "gorm.io/gorm"
 
-func GetMachines(dbConn *gorm.DB) []Machine {
+func GetMachines(dbConn *gorm.DB) *[]Machine {
 	var machines []Machine
 
 	dbConn.Order("name").Find(&machines)
 
-	return machines
+	return &machines
+}
+
+func GetMachine(dbConn *gorm.DB, id int) (*Machine, error) {
+	var machine Machine
+
+	result := dbConn.Order("name").Where("id = ?", id).First(&machine)
+	if result.Error != nil {
+		return nil, result.Error
+	}
+
+	return &machine, nil
 }

machines/go.mod

@@ -4,6 +4,7 @@ go 1.21.5
 
 require (
 	github.com/gin-gonic/gin v1.9.1
+	github.com/kelseyhightower/envconfig v1.4.0
 	gorm.io/driver/postgres v1.5.4
 	gorm.io/gorm v1.25.5
 )
@@ -24,7 +25,6 @@ require (
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/kelseyhightower/envconfig v1.4.0 // indirect
 	github.com/klauspost/cpuid/v2 v2.2.4 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/leodido/go-urn v1.2.4 // indirect

package-lock.json

@@ -0,0 +1,947 @@
+{
+  "name": "komponiranje",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "dependencies": {
+        "@emotion/react": "^11.11.3",
+        "@emotion/styled": "^11.11.0",
+        "@mui/material": "^5.15.4"
+      }
+    },
+    "node_modules/@babel/code-frame": {
+      "version": "7.23.5",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.23.5.tgz",
+      "integrity": "sha512-CgH3s1a96LipHCmSUmYFPwY7MNx8C3avkq7i4Wl3cfa662ldtUe4VM1TPXX70pfmrlWTb6jLqTYrZyT2ZTJBgA==",
+      "dependencies": {
+        "@babel/highlight": "^7.23.4",
+        "chalk": "^2.4.2"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-module-imports": {
+      "version": "7.22.15",
+      "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.22.15.tgz",
+      "integrity": "sha512-0pYVBnDKZO2fnSPCrgM/6WMc7eS20Fbok+0r88fp+YtWVLZrp4CkafFGIp+W0VKw4a22sgebPT99y+FDNMdP4w==",
+      "dependencies": {
+        "@babel/types": "^7.22.15"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-string-parser": {
+      "version": "7.23.4",
+      "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.23.4.tgz",
+      "integrity": "sha512-803gmbQdqwdf4olxrX4AJyFBV/RTr3rSmOj0rKwesmzlfhYNDEs+/iOcznzpNWlJlIlTJC2QfPFcHB6DlzdVLQ==",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-validator-identifier": {
+      "version": "7.22.20",
+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.22.20.tgz",
+      "integrity": "sha512-Y4OZ+ytlatR8AI+8KZfKuL5urKp7qey08ha31L8b3BwewJAoJamTzyvxPR/5D+KkdJCGPq/+8TukHBlY10FX9A==",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/highlight": {
+      "version": "7.23.4",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.23.4.tgz",
+      "integrity": "sha512-acGdbYSfp2WheJoJm/EBBBLh/ID8KDc64ISZ9DYtBmC8/Q204PZJLHyzeB5qMzJ5trcOkybd78M4x2KWsUq++A==",
+      "dependencies": {
+        "@babel/helper-validator-identifier": "^7.22.20",
+        "chalk": "^2.4.2",
+        "js-tokens": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/runtime": {
+      "version": "7.23.8",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.23.8.tgz",
+      "integrity": "sha512-Y7KbAP984rn1VGMbGqKmBLio9V7y5Je9GvU4rQPCPinCyNfUcToxIXl06d59URp/F3LwinvODxab5N/G6qggkw==",
+      "dependencies": {
+        "regenerator-runtime": "^0.14.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/types": {
+      "version": "7.23.6",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.23.6.tgz",
+      "integrity": "sha512-+uarb83brBzPKN38NX1MkB6vb6+mwvR6amUulqAE7ccQw1pEl+bCia9TbdG1lsnFP7lZySvUn37CHyXQdfTwzg==",
+      "dependencies": {
+        "@babel/helper-string-parser": "^7.23.4",
+        "@babel/helper-validator-identifier": "^7.22.20",
