2 ':' //; exec "$(command -v nodejs || command -v node || command -v js || echo "ERROR node.js IS NOT AVAILABLE IN THIS SYSTEM")" "$0" "$@"
5 // http://unix.stackexchange.com/questions/65235/universal-node-js-shebang
7 // Initially this is run as a shell script (#!/bin/sh).
8 // Then, the second line, finds nodejs or node or js in the system path
9 // and executes it with the shell parameters.
11 // --------------------------------------------------------------------------------------------------------------------
15 // --------------------------------------------------------------------------------------------------------------------
16 // get NETDATA environment variables
18 var NETDATA_PLUGINS_DIR = process.env.NETDATA_PLUGINS_DIR || __dirname;
19 var NETDATA_CONFIG_DIR = process.env.NETDATA_CONFIG_DIR || '/etc/netdata';
20 var NETDATA_UPDATE_EVERY = process.env.NETDATA_UPDATE_EVERY || 1;
21 var NODE_D_DIR = NETDATA_PLUGINS_DIR + '/../node.d';
23 // make sure the modules are found
24 process.mainModule.paths.unshift(NODE_D_DIR + '/node_modules');
25 process.mainModule.paths.unshift(NODE_D_DIR);
28 // --------------------------------------------------------------------------------------------------------------------
29 // load required modules
31 var fs = require('fs');
32 var url = require('url');
33 var http = require('http');
34 var path = require('path');
35 var extend = require('extend');
36 var netdata = require('netdata');
39 // --------------------------------------------------------------------------------------------------------------------
42 function pluginConfig(filename) {
43 var f = path.basename(filename);
45 // node.d.plugin configuration
46 var m = f.match('.plugin' + '$');
48 return netdata.options.paths.config + '/' + f.substring(0, m.index) + '.conf';
50 // node.d modules configuration
51 m = f.match('.node.js' + '$');
53 return netdata.options.paths.config + '/node.d/' + f.substring(0, m.index) + '.conf';
55 return netdata.options.paths.config + '/node.d/' + f + '.conf';
59 extend(true, netdata.options, {
60 filename: path.basename(__filename),
62 update_every: NETDATA_UPDATE_EVERY,
64 exit_after_ms: 3600 * 4 * 1000,
67 plugins: NETDATA_PLUGINS_DIR,
68 config: NETDATA_CONFIG_DIR,
72 modules_enable_autodetect: true,
73 modules_enable_all: true,
76 netdata.options.config_filename = pluginConfig(__filename);
78 // load configuration file
80 netdata.options_loaded = JSON.parse(fs.readFileSync(netdata.options.config_filename, 'utf8'));
81 extend(true, netdata.options, netdata.options_loaded);
82 console.error('merged netdata object:');
83 console.error(netdata);
86 netdata.error('Cannot read configuration file ' + netdata.options.config_filename + ': ' + e.message + ', using internal defaults.');
87 netdata.options_loaded = undefined;
92 // apply module paths to node.js process
93 function applyModulePaths() {
94 var len = netdata.options.paths.modules.length;
96 process.mainModule.paths.unshift(netdata.options.paths.modules[len]);
101 // --------------------------------------------------------------------------------------------------------------------
104 function dumpError(err) {
105 if (typeof err === 'object') {
107 netdata.debug(err.stack);
112 // --------------------------------------------------------------------------------------------------------------------
113 // get command line arguments
115 var found_myself = false;
116 var found_number = false;
117 var found_modules = false;
118 process.argv.forEach(function (val, index, array) {
119 netdata.debug('PARAM: ' + val);
122 if(val === __filename)
128 netdata.options.DEBUG = true;
129 netdata.debug('DEBUG enabled');
133 if(found_number === true) {
134 if(found_modules === false) {
135 for(var i in netdata.options.modules)
136 netdata.options.modules[i].enabled = false;
139 if(typeof netdata.options.modules[val] === 'undefined')
140 netdata.options.modules[val] = {};
142 netdata.options.modules[val].enabled = true;
143 netdata.options.modules_enable_all = false;
144 netdata.debug('enabled module ' + val);
