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annotate mod_statistics/stats.lib.lua @ 2494:d300ae5dba87

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mod_smacks: Fix some bugs with smacks-ack-delayed event triggering. The old code had several flaws which are addressed here. First of all this fixes the if statement guarding the event generation There where some timing glitches addressed by this commit as well.
author tmolitor <thilo@eightysoft.de>
date Sun, 12 Feb 2017 21:23:22 +0100
parents dded110af017
children 063abaab666f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local it = require "util.iterators";
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2 local log = require "util.logger".init("stats");
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3 local has_pposix, pposix = pcall(require, "util.pposix");
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4 local human;
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5 do
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6 local tostring = tostring;
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7 local s_format = string.format;
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8 local m_floor = math.floor;
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9 local m_max = math.max;
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10 local prefixes = "kMGTPEZY";
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11 local multiplier = 1024;
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12
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13 function human(num)
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14 num = tonumber(num) or 0;
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15 local m = 0;
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16 while num >= multiplier and m < #prefixes do
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17 num = num / multiplier;
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18 m = m + 1;
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19 end
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20
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21 return s_format("%0."..m_max(0,3-#tostring(m_floor(num))).."f%sB",
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22 num, m > 0 and (prefixes:sub(m,m) .. "i") or "");
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23 end
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24 end
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26 local last_cpu_wall, last_cpu_clock;
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27 local get_time = require "socket".gettime;
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28
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29 local active_sessions, active_jids = {}, {};
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30 local c2s_sessions, s2s_sessions;
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31 if prosody and prosody.arg then
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32 c2s_sessions, s2s_sessions = module:shared("/*/c2s/sessions", "/*/s2s/sessions");
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33 end
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34
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35 local stats = {
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36 total_users = {
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37 get = function () return it.count(it.keys(bare_sessions)); end
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38 };
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39 total_c2s = {
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40 get = function () return it.count(it.keys(full_sessions)); end
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41 };
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42 total_s2sin = {
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43 get = function () local i = 0; for conn,sess in next,s2s_sessions do if sess.direction == "incoming" then i = i + 1 end end return i end
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44 };
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45 total_s2sout = {
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46 get = function () local i = 0; for conn,sess in next,s2s_sessions do if sess.direction == "outgoing" then i = i + 1 end end return i end
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47 };
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48 total_s2s = {
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49 get = function () return it.count(it.keys(s2s_sessions)); end
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50 };
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51 total_component = {
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52 get = function ()
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53 local count = 0;
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54 for host, host_session in pairs(hosts) do
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55 if host_session.type == "component" then
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56 local c = host_session.modules.component;
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57 if c and c.connected then -- 0.9 only
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58 count = count + 1;
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59 end
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60 end
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61 end
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62 return count;
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63 end
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64 };
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65 up_since = {
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66 get = function () return prosody.start_time; end;
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67 tostring = function (up_since)
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68 return tostring(os.time()-up_since).."s";
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69 end;
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70 };
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71 memory_lua = {
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72 get = function () return math.ceil(collectgarbage("count")*1024); end;
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73 tostring = human;
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74 };
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75 time = {
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76 tostring = function () return os.date("%T"); end;
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77 };
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78 cpu = {
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79 get = function ()
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80 local new_wall, new_clock = get_time(), os.clock();
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81 local pc = 0;
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82 if last_cpu_wall then
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83 pc = 100/((new_wall-last_cpu_wall)/(new_clock-last_cpu_clock));
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84 end
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85 last_cpu_wall, last_cpu_clock = new_wall, new_clock;
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86 return math.ceil(pc);
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87 end;
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88 tostring = "%s%%";
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89 };
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90 };
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91
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92 local memory_update_interval = 60;
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93 if prosody and prosody.arg then
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94 memory_update_interval = module:get_option_number("statistics_meminfo_interval", 60);
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95 end
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96
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97
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98 if has_pposix and pposix.meminfo then
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99
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100 local cached_meminfo, last_cache_update;
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101 local function meminfo()
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102 if not cached_meminfo or (os.time() - last_cache_update) > memory_update_interval then
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103 cached_meminfo = pposix.meminfo();
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104 last_cache_update = os.time();
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105 end
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106 return cached_meminfo;
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107 end
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108
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109 stats.memory_allocated = {
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110 get = function () return math.ceil(meminfo().allocated); end;
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111 tostring = human;
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112 }
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113 stats.memory_used = {
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114 get = function () return math.ceil(meminfo().used); end;
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115 tostring = human;
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116 }
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117 stats.memory_unused = {
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118 get = function () return math.ceil(meminfo().unused); end;
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119 tostring = human;
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120 }
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121 stats.memory_returnable = {
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122 get = function () return math.ceil(meminfo().returnable); end;
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123 tostring = human;
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124 }
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125 end
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126
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127 local add_statistics_filter; -- forward decl
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128 if prosody and prosody.arg then -- ensures we aren't in prosodyctl
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129 setmetatable(active_sessions, {
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130 __index = function ( t, k )
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131 local v = {
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132 bytes_in = 0, bytes_out = 0;
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133 stanzas_in = {
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134 message = 0, presence = 0, iq = 0;
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135 };
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136 stanzas_out = {
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137 message = 0, presence = 0, iq = 0;
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138 };
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139 }
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140 rawset(t, k, v);
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141 return v;
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142 end
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143 });
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144 local filters = require "util.filters";
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145 local function handle_stanza_in(stanza, session)
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146 local s = active_sessions[session].stanzas_in;
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147 local n = s[stanza.name];
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148 if n then
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149 s[stanza.name] = n + 1;
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150 end
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151 return stanza;
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152 end
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153 local function handle_stanza_out(stanza, session)
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154 local s = active_sessions[session].stanzas_out;
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155 local n = s[stanza.name];
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156 if n then
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157 s[stanza.name] = n + 1;
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158 end
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159 return stanza;
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160 end
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161 local function handle_bytes_in(bytes, session)
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162 local s = active_sessions[session];
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163 s.bytes_in = s.bytes_in + #bytes;
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164 return bytes;
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165 end
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166 local function handle_bytes_out(bytes, session)
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167 local s = active_sessions[session];
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168 s.bytes_out = s.bytes_out + #bytes;
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169 return bytes;
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170 end
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171 function add_statistics_filter(session)
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172 filters.add_filter(session, "stanzas/in", handle_stanza_in);
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173 filters.add_filter(session, "stanzas/out", handle_stanza_out);
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174 filters.add_filter(session, "bytes/in", handle_bytes_in);
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175 filters.add_filter(session, "bytes/out", handle_bytes_out);
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176 end
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177 end
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178
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179 return {
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180 stats = stats;
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181 active_sessions = active_sessions;
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182 filter_hook = add_statistics_filter;
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183 };