prosody-modules
e7b9bc629ecc
mod_statistics/mod_statistics.lua

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mod_statistics/mod_statistics.lua @ 4941:e7b9bc629ecc

mod_rest: Add special handling to catch MAM results from remote hosts Makes MAM queries to remote hosts works. As the comment says, MAM results from users' local archives or local MUCs are returned via origin.send() which is provided in the event and thus already worked. Results from remote hosts go via normal stanza routing and events, which need this extra handling to catch. This pattern of iq-set, message+, iq-result is generally limited to MAM. Closest similar thing might be MUC join, but to really handle that you would need the webhook callback mechanism.
author Kim Alvefur <zash@zash.se>
date Mon, 16 May 2022 19:47:09 +0200
parent 3414:66bda434d476
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 module:set_global();
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2
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3 local stats = module:require("mod_statistics/stats");
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4 local filters = require "util.filters";
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5 local serialize = require "util.serialization".serialize;
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6
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7 local cached_values = {};
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8
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9 local sessions = {};
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10
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11 local function push_stat(conn, name, value)
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12 local value_str = serialize(value);
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13 return conn:write((("STAT %q (%s)\n"):format(name, value_str):gsub("\\\n", "\\n")));
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14 end
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15
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16 local function push_stat_to_all(name, value)
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17 for conn in pairs(sessions) do
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18 push_stat(conn, name, value);
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19 end
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20 end
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21
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22 local session_stats_tpl = ([[{
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23 message_in = %d, message_out = %d;
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24 presence_in = %d, presence_out = %d;
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25 iq_in = %d, iq_out = %d;
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26 bytes_in = %d, bytes_out = %d;
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27 }]]):gsub("%s", "");
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29
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30 local jid_fields = {
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31 c2s = "full_jid";
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32 s2sin = "from_host";
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33 s2sout = "to_host";
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34 component = "host";
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35 };
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36
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37 local function push_session_to_all(session, stats)
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38 local id = tostring(session):match("[a-f0-9]+$"); -- FIXME: Better id? :/
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39 local stanzas_in, stanzas_out = stats.stanzas_in, stats.stanzas_out;
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40 local s = (session_stats_tpl):format(
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41 stanzas_in.message, stanzas_out.message,
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42 stanzas_in.presence, stanzas_out.presence,
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43 stanzas_in.iq, stanzas_out.iq,
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44 stats.bytes_in, stats.bytes_out);
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45 local jid = session[jid_fields[session.type]] or "";
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46 for conn in pairs(sessions) do
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47 conn:write(("SESS %q %q %s\n"):format(id, jid, s));
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48 end
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49 end
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50
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51 local available_stats = stats.stats;
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52 local active_sessions = stats.active_sessions;
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53
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54 -- Handle statistics provided by other modules
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55 local function item_handlers(host)
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56 host = host and (host.."/") or "";
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57
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58 return function (event) -- Added
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59 local stats = event.item.statistics;
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60 local group = host..(stats.name and (stats.name.."::") or "");
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61 for name, stat in pairs(stats) do
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62 available_stats[group..name] = stat;
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63 end
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64 end, function (event) -- Removed
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65 local stats = event.item.statistics;
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66 local group = host..(stats.name and (stats.name.."::") or "");
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67 for name, stat in pairs(stats) do
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68 available_stats[group..name] = nil;
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69 end
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70 end;
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71 end
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72
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73 module:handle_items("statistics-provider", item_handlers());
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74 function module.add_host(module)
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75 module:handle_items("statistics-provider", item_handlers(module.host));
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76 end
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77
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78 -- Network listener
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79 local listener = {};
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80
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81 function listener.onconnect(conn)
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82 sessions[conn] = {};
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83 push_stat(conn, "version", prosody.version);
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84 for name, value in pairs(cached_values) do
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85 push_stat(conn, name, value);
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86 end
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87 conn:write("\n"); -- Signal end of first batch (for non-streaming clients)
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88 end
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89
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90 function listener.onincoming(conn, data)
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91 end
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92
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93 function listener.ondisconnect(conn)
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94 sessions[conn] = nil;
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95 end
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96
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97 function listener.onreadtimeout()
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98 return true;
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99 end
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100
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101 function module.load()
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102 if not(prosody and prosody.arg) then
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103 return;
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104 end
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105 filters.add_filter_hook(stats.filter_hook);
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106
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107 module:add_timer(1, function ()
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108 for stat_name, stat in pairs(available_stats) do
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109 if stat.get then
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110 local cached = cached_values[stat_name];
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111 local new_value = stat.get();
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112 if new_value ~= cached then
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113 push_stat_to_all(stat_name, new_value);
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114 cached_values[stat_name] = new_value;
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115 end
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116 end
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117 end
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118 for session, session_stats in pairs(active_sessions) do
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119 active_sessions[session] = nil;
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120 push_session_to_all(session, session_stats);
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121 end
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122 return 1;
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123 end);
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124
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125 end
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126 function module.unload()
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127 filters.remove_filter_hook(stats.filter_hook);
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128 end
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129 function module.command( args )
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130 local command = args[1];
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131 if command == "top" then
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132 local dir = module:get_directory();
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133 package.path = dir.."/?.lua;"..dir.."/?.lib.lua;"..package.path;
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134 local prosodytop = module:require "prosodytop";
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135 prosodytop.run();
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136 end
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137 end
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138
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139 if prosody and prosody.arg then
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140 module:provides("net", {
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141 default_port = 5782;
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142 listener = listener;
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143 private = true;
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144 });
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145 end