+#!/usr/bin/env node
+
+'use strict';
+
+// --------------------------------------------------------------------------------------------------------------------
+// get NETDATA environment variables
+
+var NETDATA_PLUGINS_DIR = process.env.NETDATA_PLUGINS_DIR || __dirname;
+var NETDATA_CONFIG_DIR = process.env.NETDATA_CONFIG_DIR || '/etc/netdata';
+var NETDATA_UPDATE_EVERY = process.env.NETDATA_UPDATE_EVERY || 1;
+var NODE_D_DIR = NETDATA_PLUGINS_DIR + '/../node.d';
+NETDATA_UPDATE_EVERY = NETDATA_UPDATE_EVERY * 1000;
+
+// make sure the modules are found
+process.mainModule.paths.unshift(NODE_D_DIR + '/node_modules');
+process.mainModule.paths.unshift(NODE_D_DIR);
+
+
+// --------------------------------------------------------------------------------------------------------------------
+// load required modules
+
+var fs = require('fs');
+var url = require('url');
+var http = require('http');
+var path = require('path');
+var extend = require('extend');
+var netdata = require('netdata');
+
+
+// --------------------------------------------------------------------------------------------------------------------
+// configuration
+
+function pluginConfig(filename) {
+ var f = path.basename(filename);
+
+ var m = f.match('.plugin' + '$');
+ if(m === null) m = f.match('.node.js' + '$');
+ if(m !== null)
+ return netdata.options.paths.config + '/' + f.substring(0, m.index) + '.conf';
+
+ return netdata.options.paths.config + '/' + f + '.conf';
+}
+
+// internal defaults
+extend(true, netdata.options, {
+ filename: path.basename(__filename),
+
+ update_every: NETDATA_UPDATE_EVERY,
+
+ exit_after_ms: 3600 * 4 * 1000,
+
+ paths: {
+ plugins: NETDATA_PLUGINS_DIR,
+ config: NETDATA_CONFIG_DIR,
+ modules: [],
+ },
+
+ modules_enable_autodetect: true,
+ modules_enable_all: true,
+ modules: {},
+});
+netdata.options.config_filename = pluginConfig(__filename);
+
+// load configuration file
+try {
+ netdata.options_loaded = JSON.parse(fs.readFileSync(netdata.options.config_filename, 'utf8'));
+ extend(true, netdata.options, netdata.options_loaded);
+ console.error('merged netdata object:');
+ console.error(netdata);
+}
+catch(e) {
+ netdata.error('Cannot read configuration file ' + netdata.options.config_filename + ': ' + e.message + ', using internal defaults.');
+ netdata.options_loaded = undefined;
+ dumpError(e);
+}
+
+
+// apply module paths to node.js process
+function applyModulePaths() {
+ var len = netdata.options.paths.modules.length;
+ while(len--)
+ process.mainModule.paths.unshift(netdata.options.paths.modules[len]);
+}
+applyModulePaths();
+
+
+// --------------------------------------------------------------------------------------------------------------------
+// tracing
+
+function dumpError(err) {
+ if (typeof err === 'object') {
+ if (err.stack) {
+ netdata.debug(err.stack);
+ }
+ }
+}
+
+// --------------------------------------------------------------------------------------------------------------------
+// get command line arguments
+
+var found_myself = false;
+process.argv.forEach(function (val, index, array) {
+ netdata.debug('PARAM: ' + val);
+
+ if(!found_myself) {
+ if(val === __filename)
+ found_myself = true;
+ }
+ else {
+ switch(val) {
+ case 'debug':
+ netdata.options.DEBUG = true;
+ netdata.debug('DEBUG enabled');
+ break;
+
+ default:
+ try {
+ var x = parseInt(val);
+ if(x > 0) {
+ netdata.options.update_every = x * 1000;
+ if(netdata.options.update_every < NETDATA_UPDATE_EVERY) {
+ netdata.options.update_every = NETDATA_UPDATE_EVERY;
+ netdata.debug('Update frequency ' + x + 's is too low');
+ }
+
+ netdata.debug('Update frequency set to ' + netdata.options.update_every + ' ms');
+ }
+ else netdata.error('Ignoring parameter: ' + val);
+ }
+ catch(e) {
+ netdata.error('Cannot get value of parameter: ' + val);
+ dumpError(e);
+ }
+ }
+ }
+});
+
+if(netdata.options.update_every < 1000) {
