Hey there, JavaScript wizards! Ready to level up your Gemini game with webhooks? Let's dive right in and get those real-time updates flowing!
Webhooks are like your app's personal news reporters, delivering the latest scoop from Gemini straight to your server. They're essential for keeping your app in sync with what's happening in Gemini-land without constantly pestering their API.
Before we jump in, make sure you've got:
Got all that? Great! Let's build something cool.
First things first, we need to give those webhooks a place to land. Let's whip up a quick Express server:
const express = require('express'); const app = express(); const PORT = process.env.PORT || 3000; app.use(express.json()); app.post('/webhook', (req, res) => { // We'll handle the webhook payload here console.log('Webhook received!', req.body); res.sendStatus(200); }); app.listen(PORT, () => console.log(`Webhook server is listening on port ${PORT}`));
Boom! You've got a basic server ready to catch those webhooks.
Now, hop over to your Gemini dashboard and find the webhook settings. You'll want to:
https://your-server.com/webhook
)When Gemini sends a webhook your way, you'll want to make sure it's legit. Let's add some signature verification to our webhook route:
const crypto = require('crypto'); app.post('/webhook', (req, res) => { const payload = req.body; const signature = req.headers['x-gemini-signature']; const expectedSignature = crypto .createHmac('sha256', process.env.GEMINI_API_SECRET) .update(JSON.stringify(payload)) .digest('hex'); if (signature !== expectedSignature) { return res.status(401).send('Invalid signature'); } // Process the webhook payload console.log('Verified webhook received!', payload); res.sendStatus(200); });
Now that we've got verified webhooks coming in, let's do something with them:
function processWebhook(payload) { switch(payload.type) { case 'order_created': handleNewOrder(payload); break; case 'order_filled': updateOrderStatus(payload); break; // Add more cases as needed default: console.log('Unhandled event type:', payload.type); } } app.post('/webhook', (req, res) => { // ... verification code ... processWebhook(req.body); res.sendStatus(200); });
Sometimes things go wrong. Let's make sure we handle errors gracefully:
app.post('/webhook', async (req, res) => { try { // ... verification and processing code ... res.sendStatus(200); } catch (error) { console.error('Error processing webhook:', error); res.status(500).send('Internal Server Error'); // Implement retry logic here if needed } });
Gemini provides tools to test your webhook implementation. Use them! And don't forget to add some logging:
const winston = require('winston'); const logger = winston.createLogger({ level: 'info', format: winston.format.json(), transports: [ new winston.transports.File({ filename: 'webhook.log' }) ] }); app.post('/webhook', (req, res) => { logger.info('Received webhook', { payload: req.body }); // ... rest of the webhook handling code ... });
And there you have it! You're now ready to receive and process webhooks from Gemini like a pro. Remember, this is just the beginning – there's always room to optimize and expand your webhook implementation as your needs grow.
Happy coding, and may your trades be ever in your favor! 🚀💎