New upstream version 1.5.0+dfsgupstream/1.5.0+dfsg

1 files changed, 636 insertions, 599 deletions

diff --git a/node.d/node_modules/netdata.js b/node.d/node_modules/netdata.js
index 6183993b..11202061 100644
--- a/node.d/node_modules/netdata.js
+++ b/node.d/node_modules/netdata.js
@@ -1,5 +1,10 @@
 'use strict';
 
+// netdata
+// real-time performance and health monitoring, done right!
+// (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
+// GPL v3+
+
 var url = require('url');
 var http = require('http');
 var util = require('util');
@@ -8,609 +13,641 @@ var util = require('util');
 var netdata = require('netdata');
 
 var example_chart = {
-	id: 'id',						// the unique id of the chart
-	name: 'name',					// the name of the chart
-	title: 'title',					// the title of the chart
-	units: 'units',					// the units of the chart dimensions
-	family: 'family',				// the family of the chart
-	context: 'context',				// the context of the chart
-	type: netdata.chartTypes.line,	// the type of the chart
-	priority: 0,					// the priority relative to others in the same family
-	update_every: 1,				// the expected update frequency of the chart
-	dimensions: {
-		'dim1': {
-			id: 'dim1',				// the unique id of the dimension
-			name: 'name',			// the name of the dimension
-			algorithm: netdata.chartAlgorithms.absolute,	// the id of the netdata algorithm
-			multiplier: 1,			// the multiplier
-			divisor: 1,				// the divisor
-			hidden: false,			// is hidden (boolean)
-		},
-		'dim2': {
-			id: 'dim2',				// the unique id of the dimension
-			name: 'name',			// the name of the dimension
-			algorithm: 'absolute',	// the id of the netdata algorithm
-			multiplier: 1,			// the multiplier
-			divisor: 1,				// the divisor
-			hidden: false,			// is hidden (boolean)
-		}
-		// add as many dimensions as needed
-	}
+    id: 'id',                       // the unique id of the chart
+    name: 'name',                   // the name of the chart
+    title: 'title',                 // the title of the chart
+    units: 'units',                 // the units of the chart dimensions
+    family: 'family',               // the family of the chart
+    context: 'context',             // the context of the chart
+    type: netdata.chartTypes.line,  // the type of the chart
+    priority: 0,                    // the priority relative to others in the same family
+    update_every: 1,                // the expected update frequency of the chart
+    dimensions: {
+        'dim1': {
+            id: 'dim1',             // the unique id of the dimension
+            name: 'name',           // the name of the dimension
+            algorithm: netdata.chartAlgorithms.absolute,    // the id of the netdata algorithm
+            multiplier: 1,          // the multiplier
+            divisor: 1,             // the divisor
+            hidden: false,          // is hidden (boolean)
+        },
+        'dim2': {
+            id: 'dim2',             // the unique id of the dimension
+            name: 'name',           // the name of the dimension
+            algorithm: 'absolute',  // the id of the netdata algorithm
+            multiplier: 1,          // the multiplier
+            divisor: 1,             // the divisor
+            hidden: false,          // is hidden (boolean)
+        }
+        // add as many dimensions as needed
+    }
 };
 */
 
 var netdata = {
-	options: {
-		filename: __filename,
-		DEBUG: false,
-		update_every: 1,
-	},
-
-	chartAlgorithms: {
-		incremental: 'incremental',
-		absolute: 'absolute',
-		percentage_of_absolute_row: 'percentage-of-absolute-row',
-		percentage_of_incremental_row: 'percentage-of-incremental-row'
-	},
-
-	chartTypes: {
-		line: 'line',
-		area: 'area',
-		stacked: 'stacked'
-	},
-
-	services: new Array(),
-	modules_configuring: 0,
-	charts: {},
-
-
-	processors: {
-		http: {
-			name: 'http',
-
-			process: function(service, callback) {
-				if(netdata.options.DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': making ' + this.name + ' request: ' + netdata.stringify(service.request));
-
-				var req = http.request(service.request, function(response) {
-					if(netdata.options.DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': got server response...');
-
-					var end = false;
-					var data = '';
-					response.setEncoding('utf8');
-
-					if(response.statusCode !== 200) {
-						if(end === false) {
-							service.error('Got HTTP code ' + response.statusCode + ', failed to get data.');
-							end = true;
-							callback(null);
-						}
-					}
-
-					response.on('data', function(chunk) {
-						if(end === false) data += chunk;
-					});
-
-					response.on('error', function() {
-						if(end === false) {
-							service.error(': Read error, failed to get data.');
-							end = true;
-							callback(null);
-						}
-					});
-
-					response.on('end', function() {
-						if(end === false) {
-							if(netdata.options.DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': read completed.');
-							end = true;
-							callback(data);
-						}
-					});
-				});
-
-				req.on('error', function(e) {
-					service.error('Failed to make request: ' + netdata.stringify(service.request) + ', message: ' + e.message);
-					callback(null);
-				});
-
-				// write data to request body
-				if(typeof service.postData !== 'undefined' && service.request.method === 'POST') {
-					if(netdata.options.DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': posting data: ' + service.postData);
-					req.write(service.postData);
-				}
-
-				req.end();
-			}
-		}
-	},
-
-	stringify: function(obj) {
-		return util.inspect(obj, {depth: 10});
-	},
-
-	// show debug info, if debug is enabled
-	debug: function(msg) {
-		if(this.options.DEBUG === true) {
