prosody
495de404a8ae
util/logger.lua

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util/logger.lua @ 7567:495de404a8ae

ejabberdsql2prosody: rename variable 'host' to prevent shadowing upvalue [luacheck] Functions roster(), roster_pending(), roster_group(), private_storage() and offline_msg() have argument named "host", which used to shadow upvalue of this variable before this change. Instead of renaming this argument, let's rename the variable to match what the script says in usage: Usage: ejabberdsql2prosody.lua filename.txt hostname
author Anton Shestakov <av6@dwimlabs.net>
date Fri, 12 Aug 2016 13:44:47 +0800
parent 7131:ea3eea291321
child 8553:32438665dc5e
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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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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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12 local _ENV = nil;
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14 local level_sinks = {};
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16 local make_logger;
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18 local function init(name)
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19 local log_debug = make_logger(name, "debug");
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20 local log_info = make_logger(name, "info");
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21 local log_warn = make_logger(name, "warn");
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22 local log_error = make_logger(name, "error");
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23
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24 return function (level, message, ...)
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25 if level == "debug" then
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26 return log_debug(message, ...);
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27 elseif level == "info" then
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28 return log_info(message, ...);
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29 elseif level == "warn" then
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30 return log_warn(message, ...);
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31 elseif level == "error" then
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32 return log_error(message, ...);
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33 end
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34 end
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35 end
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37 function make_logger(source_name, level)
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38 local level_handlers = level_sinks[level];
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39 if not level_handlers then
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40 level_handlers = {};
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41 level_sinks[level] = level_handlers;
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42 end
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43
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44 local logger = function (message, ...)
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45 for i = 1,#level_handlers do
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46 level_handlers[i](source_name, level, message, ...);
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47 end
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48 end
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50 return logger;
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51 end
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52
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53 local function reset()
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54 for level, handler_list in pairs(level_sinks) do
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55 -- Clear all handlers for this level
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56 for i = 1, #handler_list do
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57 handler_list[i] = nil;
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58 end
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59 end
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60 end
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61
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62 local function add_level_sink(level, sink_function)
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63 if not level_sinks[level] then
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64 level_sinks[level] = { sink_function };
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65 else
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66 level_sinks[level][#level_sinks[level] + 1 ] = sink_function;
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67 end
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68 end
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69
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70 return {
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71 init = init;
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72 make_logger = make_logger;
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73 reset = reset;
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74 add_level_sink = add_level_sink;
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75 new = make_logger;
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76 };