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annotate mod_statistics/stats.lib.lua @ 1077:b73d44afdafa

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mod_statistics/stats.lib.lua: Improve memory stats (use pposix.meminfo() if available)
author Kim Alvefur <zash@zash.se>
date Sat, 15 Jun 2013 20:57:18 +0100
parents 5616cab8b6d6
children 3af947e2e6d4
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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25
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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 s2s_sessions = module:shared"/*/s2s/sessions";
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31 local c2s_sessions = module:shared"/*/c2s/sessions";
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32
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33 local stats = {
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34 total_users = {
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35 get = function () return it.count(it.keys(bare_sessions)); end
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36 };
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37 total_c2s = {
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38 get = function () return it.count(it.keys(full_sessions)); end
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39 };
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40 total_s2sin = {
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41 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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42 };
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43 total_s2sout = {
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44 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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45 };
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46 total_s2s = {
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47 get = function () return it.count(it.keys(s2s_sessions)); end
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48 };
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49 total_component = {
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50 get = function ()
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51 local count = 0;
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52 for host, host_session in pairs(hosts) do
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53 if host_session.type == "component" then
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54 local c = host_session.modules.component;
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55 if c and c.connected then -- 0.9 only
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56 count = count + 1;
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57 end
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58 end
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59 end
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60 return count;
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61 end
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62 };
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63 up_since = {
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64 get = function () return prosody.start_time; end;
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65 tostring = function (up_since)
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66 return tostring(os.time()-up_since).."s";
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67 end;
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68 };
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69 memory_lua = {
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70 get = function () return math.ceil(collectgarbage("count")*1024); end;
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71 tostring = human;
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72 };
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73 time = {
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74 tostring = function () return os.date("%T"); end;
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75 };
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76 cpu = {
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77 get = function ()
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78 local new_wall, new_clock = get_time(), os.clock();
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79 local pc = 0;
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80 if last_cpu_wall then
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81 pc = 100/((new_wall-last_cpu_wall)/(new_clock-last_cpu_clock));
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82 end
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83 last_cpu_wall, last_cpu_clock = new_wall, new_clock;
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84 return math.ceil(pc);
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85 end;
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86 tostring = "%s%%";
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87 };
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88 };
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89
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90 if has_pposix and pposix.meminfo then
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91 stats.memory_allocated = {
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92 get = function () return math.ceil(pposix.meminfo().allocated); end;
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93 tostring = human;
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94 }
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95 stats.memory_used = {
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96 get = function () return math.ceil(pposix.meminfo().used); end;
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97 tostring = human;
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98 }
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99 stats.memory_unused = {
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100 get = function () return math.ceil(pposix.meminfo().unused); end;
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101 tostring = human;
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102 }
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103 stats.memory_returnable = {
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104 get = function () return math.ceil(pposix.meminfo().returnable); end;
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105 tostring = human;
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106 }
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107 end
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108
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109 local pagesize = 4096;
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110 stats.memory_total = {
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111 get = function ()
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112 local statm, err = io.open"/proc/self/statm";
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113 if statm then
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114 local total = statm:read"*n";
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115 statm:close();
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116 return total * pagesize;
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117 else
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118 module:log("debug", err);
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119 end
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120 end;
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121 tostring = human;
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122 };
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123 stats.memory_rss = {
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124 get = function ()
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125 local statm, err = io.open"/proc/self/statm";
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126 if statm then
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127 statm:read"*n"; -- Total size, ignore
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128 local rss = statm:read"*n";
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129 statm:close();
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130 return rss * pagesize;
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131 else
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132 module:log("debug", err);
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133 end
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134 end;
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135 tostring = human;
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136 };
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137
1072
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138 local add_statistics_filter; -- forward decl
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139 if prosody and prosody.arg then -- ensures we aren't in prosodyctl
1072
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140 setmetatable(active_sessions, {
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141 __index = function ( t, k )
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142 local v = {
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143 bytes_in = 0, bytes_out = 0;
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144 stanzas_in = {
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145 message = 0, presence = 0, iq = 0;
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146 };
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147 stanzas_out = {
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148 message = 0, presence = 0, iq = 0;
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149 };
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150 }
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151 rawset(t, k, v);
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152 return v;
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153 end
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154 });
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155 local filters = require "util.filters";
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156 local function handle_stanza_in(stanza, session)
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157 local s = active_sessions[session].stanzas_in;
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158 local n = s[stanza.name];
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159 if n then
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160 s[stanza.name] = n + 1;
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161 end
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162 return stanza;
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163 end
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164 local function handle_stanza_out(stanza, session)
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165 local s = active_sessions[session].stanzas_out;
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166 local n = s[stanza.name];
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167 if n then
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168 s[stanza.name] = n + 1;
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169 end
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170 return stanza;
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171 end
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172 local function handle_bytes_in(bytes, session)
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173 local s = active_sessions[session];
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174 s.bytes_in = s.bytes_in + #bytes;
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175 return bytes;
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176 end
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177 local function handle_bytes_out(bytes, session)
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178 local s = active_sessions[session];
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179 s.bytes_out = s.bytes_out + #bytes;
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180 return bytes;
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181 end
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182 function add_statistics_filter(session)
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183 filters.add_filter(session, "stanzas/in", handle_stanza_in);
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184 filters.add_filter(session, "stanzas/out", handle_stanza_out);
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185 filters.add_filter(session, "bytes/in", handle_bytes_in);
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186 filters.add_filter(session, "bytes/out", handle_bytes_out);
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187 end
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188 end
4dbdb1b465e8 mod_statistics: Initial version, and a rough 'prosodyctl mod_statistics top'
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189
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190 return {
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191 stats = stats;
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192 active_sessions = active_sessions;
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193 filter_hook = add_statistics_filter;
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194 };