-			var now = new Date();
-			console.error(now.toString() + ': ' + netdata.options.filename + ': DEBUG: ' + ((typeof(msg) === 'object')?netdata.stringify(msg):msg).toString());
-		}
-	},
-
-	// log an error
-	error: function(msg) {
-		var now = new Date();
-		console.error(now.toString() + ': ' + netdata.options.filename + ': ERROR: ' + ((typeof(msg) === 'object')?netdata.stringify(msg):msg).toString());
-	},
-
-	// send data to netdata
-	send: function(msg) {
-		console.log(msg.toString());
-	},
-
-	service: function(service) {
-		if(typeof service === 'undefined')
-			service = {};
-
-		var now = new Date().getTime();
-
-		service._current_chart = null;	// the current chart we work on
-		service._queue = '';			// data to be sent to netdata
-
-		service.error_reported = false;	// error log flood control
-
-		service.added = false;			// added to netdata.services
-		service.enabled = true;
-		service.updates = 0;
-		service.running = false;
-		service.started = 0;
-		service.ended = 0;
-
-		if(typeof service.module === 'undefined') {
-			service.module = { name: 'not-defined-module' };
-			service.error('Attempted to create service without a module.');
-			service.enabled = false;
-		}
-
-		if(typeof service.name === 'undefined') {
-			service.name = 'unnamed@' + service.module.name + '/' + now;
-		}
-
-		if(typeof service.processor === 'undefined')
-			service.processor = netdata.processors.http;
-
-		if(typeof service.update_every === 'undefined')
-			service.update_every = service.module.update_every;
-
-		if(typeof service.update_every === 'undefined')
-			service.update_every = netdata.options.update_every;
-
-		if(service.update_every < netdata.options.update_every)
-			service.update_every = netdata.options.update_every;
-
-		// align the runs
-		service.next_run = now - (now % (service.update_every * 1000));
-
-		service.commit = function() {
-			if(this.added !== true) {
-				this.added = true;
-				
-				var now = new Date().getTime();
-				while( this.next_run < now )
-					this.next_run += (this.update_every * 1000);
-
-				netdata.services.push(this);
-				if(netdata.options.DEBUG === true) netdata.debug(this.module.name + ': ' + this.name + ': service committed.');
-			}
-		};
-
-		service.execute = function(callback) {
-			if(service.enabled === false) {
-				callback(null);
-				return;
-			}
-
-			this.module.active++;
-			this.running = true;
-			this.started = new Date().getTime();
-			this.updates++;
-
-			if(netdata.options.DEBUG === true)
-				netdata.debug(this.module.name + ': ' + this.name + ': making ' + this.processor.name + ' request: ' + netdata.stringify(this));
-
-			this.processor.process(this, function(response) {
-				service.ended = new Date().getTime();
-				service.duration = service.ended - service.started;
-
-				if(typeof response === 'undefined')
-					response = null;
-
-				if(response !== null)
-					service.errorClear();
-
-				if(netdata.options.DEBUG === true)
-					netdata.debug(service.module.name + ': ' + service.name + ': processing ' + service.processor.name + ' response (received in ' + (service.ended - service.started).toString() + ' ms)');
-
-				callback(service, response);
-
-				service.running = false;
-				service.module.active--;
-				if(service.module.active < 0) {
-					service.module.active = 0;
-					if(netdata.options.DEBUG === true) netdata.debug(service.module.name + ': active module counter below zero.');
-				}
-
-				if(service.module.active === 0) {
-					// check if we run under configure
-					if(service.module.configure_callback !== null) {
-						if(netdata.options.DEBUG === true) netdata.debug(service.module.name + ': configuration finish callback called from processResponse().');
-						var ccallback = service.module.configure_callback;
-						service.module.configure_callback = null;
-						ccallback();
-					}
-				}
-			});
-		};
-
-		service.update = function() {
-			if(netdata.options.DEBUG === true) netdata.debug(this.module.name + ': ' + this.name + ': starting data collection...');
-
-			this.module.update(this, function() {
-				if(netdata.options.DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': data collection ended in ' + service.duration.toString() + ' ms.');
-			});
-		};
-
-		service.error = function(message) {
-			if(this.error_reported === false) {
-				netdata.error(this.module.name + ': ' + this.name + ': ' + message);
-				this.error_reported = true;
-			}
-			else if(netdata.options.DEBUG === true)
-				netdata.debug(this.module.name + ': ' + this.name + ': ' + message);
-		};
-
-		service.errorClear = function() {
-			this.error_reported = false;
-		};
-
-		service.queue = function(txt) {
-			this._queue += txt + '\n';
-		};
-
-		service._send_chart_to_netdata = function(chart) {
-			// internal function to send a chart to netdata
-			this.queue('CHART "' + chart.id + '" "' + chart.name + '" "' + chart.title + '" "' + chart.units + '" "' + chart.family + '" "' + chart.context + '" "' + chart.type + '" ' + chart.priority.toString() + ' ' + chart.update_every.toString());
-			
-			for(var dim in chart.dimensions) {
-				var d = chart.dimensions[dim];
-
-				this.queue('DIMENSION "' + d.id + '" "' + d.name + '" "' + d.algorithm + '" ' + d.multiplier.toString() + ' ' + d.divisor.toString() + ' ' + ((d.hidden === true)?'hidden':'').toString());
-				d._created = true;
-				d._updated = false;
-			}
-
-			chart._created = true;
-			chart._updated = false;
-		};
-
-		// begin data collection for a chart
-		service.begin = function(chart) {
-			if(this._current_chart !== null && this._current_chart !== chart) {
-				this.error('Called begin() for chart ' + chart.id + ' while chart ' + this._current_chart.id + ' is still open. Closing it.');
-				this.end();
