1 | import proxy from 'superagent-proxy';
|
2 | import superagent from 'superagent';
|
3 | import url from 'url';
|
4 | import path from 'path';
|
5 | import { EventEmitter } from 'events';
|
6 |
|
7 | var hasOwn = Object.prototype.hasOwnProperty;
|
8 | var toStr = Object.prototype.toString;
|
9 | var defineProperty = Object.defineProperty;
|
10 | var gOPD = Object.getOwnPropertyDescriptor;
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11 |
|
12 | var isArray = function isArray(arr) {
|
13 | if (typeof Array.isArray === 'function') {
|
14 | return Array.isArray(arr);
|
15 | }
|
16 |
|
17 | return toStr.call(arr) === '[object Array]';
|
18 | };
|
19 |
|
20 | var isPlainObject = function isPlainObject(obj) {
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21 |
|
22 | if (!obj || toStr.call(obj) !== '[object Object]') {
|
23 | return false;
|
24 | }
|
25 |
|
26 | var hasOwnConstructor = hasOwn.call(obj, 'constructor');
|
27 | var hasIsPrototypeOf = obj.constructor && obj.constructor.prototype && hasOwn.call(obj.constructor.prototype, 'isPrototypeOf');
|
28 | // Not own constructor property must be Object
|
29 | if (obj.constructor && !hasOwnConstructor && !hasIsPrototypeOf) {
|
30 | return false;
|
31 | }
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32 |
|
33 | // Own properties are enumerated firstly, so to speed up,
|
34 | // if last one is own, then all properties are own.
|
35 | var key;
|
36 | for (key in obj) { /**/ }
|
37 |
|
38 | return typeof key === 'undefined' || hasOwn.call(obj, key);
|
39 | };
|
40 |
|
41 | // If name is '__proto__', and Object.defineProperty is available, define __proto__ as an own property on target
|
42 | var setProperty = function setProperty(target, options) {
|
43 | if (defineProperty && options.name === '__proto__') {
|
44 | defineProperty(target, options.name, {
|
45 | enumerable: true,
|
46 | configurable: true,
|
47 | value: options.newValue,
|
48 | writable: true
|
49 | });
|
50 | } else {
|
51 | target[options.name] = options.newValue;
|
52 | }
|
53 | };
|
54 |
|
55 | // Return undefined instead of __proto__ if '__proto__' is not an own property
|
56 | var getProperty = function getProperty(obj, name) {
|
57 | if (name === '__proto__') {
|
58 | if (!hasOwn.call(obj, name)) {
|
59 | return void 0;
|
60 | } else if (gOPD) {
|
61 | // In early versions of node, obj['__proto__'] is buggy when obj has
|
62 | // __proto__ as an own property. Object.getOwnPropertyDescriptor() works.
|
63 | return gOPD(obj, name).value;
|
64 | }
|
65 | }
|
66 |
|
67 | return obj[name];
|
68 | };
|
69 |
|
70 | var extend = function extend() {
|
71 |
|
72 | var options, name, src, copy, copyIsArray, clone;
|
73 | var target = arguments[0];
|
74 | var i = 1;
|
75 | var length = arguments.length;
|
76 | var deep = false;
|
77 |
|
78 | // Handle a deep copy situation
|
79 | if (typeof target === 'boolean') {
|
80 | deep = target;
|
81 | target = arguments[1] || {};
|
82 | // skip the boolean and the target
|
83 | i = 2;
|
84 | }
|
85 | if (target == null || (typeof target !== 'object' && typeof target !== 'function')) {
|
86 | target = {};
|
87 | }
|
88 |
|
89 | for (; i < length; ++i) {
|
90 | options = arguments[i];
|
91 | // Only deal with non-null/undefined values
|
92 | if (options != null) {
|
93 | // Extend the base object
|
94 | for (name in options) {
|
95 | src = getProperty(target, name);
|
96 | copy = getProperty(options, name);
|
97 |
|
98 | // Prevent never-ending loop
|
99 | if (target !== copy) {
|
100 | // Recurse if we're merging plain objects or arrays
|
101 | if (deep && copy && (isPlainObject(copy) || (copyIsArray = isArray(copy)))) {
|
102 | if (copyIsArray) {
|
103 | copyIsArray = false;
|
104 | clone = src && isArray(src) ? src : [];
|
105 | } else {
|
106 | clone = src && isPlainObject(src) ? src : {};
|
107 | }
|
108 |
|
109 | // Never move original objects, clone them
|
110 | setProperty(target, { name: name, newValue: extend(deep, clone, copy) });
|
111 |
|
112 | // Don't bring in undefined values
|
113 | } else if (typeof copy !== 'undefined') {
|
114 | setProperty(target, { name: name, newValue: copy });
|
115 | }
|
116 | }
|
117 | }
|
118 | }
|
119 | }
|
120 |
|
121 | // Return the modified object
|
122 | return target;
|
123 | };
|
124 |
|
125 | /**
|
126 | * Join two or more url pieces into one.
|
127 | *
|
128 | * Only the protocol/port/host in the first piece is saved,but all the get parameters
|
129 | * will be saved.
|
130 | *
|
131 | * @param {String|Function}... Multiple url pieces in function or string type.
|
132 | * @return {String} The URL joined.
|
133 | */
|
134 | var urljoin = function urljoin() {
|
135 |
|
136 | //convert to Array
|
137 | var pieces = Array.prototype.slice.call(arguments);
|
138 | var query = {};
|
139 | var first, paths;
|
140 |
|
141 | if (!pieces.length) {
|
142 | return '';
|
143 | } else if (1 === pieces.length) {
|
144 | return pieces[0];
|
145 | }
|
146 |
|
147 | paths = pieces.map(function(piece) {
|
148 | var pieceStr = 'function' === typeof piece ? piece() : String(piece || '');
|
149 |
|
150 | if (!pieceStr) {
|
151 | return '';
|
152 | }
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153 |
|
154 | var parsed = url.parse(pieceStr, true);
|
155 |
|
156 | if (!first && parsed) {
|
157 | first = parsed;
|
158 | }
|
159 |
|
160 | extend(query, parsed.query);
|
161 | return parsed.pathname;
|
162 | }).filter(function(piece) {
|
163 | return !!piece;
|
164 | });
|
165 |
|
166 | delete first.search; //we use query instead of search
|
167 | first.query = query;
|
168 | first.pathname = path.join.apply(path, paths).replace(new RegExp('\\' + path.sep, 'g'), '/');
|
169 | return url.format(first);
|
170 | };
|
171 |
|
172 | // Copyright 2016 Hound Technology, Inc. All rights reserved.
