prosody-modules
9d88c3d9eea5
mod_log_ringbuffer/mod_log_ringbuffer.lua

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mod_log_ringbuffer/mod_log_ringbuffer.lua @ 6281:9d88c3d9eea5

mod_http_oauth2: Enforce the registered grant types Thus a client can limit itself to certain grant types. Not sure if this prevents any attacks, but what was the point of including this in the registration if it was not going to be enforced? This became easier to do with client_id being available earlier.
author Kim Alvefur <zash@zash.se>
date Mon, 02 Jun 2025 20:55:20 +0200
parent 5877:97c9b76867ca
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1 module:set_global();
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2
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3 local loggingmanager = require "core.loggingmanager";
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4 local format = require "util.format".format;
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5 local pposix = require "util.pposix";
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6 local rb = require "util.ringbuffer";
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7 local queue = require "util.queue";
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8
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9 local default_timestamp = "%b %d %H:%M:%S ";
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10 local max_chunk_size = module:get_option_number("log_ringbuffer_chunk_size", 16384);
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11
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12 local os_date = os.date;
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13
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14 local default_filename_template = "{paths.data}/ringbuffer-logs-{pid}-{count}.log";
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15 local render_filename = require "util.interpolation".new("%b{}", function (s) return s; end, {
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16 yyyymmdd = function (t)
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17 return os_date("%Y%m%d", t);
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18 end;
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19 hhmmss = function (t)
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20 return os_date("%H%M%S", t);
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21 end;
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22 });
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23
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24 local dump_count = 0;
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25
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26 local function dump_buffer(dump, filename)
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27 dump_count = dump_count + 1;
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28 local f, err = io.open(filename, "a+");
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29 if not f then
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30 module:log("error", "Unable to open output file: %s", err);
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31 return;
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32 end
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33 f:write(("-- Dumping log buffer at %s --\n"):format(os_date(default_timestamp)));
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34 dump(f);
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35 f:write("-- End of dump --\n\n");
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36 f:close();
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37 end
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38
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39 local function get_filename(filename_template)
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40 filename_template = filename_template or default_filename_template;
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41 return render_filename(filename_template, {
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42 paths = prosody.paths;
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43 pid = pposix.getpid();
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44 count = dump_count;
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45 time = os.time();
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46 });
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47 end
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48
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49 local function new_buffer(config)
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50 local write, dump;
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51
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52 if config.lines then
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53 local buffer = queue.new(config.lines, true);
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54 function write(line)
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55 buffer:push(line);
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56 end
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57 function dump(f)
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58 -- COMPAT w/0.11 - update to use :consume()
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59 for line in buffer.pop, buffer do
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60 f:write(line);
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61 end
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62 end
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63 else
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64 local buffer_size = config.size or 100*1024;
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65 local buffer = rb.new(buffer_size);
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66 function write(line)
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67 if not buffer:write(line) then
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68 if #line > buffer_size then
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69 buffer:discard(buffer_size);
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70 buffer:write(line:sub(-buffer_size));
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71 else
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72 buffer:discard(#line);
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73 buffer:write(line);
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74 end
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75 end
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76 end
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77 function dump(f)
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78 local bytes_remaining = buffer:length();
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79 while bytes_remaining > 0 do
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80 local chunk_size = math.min(bytes_remaining, max_chunk_size);
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81 local chunk = buffer:read(chunk_size);
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82 if not chunk then
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83 return;
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84 end
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85 f:write(chunk);
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86 bytes_remaining = bytes_remaining - chunk_size;
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87 end
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88 end
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89 end
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90 return write, dump;
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91 end
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92
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93 local event_hooks = {};
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94
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95 local function ringbuffer_log_sink_maker(sink_config)
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96 local write, dump = new_buffer(sink_config);
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97
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98 local timestamps = sink_config.timestamps;
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99
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100 if timestamps == true or timestamps == nil then
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101 timestamps = default_timestamp; -- Default format
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102 elseif timestamps then
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103 timestamps = timestamps .. " ";
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104 end
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105
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106 local function handler()
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107 dump_buffer(dump, sink_config.filename or get_filename(sink_config.filename_template));
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108 end
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109
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110 if sink_config.signal then
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111 module:hook_global("signal/"..sink_config.signal, handler);
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112 event_hooks[handler] = "signal/"..sink_config.signal;
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113 elseif sink_config.event then
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114 module:hook_global(sink_config.event, handler);
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115 event_hooks[handler] = sink_config.event;
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116 end
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117
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118 return function (name, level, message, ...)
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119 local line = format("%s%s\t%s\t%s\n", timestamps and os_date(timestamps) or "", name, level, format(message, ...));
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120 write(line);
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121 end;
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122 end
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123
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124 module:hook_global("reopen-log-files", function()
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125 for handler, event_name in pairs(event_hooks) do
97c9b76867ca mod_log_ringbuffer: Detach event handlers on logging reload (thanks Menel)
Kim Alvefur <zash@zash.se>
parents: 5876
diff changeset
126 module:unhook_object_event(prosody.events, event_name, handler);
97c9b76867ca mod_log_ringbuffer: Detach event handlers on logging reload (thanks Menel)
Kim Alvefur <zash@zash.se>
parents: 5876
diff changeset
127 event_hooks[handler] = nil;
97c9b76867ca mod_log_ringbuffer: Detach event handlers on logging reload (thanks Menel)
Kim Alvefur <zash@zash.se>
parents: 5876
diff changeset
128 end
97c9b76867ca mod_log_ringbuffer: Detach event handlers on logging reload (thanks Menel)
Kim Alvefur <zash@zash.se>
parents: 5876
diff changeset
129 end, 1);
97c9b76867ca mod_log_ringbuffer: Detach event handlers on logging reload (thanks Menel)
Kim Alvefur <zash@zash.se>
parents: 5876
diff changeset
130
4205
481c4d75e77d mod_log_ringbuffer: New module to send logs to an in-memory ringbuffer
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
131 loggingmanager.register_sink_type("ringbuffer", ringbuffer_log_sink_maker);