-			}
-
-			if(typeof(chart.id) === 'undefined' || netdata.charts[chart.id] != chart) {
-				this.error('Called begin() for chart ' + chart.id + ' that is not mine. Where did you find it? Ignoring it.');
-				return false;
-			}
-
-			if(netdata.options.DEBUG === true) netdata.debug('setting current chart to ' + chart.id);
-			this._current_chart = chart;
-			this._current_chart._began = true;
-
-			if(this._current_chart._dimensions_count !== 0) {
-				if(this._current_chart._created === false || this._current_chart._updated === true)
-					this._send_chart_to_netdata(this._current_chart);
-
-				var now = this.ended;
-				this.queue('BEGIN ' + this._current_chart.id + ' ' + ((this._current_chart._last_updated > 0)?((now - this._current_chart._last_updated) * 1000):'').toString());
-			}
-			// else this.error('Called begin() for chart ' + chart.id + ' which is empty.');
-
-			this._current_chart._last_updated = now;
-			this._current_chart._began = true;
-			this._current_chart._counter++;
-
-			return true;
-		};
-
-		// set a collected value for a chart
-		// we do most things on the first value we attempt to set
-		service.set = function(dimension, value) {
-			if(this._current_chart === null) {
-				this.error('Called set(' + dimension + ', ' + value + ') without an open chart.');
-				return false;
-			}
-
-			if(typeof(this._current_chart.dimensions[dimension]) === 'undefined') {
-				this.error('Called set(' + dimension + ', ' + value + ') but dimension "' + dimension + '" does not exist in chart "' + this._current_chart.id + '".');
-				return false;
-			}
-
-			if(typeof value === 'undefined' || value === null)
-				return false;
-
-			if(this._current_chart._dimensions_count !== 0) {
-				if (value instanceof Buffer)
-					this.queue('SET ' + dimension + ' = 0x' + value.toString('hex'));
-				else
-					this.queue('SET ' + dimension + ' = ' + value.toString());
-			}
-
-			return true;
-		};
-
-		// end data collection for the current chart - after calling begin()
-		service.end = function() {
-			if(this._current_chart !== null && this._current_chart._began === false) {
-				this.error('Called end() without an open chart.');
-				return false;
-			}
-
-			if(this._current_chart._dimensions_count !== 0) {
-				this.queue('END');
-				netdata.send(this._queue);
-			}
-
-			this._queue = '';
-			this._current_chart._began = false;
-			if(netdata.options.DEBUG === true) netdata.debug('sent chart ' + this._current_chart.id);
-			this._current_chart = null;
-			return true;
-		};
-
-		// discard the collected values for the current chart - after calling begin()
-		service.flush = function() {
-			if(this._current_chart === null || this._current_chart._began === false) {
-				this.error('Called flush() without an open chart.');
-				return false;
-			}
-
-			this._queue = '';
-			this._current_chart._began = false;
-			this._current_chart = null;
-			return true;
-		};
-
-		// create a netdata chart
-		service.chart = function(id, chart) {
-			if(typeof(netdata.charts[id]) === 'undefined') {
-				netdata.charts[id] = {
-					_created: false,
-					_updated: true,
-					_began: false,
-					_counter: 0,
-					_last_updated: 0,
-					_dimensions_count: 0,
-					id: id,
-					name: id,
-					title: 'untitled chart',
-					units: 'a unit',
-					family: '',
-					context: '',
-					type: netdata.chartTypes.line,
-					priority: 50000,
-					update_every: netdata.options.update_every,
-					dimensions: {}
-				};
-			}
-
-			var c = netdata.charts[id];
-
-			if(typeof(chart.name) !== 'undefined' && chart.name !== c.name) {
-				if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its name');
-				c.name = chart.name;
-				c._updated = true;
-			}
-
-			if(typeof(chart.title) !== 'undefined' && chart.title !== c.title) {
-				if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its title');
-				c.title = chart.title;
-				c._updated = true;
-			}
-
-			if(typeof(chart.units) !== 'undefined' && chart.units !== c.units) {
-				if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its units');
-				c.units = chart.units;
-				c._updated = true;
-			}
-
-			if(typeof(chart.family) !== 'undefined' && chart.family !== c.family) {
-				if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its family');
-				c.family = chart.family;
-				c._updated = true;
-			}
-
-			if(typeof(chart.context) !== 'undefined' && chart.context !== c.context) {
-				if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its context');
-				c.context = chart.context;
-				c._updated = true;
-			}
-
-			if(typeof(chart.type) !== 'undefined' && chart.type !== c.type) {
-				if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its type');
-				c.type = chart.type;
-				c._updated = true;
-			}
-
-			if(typeof(chart.priority) !== 'undefined' && chart.priority !== c.priority) {
-				if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its priority');
-				c.priority = chart.priority;
-				c._updated = true;
-			}
-
-			if(typeof(chart.update_every) !== 'undefined' && chart.update_every !== c.update_every) {
-				if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' updated its update_every from ' + c.update_every + ' to ' + chart.update_every);
-				c.update_every = chart.update_every;
-				c._updated = true;
-			}
-
-			if(typeof(chart.dimensions) !== 'undefined') {
-				for(var x in chart.dimensions) {
-					if(typeof(c.dimensions[x]) === 'undefined') {
-						c._dimensions_count++;
-
-						c.dimensions[x] = {
-							_created: false,
-							_updated: false,
-							id: x,					// the unique id of the dimension
-							name: x,				// the name of the dimension
-							algorithm: netdata.chartAlgorithms.absolute,	// the id of the netdata algorithm
-							multiplier: 1,			// the multiplier
