Learn GOOGLE-CLOUD-FUNCTIONS with Real Code Examples

# gcf/demo/index.js
exports.helloWorld = (req, res) => {
    res.status(200).send('Hello, Google Cloud!');
};

A simple Google Cloud Function responding with 'Hello, Google Cloud!' to HTTP requests.

# gcf/demo/query.js
exports.queryFunction = (req, res) => {
    const name = req.query.name || 'Guest';
    res.status(200).send(`Hello, ${name}!`);
};

Reads query parameters and responds with a personalized message.

# gcf/demo/json.js
exports.jsonFunction = (req, res) => {
    res.status(200).json({ message: 'Hello, JSON!' });
};

Returns a JSON object in the response body.

# gcf/demo/post.js
exports.postFunction = (req, res) => {
    const data = req.body;
    res.status(200).send(`Received: ${data.input}`);
};

Handles POST requests and parses JSON body.

# gcf/demo/env.js
exports.envFunction = (req, res) => {
    const secret = process.env.MY_SECRET || 'No Secret';
    res.status(200).send(`Secret is: ${secret}`);
};

Uses environment variables in the function.

# gcf/demo/redirect.js
exports.redirectFunction = (req, res) => {
    res.redirect(302, 'https://cloud.google.com/');
};

Responds with a redirect to another URL.

# gcf/demo/error.js
exports.errorFunction = (req, res) => {
    try {
        throw new Error('Something went wrong');
    } catch(err) {
        res.status(500).send(err.message);
    }
};

Demonstrates returning an error response.

# gcf/demo/delay.js
exports.delayFunction = async (req, res) => {
    await new Promise(resolve => setTimeout(resolve, 1000));
    res.status(200).send('Delayed Hello!');
};

Returns a response after a simulated delay.

# gcf/demo/fetch.js
const fetch = require('node-fetch');
exports.fetchFunction = async (req, res) => {
    const response = await fetch('https://api.github.com');
    const data = await response.json();
    res.status(200).json(data);
};

Fetches data from an external API and returns it.

# gcf/demo/headers.js
exports.headersFunction = (req, res) => {
    res.set('X-Custom-Header', 'GCF');
    res.status(200).send('Hello with headers');
};

Returns custom HTTP headers in the response.