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) {
- if(netdata.options.DEBUG === true) netdata.debug('Failed to make request: ' + netdata.stringify(service.request) + ', message: ' + e.message);
- service.error('Failed to make 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});
- },
-
- zeropad2: function(s) {
- if(typeof s !== 'string')
- s = s.toString();
-
- switch(s.length) {
- case 0: return '00';
- case 1: return '0' + s;
- default: return s;
- }
- },
-
- logdate: function(d) {
- if(typeof d === 'undefined') d = new Date();
- return this.zeropad2(d.getFullYear()) + '-' + this.zeropad2(d.getMonth()) + '-' + this.zeropad2(d.getDay())
- + ' ' + 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 = 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.update_every * 1000);
-
- service.commit = function() {
- if(this.added !== true) {
- this.added = true;
-
- var now = new Date().getTime();
+ 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) {
+ if(netdata.options.DEBUG === true) netdata.debug('Failed to make request: ' + netdata.stringify(service.request) + ', message: ' + e.message);
+ service.error('Failed to make 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});
+ },
+
+ zeropad2: function(s) {
+ if(typeof s !== 'string')
+ s = s.toString();
+
+ switch(s.length) {
+ case 0: return '00';
+ case 1: return '0' + s;
+ default: return s;
+ }
+ },
+
+ logdate: function(d) {
+ if(typeof d === 'undefined') d = new Date();
+ return this.zeropad2(d.getFullYear()) + '-' + this.zeropad2(d.getMonth()) + '-' + this.zeropad2(d.getDay())
+ + ' ' + 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 = 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.update_every * 1000);
+
+ service.commit = function() {
+ if(this.added !== true) {
+ this.added = true;
+
+ var now = new Date().getTime();
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(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();
- 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();
- 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;
- }
+ 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();
+ 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();
+ 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;
+ }
};
if(netdata.options.DEBUG === true) netdata.debug('loaded netdata from: ' + __filename);
projects / netdata.git / commitdiff