prosody
ce8291e89d67
core/statsmanager.lua

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core/statsmanager.lua @ 11405:ce8291e89d67

mod_http_file_share: Remove correct entries when not all expired files were deleted If any of the expired files could not be deleted then we should not forget about that, we should complain loudly and try again. The code got this backwards and would have removed only the entries referring to still existing files. Test procedure: 1. Upload a file 2. chown root:root http_file_share/ 3. In uploads.list, decrease 'when' enough to ensure expiry 4. Reload mod_http_file_share 5. Should see an error in the logs about failure to delete the file 6. Should see that the metadata in uploads.list is still there 7. chown http_file_share/ back to the previous owner 8. Reload mod_http_file_share 9. Should see logs about successful removal of expired file 10. Should see that the metadata in uploads.list is gone 11. Should see that the file was deleted
author Kim Alvefur <zash@zash.se>
date Thu, 25 Feb 2021 23:58:08 +0100
parent 10884:6992c4be1a19
child 11506:9a3ebdd65f9c
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1
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2 local config = require "core.configmanager";
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3 local log = require "util.logger".init("stats");
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4 local timer = require "util.timer";
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5 local fire_event = prosody.events.fire_event;
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6
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7 local stats_interval_config = config.get("*", "statistics_interval");
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8 local stats_interval = tonumber(stats_interval_config);
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9 if stats_interval_config and not stats_interval then
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10 log("error", "Invalid 'statistics_interval' setting, statistics will be disabled");
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11 end
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12
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13 local stats_provider_name;
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14 local stats_provider_config = config.get("*", "statistics");
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15 local stats_provider = stats_provider_config;
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17 if not stats_provider and stats_interval then
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18 stats_provider = "internal";
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19 elseif stats_provider and not stats_interval then
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20 stats_interval = 60;
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21 end
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23 local builtin_providers = {
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24 internal = "util.statistics";
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25 statsd = "util.statsd";
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26 };
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27
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29 local stats, stats_err = false, nil;
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31 if stats_provider then
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32 if stats_provider:sub(1,1) == ":" then
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33 stats_provider = stats_provider:sub(2);
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34 stats_provider_name = "external "..stats_provider;
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35 elseif stats_provider then
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36 stats_provider_name = "built-in "..stats_provider;
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37 stats_provider = builtin_providers[stats_provider];
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38 if not stats_provider then
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39 log("error", "Unrecognized statistics provider '%s', statistics will be disabled", stats_provider_config);
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40 end
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41 end
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43 local have_stats_provider, stats_lib = pcall(require, stats_provider);
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44 if not have_stats_provider then
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45 stats, stats_err = nil, stats_lib;
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46 else
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47 local stats_config = config.get("*", "statistics_config");
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48 stats, stats_err = stats_lib.new(stats_config);
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49 stats_provider_name = stats_lib._NAME or stats_provider_name;
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50 end
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51 end
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52
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53 if stats == nil then
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54 log("error", "Error loading statistics provider '%s': %s", stats_provider, stats_err);
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55 end
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56
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57 local measure, collect;
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58 local latest_stats = {};
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59 local changed_stats = {};
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60 local stats_extra = {};
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61
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62 if stats then
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63 function measure(type, name, conf)
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64 local f = assert(stats[type], "unknown stat type: "..type);
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65 return f(name, conf);
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66 end
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67
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68 if stats_interval then
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69 log("debug", "Statistics enabled using %s provider, collecting every %d seconds", stats_provider_name, stats_interval);
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71 local mark_collection_start = measure("times", "stats.collection");
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72 local mark_processing_start = measure("times", "stats.processing");
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73
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74 function collect()
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75 local mark_collection_done = mark_collection_start();
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76 fire_event("stats-update");
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77 mark_collection_done();
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78
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79 if stats.get_stats then
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80 changed_stats, stats_extra = {}, {};
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81 for stat_name, getter in pairs(stats.get_stats()) do
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82 -- luacheck: ignore 211/type
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83 local type, value, extra = getter();
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84 local old_value = latest_stats[stat_name];
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85 latest_stats[stat_name] = value;
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86 if value ~= old_value then
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87 changed_stats[stat_name] = value;
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88 end
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89 if extra then
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90 stats_extra[stat_name] = extra;
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91 end
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92 end
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93 local mark_processing_done = mark_processing_start();
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94 fire_event("stats-updated", { stats = latest_stats, changed_stats = changed_stats, stats_extra = stats_extra });
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95 mark_processing_done();
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96 end
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97 return stats_interval;
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98 end
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99 timer.add_task(stats_interval, collect);
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100 prosody.events.add_handler("server-started", function () collect() end, -1);
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101 prosody.events.add_handler("server-stopped", function () collect() end, -1);
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102 else
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103 log("debug", "Statistics enabled using %s provider, collection is disabled", stats_provider_name);
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104 end
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105 else
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106 log("debug", "Statistics disabled");
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107 function measure() return measure; end
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108 end
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109
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110
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111 return {
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112 measure = measure;
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113 get_stats = function ()
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114 return latest_stats, changed_stats, stats_extra;
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115 end;
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116 get = function (name)
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117 return latest_stats[name], stats_extra[name];
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118 end;
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119 };