annotate mod_graceful_shutdown/README.markdown @ 4980:da151f9af861

replaced 'session' with 'origin' in push_disable session is not defined in this function, trying to access it leads to an error. The correct reference seems to be 'origin'. (This may have come about by copying from the similar code in process_stanza_queue.)
author arcseconds
date Sat, 30 Jul 2022 21:07:47 +1200
parents 999e7cb7f6d9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4898
999e7cb7f6d9 mod_graceful_shutdown: Add a banner saying no longer needed with trunk
Kim Alvefur <zash@zash.se>
parents: 2818
diff changeset
1 ::: {.alert .alert-warning}
2170
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2 This module is an experiment about a more graceful shutdown process.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3
4898
999e7cb7f6d9 mod_graceful_shutdown: Add a banner saying no longer needed with trunk
Kim Alvefur <zash@zash.se>
parents: 2818
diff changeset
4 Graceful shutdown has now been implemented in Prosody trunk and will be
999e7cb7f6d9 mod_graceful_shutdown: Add a banner saying no longer needed with trunk
Kim Alvefur <zash@zash.se>
parents: 2818
diff changeset
5 part 0.12. See [issue #1225](https://issues.prosody.im/1225) for
999e7cb7f6d9 mod_graceful_shutdown: Add a banner saying no longer needed with trunk
Kim Alvefur <zash@zash.se>
parents: 2818
diff changeset
6 details.
999e7cb7f6d9 mod_graceful_shutdown: Add a banner saying no longer needed with trunk
Kim Alvefur <zash@zash.se>
parents: 2818
diff changeset
7 :::
999e7cb7f6d9 mod_graceful_shutdown: Add a banner saying no longer needed with trunk
Kim Alvefur <zash@zash.se>
parents: 2818
diff changeset
8
2170
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
9 Why
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
10 ===
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
11
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
12 When shutting down, a number of sessions, connections and other things
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
13 are teared down. Due to all these things happening very quickly,
2818
88474dd1af48 Various READMEs: s/eg/e.g.g/
Kim Alvefur <zash@zash.se>
parents: 2170
diff changeset
14 sometimes e.g. client unavailable notifications don't make it to all
2170
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
15 remote contacts because the server-to-server connections are teared down
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16 just after.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18 How
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19 ===
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
20
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21 This module works by breaking the shutdown process into separate steps
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
22 with a brief pause between them.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 It goes something like this
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26 1. Stop accepting new client connections.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
27 2. Close all client connections.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
28 3. Fire event for everything else.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
29 4. Tell `net.server` to quit the main loop.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
30 5. ???
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
31 6. Still here? Kill itself.
4652a112a4ba mod_graceful_shutdown: Experiment in improving the shutdown experience
Kim Alvefur <zash@zash.se>
parents:
diff changeset
32