|
173 |
|
174 | const USER_AGENT = "libhoney-js/2.0.1";
|
175 |
|
176 | const _global =
|
177 | typeof window !== "undefined"
|
178 | ? window
|
179 | : typeof global !== "undefined"
|
180 | ? global
|
181 | : undefined;
|
182 |
|
183 | // how many events to collect in a batch
|
184 | const batchSizeTrigger = 50; // either when the eventQueue is > this length
|
185 | const batchTimeTrigger = 100; // or it's been more than this many ms since the first push
|
186 |
|
187 | // how many batches to maintain in parallel
|
188 | const maxConcurrentBatches = 10;
|
189 |
|
190 | // how many events to queue up for busy batches before we start dropping
|
191 | const pendingWorkCapacity = 10000;
|
192 |
|
193 | const emptyResponseCallback = function() {};
|
194 |
|
195 | const eachPromise = (arr, iteratorFn) =>
|
196 | arr.reduce((p, item) => {
|
197 | return p.then(() => {
|
198 | return iteratorFn(item);
|
199 | });
|
200 | }, Promise.resolve());
|
201 |
|
202 | const partition = (arr, keyfn, createfn, addfn) => {
|
203 | let result = Object.create(null);
|
204 | arr.forEach(v => {
|
205 | let key = keyfn(v);
|
206 | if (!result[key]) {
|
207 | result[key] = createfn(v);
|
208 | } else {
|
209 | addfn(result[key], v);
|
210 | }
|
211 | });
|
212 | return result;
|
213 | };
|
214 |
|
215 | class BatchEndpointAggregator {
|
216 | constructor(events) {
|
217 | this.batches = partition(
|
218 | events,
|
219 | /* keyfn */
|
220 | ev => `${ev.apiHost}_${ev.writeKey}_${ev.dataset}`,
|
221 | /* createfn */
|
222 | ev => ({
|
223 | apiHost: ev.apiHost,
|
224 | writeKey: ev.writeKey,
|
225 | dataset: ev.dataset,
|
226 | events: [ev]
|
227 | }),
|
228 | /* addfn */
|
229 | (batch, ev) => batch.events.push(ev)
|
230 | );
|
231 | }
|
232 |
|
233 | encodeBatchEvents(events) {
|
234 | let first = true;
|
235 | let numEncoded = 0;
|
236 | let encodedEvents = events.reduce((acc, ev) => {
|
237 | try {
|
238 | let encodedEvent = ev.toJSON(); // directly call toJSON, not JSON.stringify, because the latter wraps it in an additional set of quotes
|
239 | numEncoded++;
|
240 | let newAcc = acc + (!first ? "," : "") + encodedEvent;
|
241 | first = false;
|
242 | return newAcc;
|
243 | } catch (e) {
|
244 | ev.encodeError = e;
|
245 | return acc;
|
246 | }
|
247 | }, "");
|
248 |
|
249 | let encoded = "[" + encodedEvents + "]";
|
250 | return { encoded, numEncoded };
|
251 | }
|
252 | }
|
253 |
|
254 | /**
|
255 | * @private
|
256 | */
|
257 | class ValidatedEvent {
|
258 | constructor({
|
259 | timestamp,
|
260 | apiHost,
|
261 | postData,
|
262 | writeKey,
|
263 | dataset,
|
264 | sampleRate,
|
265 | metadata
|
266 | }) {
|
267 | this.timestamp = timestamp;
|
268 | this.apiHost = apiHost;
|
269 | this.postData = postData;
|
270 | this.writeKey = writeKey;
|
271 | this.dataset = dataset;
|
272 | this.sampleRate = sampleRate;
|
273 | this.metadata = metadata;
|
274 | }
|
275 |
|
276 | toJSON() {
|
277 | let fields = [];
|
278 | if (this.timestamp) {
|
279 | fields.push(`"time":${JSON.stringify(this.timestamp)}`);
|
280 | }
|
281 | if (this.sampleRate) {
|
282 | fields.push(`"samplerate":${JSON.stringify(this.sampleRate)}`);
|
283 | }
|
284 | if (this.postData) {
|
285 | fields.push(`"data":${this.postData}`);
|
286 | }
|
287 | return `{${fields.join(",")}}`;
|
288 | }
|
289 | }
|
290 |
|
291 | class MockTransmission {
|
292 | constructor(options) {
|
293 | this.constructorArg = options;
|
294 | this.events = [];
|
295 | }
|
296 |
|
297 | sendEvent(ev) {
|
298 | this.events.push(ev);
|
299 | }
|
300 |
|
301 | sendPresampledEvent(ev) {
|
302 | this.events.push(ev);
|
303 | }
|
304 |
|
305 | reset() {
|
306 | this.constructorArg = null;
|
307 | this.events = [];
|
308 | }
|
309 | }
|
310 |
|
311 | class WriterTransmission {
|
312 | sendEvent(ev) {
|
313 | console.log(JSON.stringify(ev));
|
314 | }
|
315 |
|
316 | sendPresampledEvent(ev) {
|
317 | console.log(JSON.stringify(ev));
|
318 | }
|
319 | }
|
320 |
|
321 | class NullTransmission {
|
322 | sendEvent(_ev) {}
|
323 |
|
324 | sendPresampledEvent(_ev) {}
|
325 | }
|
326 |
|
327 | /**
|
328 | * @private
|
329 | */
|
330 | class Transmission {
|
331 | constructor(options) {
|
332 | this._responseCallback = emptyResponseCallback;
|
333 | this._batchSizeTrigger = batchSizeTrigger;
|
334 | this._batchTimeTrigger = batchTimeTrigger;
|
335 | this._maxConcurrentBatches = maxConcurrentBatches;
|
336 | this._pendingWorkCapacity = pendingWorkCapacity;
|
337 | this._sendTimeoutId = -1;
|
338 | this._eventQueue = [];
|
339 | this._batchCount = 0;
|
340 |
|
341 | if (typeof options.responseCallback === "function") {
|
342 | this._responseCallback = options.responseCallback;
|
343 | }
|
344 | if (typeof options.batchSizeTrigger === "number") {
|
345 | this._batchSizeTrigger = Math.max(options.batchSizeTrigger, 1);
|
346 | }
|
347 | if (typeof options.batchTimeTrigger === "number") {
|
348 | this._batchTimeTrigger = options.batchTimeTrigger;
|
349 | }
|
350 | if (typeof options.maxConcurrentBatches === "number") {
|
351 | this._maxConcurrentBatches = options.maxConcurrentBatches;
|
352 | }
|
353 | if (typeof options.pendingWorkCapacity === "number") {
|
354 | this._pendingWorkCapacity = options.pendingWorkCapacity;
|
355 | }
|
356 |
|
357 | this._userAgentAddition = options.userAgentAddition || "";
|
358 | this._proxy = options.proxy;
|
359 |
|
360 | // Included for testing; to stub out randomness and verify that an event
|
361 | // was dropped.