+        "to-fast-properties": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@emotion/babel-plugin": {
+      "version": "11.11.0",
+      "resolved": "https://registry.npmjs.org/@emotion/babel-plugin/-/babel-plugin-11.11.0.tgz",
+      "integrity": "sha512-m4HEDZleaaCH+XgDDsPF15Ht6wTLsgDTeR3WYj9Q/k76JtWhrJjcP4+/XlG8LGT/Rol9qUfOIztXeA84ATpqPQ==",
+      "dependencies": {
+        "@babel/helper-module-imports": "^7.16.7",
+        "@babel/runtime": "^7.18.3",
+        "@emotion/hash": "^0.9.1",
+        "@emotion/memoize": "^0.8.1",
+        "@emotion/serialize": "^1.1.2",
+        "babel-plugin-macros": "^3.1.0",
+        "convert-source-map": "^1.5.0",
+        "escape-string-regexp": "^4.0.0",
+        "find-root": "^1.1.0",
+        "source-map": "^0.5.7",
+        "stylis": "4.2.0"
+      }
+    },
+    "node_modules/@emotion/cache": {
+      "version": "11.11.0",
+      "resolved": "https://registry.npmjs.org/@emotion/cache/-/cache-11.11.0.tgz",
+      "integrity": "sha512-P34z9ssTCBi3e9EI1ZsWpNHcfY1r09ZO0rZbRO2ob3ZQMnFI35jB536qoXbkdesr5EUhYi22anuEJuyxifaqAQ==",
+      "dependencies": {
+        "@emotion/memoize": "^0.8.1",
+        "@emotion/sheet": "^1.2.2",
+        "@emotion/utils": "^1.2.1",
+        "@emotion/weak-memoize": "^0.3.1",
+        "stylis": "4.2.0"
+      }
+    },
+    "node_modules/@emotion/hash": {
+      "version": "0.9.1",
+      "resolved": "https://registry.npmjs.org/@emotion/hash/-/hash-0.9.1.tgz",
+      "integrity": "sha512-gJB6HLm5rYwSLI6PQa+X1t5CFGrv1J1TWG+sOyMCeKz2ojaj6Fnl/rZEspogG+cvqbt4AE/2eIyD2QfLKTBNlQ=="
+    },
+    "node_modules/@emotion/is-prop-valid": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@emotion/is-prop-valid/-/is-prop-valid-1.2.1.tgz",
+      "integrity": "sha512-61Mf7Ufx4aDxx1xlDeOm8aFFigGHE4z+0sKCa+IHCeZKiyP9RLD0Mmx7m8b9/Cf37f7NAvQOOJAbQQGVr5uERw==",
+      "dependencies": {
+        "@emotion/memoize": "^0.8.1"
+      }
+    },
+    "node_modules/@emotion/memoize": {
+      "version": "0.8.1",
+      "resolved": "https://registry.npmjs.org/@emotion/memoize/-/memoize-0.8.1.tgz",
+      "integrity": "sha512-W2P2c/VRW1/1tLox0mVUalvnWXxavmv/Oum2aPsRcoDJuob75FC3Y8FbpfLwUegRcxINtGUMPq0tFCvYNTBXNA=="
+    },
+    "node_modules/@emotion/react": {
+      "version": "11.11.3",
+      "resolved": "https://registry.npmjs.org/@emotion/react/-/react-11.11.3.tgz",
+      "integrity": "sha512-Cnn0kuq4DoONOMcnoVsTOR8E+AdnKFf//6kUWc4LCdnxj31pZWn7rIULd6Y7/Js1PiPHzn7SKCM9vB/jBni8eA==",
+      "dependencies": {
+        "@babel/runtime": "^7.18.3",
+        "@emotion/babel-plugin": "^11.11.0",
+        "@emotion/cache": "^11.11.0",
+        "@emotion/serialize": "^1.1.3",
+        "@emotion/use-insertion-effect-with-fallbacks": "^1.0.1",
+        "@emotion/utils": "^1.2.1",
+        "@emotion/weak-memoize": "^0.3.1",
+        "hoist-non-react-statics": "^3.3.1"
+      },
+      "peerDependencies": {
+        "react": ">=16.8.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@emotion/serialize": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/@emotion/serialize/-/serialize-1.1.3.tgz",
+      "integrity": "sha512-iD4D6QVZFDhcbH0RAG1uVu1CwVLMWUkCvAqqlewO/rxf8+87yIBAlt4+AxMiiKPLs5hFc0owNk/sLLAOROw3cA==",
+      "dependencies": {
+        "@emotion/hash": "^0.9.1",
+        "@emotion/memoize": "^0.8.1",
+        "@emotion/unitless": "^0.8.1",
+        "@emotion/utils": "^1.2.1",
+        "csstype": "^3.0.2"
+      }
+    },
+    "node_modules/@emotion/sheet": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/@emotion/sheet/-/sheet-1.2.2.tgz",
+      "integrity": "sha512-0QBtGvaqtWi+nx6doRwDdBIzhNdZrXUppvTM4dtZZWEGTXL/XE/yJxLMGlDT1Gt+UHH5IX1n+jkXyytE/av7OA=="
+    },
