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switch node demo to mariadb

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“Naeel” 2026-02-21 09:11:10 +04:00
parent 69a6f413bb
commit 417ee230a4
5 changed files with 855 additions and 1601 deletions
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1
.gitignore vendored Normal file
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@ -0,0 +1 @@
node_modules/

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README.md
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@ -1,4 +1,4 @@
# Node + Postgres Demo # Node + MariaDB Demo
Simple Node.js CRUD app that writes to `nubes_test_table` and renders a small HTML UI. Simple Node.js CRUD app that writes to `nubes_test_table` and renders a small HTML UI.
If the input is empty, it inserts "Node did it". If the input is empty, it inserts "Node did it".

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package-lock.json generated
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package.json
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@ -54,7 +54,7 @@
"@loopback/rest-explorer": "^3.3.1", "@loopback/rest-explorer": "^3.3.1",
"@loopback/service-proxy": "^3.2.1", "@loopback/service-proxy": "^3.2.1",
"loopback-connector-rest": "^3.7.0", "loopback-connector-rest": "^3.7.0",
"pg": "^8.18.0", "mysql2": "^3.11.0",
"tslib": "^2.0.0" "tslib": "^2.0.0"
}, },
"devDependencies": { "devDependencies": {

39
server.js
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@ -1,23 +1,20 @@
const http = require("http"); const http = require("http");
const { URL } = require("url"); const { URL } = require("url");
const { Pool } = require("pg"); const mysql = require("mysql2/promise");
const pool = new Pool( const pool = process.env.DATABASE_URL
process.env.DATABASE_URL ? mysql.createPool(process.env.DATABASE_URL)
? { connectionString: process.env.DATABASE_URL } : mysql.createPool({
: { host: process.env.DB_HOST,
host: process.env.PGHOST, port: process.env.DB_PORT || "3306",
port: process.env.PGPORT || "5432", user: process.env.DB_USER,
user: process.env.PGUSER, password: process.env.DB_PASSWORD,
password: process.env.PGPASSWORD, database: process.env.DB_NAME || "postgres",
database: process.env.PGDATABASE || "postgres", });
ssl: process.env.PGSSLMODE === "disable" ? false : { rejectUnauthorized: false },
}
);
async function ensureTable() { async function ensureTable() {
await pool.query( await pool.query(
"CREATE TABLE IF NOT EXISTS nubes_test_table (id SERIAL PRIMARY KEY, test_data TEXT, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP)" "CREATE TABLE IF NOT EXISTS nubes_test_table (id INT AUTO_INCREMENT PRIMARY KEY, test_data TEXT, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP)"
); );
} }
@ -59,10 +56,10 @@ function renderPage(rows, error) {
<html lang="en"> <html lang="en">
<head> <head>
<meta charset="utf-8"> <meta charset="utf-8">
<title>Node + Postgres Demo</title> <title>Node + MariaDB Demo</title>
</head> </head>
<body> <body>
<h3>Node + Postgres Demo</h3> <h3>Node + MariaDB Demo</h3>
${errorHtml} ${errorHtml}
<form method="POST" action="/add"> <form method="POST" action="/add">
<input type="text" name="txt_content" placeholder="New message"> <input type="text" name="txt_content" placeholder="New message">
@ -88,11 +85,11 @@ async function handleRequest(req, res) {
if (req.method === "GET" && url.pathname === "/") { if (req.method === "GET" && url.pathname === "/") {
try { try {
await ensureTable(); await ensureTable();
const result = await pool.query( const [rows] = await pool.query(
"SELECT id, test_data FROM nubes_test_table ORDER BY id DESC LIMIT 20" "SELECT id, test_data FROM nubes_test_table ORDER BY id DESC LIMIT 20"
); );
res.writeHead(200, { "Content-Type": "text/html; charset=utf-8" }); res.writeHead(200, { "Content-Type": "text/html; charset=utf-8" });
res.end(renderPage(result.rows)); res.end(renderPage(rows));
} catch (err) { } catch (err) {
res.writeHead(500, { "Content-Type": "text/html; charset=utf-8" }); res.writeHead(500, { "Content-Type": "text/html; charset=utf-8" });
res.end(renderPage([], err.message)); res.end(renderPage([], err.message));
@ -111,16 +108,16 @@ async function handleRequest(req, res) {
await ensureTable(); await ensureTable();
if (url.pathname === "/add") { if (url.pathname === "/add") {
const content = form.txt_content || "Node did it"; const content = form.txt_content || "Node did it";
await pool.query("INSERT INTO nubes_test_table (test_data) VALUES ($1)", [content]); await pool.query("INSERT INTO nubes_test_table (test_data) VALUES (?)", [content]);
} }
if (url.pathname === "/update") { if (url.pathname === "/update") {
await pool.query("UPDATE nubes_test_table SET test_data=$1 WHERE id=$2", [ await pool.query("UPDATE nubes_test_table SET test_data=? WHERE id=?", [
form.txt_content || "", form.txt_content || "",
form.id, form.id,
]); ]);
} }
if (url.pathname === "/delete") { if (url.pathname === "/delete") {
await pool.query("DELETE FROM nubes_test_table WHERE id=$1", [form.id]); await pool.query("DELETE FROM nubes_test_table WHERE id=?", [form.id]);
} }
res.writeHead(303, { Location: "/" }); res.writeHead(303, { Location: "/" });
res.end(); res.end();