|
362 | this._randomFn = Math.random;
|
363 | }
|
364 |
|
365 | _droppedCallback(ev, reason) {
|
366 | this._responseCallback([
|
367 | {
|
368 | metadata: ev.metadata,
|
369 | error: new Error(reason)
|
370 | }
|
371 | ]);
|
372 | }
|
373 |
|
374 | sendEvent(ev) {
|
375 | // bail early if we aren't sampling this event
|
376 | if (!this._shouldSendEvent(ev)) {
|
377 | this._droppedCallback(ev, "event dropped due to sampling");
|
378 | return;
|
379 | }
|
380 |
|
381 | this.sendPresampledEvent(ev);
|
382 | }
|
383 |
|
384 | sendPresampledEvent(ev) {
|
385 | if (this._eventQueue.length >= this._pendingWorkCapacity) {
|
386 | this._droppedCallback(ev, "queue overflow");
|
387 | return;
|
388 | }
|
389 | this._eventQueue.push(ev);
|
390 | if (this._eventQueue.length >= this._batchSizeTrigger) {
|
391 | this._sendBatch();
|
392 | } else {
|
393 | this._ensureSendTimeout();
|
394 | }
|
395 | }
|
396 |
|
397 | flush() {
|
398 | if (this._eventQueue.length === 0 && this._batchCount === 0) {
|
399 | // we're not currently waiting on anything, we're done!
|
400 | return Promise.resolve();
|
401 | }
|
402 |
|
403 | return new Promise(resolve => {
|
404 | this.flushCallback = () => {
|
405 | this.flushCallback = null;
|
406 | resolve();
|
407 | };
|
408 | });
|
409 | }
|
410 |
|
411 | _sendBatch() {
|
412 | if (this._batchCount === maxConcurrentBatches) {
|
413 | // don't start up another concurrent batch. the next timeout/sendEvent or batch completion
|
414 | // will cause us to send another
|
415 | return;
|
416 | }
|
417 |
|
418 | this._clearSendTimeout();
|
419 |
|
420 | this._batchCount++;
|
421 |
|
422 | let batchAgg = new BatchEndpointAggregator(
|
423 | this._eventQueue.splice(0, this._batchSizeTrigger)
|
424 | );
|
425 |
|
426 | const finishBatch = () => {
|
427 | this._batchCount--;
|
428 |
|
429 | let queueLength = this._eventQueue.length;
|
430 | if (queueLength > 0) {
|
431 | if (queueLength >= this._batchSizeTrigger) {
|
432 | this._sendBatch();
|
433 | } else {
|
434 | this._ensureSendTimeout();
|
435 | }
|
436 | return;
|
437 | }
|
438 |
|
439 | if (this._batchCount === 0 && this.flushCallback) {
|
440 | this.flushCallback();
|
441 | }
|
442 | };
|
443 |
|
444 | let batches = Object.keys(batchAgg.batches).map(k => batchAgg.batches[k]);
|
445 | eachPromise(batches, batch => {
|
446 | let url = urljoin(batch.apiHost, "/1/batch", batch.dataset);
|
447 | let req = superagent.post(url);
|
448 | if (this._proxy) {
|
449 | req = proxy(req, this._proxy);
|
450 | }
|
451 |
|
452 | let { encoded, numEncoded } = batchAgg.encodeBatchEvents(batch.events);
|
453 | return new Promise(resolve => {
|
454 | // if we failed to encode any of the events, no point in sending anything to honeycomb
|
455 | if (numEncoded === 0) {
|
456 | this._responseCallback(
|
457 | batch.events.map(ev => ({
|
458 | metadata: ev.metadata,
|
459 | error: ev.encodeError
|
460 | }))
|
461 | );
|
462 | resolve();
|
463 | return;
|
464 | }
|
465 |
|
466 | let userAgent = USER_AGENT;
|
467 | let trimmedAddition = this._userAgentAddition.trim();
|
468 | if (trimmedAddition) {
|
469 | userAgent = `${USER_AGENT} ${trimmedAddition}`;
|
470 | }
|
471 |
|
472 | let start = Date.now();
|
473 | req
|
474 | .set("X-Honeycomb-Team", batch.writeKey)
|
475 | .set("User-Agent", userAgent)
|
476 | .type("json")
|
477 | .send(encoded)
|
478 | .end((err, res) => {
|
479 | let end = Date.now();
|
480 |
|
481 | if (err) {
|
482 | this._responseCallback(
|
483 | batch.events.map(ev => ({
|
484 | // eslint-disable-next-line camelcase
|
485 | status_code: ev.encodeError ? undefined : err.status,
|
486 | duration: end - start,
|
487 | metadata: ev.metadata,
|
488 | error: ev.encodeError || err
|
489 | }))
|
490 | );
|
491 | } else {
|
492 | let response = JSON.parse(res.text);
|
493 | let respIdx = 0;
|
494 | this._responseCallback(
|
495 | batch.events.map(ev => {
|
496 | if (ev.encodeError) {
|
497 | return {
|
498 | duration: end - start,
|
499 | metadata: ev.metadata,
|
500 | error: ev.encodeError
|
501 | };
|
502 | } else {
|
503 | let nextResponse = response[respIdx++];
|
504 | return {
|
505 | // eslint-disable-next-line camelcase
|
506 | status_code: nextResponse.status,
|
507 | duration: end - start,
|
508 | metadata: ev.metadata,
|
509 | error: nextResponse.err
|
510 | };
|
511 | }
|
512 | })
|
513 | );
|
514 | }
|
515 | // we resolve unconditionally to continue the iteration in eachSeries. errors will cause
|
516 | // the event to be re-enqueued/dropped.
