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annotate mod_throttle_presence/mod_throttle_presence.lua @ 4974:807007913f67

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mod_log_json: Prefer native Lua table.pack over Prosody util.table one Prosody is removing support for Lua 5.1, which was the reason for util.table.pack to exist in the first place, since Lua 5.2+ provides table.pack. In prosody rev 5eaf77114fdb everything was switched over to use table.pack, opening the door for removing util.table.pack at some point. This change here is to prepare for that future eventuality.
author Kim Alvefur <zash@zash.se>
date Mon, 11 Jul 2022 20:08:41 +0200
parents 552faee596b7
children
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d8c50448d0e7 mod_throttle_presence: Remove timer support, depend on mod_csi to enable/disable. Untested, but the previous version was definitely broken anyway.
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parents: 162
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1 local filters = require "util.filters";
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2 local st = require "util.stanza";
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3
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4 module:depends("csi");
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5
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6 local function presence_filter(stanza, session)
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7 if getmetatable(stanza) ~= st.stanza_mt then
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8 return stanza; -- Things we don't want to touch
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9 end
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10 if stanza._flush then
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11 stanza._flush = nil;
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12 return stanza;
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13 end
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parents: 162
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14 local buffer = session.presence_buffer;
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15 local from = stanza.attr.from;
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16 if stanza.name == "presence" and (stanza.attr.type == nil or stanza.attr.type == "unavailable") then
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17 module:log("debug", "Buffering presence stanza from %s to %s", stanza.attr.from, session.full_jid);
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18 buffer[stanza.attr.from] = st.clone(stanza);
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19 return nil; -- Drop this stanza (we've stored it for later)
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20 else
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21 local cached_presence = buffer[stanza.attr.from];
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22 if cached_presence then
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23 module:log("debug", "Important stanza for %s from %s, flushing presence", session.full_jid, from);
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24 stanza._flush = true;
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25 cached_presence._flush = true;
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26 session.send(cached_presence);
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27 buffer[stanza.attr.from] = nil;
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28 end
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29 end
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30 return stanza;
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31 end
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33 local function throttle_session(event)
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34 local session = event.origin;
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parents: 162
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35 if session.presence_buffer then return; end
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parents: 162
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36 module:log("debug", "Suppressing presence updates to %s", session.full_jid);
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parents: 162
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37 session.presence_buffer = {};
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parents: 162
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38 filters.add_filter(session, "stanzas/out", presence_filter);
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parents: 162
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39 end
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parents: 162
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41 local function restore_session(event)
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42 local session = event.origin;
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parents: 162
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43 if not session.presence_buffer then return; end
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parents: 162
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44 filters.remove_filter(session, "stanzas/out", presence_filter);
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parents: 162
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45 module:log("debug", "Flushing buffer for %s", session.full_jid);
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parents: 162
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46 for jid, presence in pairs(session.presence_buffer) do
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parents: 162
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47 session.send(presence);
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parents: 162
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48 end
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parents: 162
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49 session.presence_buffer = nil;
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parents: 162
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50 end
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parents: 162
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52 module:hook("csi-client-inactive", throttle_session);
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53 module:hook("csi-client-active", restore_session);