Mercurial > prosody-modules
annotate mod_statistics_mem/mod_statistics_mem.lua @ 5406:b86d80e21c60
mod_http_oauth2: Validate consistency of response and grant types
Ensure that these correlated fields make sense per RFC 7591 ยง 2.1, even
though we currently only check the response type during authorization.
This could probably all be deleted if (when!) we remove the implicit
grant, since then these things don't make any sense anymore.
author | Kim Alvefur <zash@zash.se> |
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date | Tue, 02 May 2023 16:34:31 +0200 |
parents | 403d5cd924eb |
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mod_statistics_mem: Module that collects memory usage stats from /proc
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1 -- Probably Linux-specific memory statistics |
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2 |
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3 module:set_global(); |
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4 |
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5 local human; |
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6 do |
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7 local tostring = tostring; |
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8 local s_format = string.format; |
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9 local m_floor = math.floor; |
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10 local m_max = math.max; |
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11 local prefixes = "kMGTPEZY"; |
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12 local multiplier = 1024; |
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13 |
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14 function human(num) |
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15 num = tonumber(num) or 0; |
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16 local m = 0; |
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17 while num >= multiplier and m < #prefixes do |
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18 num = num / multiplier; |
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19 m = m + 1; |
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20 end |
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21 |
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22 return s_format("%0."..m_max(0,3-#tostring(m_floor(num))).."f%sB", |
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23 num, m > 0 and (prefixes:sub(m,m) .. "i") or ""); |
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24 end |
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25 end |
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26 |
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27 |
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28 local pagesize = 4096; -- according to getpagesize() |
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29 module:provides("statistics", { |
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30 statistics = { |
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31 memory_total = { -- virtual memory |
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32 get = function () |
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33 local statm, err = io.open"/proc/self/statm"; |
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34 if statm then |
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35 local total = statm:read"*n"; |
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36 statm:close(); |
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37 return total * pagesize; |
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38 else |
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39 module:log("debug", err); |
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40 end |
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41 end; |
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42 tostring = human; |
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43 }; |
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44 memory_rss = { -- actual in-memory data size |
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45 get = function () |
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46 local statm, err = io.open"/proc/self/statm"; |
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47 if statm then |
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48 statm:read"*n"; -- Total size, ignore |
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49 local rss = statm:read"*n"; |
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50 statm:close(); |
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51 return rss * pagesize; |
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52 else |
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53 module:log("debug", err); |
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54 end |
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55 end; |
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56 tostring = human; |
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57 }; |
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58 } |
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59 }); |