How to publish message in Google Pub/Sub from Firebase Cloud Function?

Question

I wrote a function that receive a http request and send a e-mail. But, I would like receive a http request and send a pub message. The problem is that the documentation is not clear. How I do that?

This is my actual code.

exports.weeklyEmail = functions.https.onRequest((req,res) => {
const email = '****@gmail.com'

console.log('Sending e-mail')

const mailOptions = {
    to: email,
    from: '****@alunos.utfpr.edu.br',
    subject: 'Teste',
    text: 'Conteudo do email '
}   

mailTransport.sendMail(mailOptions).then(
    () => {         
        res.send('Email sent')
    }
).catch(error => {
    res.send(error)
})
})

Answer 1

As I understand, you wish to send a message to Pub/Sub from your Firebase Cloud Functions implementation.

You can easily use the Node.js Pub/Sub client library, with already defined functionalities, like publish.

Or, if you prefer, you can build your own client, directly calling the REST API for Google Cloud Pub/Sub. There's also a RPC reference if it suits your needs better.

---

You won't need

information like host, port, id, passwd of broker

as the mentioned client, or your REST API requests will require authentication .