|
517 | resolve();
|
518 | });
|
519 | });
|
520 | })
|
521 | .then(finishBatch)
|
522 | .catch(finishBatch);
|
523 | }
|
524 |
|
525 | _shouldSendEvent(ev) {
|
526 | let { sampleRate } = ev;
|
527 | if (sampleRate <= 1) {
|
528 | return true;
|
529 | }
|
530 | return this._randomFn() < 1 / sampleRate;
|
531 | }
|
532 |
|
533 | _ensureSendTimeout() {
|
534 | if (this._sendTimeoutId === -1) {
|
535 | this._sendTimeoutId = _global.setTimeout(
|
536 | () => this._sendBatch(),
|
537 | this._batchTimeTrigger
|
538 | );
|
539 | }
|
540 | }
|
541 |
|
542 | _clearSendTimeout() {
|
543 | if (this._sendTimeoutId !== -1) {
|
544 | _global.clearTimeout(this._sendTimeoutId);
|
545 | this._sendTimeoutId = -1;
|
546 | }
|
547 | }
|
548 | }
|
549 |
|
550 | // Copyright 2016 Hound Technology, Inc. All rights reserved.
|
551 | // Use of this source code is governed by the Apache License 2.0
|
552 | // license that can be found in the LICENSE file.
|
553 |
|
554 | /**
|
555 | * a simple function that offers the same interface
|
556 | * for both Map and object key interation.
|
557 | * @private
|
558 | */
|
559 | function foreach(col, f) {
|
560 | if (!col) {
|
561 | return;
|
562 | }
|
563 | if (col instanceof Map) {
|
564 | col.forEach(f);
|
565 | } else {
|
566 | Object.getOwnPropertyNames(col).forEach(k => f(col[k], k));
|
567 | }
|
568 | }
|
569 |
|
570 | // Copyright 2016 Hound Technology, Inc. All rights reserved.
|
571 |
|
572 | /**
|
573 | * Represents an individual event to send to Honeycomb.
|
574 | * @class
|
575 | */
|
576 | class Event {
|
577 | /**
|
578 | * @constructor
|
579 | * private
|
580 | */
|
581 | constructor(libhoney, fields, dynFields) {
|
582 | this.data = Object.create(null);
|
583 | this.metadata = null;
|
584 |
|
585 | /**
|
586 | * The hostname for the Honeycomb API server to which to send this event. default:
|
587 | * https://api.honeycomb.io/
|
588 | *
|
589 | * @type {string}
|
590 | */
|
591 | this.apiHost = "";
|
592 | /**
|
593 | * The Honeycomb authentication token for this event. Find your team write key at
|
594 | * https://ui.honeycomb.io/account
|
595 | *
|
596 | * @type {string}
|
597 | */
|
598 | this.writeKey = "";
|
599 | /**
|
600 | * The name of the Honeycomb dataset to which to send this event.
|
601 | *
|
602 | * @type {string}
|
603 | */
|
604 | this.dataset = "";
|
605 | /**
|
606 | * The rate at which to sample this event.
|
607 | *
|
608 | * @type {number}
|
609 | */
|
610 | this.sampleRate = 1;
|
611 |
|
612 | /**
|
613 | * If set, specifies the timestamp associated with this event. If unset,
|
614 | * defaults to Date.now();
|
615 | *
|
616 | * @type {Date}
|
617 | */
|
618 | this.timestamp = null;
|
619 |
|
620 | foreach(fields, (v, k) => this.addField(k, v));
|
621 | foreach(dynFields, (v, k) => this.addField(k, v()));
|
622 |
|
623 | // stash this away for .send()
|
624 | this._libhoney = libhoney;
|
625 | }
|
626 |
|
627 | /**
|
628 | * adds a group of field->values to this event.
|
629 | * @param {Object|Map} data field->value mapping.
|
630 | * @returns {Event} this event.
|
631 | * @example <caption>using an object</caption>
|
632 | * builder.newEvent()
|
633 | * .add ({
|
634 | * responseTime_ms: 100,
|
635 | * httpStatusCode: 200
|
636 | * })
|
637 | * .send();
|
638 | * @example <caption>using an ES2015 map</caption>
|
639 | * let map = new Map();
|
640 | * map.set("responseTime_ms", 100);
|
641 | * map.set("httpStatusCode", 200);
|
642 | * let event = honey.newEvent();
|
643 | * event.add (map);
|
644 | * event.send();
|
645 | */
|
646 | add(data) {
|
647 | foreach(data, (v, k) => this.addField(k, v));
|
648 | return this;
|
649 | }
|
650 |
|
651 | /**
|
652 | * adds a single field->value mapping to this event.
|
653 | * @param {string} name
|
654 | * @param {any} val
|
655 | * @returns {Event} this event.
|
656 | * @example
|
657 | * builder.newEvent()
|
658 | * .addField("responseTime_ms", 100)
|
659 | * .send();
|
660 | */
|
661 | addField(name, val) {
|
662 | if (val === undefined) {
|
663 | this.data[name] = null;
|
664 | return this;
|
665 | }
|
666 | this.data[name] = val;
|
667 | return this;
|
668 | }
|
669 |
|
670 | /**
|
671 | * attaches data to an event that is not transmitted to honeycomb, but instead is available when checking the send responses.
|
672 | * @param {any} md
|
673 | * @returns {Event} this event.
|
674 | */
|
675 | addMetadata(md) {
|
676 | this.metadata = md;
|
677 | return this;
|
678 | }
|
679 |
|
680 | /**
|
681 | * Sends this event to honeycomb, sampling if necessary.