-							divisor: 1,				// the divisor
-							hidden: false,			// is hidden (boolean)
-						};
-
-						if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ' created dimension ' + x);
-						c._updated = true;
-					}
-
-					var dim = chart.dimensions[x];
-					var d = c.dimensions[x];
-
-					if(typeof(dim.name) !== 'undefined' && d.name !== dim.name) {
-						if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its name');
-						d.name = dim.name;
-						d._updated = true;
-					}
-
-					if(typeof(dim.algorithm) !== 'undefined' && d.algorithm !== dim.algorithm) {
-						if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its algorithm from ' + d.algorithm + ' to ' + dim.algorithm);
-						d.algorithm = dim.algorithm;
-						d._updated = true;
-					}
-
-					if(typeof(dim.multiplier) !== 'undefined' && d.multiplier !== dim.multiplier) {
-						if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its multiplier');
-						d.multiplier = dim.multiplier;
-						d._updated = true;
-					}
-
-					if(typeof(dim.divisor) !== 'undefined' && d.divisor !== dim.divisor) {
-						if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its divisor');
-						d.divisor = dim.divisor;
-						d._updated = true;
-					}
-
-					if(typeof(dim.hidden) !== 'undefined' && d.hidden !== dim.hidden) {
-						if(netdata.options.DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its hidden status');
-						d.hidden = dim.hidden;
-						d._updated = true;
-					}
-
-					if(d._updated) c._updated = true;
-				}
-			}
-
-			//if(netdata.options.DEBUG === true) netdata.debug(netdata.charts);
-			return netdata.charts[id];
-		};
-
-		return service;
-	},
-
-	runAllServices: function() {
-		if(netdata.options.DEBUG === true) netdata.debug('runAllServices()');
-
-		var now = new Date().getTime();
-		var len = netdata.services.length;
-		while(len--) {
-			var service = netdata.services[len];
-
-			if(service.enabled === false || service.running === true) continue;
-			if(now <= service.next_run) continue;
-
-			service.update();
-
-			now = new Date().getTime();
-			while(service.next_run < now)
-				service.next_run += (service.update_every * 1000);
-		}
-
-		// 1/10th of update_every in pause
-		setTimeout(netdata.runAllServices, netdata.options.update_every * 100);
-	},
-
-	start: function() {
-		if(netdata.options.DEBUG === true) this.debug('started, services: ' + netdata.stringify(this.services));
-
-		if(this.services.length === 0) {
-			this.disableNodePlugin();
-			process.exit(1);
-		}
-		else this.runAllServices();
-	},
-
-	// disable the whole node.js plugin
-	disableNodePlugin: function() {
-		this.send('DISABLE');
-		process.exit(1);
-	},
-
-	requestFromParams: function(protocol, hostname, port, path, method) {
-		return {
-			protocol: protocol,
-			hostname: hostname,
-			port: port,
-			path: path,
-			//family: 4,
-			method: method,
-			headers: {
-				'Content-Type': 'application/x-www-form-urlencoded',
-				'Connection': 'keep-alive'
-			},
-			agent: new http.Agent({
-				keepAlive: true,
-				keepAliveMsecs: netdata.options.update_every * 1000,
-				maxSockets: 2, // it must be 2 to work
-				maxFreeSockets: 1
-			})
-		};
-	},
-
-	requestFromURL: function(a_url) {
-		var u = url.parse(a_url);
-		return netdata.requestFromParams(u.protocol, u.hostname, u.port, u.path, 'GET');
-	},
-
-	configure: function(module, config, callback) {
-		if(netdata.options.DEBUG === true) this.debug(module.name + ': configuring (update_every: ' + this.options.update_every + ')...');
-
-		module.active = 0;
-		module.update_every = this.options.update_every;
-
-		if(typeof config.update_every !== 'undefined')
-			module.update_every = config.update_every;
-
-		module.enable_autodetect = (config.enable_autodetect)?true:false;
-
-		if(typeof(callback) === 'function')
-			module.configure_callback = callback;
-		else
-			module.configure_callback = null;
-
-		var added = module.configure(config);
-
-		if(netdata.options.DEBUG === true) this.debug(module.name + ': configured, reporting ' + added + ' eligible services.');
-
-		if(module.configure_callback !== null && added === 0) {
-			if(netdata.options.DEBUG === true) this.debug(module.name + ': configuration finish callback called from configure().');
-			module.configure_callback = null;
-			callback();
-		}
-
-		return added;
-	}
+    options: {
+        filename: __filename,
+        DEBUG: false,
+        update_every: 1
+    },
+
+    chartAlgorithms: {
+        incremental: 'incremental',
+        absolute: 'absolute',
+        percentage_of_absolute_row: 'percentage-of-absolute-row',
+        percentage_of_incremental_row: 'percentage-of-incremental-row'
+    },
+
+    chartTypes: {
+        line: 'line',
+        area: 'area',
+        stacked: 'stacked'
+    },
+
+    services: new Array(),
+    modules_configuring: 0,
+    charts: {},
+
+
+    processors: {
+        http: {
+            name: 'http',
+
+            process: function(service, callback) {
+                var __DEBUG = netdata.options.DEBUG;
+
+                if(__DEBUG === true)
+                    netdata.debug(service.module.name + ': ' + service.name + ': making ' + this.name + ' request: ' + netdata.stringify(service.request));
+
+                var req = http.request(service.request, function(response) {
+                    if(__DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': got server response...');
+
+                    var end = false;
+                    var data = '';
+                    response.setEncoding('utf8');
+
+                    if(response.statusCode !== 200) {
+                        if(end === false) {
+                            service.error('Got HTTP code ' + response.statusCode + ', failed to get data.');