148 var x = parseInt(val);
150 netdata.options.update_every = x;
151 if(netdata.options.update_every < NETDATA_UPDATE_EVERY) {
152 netdata.options.update_every = NETDATA_UPDATE_EVERY;
153 netdata.debug('Update frequency ' + x + 's is too low');
157 netdata.debug('Update frequency set to ' + netdata.options.update_every + ' seconds');
159 else netdata.error('Ignoring parameter: ' + val);
162 netdata.error('Cannot get value of parameter: ' + val);
172 if(netdata.options.update_every < 1) {
173 netdata.debug('Adjusting update frequency to 1 second');
174 netdata.options.update_every = 1;
177 // --------------------------------------------------------------------------------------------------------------------
180 function findModules() {
183 var files = fs.readdirSync(NODE_D_DIR);
184 var len = files.length;
186 var m = files[len].match('.node.js' + '$');
188 var n = files[len].substring(0, m.index);
190 if(typeof(netdata.options.modules[n]) === 'undefined')
191 netdata.options.modules[n] = { name: n, enabled: netdata.options.modules_enable_all };
193 if(netdata.options.modules[n].enabled === true) {
194 netdata.options.modules[n].name = n;
195 netdata.options.modules[n].filename = NODE_D_DIR + '/' + files[len];
196 netdata.options.modules[n].loaded = false;
198 if(typeof(netdata.options.modules[n].config_filename) !== 'string')
199 netdata.options.modules[n].config_filename = pluginConfig(files[len]);
203 netdata.debug('loading module ' + netdata.options.modules[n].filename);
204 netdata.options.modules[n].module = require(netdata.options.modules[n].filename);
205 netdata.options.modules[n].module.name = n;
206 netdata.debug('loaded module ' + netdata.options.modules[n].name + ' from ' + netdata.options.modules[n].filename);
209 netdata.options.modules[n].enabled = false;
210 netdata.error('Cannot load module: ' + netdata.options.modules[n].filename + ' exception: ' + e);
215 // load its configuration
217 enable_autodetect: netdata.options.modules_enable_autodetect,
218 update_every: netdata.options.update_every
221 netdata.debug('loading module\'s ' + netdata.options.modules[n].name + ' config ' + netdata.options.modules[n].config_filename);
222 var c2 = JSON.parse(fs.readFileSync(netdata.options.modules[n].config_filename, 'utf8'));
224 netdata.debug('loaded module\'s ' + netdata.options.modules[n].name + ' config ' + netdata.options.modules[n].config_filename);
227 netdata.error('Cannot load module\'s ' + netdata.options.modules[n].name + ' config from ' + netdata.options.modules[n].config_filename + ' exception: ' + e + ', using internal defaults.');
231 // call module auto-detection / configuration
233 netdata.modules_configuring++;
234 netdata.debug('Configuring module ' + netdata.options.modules[n].name);
235 var serv = netdata.configure(netdata.options.modules[n].module, c, function() {
236 netdata.debug('Configured module ' + netdata.options.modules[n].name);
237 netdata.modules_configuring--;
240 netdata.debug('Configuring module ' + netdata.options.modules[n].name + ' reports ' + serv + ' eligible services.');
243 netdata.modules_configuring--;
244 netdata.options.modules[n].enabled = false;
245 netdata.error('Failed module auto-detection: ' + netdata.options.modules[n].name + ' exception: ' + e + ', disabling module.');
250 netdata.options.modules[n].loaded = true;
256 // netdata.debug(netdata.options.modules);
260 if(findModules() === 0) {
261 netdata.error('Cannot load any .node.js module from: ' + NODE_D_DIR);
262 netdata.disableNodePlugin();
267 // --------------------------------------------------------------------------------------------------------------------
270 function start_when_configuring_ends() {
271 if(netdata.modules_configuring > 0) {
272 netdata.debug('Waiting modules configuration, still running ' + netdata.modules_configuring);
273 setTimeout(start_when_configuring_ends, 500);
277 netdata.modules_configuring = 0;
280 start_when_configuring_ends();
282 //netdata.debug('netdata object:')
283 //netdata.debug(netdata);