|
682 | */
|
683 | send() {
|
684 | this._libhoney.sendEvent(this);
|
685 | }
|
686 |
|
687 | /**
|
688 | * Dispatch an event to be sent to Honeycomb. Assumes sampling has already happened,
|
689 | * and will send every event handed to it.
|
690 | */
|
691 | sendPresampled() {
|
692 | this._libhoney.sendPresampledEvent(this);
|
693 | }
|
694 | }
|
695 |
|
696 | // Copyright 2016 Hound Technology, Inc. All rights reserved.
|
697 |
|
698 | /**
|
699 | * Allows piecemeal creation of events.
|
700 | * @class
|
701 | */
|
702 | class Builder {
|
703 | /**
|
704 | * @constructor
|
705 | * @private
|
706 | */
|
707 | constructor(libhoney, fields, dynFields) {
|
708 | this._libhoney = libhoney;
|
709 | this._fields = Object.create(null);
|
710 | this._dynFields = Object.create(null);
|
711 |
|
712 | /**
|
713 | * The hostname for the Honeycomb API server to which to send events created through this
|
714 | * builder. default: https://api.honeycomb.io/
|
715 | *
|
716 | * @type {string}
|
717 | */
|
718 | this.apiHost = "";
|
719 | /**
|
720 | * The Honeycomb authentication token. If it is set on a libhoney instance it will be used as the
|
721 | * default write key for all events. If absent, it must be explicitly set on a Builder or
|
722 | * Event. Find your team write key at https://ui.honeycomb.io/account
|
723 | *
|
724 | * @type {string}
|
725 | */
|
726 | this.writeKey = "";
|
727 | /**
|
728 | * The name of the Honeycomb dataset to which to send these events. If it is specified during
|
729 | * libhoney initialization, it will be used as the default dataset for all events. If absent,
|
730 | * dataset must be explicitly set on a builder or event.
|
731 | *
|
732 | * @type {string}
|
733 | */
|
734 | this.dataset = "";
|
735 | /**
|
736 | * The rate at which to sample events. Default is 1, meaning no sampling. If you want to send one
|
737 | * event out of every 250 times send() is called, you would specify 250 here.
|
738 | *
|
739 | * @type {number}
|
740 | */
|
741 | this.sampleRate = 1;
|
742 |
|
743 | foreach(fields, (v, k) => this.addField(k, v));
|
744 | foreach(dynFields, (v, k) => this.addDynamicField(k, v));
|
745 | }
|
746 |
|
747 | /**
|
748 | * adds a group of field->values to the events created from this builder.
|
749 | * @param {Object|Map<string, any>} data field->value mapping.
|
750 | * @returns {Builder} this Builder instance.
|
751 | * @example <caption>using an object</caption>
|
752 | * var honey = new libhoney();
|
753 | * var builder = honey.newBuilder();
|
754 | * builder.add ({
|
755 | * component: "web",
|
756 | * depth: 200
|
757 | * });
|
758 | * @example <caption>using an ES2015 map</caption>
|
759 | * let map = new Map();
|
760 | * map.set("component", "web");
|
761 | * map.set("depth", 200);
|
762 | * builder.add (map);
|
763 | */
|
764 | add(data) {
|
765 | foreach(data, (v, k) => this.addField(k, v));
|
766 | return this;
|
767 | }
|
768 |
|
769 | /**
|
770 | * adds a single field->value mapping to the events created from this builder.
|
771 | * @param {string} name
|
772 | * @param {any} val
|
773 | * @returns {Builder} this Builder instance.
|
774 | * @example
|
775 | * builder.addField("component", "web");
|
776 | */
|
777 | addField(name, val) {
|
778 | if (val === undefined) {
|
779 | this._fields[name] = null;
|
780 | return this;
|
781 | }
|
782 | this._fields[name] = val;
|
783 | return this;
|
784 | }
|
785 |
|
786 | /**
|
787 | * adds a single field->dynamic value function, which is invoked to supply values when events are created from this builder.
|
788 | * @param {string} name the name of the field to add to events.
|
789 | * @param {function(): any} fn the function called to generate the value for this field.
|
790 | * @returns {Builder} this Builder instance.
|
791 | * @example
|
792 | * builder.addDynamicField("process_heapUsed", () => process.memoryUsage().heapUsed);
|
793 | */
|
794 | addDynamicField(name, fn) {
|
795 | this._dynFields[name] = fn;
|
796 | }
|
797 |
|
798 | /**
|
799 | * creates and sends an event, including all builder fields/dynFields, as well as anything in the optional data parameter.
|
800 | * @param {Object|Map<string, any>} [data] field->value mapping to add to the event sent.
|
801 | * @example <caption>empty sendNow</caption>
|
802 | * builder.sendNow(); // sends just the data that has been added via add/addField/addDynamicField.
|
803 | * @example <caption>adding data at send-time</caption>
|
804 | * builder.sendNow({
|
805 | * additionalField: value
|
806 | * });
|
807 | */
|
808 | sendNow(data) {
|
809 | let ev = this.newEvent();
|
810 | ev.add(data);
|
811 | ev.send();
|
812 | }
|
813 |
|
814 | /**
|
815 | * creates and returns a new Event containing all fields/dynFields from this builder, that can be further fleshed out and sent on its own.
|
816 | * @returns {Event} an Event instance
|
817 | * @example <caption>adding data at send-time</caption>
|
818 | * let ev = builder.newEvent();
|
819 | * ev.addField("additionalField", value);
|
820 | * ev.send();
|
821 | */
|
822 | newEvent() {
|
823 | let ev = new Event(this._libhoney, this._fields, this._dynFields);
|
824 | ev.apiHost = this.apiHost;
|
825 | ev.writeKey = this.writeKey;
|
826 | ev.dataset = this.dataset;
|
827 | ev.sampleRate = this.sampleRate;
|
828 | return ev;
|
829 | }
|
830 |
|
831 | /**
|
832 | * creates and returns a clone of this builder, merged with fields and dynFields passed as arguments.
|
833 | * @param {Object|Map<string, any>} fields a field->value mapping to merge into the new builder.
|
834 | * @param {Object|Map<string, any>} dynFields a field->dynamic function mapping to merge into the new builder.