+ netdata.debug('Adjusting update frequency to 1 second');
+ netdata.options.update_every = 1000;
+}
+
+// --------------------------------------------------------------------------------------------------------------------
+// find modules
+
+function findModules() {
+ var found = 0;
+
+ var files = fs.readdirSync(NODE_D_DIR);
+ var len = files.length;
+ while(len--) {
+ var m = files[len].match('.node.js' + '$');
+ if(m !== null) {
+ var n = files[len].substring(0, m.index);
+
+ if(typeof(netdata.options.modules[n]) === 'undefined')
+ netdata.options.modules[n] = { enabled: netdata.options.modules_enable_all };
+
+ if(netdata.options.modules[n].enabled === true) {
+ netdata.options.modules[n].name = n;
+ netdata.options.modules[n].filename = NODE_D_DIR + '/' + files[len];
+ netdata.options.modules[n].loaded = false;
+
+ if(typeof(netdata.options.modules[n].config_filename) !== 'string')
+ netdata.options.modules[n].config_filename = pluginConfig(files[len]);
+
+ // load the module
+ try {
+ netdata.debug('loading module ' + netdata.options.modules[n].filename);
+ netdata.options.modules[n].module = require(netdata.options.modules[n].filename);
+ netdata.options.modules[n].module.name = n;
+ netdata.debug('loaded module ' + netdata.options.modules[n].name + ' from ' + netdata.options.modules[n].filename);
+ }
+ catch(e) {
+ netdata.options.modules[n].enabled = false;
+ netdata.error('Cannot load module: ' + netdata.options.modules[n].filename + ' exception: ' + e);
+ dumpError(e);
+ continue;
+ }
+
+ // load its configuration
+ var c = {
+ enable_autodetect: netdata.options.modules_enable_autodetect,
+ update_every: Math.round(netdata.options.update_every / 1000)
+ };
+ try {
+ netdata.debug('loading module\'s ' + netdata.options.modules[n].name + ' config ' + netdata.options.modules[n].config_filename);
+ var c2 = JSON.parse(fs.readFileSync(netdata.options.modules[n].config_filename, 'utf8'));
+ extend(true, c, c2);
+ netdata.debug('loaded module\'s ' + netdata.options.modules[n].name + ' config ' + netdata.options.modules[n].config_filename);
+ }
+ catch(e) {
+ netdata.error('Cannot load module\'s ' + netdata.options.modules[n].name + ' config from ' + netdata.options.modules[n].config_filename + ' exception: ' + e + ', using internal defaults.');
+ dumpError(e);
+ }
+
+ // call module auto-detection / configuration
+ try {
+ netdata.modules_configuring++;
+ netdata.debug('Configuring module ' + netdata.options.modules[n].name);
+ var serv = netdata.configure(netdata.options.modules[n].module, c, function() {
+ netdata.debug('Configured module ' + netdata.options.modules[n].name);
+ netdata.modules_configuring--;
+ });
+
+ netdata.debug('Configuring module ' + netdata.options.modules[n].name + ' reports ' + serv + ' eligible services.');
+ }
+ catch(e) {
+ netdata.modules_configuring--;
+ netdata.options.modules[n].enabled = false;
+ netdata.error('Failed module auto-detection: ' + netdata.options.modules[n].name + ' exception: ' + e + ', disabling module.');
+ dumpError(e);
+ continue;
+ }
+
+ netdata.options.modules[n].loaded = true;
+ found++;
+ }
+ }
+ }
+
+ return found;
+}
+
+if(findModules() === 0) {
+ netdata.error('Cannot load any .node.js module from: ' + NODE_D_DIR);
+ netdata.disableNodePlugin();
+ process.exit(1);
+}
+
+
+// --------------------------------------------------------------------------------------------------------------------
+// start
+
+function start_when_configuring_ends() {
+ if(netdata.modules_configuring > 0) {
+ netdata.debug('Waiting modules configuration, still running ' + netdata.modules_configuring);
+ setTimeout(start_when_configuring_ends, 500);
+ return;
+ }
+
+ netdata.modules_configuring = 0;
+ netdata.start();
+}
+start_when_configuring_ends();
+
+//netdata.debug('netdata object:')
+//netdata.debug(netdata);
projects / netdata.git / commitdiff