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annotate mod_statistics/stats.lib.lua @ 5448:9d542e86e19a

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mod_http_oauth2: Allow requesting a subset of scopes on token refresh This enables clients to request access tokens with fewer permissions than the grant they were given, reducing impact of token leak. Clients could e.g. request access tokens with some privileges and immediately revoke them after use, or other strategies.
author Kim Alvefur <zash@zash.se>
date Thu, 11 May 2023 21:40:09 +0200
parents 063abaab666f
children
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 c2s_sessions, s2s_sessions;
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31 if prosody and prosody.arg then
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32 c2s_sessions = module:shared("/*/c2s/sessions");
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33 s2s_sessions = module:shared("/*/s2s/sessions");
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34 end
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35
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36 local stats = {
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37 total_users = {
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38 get = function () return it.count(it.keys(bare_sessions)); end
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39 };
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40 total_c2s = {
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41 get = function () return it.count(it.keys(full_sessions)); end
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42 };
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43 total_s2sin = {
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44 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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45 };
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46 total_s2sout = {
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47 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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48 };
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49 total_s2s = {
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50 get = function () return it.count(it.keys(s2s_sessions)); end
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51 };
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52 total_component = {
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53 get = function ()
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54 local count = 0;
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55 for host, host_session in pairs(hosts) do
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56 if host_session.type == "component" then
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57 local c = host_session.modules.component;
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58 if c and c.connected then -- 0.9 only
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59 count = count + 1;
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60 end
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61 end
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62 end
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63 return count;
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64 end
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65 };
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66 up_since = {
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67 get = function () return prosody.start_time; end;
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68 tostring = function (up_since)
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69 return tostring(os.time()-up_since).."s";
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70 end;
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71 };
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72 memory_lua = {
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73 get = function () return math.ceil(collectgarbage("count")*1024); end;
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74 tostring = human;
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75 };
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76 time = {
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77 tostring = function () return os.date("%T"); end;
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78 };
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79 cpu = {
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80 get = function ()
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81 local new_wall, new_clock = get_time(), os.clock();
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82 local pc = 0;
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83 if last_cpu_wall then
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84 pc = 100/((new_wall-last_cpu_wall)/(new_clock-last_cpu_clock));
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85 end
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86 last_cpu_wall, last_cpu_clock = new_wall, new_clock;
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87 return math.ceil(pc);
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88 end;
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89 tostring = "%s%%";
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90 };
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91 };
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92
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93 local memory_update_interval = 60;
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94 if prosody and prosody.arg then
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95 memory_update_interval = module:get_option_number("statistics_meminfo_interval", 60);
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96 end
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97
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98
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99 if has_pposix and pposix.meminfo then
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100
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101 local cached_meminfo, last_cache_update;
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102 local function meminfo()
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103 if not cached_meminfo or (os.time() - last_cache_update) > memory_update_interval then
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104 cached_meminfo = pposix.meminfo();
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105 last_cache_update = os.time();
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106 end
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107 return cached_meminfo;
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108 end
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109
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110 stats.memory_allocated = {
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111 get = function () return math.ceil(meminfo().allocated); end;
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112 tostring = human;
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113 }
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114 stats.memory_used = {
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115 get = function () return math.ceil(meminfo().used); end;
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116 tostring = human;
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117 }
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118 stats.memory_unused = {
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119 get = function () return math.ceil(meminfo().unused); end;
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120 tostring = human;
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121 }
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122 stats.memory_returnable = {
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123 get = function () return math.ceil(meminfo().returnable); end;
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124 tostring = human;
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125 }
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126 end
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127
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128 local add_statistics_filter; -- forward decl
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129 if prosody and prosody.arg then -- ensures we aren't in prosodyctl
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130 setmetatable(active_sessions, {
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131 __index = function ( t, k )
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132 local v = {
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133 bytes_in = 0, bytes_out = 0;
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134 stanzas_in = {
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135 message = 0, presence = 0, iq = 0;
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136 };
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137 stanzas_out = {
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138 message = 0, presence = 0, iq = 0;
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139 };
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140 }
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141 rawset(t, k, v);
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142 return v;
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143 end
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144 });
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145 local filters = require "util.filters";
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146 local function handle_stanza_in(stanza, session)
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147 local s = active_sessions[session].stanzas_in;
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148 local n = s[stanza.name];
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149 if n then
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150 s[stanza.name] = n + 1;
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151 end
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152 return stanza;
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153 end
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154 local function handle_stanza_out(stanza, session)
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155 local s = active_sessions[session].stanzas_out;
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156 local n = s[stanza.name];
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157 if n then
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158 s[stanza.name] = n + 1;
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159 end
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160 return stanza;
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161 end
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162 local function handle_bytes_in(bytes, session)
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163 local s = active_sessions[session];
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164 s.bytes_in = s.bytes_in + #bytes;
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165 return bytes;
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166 end
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167 local function handle_bytes_out(bytes, session)
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168 local s = active_sessions[session];
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169 s.bytes_out = s.bytes_out + #bytes;
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170 return bytes;
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171 end
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172 function add_statistics_filter(session)
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173 filters.add_filter(session, "stanzas/in", handle_stanza_in);
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174 filters.add_filter(session, "stanzas/out", handle_stanza_out);
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175 filters.add_filter(session, "bytes/in", handle_bytes_in);
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176 filters.add_filter(session, "bytes/out", handle_bytes_out);
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177 end
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178 end
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179
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180 return {
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181 stats = stats;
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182 active_sessions = active_sessions;
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183 filter_hook = add_statistics_filter;
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184 };