|
835 | * @returns {Builder} a Builder instance
|
836 | * @example <caption>no additional fields/dyn_field</caption>
|
837 | * let anotherBuilder = builder.newBuilder();
|
838 | * @example <caption>additional fields/dyn_field</caption>
|
839 | * let anotherBuilder = builder.newBuilder({ requestId },
|
840 | * {
|
841 | * process_heapUsed: () => process.memoryUsage().heapUsed
|
842 | * });
|
843 | */
|
844 | newBuilder(fields, dynFields) {
|
845 | let b = new Builder(this._libhoney, this._fields, this._dynFields);
|
846 |
|
847 | foreach(fields, (v, k) => b.addField(k, v));
|
848 | foreach(dynFields, (v, k) => b.addDynamicField(k, v));
|
849 |
|
850 | b.apiHost = this.apiHost;
|
851 | b.writeKey = this.writeKey;
|
852 | b.dataset = this.dataset;
|
853 | b.sampleRate = this.sampleRate;
|
854 |
|
855 | return b;
|
856 | }
|
857 | }
|
858 |
|
859 | // Copyright 2016 Hound Technology, Inc. All rights reserved.
|
860 |
|
861 | const defaults = Object.freeze({
|
862 | apiHost: "https://api.honeycomb.io/",
|
863 |
|
864 | // http
|
865 | proxy: undefined,
|
866 |
|
867 | // sample rate of data. causes us to send 1/sample-rate of events
|
868 | // i.e. `sampleRate: 10` means we only send 1/10th the events.
|
869 | sampleRate: 1,
|
870 |
|
871 | // transmission constructor, or a string to pick one of our builtin versions.
|
872 | // we fall back to the base impl if worker or a custom implementation throws on init.
|
873 | // string options available are:
|
874 | // - "base": the default transmission implementation
|
875 | // - "worker": a web-worker based transmission (not currently available, see https://github.com/honeycombio/libhoney-js/issues/22)
|
876 | // - "mock": an implementation that accumulates all events sent
|
877 | // - "writer": an implementation that logs to the console all events sent
|
878 | // - "null": an implementation that does nothing
|
879 | transmission: "base",
|
880 |
|
881 | // batch triggers
|
882 | batchSizeTrigger: 50, // we send a batch to the api when we have this many outstanding events
|
883 | batchTimeTrigger: 100, // ... or after this many ms has passed.
|
884 |
|
885 | // batches are sent serially (one event at a time), so we allow multiple concurrent batches
|
886 | // to increase parallelism while sending.
|
887 | maxConcurrentBatches: 10,
|
888 |
|
889 | // the maximum number of pending events we allow in our to-be-batched-and-transmitted queue before dropping them.
|
890 | pendingWorkCapacity: 10000,
|
891 |
|
892 | // the maximum number of responses we enqueue before we begin dropping them.
|
893 | maxResponseQueueSize: 1000,
|
894 |
|
895 | // if this is set to true, all sending is disabled. useful for disabling libhoney when testing
|
896 | disabled: false,
|
897 |
|
898 | // If this is non-empty, append it to the end of the User-Agent header.
|
899 | userAgentAddition: ""
|
900 | });
|
901 |
|
902 | /**
|
903 | * libhoney aims to make it as easy as possible to create events and send them on into Honeycomb.
|
904 | *
|
905 | * See https://honeycomb.io/docs for background on this library.
|
906 | * @class
|
907 | */
|
908 | class Libhoney extends EventEmitter {
|
909 | /**
|
910 | * Constructs a libhoney context in order to configure default behavior,
|
911 | * though each of its members (`apiHost`, `writeKey`, `dataset`, and
|
912 | * `sampleRate`) may in fact be overridden on a specific Builder or Event.
|
913 | *
|
914 | * @param {Object} [opts] overrides for the defaults
|
915 | * @param {string} [opts.apiHost=https://api.honeycomb.io] - Server host to receive Honeycomb events.
|
916 | * @param {string} [opts.proxy] - The proxy to send events through.
|
917 | * @param {string} opts.writeKey - Write key for your Honeycomb team. (Required)
|
918 | * @param {string} opts.dataset - Name of the dataset that should contain this event. The dataset will be created for your team if it doesn't already exist.
|
919 | * @param {number} [opts.sampleRate=1] - Sample rate of data. If set, causes us to send 1/sampleRate of events and drop the rest.
|
920 | * @param {number} [opts.batchSizeTrigger=50] - We send a batch to the API when this many outstanding events exist in our event queue.
|
921 | * @param {number} [opts.batchTimeTrigger=100] - We send a batch to the API after this many milliseconds have passed.
|
922 | * @param {number} [opts.maxConcurrentBatches=10] - We process batches concurrently to increase parallelism while sending.
|
923 | * @param {number} [opts.pendingWorkCapacity=10000] - The maximum number of pending events we allow to accumulate in our sending queue before dropping them.
|
924 | * @param {number} [opts.maxResponseQueueSize=1000] - The maximum number of responses we enqueue before dropping them.
|
925 | * @param {boolean} [opts.disabled=false] - Disable transmission of events to the specified `apiHost`, particularly useful for testing or development.
|
926 | * @constructor
|
927 | * @example
|
928 | * import Libhoney from 'libhoney';
|
929 | * let honey = new Libhoney({
|
930 | * writeKey: "YOUR_WRITE_KEY",
|
931 | * dataset: "honeycomb-js-example",
|
932 | * // disabled: true // uncomment when testing or in development
|
933 | * });
|
934 | */
|
935 | constructor(opts) {
|
936 | super();
|
937 | this._options = Object.assign(
|
938 | { responseCallback: this._responseCallback.bind(this) },
|
939 | defaults,
|
940 | opts
|
941 | );
|
942 | this._transmission = getAndInitTransmission(
|
943 | this._options.transmission,
|
944 | this._options
|
945 | );
|
946 | this._usable = this._transmission !== null;
|
947 | this._builder = new Builder(this);
|
948 |
|
949 | this._builder.apiHost = this._options.apiHost;
|
950 | this._builder.writeKey = this._options.writeKey;
|
951 | this._builder.dataset = this._options.dataset;
|
952 | this._builder.sampleRate = this._options.sampleRate;
|
953 |
|
954 | this._responseQueue = [];
|
955 | }
|
956 |
|
957 | _responseCallback(responses) {
|
958 | let queue = this._responseQueue;
|
959 | if (queue.length < this._options.maxResponseQueueSize) {
|
960 | this._responseQueue = this._responseQueue.concat(responses);
|
961 | }
|
962 | this.emit("response", this._responseQueue);
|
963 | }
|
964 |
|
965 | /**
|
966 | * The transmission implementation in use for this libhoney instance. Useful when mocking libhoney (specify
|
967 | * "mock" for options.transmission, and use this field to get at the list of events sent through libhoney.)