+    "node_modules/@emotion/styled": {
+      "version": "11.11.0",
+      "resolved": "https://registry.npmjs.org/@emotion/styled/-/styled-11.11.0.tgz",
+      "integrity": "sha512-hM5Nnvu9P3midq5aaXj4I+lnSfNi7Pmd4EWk1fOZ3pxookaQTNew6bp4JaCBYM4HVFZF9g7UjJmsUmC2JlxOng==",
+      "dependencies": {
+        "@babel/runtime": "^7.18.3",
+        "@emotion/babel-plugin": "^11.11.0",
+        "@emotion/is-prop-valid": "^1.2.1",
+        "@emotion/serialize": "^1.1.2",
+        "@emotion/use-insertion-effect-with-fallbacks": "^1.0.1",
+        "@emotion/utils": "^1.2.1"
+      },
+      "peerDependencies": {
+        "@emotion/react": "^11.0.0-rc.0",
+        "react": ">=16.8.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@emotion/unitless": {
+      "version": "0.8.1",
+      "resolved": "https://registry.npmjs.org/@emotion/unitless/-/unitless-0.8.1.tgz",
+      "integrity": "sha512-KOEGMu6dmJZtpadb476IsZBclKvILjopjUii3V+7MnXIQCYh8W3NgNcgwo21n9LXZX6EDIKvqfjYxXebDwxKmQ=="
+    },
+    "node_modules/@emotion/use-insertion-effect-with-fallbacks": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@emotion/use-insertion-effect-with-fallbacks/-/use-insertion-effect-with-fallbacks-1.0.1.tgz",
+      "integrity": "sha512-jT/qyKZ9rzLErtrjGgdkMBn2OP8wl0G3sQlBb3YPryvKHsjvINUhVaPFfP+fpBcOkmrVOVEEHQFJ7nbj2TH2gw==",
+      "peerDependencies": {
+        "react": ">=16.8.0"
+      }
+    },
+    "node_modules/@emotion/utils": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@emotion/utils/-/utils-1.2.1.tgz",
+      "integrity": "sha512-Y2tGf3I+XVnajdItskUCn6LX+VUDmP6lTL4fcqsXAv43dnlbZiuW4MWQW38rW/BVWSE7Q/7+XQocmpnRYILUmg=="
+    },
+    "node_modules/@emotion/weak-memoize": {
+      "version": "0.3.1",
+      "resolved": "https://registry.npmjs.org/@emotion/weak-memoize/-/weak-memoize-0.3.1.tgz",
+      "integrity": "sha512-EsBwpc7hBUJWAsNPBmJy4hxWx12v6bshQsldrVmjxJoc3isbxhOrF2IcCpaXxfvq03NwkI7sbsOLXbYuqF/8Ww=="
+    },
+    "node_modules/@floating-ui/core": {
+      "version": "1.5.3",
+      "resolved": "https://registry.npmjs.org/@floating-ui/core/-/core-1.5.3.tgz",
+      "integrity": "sha512-O0WKDOo0yhJuugCx6trZQj5jVJ9yR0ystG2JaNAemYUWce+pmM6WUEFIibnWyEJKdrDxhm75NoSRME35FNaM/Q==",
+      "dependencies": {
+        "@floating-ui/utils": "^0.2.0"
+      }
+    },
+    "node_modules/@floating-ui/dom": {
+      "version": "1.5.4",
+      "resolved": "https://registry.npmjs.org/@floating-ui/dom/-/dom-1.5.4.tgz",
+      "integrity": "sha512-jByEsHIY+eEdCjnTVu+E3ephzTOzkQ8hgUfGwos+bg7NlH33Zc5uO+QHz1mrQUOgIKKDD1RtS201P9NvAfq3XQ==",
+      "dependencies": {
+        "@floating-ui/core": "^1.5.3",
+        "@floating-ui/utils": "^0.2.0"
+      }
+    },
+    "node_modules/@floating-ui/react-dom": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/@floating-ui/react-dom/-/react-dom-2.0.5.tgz",
+      "integrity": "sha512-UsBK30Bg+s6+nsgblXtZmwHhgS2vmbuQK22qgt2pTQM6M3X6H1+cQcLXqgRY3ihVLcZJE6IvqDQozhsnIVqK/Q==",
+      "dependencies": {
+        "@floating-ui/dom": "^1.5.4"
+      },
+      "peerDependencies": {
+        "react": ">=16.8.0",
+        "react-dom": ">=16.8.0"
+      }
+    },
+    "node_modules/@floating-ui/utils": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/@floating-ui/utils/-/utils-0.2.1.tgz",
+      "integrity": "sha512-9TANp6GPoMtYzQdt54kfAyMmz1+osLlXdg2ENroU7zzrtflTLrrC/lgrIfaSe+Wu0b89GKccT7vxXA0MoAIO+Q=="
+    },
+    "node_modules/@mui/base": {
+      "version": "5.0.0-beta.31",
+      "resolved": "https://registry.npmjs.org/@mui/base/-/base-5.0.0-beta.31.tgz",
+      "integrity": "sha512-+uNbP3OHJuZVI00WyMg7xfLZotaEY7LgvYXDfONVJbrS+K9wyjCIPNfjy8r9XJn4fbHo/5ibiZqjWnU9LMNv+A==",
+      "dependencies": {
