Mercurial > prosody-modules
view mod_presence_dedup/mod_presence_dedup.lua @ 5648:c217f4edfc4f
misc/mtail: Start of an mtail config
Stashing it here in case anyone wants to continue working on it.
Currently it's only counting log messages by level.
Due to the permissions set by systemd on Prosody logs, mtail never
managed to start correctly until permissions were manually relaxed.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sun, 17 Sep 2023 13:36:30 +0200 |
parents | 19924a2c4a48 |
children |
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local st = require "util.stanza"; local cache = require "util.cache"; local add_filter = require "util.filters".add_filter; local cache_size = module:get_option_number("presence_dedup_cache_size", 100); -- stanza equality tests local function attr_eq(a, b) if a == b then return true; end -- unlikely but not impossible for k,v in pairs(a) do if b[k] ~= v then return false; end end for k,v in pairs(b) do if a[k] ~= v then return false; end end return true; end local function st_eq(a, b) if a == b then return true; end if type(b) ~= "table" then return false; end if getmetatable(b) ~= st.stanza_mt then return false; end if a.name ~= b.name then return false; end if #a ~= #b then return false; end if not attr_eq(a.attr, b.attr) then return false; end for i = 1, #a do if not st_eq(a[i], b[i]) then return false; end end return true; end local function dedup_presence(stanza, session) if session.presence_cache and session.presence and getmetatable(stanza) == st.stanza_mt and stanza.name == "presence" and stanza.attr.xmlns == nil and stanza.attr.from then local cached = session.presence_cache:get(stanza.attr.from); if st_eq(stanza, cached) then return nil; else session.presence_cache:set(stanza.attr.from, st.clone(stanza)); end end return stanza; end module:hook("presence/initial", function (event) local session = event.origin; session.presence_cache = cache.new(cache_size); add_filter(session, "stanzas/out", dedup_presence, 90); end);