view mod_graceful_shutdown/README.markdown @ 5338:03044a6f5f4c

mod_service_outage_status: XEP-0455: Service Outage Status Only the out of band part so far. The in-band pubsub part would need '+notify' support in mod_pubsub, since mod_pep does not serve the bare-host-JID. All the hard parts of this XEP is elsewhere, i.e. hosting the document somewhere reliable.
author Kim Alvefur <zash@zash.se>
date Mon, 10 Apr 2023 13:24:03 +0200
parents 999e7cb7f6d9
children
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::: {.alert .alert-warning}
This module is an experiment about a more graceful shutdown process.

Graceful shutdown has now been implemented in Prosody trunk and will be
part 0.12. See [issue #1225](https://issues.prosody.im/1225) for
details.
:::

Why
===

When shutting down, a number of sessions, connections and other things
are teared down. Due to all these things happening very quickly,
sometimes e.g. client unavailable notifications don't make it to all
remote contacts because the server-to-server connections are teared down
just after.

How
===

This module works by breaking the shutdown process into separate steps
with a brief pause between them.

It goes something like this

1.  Stop accepting new client connections.
2.  Close all client connections.
3.  Fire event for everything else.
4.  Tell `net.server` to quit the main loop.
5.  ???
6.  Still here? Kill itself.