+        "@babel/runtime": "^7.23.7",
+        "@floating-ui/react-dom": "^2.0.5",
+        "@mui/types": "^7.2.13",
+        "@mui/utils": "^5.15.4",
+        "@popperjs/core": "^2.11.8",
+        "clsx": "^2.1.0",
+        "prop-types": "^15.8.1"
+      },
+      "engines": {
+        "node": ">=12.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/mui-org"
+      },
+      "peerDependencies": {
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+        "loose-envify": "cli.js"
+      }
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+      "dependencies": {
+        "callsites": "^3.0.0"
+      },
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+        "node": ">=6"
+      }
+    },
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+        "object-assign": "^4.1.1",
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+        "loose-envify": "^1.1.0"
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+      }
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+        "scheduler": "^0.23.0"
+      },
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+        "react": "^18.2.0"
+      }
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+    },
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+        "@babel/runtime": "^7.5.5",
+        "dom-helpers": "^5.0.1",
+        "loose-envify": "^1.4.0",
+        "prop-types": "^15.6.2"
+      },
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+        "react": ">=16.6.0",
+        "react-dom": ">=16.6.0"
+      }
+    },
+    "node_modules/regenerator-runtime": {
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+    },
+    "node_modules/resolve": {
+      "version": "1.22.8",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.8.tgz",
+      "integrity": "sha512-oKWePCxqpd6FlLvGV1VU0x7bkPmmCNolxzjMf4NczoDnQcIWrAF+cPtZn5i6n+RfD2d9i0tzpKnG6Yk168yIyw==",
+      "dependencies": {
+        "is-core-module": "^2.13.0",
+        "path-parse": "^1.0.7",
+        "supports-preserve-symlinks-flag": "^1.0.0"
+      },
+      "bin": {
+        "resolve": "bin/resolve"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/resolve-from": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-4.0.0.tgz",
+      "integrity": "sha512-pb/MYmXstAkysRFx8piNI1tGFNQIFA3vkE3Gq4EuA1dF6gHp/+vgZqsCGJapvy8N3Q+4o7FwvquPJcnZ7RYy4g==",
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+      }
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+      "peer": true,
+      "dependencies": {
+        "loose-envify": "^1.1.0"
+      }
+    },
+    "node_modules/source-map": {
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+    },
+    "node_modules/supports-color": {
+      "version": "5.5.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+      "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+      "dependencies": {
+        "has-flag": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/supports-preserve-symlinks-flag": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz",
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+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/to-fast-properties": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-2.0.0.tgz",
+      "integrity": "sha512-/OaKK0xYrs3DmxRYqL/yDc+FxFUVYhDlXMhRmv3z915w2HF1tnN1omB354j8VUGO/hbRzyD6Y3sA7v7GS/ceog==",
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/yaml": {
+      "version": "1.10.2",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.10.2.tgz",
+      "integrity": "sha512-r3vXyErRCYJ7wg28yvBY5VSoAF8ZvlcW9/BwUzEtUsjvX/DKs24dIkuwjtuprwJJHsbyUbLApepYTR1BN4uHrg==",
+      "engines": {
+        "node": ">= 6"
+      }
+    }
+  }
+}

