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annotate plugins/mod_csi_simple.lua @ 9751:39ee70fbb009

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mod_mam: Perform message expiry based on building an index by date For each day, store a set of users that have new messages. To expire messages, we collect the union of sets of users from dates that fall outside the cleanup range. The previous algoritm did not work well with many users, especially with the default settings.
author Kim Alvefur <zash@zash.se>
date Thu, 03 Jan 2019 17:25:43 +0100
parents 989cf872d5c0
children 57ceffb13963
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1 -- Copyright (C) 2016-2018 Kim Alvefur
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2 --
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3 -- This project is MIT/X11 licensed. Please see the
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4 -- COPYING file in the source package for more information.
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5 --
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6
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7 module:depends"csi"
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8
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9 local jid = require "util.jid";
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10 local st = require "util.stanza";
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11 local dt = require "util.datetime";
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12 local new_queue = require "util.queue".new;
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13
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14 local function new_pump(output, ...)
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15 -- luacheck: ignore 212/self
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16 local q = new_queue(...);
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17 local flush = true;
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18 function q:pause()
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19 flush = false;
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20 end
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21 function q:resume()
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22 flush = true;
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23 return q:flush();
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24 end
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25 local push = q.push;
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26 function q:push(item)
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27 local ok = push(self, item);
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28 if not ok then
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29 q:flush();
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30 output(item, self);
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31 elseif flush then
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32 return q:flush();
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33 end
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34 return true;
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35 end
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36 function q:flush()
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37 local item = self:pop();
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38 while item do
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39 output(item, self);
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40 item = self:pop();
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41 end
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42 return true;
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43 end
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44 return q;
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45 end
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46
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47 local queue_size = module:get_option_number("csi_queue_size", 256);
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48
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49 module:hook("csi-is-stanza-important", function (event)
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50 local stanza = event.stanza;
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51 if not st.is_stanza(stanza) then
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52 return true;
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53 end
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54 local st_name = stanza.name;
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55 if not st_name then return false; end
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56 local st_type = stanza.attr.type;
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57 if st_name == "presence" then
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58 if st_type == nil or st_type == "unavailable" then
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59 return false;
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60 end
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61 return true;
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62 elseif st_name == "message" then
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63 if st_type == "headline" then
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64 return false;
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65 end
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66 local body = stanza:get_child_text("body");
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67 return body;
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68 end
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69 return true;
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70 end, -1);
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71
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72 module:hook("csi-client-inactive", function (event)
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73 local session = event.origin;
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74 if session.pump then
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75 session.pump:pause();
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76 else
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77 local bare_jid = jid.join(session.username, session.host);
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78 local send = session.send;
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79 session._orig_send = send;
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80 local pump = new_pump(session.send, queue_size);
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81 pump:pause();
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82 session.pump = pump;
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83 function session.send(stanza)
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84 if session.state == "active" or module:fire_event("csi-is-stanza-important", { stanza = stanza, session = session }) then
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85 pump:flush();
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86 send(stanza);
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87 else
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88 if st.is_stanza(stanza) and stanza.attr.xmlns == nil and stanza.name ~= "iq" then
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89 stanza = st.clone(stanza);
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90 stanza:add_direct_child(st.stanza("delay", {xmlns = "urn:xmpp:delay", from = bare_jid, stamp = dt.datetime()}));
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91 end
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92 pump:push(stanza);
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93 end
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94 return true;
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95 end
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96 end
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97 end);
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98
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99 module:hook("csi-client-active", function (event)
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100 local session = event.origin;
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101 if session.pump then
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102 session.pump:resume();
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103 end
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104 end);
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105