prosody-modules
3e30799deec2
mod_munin/mod_munin.lua

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mod_munin/mod_munin.lua @ 5275:3e30799deec2

mod_pubsub_feeds: Fix packaging of support library for installer
author Kim Alvefur <zash@zash.se>
date Sat, 25 Mar 2023 20:18:05 +0100
parent 4553:7e5c8186f121
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 module:set_global();
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2
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3 local s_format = string.format;
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4 local t_insert = table.insert;
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5 local t_concat = table.concat;
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6 local array = require"util.array";
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7 local it = require"util.iterators";
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8 local mt = require"util.multitable";
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9
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10 local meta = mt.new(); meta.data = module:shared"meta";
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11 local data = mt.new(); data.data = module:shared"data";
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12
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13 local munin_listener = {};
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14 local munin_commands = {};
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15
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16 local node_name = module:get_option_string("munin_node_name", "localhost");
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17 local ignore_stats = module:get_option_set("munin_ignored_stats", { });
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18
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19 local function clean_fieldname(name)
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20 return (name:gsub("[^A-Za-z0-9_]", "_"):gsub("^[^A-Za-z_]", "_%1"));
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21 end
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22
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23 function munin_listener.onconnect(conn)
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24 -- require"core.statsmanager".collect();
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25 conn:write("# munin node at "..node_name.."\n");
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26 end
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27
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28 function munin_listener.onincoming(conn, line)
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29 line = line and line:match("^[^\r\n]+");
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30 if type(line) ~= "string" then return end
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31 -- module:log("debug", "incoming: %q", line);
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32 local command = line:match"^%w+";
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33 command = munin_commands[command];
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34 if not command then
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35 conn:write("# Unknown command.\n");
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36 return;
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37 end
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38 local ok, err = pcall(command, conn, line);
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39 if not ok then
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40 module:log("error", "Error running %q: %s", line, err);
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41 conn:close();
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42 end
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43 end
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44
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45 function munin_listener.ondisconnect() end
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46
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47 function munin_commands.cap(conn)
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48 conn:write("cap\n");
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49 end
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50
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51 function munin_commands.list(conn)
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52 conn:write(array(it.keys(data.data)):concat(" ") .. "\n");
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53 end
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54
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55 function munin_commands.config(conn, line)
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56 -- TODO what exactly?
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57 local stat = line:match("%s(%S+)");
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58 if not stat then conn:write("# Unknown service\n.\n"); return end
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59 for _, _, k, value in meta:iter(stat, "", nil) do
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60 conn:write(s_format("%s %s\n", k, value));
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61 end
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62 for _, name, k, value in meta:iter(stat, nil, nil) do
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63 if name ~= "" and not ignore_stats:contains(name) then
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64 conn:write(s_format("%s.%s %s\n", name, k, value));
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65 end
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66 end
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67 conn:write(".\n");
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68 end
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69
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70 function munin_commands.fetch(conn, line)
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71 local stat = line:match("%s(%S+)");
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72 if not stat then conn:write("# Unknown service\n.\n"); return end
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73 for _, name, value in data:iter(stat, nil) do
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74 if not ignore_stats:contains(name) then
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75 conn:write(s_format("%s.value %.12f\n", name, value));
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76 end
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77 end
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78 conn:write(".\n");
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79 end
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80
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81 function munin_commands.quit(conn)
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82 conn:close();
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83 end
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84
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85 module:hook("stats-updated", function (event)
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86 local all_stats, this = event.stats_extra;
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87 local host, sect, name, typ, key;
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88 for stat, value in pairs(event.changed_stats) do
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89 if not ignore_stats:contains(stat) then
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90 this = all_stats[stat];
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91 -- module:log("debug", "changed_stats[%q] = %s", stat, tostring(value));
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92 host, sect, name, typ = stat:match("^/([^/]+)/([^/]+)/(.+):(%a+)$");
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93 if host == nil then
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94 sect, name, typ = stat:match("^([^.]+)%.(.+):(%a+)$");
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95 elseif host == "*" then
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96 host = nil;
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97 end
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98 if sect:find("^mod_measure_.") then
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99 sect = sect:sub(13);
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100 elseif sect:find("^mod_statistics_.") then
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101 sect = sect:sub(16);
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102 end
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103 key = clean_fieldname(s_format("%s_%s_%s", host or "global", sect, typ));
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104
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105 if not meta:get(key) then
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106 if host then