package.json

@@ -0,0 +1,7 @@
+{
+  "dependencies": {
+    "@emotion/react": "^11.11.3",
+    "@emotion/styled": "^11.11.0",
+    "@mui/material": "^5.15.4"
+  }
+}

products/.air.toml

@@ -0,0 +1,37 @@
+root = "."
+testdata_dir = "testdata"
+tmp_dir = "tmp"
+
+[build]
+args_bin = []
+bin = "./tmp/main"
+cmd = "go build -o ./tmp/main ./app/."
+delay = 1000
+exclude_dir = ["assets", "tmp", "vendor", "testdata", "build"]
+exclude_file = []
+exclude_regex = ["_test.go"]
+exclude_unchanged = false
+follow_symlink = false
+full_bin = ""
+include_dir = []
+include_ext = ["go", "tpl", "tmpl", "html"]
+kill_delay = "0s"
+log = "build-errors.log"
+send_interrupt = false
+stop_on_error = true
+
+[color]
+app = ""
+build = "yellow"
+main = "magenta"
+runner = "green"
+watcher = "cyan"
+
+[log]
+time = false
+
+[misc]
+clean_on_exit = false
+
+[screen]
+clear_on_rebuild = false

products/.dockerignore

@@ -0,0 +1,3 @@
+**/build
+**/tmp
+**/.env*

products/.gitignore

@@ -0,0 +1,9 @@
+/.vscode
+/.idea
+
+/build
+/tmp
+
+/config.yaml
+/.env.production
+/main

products/Dockerfile

@@ -0,0 +1,21 @@
+# stage 1: build golang backend
+FROM golang:1.21-alpine3.19 as go-builder
+
+WORKDIR /go-builder
+COPY . .
+
+RUN \
+    go mod download && \
+    go mod verify && \
+    go build -v -ldflags "-s -w" -o products-app ./app/main.go
+
+
+# stage 2: build final container
+FROM alpine:3.19
+
+WORKDIR /app
+COPY --from=go-builder /go-builder/products-app /app
+
+USER 33
+
+ENTRYPOINT ["/app/products-app"]

