Mercurial > prosody-modules

annotate mod_presence_cache/mod_presence_cache.lua @ 2146:39d958f4a0c3

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mod_presence_cache: Remove caching of full presence
author Kim Alvefur <zash@zash.se>
date Fri, 01 Apr 2016 15:15:56 +0200
parents f965f86a5cad
children ed2bb50d4f91
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rev   line source
1952
9d0c33ebbcc5 mod_presence_cache: Cache incoming presence broadcasts in order to get clients up to speed with who is online faster
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 local is_contact_subscribed = require"core.rostermanager".is_contact_subscribed;
9d0c33ebbcc5 mod_presence_cache: Cache incoming presence broadcasts in order to get clients up to speed with who is online faster
Kim Alvefur <zash@zash.se>
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2 local jid_split = require"util.jid".split;
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3 local jid_bare = require"util.jid".bare;
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Kim Alvefur <zash@zash.se>
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4 local st = require"util.stanza";
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Kim Alvefur <zash@zash.se>
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5 local datetime = require"util.datetime";
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6
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7 local presence_cache = {}; -- Reload to empty
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8
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9 local function cache_hook(event)
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10 local origin, stanza = event.origin, event.stanza;
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11 local typ = stanza.attr.type;
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12 module:log("debug", "Cache hook, got %s from a %s", stanza:top_tag(), origin.type);
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f965f86a5cad mod_presence_cache: Check stanzas only from s2sin (not needed, even with mod_bidi)
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13 if origin.type == "s2sin" and ( typ == nil or typ == "unavailable" ) then
1952
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14 local from_jid = stanza.attr.from;
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15 local from_bare = jid_bare(from_jid);
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16 local username = jid_split(stanza.attr.to);
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17
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18 if not is_contact_subscribed(username, module.host, from_bare) then
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19 module:log("debug", "Not in their roster", origin.username);
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20 return;
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21 end
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22
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23 local user_presence_cache = presence_cache[username];
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24 if not user_presence_cache then
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25 user_presence_cache = {};
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26 presence_cache[username] = user_presence_cache;
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27 end
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28
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29 local contact_presence_cache = user_presence_cache[from_bare];
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30 if not contact_presence_cache then
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31 contact_presence_cache = {};
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32 user_presence_cache[from_bare] = contact_presence_cache;
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33 end
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34
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35 if typ == "unavailable" then
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Kim Alvefur <zash@zash.se>
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36 contact_presence_cache[from_jid] = nil;
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37 if next(contact_presence_cache) == nil or from_jid == from_bare then
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Kim Alvefur <zash@zash.se>
parents:
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38 user_presence_cache[from_bare] = nil;
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parents:
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39 if next(user_presence_cache) == nil then
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Kim Alvefur <zash@zash.se>
parents:
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40 presence_cache[username] = nil;
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41 end
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42 end
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43 else -- only cache binary state
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44 contact_presence_cache[from_jid] = datetime.datetime();
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45 end
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46 end
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47 end
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48
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49 module:hook("presence/bare", cache_hook, 10);
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50 -- module:hook("presence/full", cache_hook, 10);
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51
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52 local function answer_probe_from_cache(event)
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Kim Alvefur <zash@zash.se>
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53 local origin, stanza = event.origin, event.stanza;
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54 if stanza.attr.type ~= "probe" then return; end
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55 local contact_bare = stanza.attr.to;
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56
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57 local user_presence_cache = presence_cache[origin.username];
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58 if not user_presence_cache then return; end
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59
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60 local contact_presence_cache = user_presence_cache[contact_bare];
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61 if not contact_presence_cache then return; end
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62
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63 local user_jid = stanza.attr.from;
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64 for jid, presence in pairs(contact_presence_cache) do
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65 module:log("debug", "Sending cached presence from %s", jid);
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66 if presence == true then
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67 presence = st.presence({ from = user_jid, from = jid });
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68 elseif type(presence) == "string" then -- a timestamp
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69 presence = st.presence({ from = user_jid, from = jid })
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70 :tag("delay", { xmlns = "urn:xmpp:delay", from = module.host, stamp = presence }):up();
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71 end
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72 origin.send(presence);
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73 end
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74 end
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75
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76 module:hook("pre-presence/bare", answer_probe_from_cache, 10);
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77
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78 module:add_timer(3600, function (now)
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79 local older = datetime.datetime(now - 7200);
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80 for username, user_presence_cache in pairs(presence_cache) do
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81 for contact, contact_presence_cache in pairs(user_presence_cache) do
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Kim Alvefur <zash@zash.se>
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82 for jid, presence in pairs(contact_presence_cache) do
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parents:
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83 if presence == true or (type(presence) == "string" and presence < older) then
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84 contact_presence_cache[jid] = nil;
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85 end
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86 end
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87 if next(contact_presence_cache) == nil then
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88 user_presence_cache[contact] = nil;
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89 end
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90 end
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91 if next(user_presence_cache) == nil then
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92 presence_cache[username] = nil;
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93 end
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94 end
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Kim Alvefur <zash@zash.se>
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95 return 3600;
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96 end);
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97