Should we include an unhandledRejection handler?

[xjamundx]

We currently have an uncaughtException handler of sorts in, https://github.com/krakenjs/kraken-js/blob/v2.x/middleware/shutdown.js

Would it be possibly to add a similar unhandledException handler? Would we want to do that here.

Now that promises are baked into node, I'm sure we'll see these being used more often.

[tlivings]

The complexity I see here is that while we can capture unhandled exceptions in a domain, responding back to the client and beginning a graceful shutdown, an unhandled rejection will not be caught in the domain. Therefore adding a process.on('unhandledRejection') isn't going to be super useful from a general usage perspective.

[xjamundx]

That's a fair point!

[grawk]

From experimentation I've seen that adding an unhandledRejection listener which emits SIGTERM will allow the server to drain traffic and shutdown gracefully.