|
968 | */
|
969 | get transmission() {
|
970 | return this._transmission;
|
971 | }
|
972 |
|
973 | /**
|
974 | * The hostname for the Honeycomb API server to which to send events created through this libhoney
|
975 | * instance. default: https://api.honeycomb.io/
|
976 | *
|
977 | * @type {string}
|
978 | */
|
979 | set apiHost(v) {
|
980 | this._builder.apiHost = v;
|
981 | }
|
982 | /**
|
983 | * The hostname for the Honeycomb API server to which to send events created through this libhoney
|
984 | * instance. default: https://api.honeycomb.io/
|
985 | *
|
986 | * @type {string}
|
987 | */
|
988 | get apiHost() {
|
989 | return this._builder.apiHost;
|
990 | }
|
991 |
|
992 | /**
|
993 | * The Honeycomb authentication token. If it is set on a libhoney instance it will be used as the
|
994 | * default write key for all events. If absent, it must be explicitly set on a Builder or
|
995 | * Event. Find your team write key at https://ui.honeycomb.io/account
|
996 | *
|
997 | * @type {string}
|
998 | */
|
999 | set writeKey(v) {
|
1000 | this._builder.writeKey = v;
|
1001 | }
|
1002 | /**
|
1003 | * The Honeycomb authentication token. If it is set on a libhoney instance it will be used as the
|
1004 | * default write key for all events. If absent, it must be explicitly set on a Builder or
|
1005 | * Event. Find your team write key at https://ui.honeycomb.io/account
|
1006 | *
|
1007 | * @type {string}
|
1008 | */
|
1009 | get writeKey() {
|
1010 | return this._builder.writeKey;
|
1011 | }
|
1012 |
|
1013 | /**
|
1014 | * The name of the Honeycomb dataset to which to send events through this libhoney instance. If
|
1015 | * it is specified during libhoney initialization, it will be used as the default dataset for all
|
1016 | * events. If absent, dataset must be explicitly set on a builder or event.
|
1017 | *
|
1018 | * @type {string}
|
1019 | */
|
1020 | set dataset(v) {
|
1021 | this._builder.dataset = v;
|
1022 | }
|
1023 | /**
|
1024 | * The name of the Honeycomb dataset to which to send these events through this libhoney instance.
|
1025 | * If it is specified during libhoney initialization, it will be used as the default dataset for
|
1026 | * all events. If absent, dataset must be explicitly set on a builder or event.
|
1027 | *
|
1028 | * @type {string}
|
1029 | */
|
1030 | get dataset() {
|
1031 | return this._builder.dataset;
|
1032 | }
|
1033 |
|
1034 | /**
|
1035 | * The rate at which to sample events. Default is 1, meaning no sampling. If you want to send one
|
1036 | * event out of every 250 times send() is called, you would specify 250 here.
|
1037 | *
|
1038 | * @type {number}
|
1039 | */
|
1040 | set sampleRate(v) {
|
1041 | this._builder.sampleRate = v;
|
1042 | }
|
1043 | /**
|
1044 | * The rate at which to sample events. Default is 1, meaning no sampling. If you want to send one
|
1045 | * event out of every 250 times send() is called, you would specify 250 here.
|
1046 | *
|
1047 | * @type {number}
|
1048 | */
|
1049 | get sampleRate() {
|
1050 | return this._builder.sampleRate;
|
1051 | }
|
1052 |
|
1053 | /**
|
1054 | * sendEvent takes events of the following form:
|
1055 | *
|
1056 | * {
|
1057 | * data: a JSON-serializable object, keys become colums in Honeycomb
|
1058 | * timestamp [optional]: time for this event, defaults to now()
|
1059 | * writeKey [optional]: your team's write key. overrides the libhoney instance's value.
|
1060 | * dataset [optional]: the data set name. overrides the libhoney instance's value.
|
1061 | * sampleRate [optional]: cause us to send 1 out of sampleRate events. overrides the libhoney instance's value.
|
1062 | * }
|
1063 | *
|
1064 | * Sampling is done based on the supplied sampleRate, so events passed to this method might not
|
1065 | * actually be sent to Honeycomb.
|
1066 | * @private
|
1067 | */
|
1068 | sendEvent(event) {
|
1069 | let transmitEvent = this.validateEvent(event);
|
1070 | if (!transmitEvent) {
|
1071 | return;
|
1072 | }
|
1073 |
|
1074 | this._transmission.sendEvent(transmitEvent);
|
1075 | }
|
1076 |
|
1077 | /**
|
1078 | * sendPresampledEvent takes events of the following form:
|
1079 | *
|
1080 | * {
|
1081 | * data: a JSON-serializable object, keys become colums in Honeycomb
|
1082 | * timestamp [optional]: time for this event, defaults to now()
|
1083 | * writeKey [optional]: your team's write key. overrides the libhoney instance's value.
|
1084 | * dataset [optional]: the data set name. overrides the libhoney instance's value.
|
1085 | * sampleRate: the rate this event has already been sampled.
|
1086 | * }
|
1087 | *
|
1088 | * Sampling is presumed to have already been done (at the supplied sampledRate), so all events passed to this method
|
1089 | * are sent to Honeycomb.
|
1090 | * @private
|
1091 | */
|
1092 | sendPresampledEvent(event) {
|
1093 | let transmitEvent = this.validateEvent(event);
|
1094 | if (!transmitEvent) {
|
1095 | return;
|
1096 | }
|
1097 |
|
1098 | this._transmission.sendPresampledEvent(transmitEvent);
|
1099 | }
|
1100 |
|
1101 | /**
|
1102 | * validateEvent takes an event and validates its structure and contents.