+                            end = true;
+                            return callback(null);
+                        }
+                    }
+
+                    response.on('data', function(chunk) {
+                        if(end === false) data += chunk;
+                    });
+
+                    response.on('error', function() {
+                        if(end === false) {
+                            service.error(': Read error, failed to get data.');
+                            end = true;
+                            return callback(null);
+                        }
+                    });
+
+                    response.on('end', function() {
+                        if(end === false) {
+                            if(__DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': read completed.');
+                            end = true;
+                            return callback(data);
+                        }
+                    });
+                });
+
+                req.on('error', function(e) {
+                    if(__DEBUG === true) netdata.debug('Failed to make request: ' + netdata.stringify(service.request) + ', message: ' + e.message);
+                    service.error('Failed to make request, message: ' + e.message);
+                    return callback(null);
+                });
+
+                // write data to request body
+                if(typeof service.postData !== 'undefined' && service.request.method === 'POST') {
+                    if(__DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': posting data: ' + service.postData);
+                    req.write(service.postData);
+                }
+
+                req.end();
+            }
+        }
+    },
+
+    stringify: function(obj) {
+        return util.inspect(obj, {depth: 10});
+    },
+
+    zeropad2: function(s) {
+        return ("00" + s).slice(-2);
+    },
+
+    logdate: function(d) {
+        if(typeof d === 'undefined') d = new Date();
+        return d.getFullYear().toString() + '-' + this.zeropad2(d.getMonth() + 1) + '-' + this.zeropad2(d.getDate())
+            + ' ' + this.zeropad2(d.getHours()) + ':' + this.zeropad2(d.getMinutes()) + ':' + this.zeropad2(d.getSeconds());
+    },
+
+    // show debug info, if debug is enabled
+    debug: function(msg) {
+        if(this.options.DEBUG === true) {
+            console.error(this.logdate() + ': ' + netdata.options.filename + ': DEBUG: ' + ((typeof(msg) === 'object')?netdata.stringify(msg):msg).toString());
+        }
+    },
+
+    // log an error
+    error: function(msg) {
+        console.error(this.logdate() + ': ' + netdata.options.filename + ': ERROR: ' + ((typeof(msg) === 'object')?netdata.stringify(msg):msg).toString());
+    },
+
+    // send data to netdata
+    send: function(msg) {
+        console.log(msg.toString());
+    },
+
+    service: function(service) {
+        if(typeof service === 'undefined')
+            service = {};
+
+        var now = Date.now();
+
+        service._current_chart = null;  // the current chart we work on
+        service._queue = '';            // data to be sent to netdata
+
+        service.error_reported = false; // error log flood control
+
+        service.added = false;          // added to netdata.services
+        service.enabled = true;
+        service.updates = 0;
+        service.running = false;
+        service.started = 0;
+        service.ended = 0;
+
+        if(typeof service.module === 'undefined') {
+            service.module = { name: 'not-defined-module' };
+            service.error('Attempted to create service without a module.');
+            service.enabled = false;
+        }
+
+        if(typeof service.name === 'undefined') {
+            service.name = 'unnamed@' + service.module.name + '/' + now;
+        }
+
+        if(typeof service.processor === 'undefined')
+            service.processor = netdata.processors.http;
+
+        if(typeof service.update_every === 'undefined')
+            service.update_every = service.module.update_every;
+
+        if(typeof service.update_every === 'undefined')
+            service.update_every = netdata.options.update_every;
+
+        if(service.update_every < netdata.options.update_every)
+            service.update_every = netdata.options.update_every;
+
+        // align the runs
+        service.next_run = now - (now % (service.update_every * 1000)) + (service.update_every * 1000);
+
+        service.commit = function() {
+            if(this.added !== true) {
+                this.added = true;
+                
+                var now = Date.now();
+                this.next_run = now - (now % (service.update_every * 1000)) + (service.update_every * 1000);
+
+                netdata.services.push(this);
+                if(netdata.options.DEBUG === true) netdata.debug(this.module.name + ': ' + this.name + ': service committed.');
+            }
+        };
+
+        service.execute = function(responseProcessor) {
+            var __DEBUG = netdata.options.DEBUG;
+
+            if(service.enabled === false)
+                return responseProcessor(null);
+
+            this.module.active++;
+            this.running = true;
+            this.started = Date.now();
+            this.updates++;
+
+            if(__DEBUG === true)
+                netdata.debug(this.module.name + ': ' + this.name + ': making ' + this.processor.name + ' request: ' + netdata.stringify(this));
+
+            this.processor.process(this, function(response) {
+                service.ended = Date.now();
+                service.duration = service.ended - service.started;
+
+                if(typeof response === 'undefined')
+                    response = null;
+
+                if(response !== null)