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107 meta:set(key, "", "graph_title", s_format("%s %s on %s", sect, typ, host));
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108 else
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109 meta:set(key, "", "graph_title", s_format("Global %s %s", sect, typ));
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110 end
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111 meta:set(key, "", "graph_vlabel", this and this.units or typ);
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112 meta:set(key, "", "graph_category", sect);
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113
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114 meta:set(key, name, "label", name);
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115 elseif not meta:get(key, name, "label") then
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116 meta:set(key, name, "label", name);
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117 end
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118
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119 data:set(key, name, value);
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120 end
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121 end
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122 end);
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123
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124 local function openmetrics_handler(event)
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125 local registry = event.metric_registry
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126 local host, sect, name, typ, key;
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127 for family_name, metric_family in pairs(registry:get_metric_families()) do
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128 if not ignore_stats:contains(family_name) then
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129 -- module:log("debug", "changed_stats[%q] = %s", stat, tostring(value));
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130 local host_key
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131 if metric_family.label_keys[1] == "host" then
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132 host_key = 1
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133 end
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134 if family_name:sub(1, 12) == "prosody_mod_" then
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135 sect, name = family_name:match("^prosody_mod_([^/]+)/(.+)$")
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136 else
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137 sect, name = family_name:match("^([^_]+)_(.+)$")
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138 end
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139 name = clean_fieldname(name)
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140
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141 local metric_type = metric_family.type_
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142 if metric_type == "gauge" or metric_type == "unknown" then
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143 typ = "GAUGE"
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144 else
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145 typ = "DCOUNTER"
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146 end
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147
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148 for labelset, metric in metric_family:iter_metrics() do
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149 host = host_key and labelset[host_key] or "global"
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150 local name_parts = {}
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151 for i, label in ipairs(labelset) do
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152 if i ~= host_key then
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153 t_insert(name_parts, label)
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154 end
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155 end
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156 local full_name = t_concat(name_parts, "_")
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157 local display_name = #name_parts > 0 and full_name or name
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158 key = clean_fieldname(s_format("%s_%s_%s", host or "global", sect, name));
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159
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160 local unit
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161 local factor = 1
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162 unit = metric_family.unit
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163 if unit == "seconds" and typ == "DCOUNTER" then
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164 factor = 100
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165 unit = "%time"
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166 elseif typ == "DCOUNTER" then
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167 unit = unit .. "/s"
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168 end
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169
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170 if not meta:get(key, "") then
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171 meta:set(key, "", "graph_title", s_format(metric_family.description));
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172 if unit ~= "" then
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173 meta:set(key, "", "graph_vlabel", unit);
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174 end
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175 meta:set(key, "", "graph_category", sect);
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176 end
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diff changeset
177 if not meta:get(key, display_name) then
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178 meta:set(key, display_name, "label", display_name);
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diff changeset
179 meta:set(key, display_name, "type", typ)
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180 end
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181
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diff changeset
182 for suffix, extra_labels, value in metric:iter_samples() do
7e5c8186f121 mod_munin: Port to new OpenMetrics based statistics module
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parents: 3130
diff changeset
183 if metric_type == "histogram" or metric_type == "summary" then
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parents: 3130
diff changeset
184 if suffix == "_sum" then
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parents: 3130
diff changeset
185 data:set(key, display_name, value * factor)
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parents: 3130
diff changeset
186 end
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187 elseif suffix == "_total" or suffix == "" then
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parents: 3130
diff changeset
188 data:set(key, display_name, value * factor)
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parents: 3130
diff changeset
189 end
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Jonas Schäfer <jonas@wielicki.name>
parents: 3130
diff changeset
190 end
7e5c8186f121 mod_munin: Port to new OpenMetrics based statistics module
Jonas Schäfer <jonas@wielicki.name>
parents: 3130
diff changeset
191 end
7e5c8186f121 mod_munin: Port to new OpenMetrics based statistics module
Jonas Schäfer <jonas@wielicki.name>
parents: 3130
diff changeset
192 end
7e5c8186f121 mod_munin: Port to new OpenMetrics based statistics module
Jonas Schäfer <jonas@wielicki.name>
parents: 3130
diff changeset
193 end
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Jonas Schäfer <jonas@wielicki.name>
parents: 3130
diff changeset
194 end
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Jonas Schäfer <jonas@wielicki.name>
parents: 3130
diff changeset
195
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196 module:hook("openmetrics-updated", openmetrics_handler);
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parents: 3130
diff changeset
197
1624
0f20390f6fa5 mod_munin: Implementation of the Munin collection protocol
Kim Alvefur <zash@zash.se>
parents:
diff changeset
198 module:provides("net", {
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parents:
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199 listener = munin_listener;
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parents:
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200 default_mode = "*l";
0f20390f6fa5 mod_munin: Implementation of the Munin collection protocol
Kim Alvefur <zash@zash.se>
parents:
diff changeset
201 default_port = 4949;
0f20390f6fa5 mod_munin: Implementation of the Munin collection protocol
Kim Alvefur <zash@zash.se>
parents:
diff changeset
202 });
0f20390f6fa5 mod_munin: Implementation of the Munin collection protocol
Kim Alvefur <zash@zash.se>
parents:
diff changeset
203