products/Makefile

@@ -0,0 +1,39 @@
+EXEC=products-app
+CONTAINER_NAME=products-app
+IMAGE_NAME=komponiranje-products-app
+
+
+run:
+	@air
+
+
+.PHONY: build
+build:
+	@go build -ldflags "-s -w" -o ./build/${EXEC} ./app/.
+
+
+upgrade-packages:
+	@go get -u ./...
+
+
+docker-build: clean
+	@docker build \
+		--progress=plain \
+		--tag $(IMAGE_NAME) \
+		.
+
+
+docker-run:
+	@docker run \
+		--name $(CONTAINER_NAME) \
+		--publish 3000:3000 \
+		--env CONTAINER_NAME="Awesome API server" \
+		--env DBPORT=55432 \
+		--detach \
+		$(IMAGE_NAME)
+
+
+clean:
+	- @docker stop $(CONTAINER_NAME)
+	- @docker rm $(CONTAINER_NAME)
+	- @docker rmi $(IMAGE_NAME)

products/app/api/dto.go

@@ -0,0 +1,5 @@
+package api
+
+type PingDto struct {
+	Message string `json:"message"`
+}

products/app/api/helpers.go

@@ -0,0 +1,70 @@
+package api
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+func isError(c *gin.Context, err error) bool {
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{
+			"details": err.Error(),
+		})
+		return true
+	}
+	return false
+}
+
+func raiseError(c *gin.Context, errCode int, message string) {
+	c.AbortWithStatusJSON(errCode, gin.H{
+		"details": message,
+	})
+}
+
+func raiseBadRequestError(c *gin.Context, message string) {
+	raiseError(c, http.StatusBadRequest, message)
+}
+
+func raiseNotFoundError(c *gin.Context, message string) {
+	raiseError(c, http.StatusNotFound, message)
+}
+
+func raiseInternalError(c *gin.Context, message string) {
+	c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{
+		"details": "Internal server error. We will we will fix it!",
+	})
+}
+
+func corsMiddleware() gin.HandlerFunc {
+	allowHeaders := [12]string{
+		"Content-Type",
+		"Content-Length",
+		"Accept-Encoding",
+		"X-CSRF-Token",
+		"Authorization",
+		"accept",
+		"origin",
+		"Cache-Control",
+		"X-Requested-With",
+		"x-timezone",
+		"Access-Control-Allow-Origin",
+		"Access-Control-Max-Age",
+	}
+
+	return func(c *gin.Context) {
+		allowOrigin := "*"
+		c.Writer.Header().Set("Access-Control-Allow-Origin", allowOrigin)
+		c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
+		c.Writer.Header().Set("Access-Control-Allow-Headers", strings.Join(allowHeaders[:], ", "))
+		c.Writer.Header().Set("Access-Control-Allow-Methods", "POST, OPTIONS, GET, PUT, DELETE")
+
+		if c.Request.Method == "OPTIONS" {
+			c.AbortWithStatus(http.StatusNoContent)
+			return
+		}
+
+		c.Next()
+	}
+}

products/app/api/response.go

@@ -0,0 +1,7 @@
+package api
+
+import "products/app/db"
+
+type GetProductsResponse struct {
+	Products []db.Product `json:"products"`
+}