+                    service.errorClear();
+
+                if(__DEBUG === true)
+                    netdata.debug(service.module.name + ': ' + service.name + ': processing ' + service.processor.name + ' response (received in ' + (service.ended - service.started).toString() + ' ms)');
+
+                responseProcessor(service, response);
+
+                service.running = false;
+                service.module.active--;
+                if(service.module.active < 0) {
+                    service.module.active = 0;
+                    if(__DEBUG === true)
+                        netdata.debug(service.module.name + ': active module counter below zero.');
+                }
+
+                if(service.module.active === 0) {
+                    // check if we run under configure
+                    if(service.module.configure_callback !== null) {
+                        if(__DEBUG === true)
+                            netdata.debug(service.module.name + ': configuration finish callback called from processResponse().');
+
+                        var configure_callback = service.module.configure_callback;
+                        service.module.configure_callback = null;
+                        configure_callback();
+                    }
+                }
+            });
+        };
+
+        service.update = function() {
+            if(netdata.options.DEBUG === true)
+                netdata.debug(this.module.name + ': ' + this.name + ': starting data collection...');
+
+            this.module.update(this, function() {
+                if(netdata.options.DEBUG === true)
+                    netdata.debug(service.module.name + ': ' + service.name + ': data collection ended in ' + service.duration.toString() + ' ms.');
+            });
+        };
+
+        service.error = function(message) {
+            if(this.error_reported === false) {
+                netdata.error(this.module.name + ': ' + this.name + ': ' + message);
+                this.error_reported = true;
+            }
+            else if(netdata.options.DEBUG === true)
+                netdata.debug(this.module.name + ': ' + this.name + ': ' + message);
+        };
+
+        service.errorClear = function() {
+            this.error_reported = false;
+        };
+
+        service.queue = function(txt) {
+            this._queue += txt + '\n';
+        };
+
+        service._send_chart_to_netdata = function(chart) {
+            // internal function to send a chart to netdata
+            this.queue('CHART "' + chart.id + '" "' + chart.name + '" "' + chart.title + '" "' + chart.units + '" "' + chart.family + '" "' + chart.context + '" "' + chart.type + '" ' + chart.priority.toString() + ' ' + chart.update_every.toString());
+
+            if(typeof(chart.dimensions) !== 'undefined') {
+                var dims = Object.keys(chart.dimensions);
+                var len = dims.length;
+                while(len--) {
+                    var d = chart.dimensions[dims[len]];
+
+                    this.queue('DIMENSION "' + d.id + '" "' + d.name + '" "' + d.algorithm + '" ' + d.multiplier.toString() + ' ' + d.divisor.toString() + ' ' + ((d.hidden === true) ? 'hidden' : '').toString());
+                    d._created = true;
+                    d._updated = false;
+                }
+            }
+
+            chart._created = true;
+            chart._updated = false;
+        };
+
+        // begin data collection for a chart
+        service.begin = function(chart) {
+            if(this._current_chart !== null && this._current_chart !== chart) {
+                this.error('Called begin() for chart ' + chart.id + ' while chart ' + this._current_chart.id + ' is still open. Closing it.');
+                this.end();
+            }
+
+            if(typeof(chart.id) === 'undefined' || netdata.charts[chart.id] !== chart) {
+                this.error('Called begin() for chart ' + chart.id + ' that is not mine. Where did you find it? Ignoring it.');
+                return false;
+            }
+
+            if(netdata.options.DEBUG === true) netdata.debug('setting current chart to ' + chart.id);
+            this._current_chart = chart;
+            this._current_chart._began = true;
+
+            if(this._current_chart._dimensions_count !== 0) {
+                if(this._current_chart._created === false || this._current_chart._updated === true)
+                    this._send_chart_to_netdata(this._current_chart);
+
+                var now = this.ended;
+                this.queue('BEGIN ' + this._current_chart.id + ' ' + ((this._current_chart._last_updated > 0)?((now - this._current_chart._last_updated) * 1000):'').toString());
+            }
+            // else this.error('Called begin() for chart ' + chart.id + ' which is empty.');
+
+            this._current_chart._last_updated = now;
+            this._current_chart._began = true;
+            this._current_chart._counter++;
+
+            return true;
+        };
+
+        // set a collected value for a chart
+        // we do most things on the first value we attempt to set
+        service.set = function(dimension, value) {
+            if(this._current_chart === null) {
+                this.error('Called set(' + dimension + ', ' + value + ') without an open chart.');
+                return false;
+            }
+
+            if(typeof(this._current_chart.dimensions[dimension]) === 'undefined') {
+                this.error('Called set(' + dimension + ', ' + value + ') but dimension "' + dimension + '" does not exist in chart "' + this._current_chart.id + '".');
+                return false;
+            }
+
+            if(typeof value === 'undefined' || value === null)
+                return false;
+
