prosody
61759372be26
util/logger.lua

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util/logger.lua @ 11707:61759372be26

mod_s2s: Clone 'extra' data to let resolvers add more to it This way 'extra' is unique for each connect() instance, making it safer to mutate it, while inheriting the global settings. See 926d53af9a7a for some more context.
author Kim Alvefur <zash@zash.se>
date Sun, 18 Jul 2021 21:53:26 +0200
parent 8556:5800f0c7afd6
child 12394:86d6b069b892
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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b1885732e979 GPL->MIT!
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8 -- luacheck: ignore 213/level
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9
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10 local pairs = pairs;
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11 local ipairs = ipairs;
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12 local require = require;
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13
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14 local _ENV = nil;
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15 -- luacheck: std none
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17 local level_sinks = {};
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18
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19 local make_logger;
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20
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21 local function init(name)
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22 local log_debug = make_logger(name, "debug");
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23 local log_info = make_logger(name, "info");
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24 local log_warn = make_logger(name, "warn");
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25 local log_error = make_logger(name, "error");
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27 return function (level, message, ...)
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28 if level == "debug" then
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29 return log_debug(message, ...);
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30 elseif level == "info" then
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31 return log_info(message, ...);
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32 elseif level == "warn" then
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33 return log_warn(message, ...);
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34 elseif level == "error" then
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35 return log_error(message, ...);
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36 end
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37 end
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38 end
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39
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40 function make_logger(source_name, level)
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41 local level_handlers = level_sinks[level];
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42 if not level_handlers then
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43 level_handlers = {};
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44 level_sinks[level] = level_handlers;
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45 end
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47 local logger = function (message, ...)
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48 for i = 1,#level_handlers do
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49 level_handlers[i](source_name, level, message, ...);
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50 end
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51 end
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52
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53 return logger;
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54 end
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55
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56 local function reset()
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57 for level, handler_list in pairs(level_sinks) do
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58 -- Clear all handlers for this level
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59 for i = 1, #handler_list do
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60 handler_list[i] = nil;
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61 end
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62 end
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63 end
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64
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65 local function add_level_sink(level, sink_function)
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66 if not level_sinks[level] then
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67 level_sinks[level] = { sink_function };
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68 else
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69 level_sinks[level][#level_sinks[level] + 1 ] = sink_function;
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70 end
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71 end
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72
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73 local function add_simple_sink(simple_sink_function, levels)
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74 local format = require "util.format".format;
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75 local function sink_function(name, level, msg, ...)
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76 return simple_sink_function(name, level, format(msg, ...));
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77 end
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78 for _, level in ipairs(levels or {"debug", "info", "warn", "error"}) do
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79 add_level_sink(level, sink_function);
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80 end
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81 end
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82
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83 return {
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84 init = init;
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85 make_logger = make_logger;
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86 reset = reset;
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87 add_level_sink = add_level_sink;
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88 add_simple_sink = add_simple_sink;
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89 new = make_logger;
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90 };