products/app/api/router.go

@@ -0,0 +1,93 @@
+package api
+
+import (
+	"fmt"
+	"net/http"
+	"products/app/cfg"
+	"products/app/db"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+)
+
+func handlePing(c *gin.Context) {
+	c.JSON(
+		http.StatusOK,
+		PingDto{
+			Message: "Pong!",
+		},
+	)
+}
+
+func handleGetProducts(dbConn *gorm.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		var (
+			machineId *int = nil
+			err       error
+			mId       int
+		)
+
+		machineIdStr, ok := c.GetQuery("machineId")
+		if ok && len(machineIdStr) > 0 {
+			if mId, err = strconv.Atoi(machineIdStr); err != nil {
+				raiseBadRequestError(c, "Invalid machineId filter")
+				return
+			}
+			machineId = &mId
+		}
+
+		products := db.GetProducts(dbConn, machineId)
+
+		c.JSON(
+			http.StatusOK,
+			GetProductsResponse{
+				Products: *products,
+			},
+		)
+	}
+}
+
+func handleGetProduct(dbConn *gorm.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		productId, err := strconv.Atoi(c.Param("productId"))
+		if err != nil {
+			raiseBadRequestError(c, "Invalid productId parameter")
+			return
+		}
+
+		product, err := db.GetProduct(dbConn, productId)
+		if err != nil {
+			raiseNotFoundError(c, "Product not found")
+			return
+		}
+
+		c.JSON(
+			http.StatusOK,
+			product,
+		)
+	}
+}
+
+func initRouter(dbConn *gorm.DB) *gin.Engine {
+	gin.SetMode(gin.ReleaseMode)
+	router := gin.Default()
+	router.Use(corsMiddleware())
+
+	routes := router.Group("/products")
+	{
+		routes.GET("/ping", handlePing)
+		routes.GET("", handleGetProducts(dbConn))
+		routes.GET("/:productId", handleGetProduct(dbConn))
+	}
+
+	return router
+}
+
+func Serve(dbConn *gorm.DB) {
+	serverAddr := fmt.Sprintf("%s:%d", cfg.Config.AppHost, cfg.Config.AppPort)
+	fmt.Printf("Starting serving on %s\n", serverAddr)
+
+	router := initRouter(dbConn)
+	router.Run(serverAddr)
+}

products/app/cfg/config.go

@@ -0,0 +1,26 @@
+package cfg
+
+import (
+	"github.com/kelseyhightower/envconfig"
+)
+
+type configStruct struct {
+	AppHost    string `default:"0.0.0.0"`
+	AppPort    int    `default:"3001"`
+	DbHost     string `default:"localhost"`
+	DbPort     int    `default:"55432"`
+	DbName     string `default:"komponiranje"`
+	DbUser     string `default:"pero"`
+	DbPassword string `default:"pero.000"`
+}
+
+const ENV_PREFIX = ""
+
+var Config configStruct
+
+func init() {
+	err := envconfig.Process(ENV_PREFIX, &Config)
+	if err != nil {
+		panic(err)
+	}
+}

products/app/db/db.go

@@ -0,0 +1,30 @@
+package db
+
+import (
+	"fmt"
+	"products/app/cfg"
+
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+	gormLogger "gorm.io/gorm/logger"
+)
+
+func ConnectDb() *gorm.DB {
+	var connectionString = fmt.Sprintf("postgres://%s:%s@%s:%d/%s?sslmode=disable",
+		cfg.Config.DbUser,
+		cfg.Config.DbPassword,
+		cfg.Config.DbHost,
+		cfg.Config.DbPort,
+		cfg.Config.DbName,
+	)
+
+	var err error
+	dbConn, err := gorm.Open(postgres.Open(connectionString), &gorm.Config{
+		Logger: gormLogger.Default.LogMode(gormLogger.Info),
+	})
+	if err != nil {
+		panic("Error connecting to database: " + err.Error())
+	}
+
+	return dbConn
+}

products/app/db/models.go

@@ -0,0 +1,12 @@
+package db
+
+type Product struct {
+	Id          int    `json:"id"`
+	Name        string `json:"name"`
+	Description string `json:"description"`
+	Image       string `json:"image"`
+}
+
+func (m *Product) TableName() string {
+	return "products"
+}

products/app/db/repository.go

@@ -0,0 +1,31 @@
+package db
+
+import "gorm.io/gorm"
+
+func GetProducts(dbConn *gorm.DB, machineId *int) *[]Product {
+	var (
+		products []Product
+		query    = dbConn
+	)
+
+	if machineId != nil {
+		query = query.
+			Joins("LEFT JOIN machine_products mp ON mp.product_id = products.id").
+			Where("mp.machine_id = ?", machineId)
+	}
+
+	query.Order("name").Find(&products)
+
+	return &products
+}
+
+func GetProduct(dbConn *gorm.DB, id int) (*Product, error) {
+	var product Product
+
+	result := dbConn.Order("name").Where("id = ?", id).First(&product)
+	if result.Error != nil {
+		return nil, result.Error
+	}
+
+	return &product, nil
+}