+            if(this._current_chart._dimensions_count !== 0) {
+                if (value instanceof Buffer)
+                    this.queue('SET ' + dimension + ' = 0x' + value.toString('hex'));
+                else
+                    this.queue('SET ' + dimension + ' = ' + value.toString());
+            }
+
+            return true;
+        };
+
+        // end data collection for the current chart - after calling begin()
+        service.end = function() {
+            if(this._current_chart !== null && this._current_chart._began === false) {
+                this.error('Called end() without an open chart.');
+                return false;
+            }
+
+            if(this._current_chart._dimensions_count !== 0) {
+                this.queue('END');
+                netdata.send(this._queue);
+            }
+
+            this._queue = '';
+            this._current_chart._began = false;
+            if(netdata.options.DEBUG === true) netdata.debug('sent chart ' + this._current_chart.id);
+            this._current_chart = null;
+            return true;
+        };
+
+        // discard the collected values for the current chart - after calling begin()
+        service.flush = function() {
+            if(this._current_chart === null || this._current_chart._began === false) {
+                this.error('Called flush() without an open chart.');
+                return false;
+            }
+
+            this._queue = '';
+            this._current_chart._began = false;
+            this._current_chart = null;
+            return true;
+        };
+
+        // create a netdata chart
+        service.chart = function(id, chart) {
+            var __DEBUG = netdata.options.DEBUG;
+
+            if(typeof(netdata.charts[id]) === 'undefined') {
+                netdata.charts[id] = {
+                    _created: false,
+                    _updated: true,
+                    _began: false,
+                    _counter: 0,
+                    _last_updated: 0,
+                    _dimensions_count: 0,
+                    id: id,
+                    name: id,
+                    title: 'untitled chart',
+                    units: 'a unit',
+                    family: '',
+                    context: '',
+                    type: netdata.chartTypes.line,
+                    priority: 50000,
+                    update_every: netdata.options.update_every,
+                    dimensions: {}
+                };
+            }
+
+            var c = netdata.charts[id];
+
+            if(typeof(chart.name) !== 'undefined' && chart.name !== c.name) {
+                if(__DEBUG === true) netdata.debug('chart ' + id + ' updated its name');
+                c.name = chart.name;
+                c._updated = true;
+            }
+
+            if(typeof(chart.title) !== 'undefined' && chart.title !== c.title) {
+                if(__DEBUG === true) netdata.debug('chart ' + id + ' updated its title');
+                c.title = chart.title;
+                c._updated = true;
+            }
+
+            if(typeof(chart.units) !== 'undefined' && chart.units !== c.units) {
+                if(__DEBUG === true) netdata.debug('chart ' + id + ' updated its units');
+                c.units = chart.units;
+                c._updated = true;
+            }
+
+            if(typeof(chart.family) !== 'undefined' && chart.family !== c.family) {
+                if(__DEBUG === true) netdata.debug('chart ' + id + ' updated its family');
+                c.family = chart.family;
+                c._updated = true;
+            }
+
+            if(typeof(chart.context) !== 'undefined' && chart.context !== c.context) {
+                if(__DEBUG === true) netdata.debug('chart ' + id + ' updated its context');
+                c.context = chart.context;
+                c._updated = true;
+            }
+
+            if(typeof(chart.type) !== 'undefined' && chart.type !== c.type) {
+                if(__DEBUG === true) netdata.debug('chart ' + id + ' updated its type');
+                c.type = chart.type;
+                c._updated = true;
+            }
+
+            if(typeof(chart.priority) !== 'undefined' && chart.priority !== c.priority) {
+                if(__DEBUG === true) netdata.debug('chart ' + id + ' updated its priority');
+                c.priority = chart.priority;
+                c._updated = true;
+            }
+
+            if(typeof(chart.update_every) !== 'undefined' && chart.update_every !== c.update_every) {
+                if(__DEBUG === true) netdata.debug('chart ' + id + ' updated its update_every from ' + c.update_every + ' to ' + chart.update_every);
+                c.update_every = chart.update_every;
+                c._updated = true;
+            }
+
+            if(typeof(chart.dimensions) !== 'undefined') {
+                var dims = Object.keys(chart.dimensions);
+                var len = dims.length;
+                while(len--) {
+                    var x = dims[len];
+
+                    if(typeof(c.dimensions[x]) === 'undefined') {
+                        c._dimensions_count++;
+
+                        c.dimensions[x] = {
+                            _created: false,
+                            _updated: false,
+                            id: x,                  // the unique id of the dimension
+                            name: x,                // the name of the dimension
+                            algorithm: netdata.chartAlgorithms.absolute,    // the id of the netdata algorithm
+                            multiplier: 1,          // the multiplier
+                            divisor: 1,             // the divisor
+                            hidden: false           // is hidden (boolean)
+                        };
