Skip to content
Navigation Menu
{{ message }}
forked from netdata/netdata
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathnetdata.js
More file actions
619 lines (502 loc) · 19.2 KB
/
Copy pathnetdata.js
File metadata and controls
619 lines (502 loc) · 19.2 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
'use strict';
var url = require('url');
var http = require('http');
var util = require('util');
var Int64 = require('node-int64');
/*
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
}
};
*/
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) {
var value64 = new Int64(value);
this.queue('SET ' + dimension + ' = ' + value64.toString(10));
}
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;
}
};
if(netdata.options.DEBUG === true) netdata.debug('loaded netdata from: ' + __filename);
module.exports = netdata;
You can’t perform that action at this time.