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 util = require('util');
34 var http = require('http');
35 var path = require('path');
36 var extend = require('extend');
37 var netdata = require('netdata');
40 // --------------------------------------------------------------------------------------------------------------------
43 function pluginConfig(filename) {
44 var f = path.basename(filename);
46 // node.d.plugin configuration
47 var m = f.match('.plugin' + '$');
49 return netdata.options.paths.config + '/' + f.substring(0, m.index) + '.conf';
51 // node.d modules configuration
52 m = f.match('.node.js' + '$');
54 return netdata.options.paths.config + '/node.d/' + f.substring(0, m.index) + '.conf';
56 return netdata.options.paths.config + '/node.d/' + f + '.conf';
60 extend(true, netdata.options, {
61 filename: path.basename(__filename),
63 update_every: NETDATA_UPDATE_EVERY,
66 plugins: NETDATA_PLUGINS_DIR,
67 config: NETDATA_CONFIG_DIR,
71 modules_enable_autodetect: true,
72 modules_enable_all: true,
75 netdata.options.config_filename = pluginConfig(__filename);
77 // load configuration file
79 netdata.options_loaded = JSON.parse(fs.readFileSync(netdata.options.config_filename, 'utf8'));
80 extend(true, netdata.options, netdata.options_loaded);
82 if(!netdata.options.paths.plugins)
83 netdata.options.paths.plugins = NETDATA_PLUGINS_DIR;
85 if(!netdata.options.paths.config)
86 netdata.options.paths.config = NETDATA_CONFIG_DIR;
88 // console.error('merged netdata object:');
89 // console.error(util.inspect(netdata, {depth: 10}));
92 netdata.error('Cannot read configuration file ' + netdata.options.config_filename + ': ' + e.message + ', using internal defaults.');
93 netdata.options_loaded = undefined;
98 // apply module paths to node.js process
99 function applyModulePaths() {
100 var len = netdata.options.paths.modules.length;
102 process.mainModule.paths.unshift(netdata.options.paths.modules[len]);
107 // --------------------------------------------------------------------------------------------------------------------
110 function dumpError(err) {
111 if (typeof err === 'object') {
113 netdata.debug(err.stack);
118 // --------------------------------------------------------------------------------------------------------------------
119 // get command line arguments
121 var found_myself = false;
122 var found_number = false;
123 var found_modules = false;
124 process.argv.forEach(function (val, index, array) {
125 netdata.debug('PARAM: ' + val);
128 if(val === __filename)
134 netdata.options.DEBUG = true;
135 netdata.debug('DEBUG enabled');
139 if(found_number === true) {
140 if(found_modules === false) {
141 for(var i in netdata.options.modules)
142 netdata.options.modules[i].enabled = false;
145 if(typeof netdata.options.modules[val] === 'undefined')
146 netdata.options.modules[val] = {};
148 netdata.options.modules[val].enabled = true;
149 netdata.options.modules_enable_all = false;
150 netdata.debug('enabled module ' + val);
154 var x = parseInt(val);
156 netdata.options.update_every = x;
157 if(netdata.options.update_every < NETDATA_UPDATE_EVERY) {
158 netdata.options.update_every = NETDATA_UPDATE_EVERY;
159 netdata.debug('Update frequency ' + x + 's is too low');
163 netdata.debug('Update frequency set to ' + netdata.options.update_every + ' seconds');
165 else netdata.error('Ignoring parameter: ' + val);
168 netdata.error('Cannot get value of parameter: ' + val);
178 if(netdata.options.update_every < 1) {
179 netdata.debug('Adjusting update frequency to 1 second');
180 netdata.options.update_every = 1;
183 // --------------------------------------------------------------------------------------------------------------------
186 function findModules() {
189 var files = fs.readdirSync(NODE_D_DIR);
190 var len = files.length;
192 var m = files[len].match('.node.js' + '$');
194 var n = files[len].substring(0, m.index);
196 if(typeof(netdata.options.modules[n]) === 'undefined')
197 netdata.options.modules[n] = { name: n, enabled: netdata.options.modules_enable_all };
199 if(netdata.options.modules[n].enabled === true) {
200 netdata.options.modules[n].name = n;
201 netdata.options.modules[n].filename = NODE_D_DIR + '/' + files[len];
202 netdata.options.modules[n].loaded = false;
204 if(typeof(netdata.options.modules[n].config_filename) !== 'string')
205 netdata.options.modules[n].config_filename = pluginConfig(files[len]);
209 netdata.debug('loading module ' + netdata.options.modules[n].filename);
210 netdata.options.modules[n].module = require(netdata.options.modules[n].filename);
211 netdata.options.modules[n].module.name = n;
212 netdata.debug('loaded module ' + netdata.options.modules[n].name + ' from ' + netdata.options.modules[n].filename);
215 netdata.options.modules[n].enabled = false;
216 netdata.error('Cannot load module: ' + netdata.options.modules[n].filename + ' exception: ' + e);
221 // load its configuration
223 enable_autodetect: netdata.options.modules_enable_autodetect,
224 update_every: netdata.options.update_every
227 netdata.debug('loading module\'s ' + netdata.options.modules[n].name + ' config ' + netdata.options.modules[n].config_filename);
228 var c2 = JSON.parse(fs.readFileSync(netdata.options.modules[n].config_filename, 'utf8'));
230 netdata.debug('loaded module\'s ' + netdata.options.modules[n].name + ' config ' + netdata.options.modules[n].config_filename);
233 netdata.error('Cannot load module\'s ' + netdata.options.modules[n].name + ' config from ' + netdata.options.modules[n].config_filename + ' exception: ' + e + ', using internal defaults.');
237 // call module auto-detection / configuration
239 netdata.modules_configuring++;
240 netdata.debug('Configuring module ' + netdata.options.modules[n].name);
241 var serv = netdata.configure(netdata.options.modules[n].module, c, function() {
242 netdata.debug('Configured module ' + netdata.options.modules[n].name);
243 netdata.modules_configuring--;
246 netdata.debug('Configuring module ' + netdata.options.modules[n].name + ' reports ' + serv + ' eligible services.');
249 netdata.modules_configuring--;
250 netdata.options.modules[n].enabled = false;
251 netdata.error('Failed module auto-detection: ' + netdata.options.modules[n].name + ' exception: ' + e + ', disabling module.');
256 netdata.options.modules[n].loaded = true;
262 // netdata.debug(netdata.options.modules);
266 if(findModules() === 0) {
267 netdata.error('Cannot load any .node.js module from: ' + NODE_D_DIR);
268 netdata.disableNodePlugin();
273 // --------------------------------------------------------------------------------------------------------------------
276 function start_when_configuring_ends() {
277 if(netdata.modules_configuring > 0) {
278 netdata.debug('Waiting modules configuration, still running ' + netdata.modules_configuring);
279 setTimeout(start_when_configuring_ends, 500);
283 netdata.modules_configuring = 0;
286 start_when_configuring_ends();
288 //netdata.debug('netdata object:')
289 //netdata.debug(netdata);