Conditional Pino Transport at Log Level

[Bhavikpatel576]

Hello everyone,

I'm trying to create a hook in Pino that sends a message to a Slack channel if a specific log level is used. I'm not very familiar with the Pino transport system, so I'm having some trouble figuring out how to achieve this.

From what I understand, the Pino transport setting replaces any existing settings, but I want to keep all my current logging settings intact while also running an asynchronous function if the log level is a warning.

Does anyone have any experience with this and could provide some guidance on how to achieve this? Any help would be greatly appreciated. Thank you!

[couragecowardlydog]

@Bhavikpatel576 , Please take a look at this https://github.com/pinojs/pino/blob/master/docs/transports.md

[couragecowardlydog]

@Bhavikpatel576 ,

We can have a transport, that returns a duplex

log.js

const pino = require('pino')
const transport = pino.transport({
  targets: [
    // only my error logs are pushed to error-transport
    { target: './error-transport.js', level: 'error' },
  ]
})
pino(transport)

error-transport.js

const { PassThrough } = require("stream");
module.exports = async function () {
    const tunnel = new PassThrough();
    tunnel.on("data", (chunk) => {
       // push to your desired destination
    });
    return tunnel
}

[mcollina]

Thanks @couragecowardlydog!

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