+
+                        if(__DEBUG === true) netdata.debug('chart ' + id + ' created dimension ' + x);
+                        c._updated = true;
+                    }
+
+                    var dim = chart.dimensions[x];
+                    var d = c.dimensions[x];
+
+                    if(typeof(dim.name) !== 'undefined' && d.name !== dim.name) {
+                        if(__DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its name');
+                        d.name = dim.name;
+                        d._updated = true;
+                    }
+
+                    if(typeof(dim.algorithm) !== 'undefined' && d.algorithm !== dim.algorithm) {
+                        if(__DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its algorithm from ' + d.algorithm + ' to ' + dim.algorithm);
+                        d.algorithm = dim.algorithm;
+                        d._updated = true;
+                    }
+
+                    if(typeof(dim.multiplier) !== 'undefined' && d.multiplier !== dim.multiplier) {
+                        if(__DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its multiplier');
+                        d.multiplier = dim.multiplier;
+                        d._updated = true;
+                    }
+
+                    if(typeof(dim.divisor) !== 'undefined' && d.divisor !== dim.divisor) {
+                        if(__DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its divisor');
+                        d.divisor = dim.divisor;
+                        d._updated = true;
+                    }
+
+                    if(typeof(dim.hidden) !== 'undefined' && d.hidden !== dim.hidden) {
+                        if(__DEBUG === true) netdata.debug('chart ' + id + ', dimension ' + x + ' updated its hidden status');
+                        d.hidden = dim.hidden;
+                        d._updated = true;
+                    }
+
+                    if(d._updated) c._updated = true;
+                }
+            }
+
+            //if(netdata.options.DEBUG === true) netdata.debug(netdata.charts);
+            return netdata.charts[id];
+        };
+
+        return service;
+    },
+
+    runAllServices: function() {
+        if(netdata.options.DEBUG === true) netdata.debug('runAllServices()');
+
+        var now = Date.now();
+        var len = netdata.services.length;
+        while(len--) {
+            var service = netdata.services[len];
+
+            if(service.enabled === false || service.running === true) continue;
+            if(now <= service.next_run) continue;
+
+            service.update();
+
+            now = Date.now();
+            service.next_run = now - (now % (service.update_every * 1000)) + (service.update_every * 1000);
+        }
+
+        // 1/10th of update_every in pause
+        setTimeout(netdata.runAllServices, netdata.options.update_every * 100);
+    },
+
+    start: function() {
+        if(netdata.options.DEBUG === true) this.debug('started, services: ' + netdata.stringify(this.services));
+
+        if(this.services.length === 0) {
+            this.disableNodePlugin();
+
+            // eslint suggested way to exit
+            var exit = process.exit;
+            exit(1);
+        }
+        else this.runAllServices();
+    },
+
+    // disable the whole node.js plugin
+    disableNodePlugin: function() {
+        this.send('DISABLE');
+
+        // eslint suggested way to exit
+        var exit = process.exit;
+        exit(1);
+    },
+
+    requestFromParams: function(protocol, hostname, port, path, method) {
+        return {
+            protocol: protocol,
+            hostname: hostname,
+            port: port,
+            path: path,
+            //family: 4,
+            method: method,
+            headers: {
+                'Content-Type': 'application/x-www-form-urlencoded',
+                'Connection': 'keep-alive'
+            },
+            agent: new http.Agent({
+                keepAlive: true,
+                keepAliveMsecs: netdata.options.update_every * 1000,
+                maxSockets: 2, // it must be 2 to work
+                maxFreeSockets: 1
+            })
+        };
+    },
+
+    requestFromURL: function(a_url) {
+        var u = url.parse(a_url);
+        return netdata.requestFromParams(u.protocol, u.hostname, u.port, u.path, 'GET');
+    },
+
+    configure: function(module, config, callback) {
+        if(netdata.options.DEBUG === true) this.debug(module.name + ': configuring (update_every: ' + this.options.update_every + ')...');
+
+        module.active = 0;
+        module.update_every = this.options.update_every;
+
+        if(typeof config.update_every !== 'undefined')
+            module.update_every = config.update_every;
+
+        module.enable_autodetect = (config.enable_autodetect)?true:false;
+
+        if(typeof(callback) === 'function')
+            module.configure_callback = callback;
+        else
+            module.configure_callback = null;
+
+        var added = module.configure(config);
+
+        if(netdata.options.DEBUG === true) this.debug(module.name + ': configured, reporting ' + added + ' eligible services.');
+
+        if(module.configure_callback !== null && added === 0) {
+            if(netdata.options.DEBUG === true) this.debug(module.name + ': configuration finish callback called from configure().');
+            var configure_callback = module.configure_callback;
+            module.configure_callback = null;
+            configure_callback();
+        }
+
+        return added;
+    }
 };
 
-if(netdata.options.DEBUG === true) netdata.debug('loaded netdata from: ' + __filename);
+if(netdata.options.DEBUG === true) netdata.debug('loaded netdata from:', __filename);
 module.exports = netdata;