products/app/main.go

@@ -0,0 +1,11 @@
+package main
+
+import (
+	"products/app/api"
+	"products/app/db"
+)
+
+func main() {
+	dbConn := db.ConnectDb()
+	api.Serve(dbConn)
+}

products/go.mod

@@ -0,0 +1,46 @@
+module products
+
+go 1.21.5
+
+require (
+	github.com/gin-gonic/gin v1.9.1
+	gorm.io/driver/postgres v1.5.4
+	gorm.io/gorm v1.25.5
+)
+
+require (
+	github.com/bytedance/sonic v1.9.1 // indirect
+	github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.14.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20231201235250-de7065d80cb9 // indirect
+	github.com/jackc/pgx/v5 v5.5.1 // indirect
+	github.com/jackc/puddle/v2 v2.2.1 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/kelseyhightower/envconfig v1.4.0 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.4 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/leodido/go-urn v1.2.4 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
+	github.com/rogpeppe/go-internal v1.12.0 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.11 // indirect
+	golang.org/x/arch v0.3.0 // indirect
+	golang.org/x/crypto v0.18.0 // indirect
+	golang.org/x/net v0.10.0 // indirect
+	golang.org/x/sync v0.6.0 // indirect
+	golang.org/x/sys v0.16.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/protobuf v1.30.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

products/go.sum

@@ -0,0 +1,114 @@
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+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gorm.io/driver/postgres v1.5.4 h1:Iyrp9Meh3GmbSuyIAGyjkN+n9K+GHX9b9MqsTL4EJCo=
+gorm.io/driver/postgres v1.5.4/go.mod h1:Bgo89+h0CRcdA33Y6frlaHHVuTdOf87pmyzwW9C/BH0=
+gorm.io/gorm v1.25.5 h1:zR9lOiiYf09VNh5Q1gphfyia1JpiClIWG9hQaxB/mls=
+gorm.io/gorm v1.25.5/go.mod h1:hbnx/Oo0ChWMn1BIhpy1oYozzpM15i4YPuHDmfYtwg8=
+rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

proxy/envoy.yaml

@@ -0,0 +1,65 @@
+static_resources:
+  listeners:
+    - address:
+        socket_address:
+          address: 0.0.0.0
+          port_value: 10000
+      filter_chains:
+        - filters:
+            - name: envoy.filters.network.http_connection_manager
+              typed_config:
+                "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
+                codec_type: auto
+                stat_prefix: ingress_http
+                route_config:
+                  name: local_route
+                  virtual_hosts:
+                    - name: backend
+                      domains:
+                        - "*"
+                      routes:
+                        - match:
+                            prefix: "/machines"
+                          route:
+                            cluster: machines-app
+                        - match:
+                            prefix: "/products"
+                          route:
+                            cluster: products-app
+                http_filters:
+                  - name: envoy.filters.http.router
+                    typed_config:
+                      "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
+  clusters:
+    - name: machines-app
+      connect_timeout: 0.25s
+      type: strict_dns
+      lb_policy: round_robin
+      load_assignment:
+        cluster_name: machines-app
+        endpoints:
+          - lb_endpoints:
+              - endpoint:
+                  address:
+                    socket_address:
+                      address: machines-app
+                      port_value: 3000
+    - name: products-app
+      connect_timeout: 0.25s
+      type: strict_dns
+      lb_policy: round_robin
+      load_assignment:
+        cluster_name: products-app
+        endpoints:
+          - lb_endpoints:
+              - endpoint:
+                  address:
+                    socket_address:
+                      address: products-app
+                      port_value: 3000
+admin:
+  access_log_path: "/dev/null"
+  address:
+    socket_address:
+      address: 0.0.0.0
+      port_value: 800