|
1103 | *
|
1104 | * @returns {Object} the validated libhoney Event. May return undefined if
|
1105 | * the event was invalid in some way or unable to be sent.
|
1106 | * @private
|
1107 | */
|
1108 | validateEvent(event) {
|
1109 | if (!this._usable) return null;
|
1110 |
|
1111 | let timestamp = event.timestamp || Date.now();
|
1112 | if (typeof timestamp === "string" || typeof timestamp === "number")
|
1113 | timestamp = new Date(timestamp);
|
1114 |
|
1115 | if (typeof event.data !== "object" || event.data === null) {
|
1116 | console.error(".data must be an object");
|
1117 | return null;
|
1118 | }
|
1119 | let postData;
|
1120 | try {
|
1121 | postData = JSON.stringify(event.data);
|
1122 | } catch (e) {
|
1123 | console.error("error converting event data to JSON: " + e);
|
1124 | return null;
|
1125 | }
|
1126 |
|
1127 | let apiHost = event.apiHost;
|
1128 | if (typeof apiHost !== "string" || apiHost === "") {
|
1129 | console.error(".apiHost must be a non-empty string");
|
1130 | return null;
|
1131 | }
|
1132 |
|
1133 | let writeKey = event.writeKey;
|
1134 | if (typeof writeKey !== "string" || writeKey === "") {
|
1135 | console.error(".writeKey must be a non-empty string");
|
1136 | return null;
|
1137 | }
|
1138 |
|
1139 | let dataset = event.dataset;
|
1140 | if (typeof dataset !== "string" || dataset === "") {
|
1141 | console.error(".dataset must be a non-empty string");
|
1142 | return null;
|
1143 | }
|
1144 |
|
1145 | let sampleRate = event.sampleRate;
|
1146 | if (typeof sampleRate !== "number") {
|
1147 | console.error(".sampleRate must be a number");
|
1148 | return null;
|
1149 | }
|
1150 |
|
1151 | let metadata = event.metadata;
|
1152 | return new ValidatedEvent({
|
1153 | timestamp,
|
1154 | apiHost,
|
1155 | postData,
|
1156 | writeKey,
|
1157 | dataset,
|
1158 | sampleRate,
|
1159 | metadata
|
1160 | });
|
1161 | }
|
1162 |
|
1163 | /**
|
1164 | * adds a group of field->values to the global Builder.
|
1165 | * @param {Object|Map<string, any>} data field->value mapping.
|
1166 | * @returns {Libhoney} this libhoney instance.
|
1167 | * @example <caption>using an object</caption>
|
1168 | * honey.add ({
|
1169 | * buildID: "a6cc38a1",
|
1170 | * env: "staging"
|
1171 | * });
|
1172 | * @example <caption>using an ES2015 map</caption>
|
1173 | * let map = new Map();
|
1174 | * map.set("build_id", "a6cc38a1");
|
1175 | * map.set("env", "staging");
|
1176 | * honey.add (map);
|
1177 | */
|
1178 | add(data) {
|
1179 | this._builder.add(data);
|
1180 | return this;
|
1181 | }
|
1182 |
|
1183 | /**
|
1184 | * adds a single field->value mapping to the global Builder.
|
1185 | * @param {string} name name of field to add.
|
1186 | * @param {any} val value of field to add.
|
1187 | * @returns {Libhoney} this libhoney instance.
|
1188 | * @example
|
1189 | * honey.addField("build_id", "a6cc38a1");
|
1190 | */
|
1191 | addField(name, val) {
|
1192 | this._builder.addField(name, val);
|
1193 | return this;
|
1194 | }
|
1195 |
|
1196 | /**
|
1197 | * adds a single field->dynamic value function to the global Builder.
|
1198 | * @param {string} name name of field to add.
|
1199 | * @param {function(): any} fn function that will be called to generate the value whenever an event is created.
|
1200 | * @returns {Libhoney} this libhoney instance.
|
1201 | * @example
|
1202 | * honey.addDynamicField("process_heapUsed", () => process.memoryUsage().heapUsed);
|
1203 | */
|
1204 | addDynamicField(name, fn) {
|
1205 | this._builder.addDynamicField(name, fn);
|
1206 | return this;
|
1207 | }
|
1208 |
|
1209 | /**
|
1210 | * creates and sends an event, including all global builder fields/dynFields, as well as anything in the optional data parameter.
|
1211 | * @param {Object|Map<string, any>} data field->value mapping.
|
1212 | * @example <caption>using an object</caption>
|
1213 | * honey.sendNow ({
|
1214 | * responseTime_ms: 100,
|
1215 | * httpStatusCode: 200
|
1216 | * });
|
1217 | * @example <caption>using an ES2015 map</caption>
|
1218 | * let map = new Map();
|
1219 | * map.set("responseTime_ms", 100);
|
1220 | * map.set("httpStatusCode", 200);
|
1221 | * honey.sendNow (map);
|
1222 | */
|
1223 | sendNow(data) {
|
1224 | return this._builder.sendNow(data);
|
1225 | }
|
1226 |
|
1227 | /**
|
1228 | * creates and returns a new Event containing all fields/dynFields from the global Builder, that can be further fleshed out and sent on its own.
|
1229 | * @returns {Event} an Event instance
|
1230 | * @example <caption>adding data at send-time</caption>
|
1231 | * let ev = honey.newEvent();
|
1232 | * ev.addField("additionalField", value);
|
1233 | * ev.send();
|
1234 | */
|
1235 | newEvent() {
|
1236 | return this._builder.newEvent();
|
1237 | }
|
1238 |
|
1239 | /**
|
1240 | * creates and returns a clone of the global Builder, merged with fields and dynFields passed as arguments.
|
1241 | * @param {Object|Map<string, any>} fields a field->value mapping to merge into the new builder.
|
1242 | * @param {Object|Map<string, any>} dynFields a field->dynamic function mapping to merge into the new builder.
|
1243 | * @returns {Builder} a Builder instance
|
1244 | * @example <caption>no additional fields/dyn_field</caption>
|
1245 | * let builder = honey.newBuilder();
|
1246 | * @example <caption>additional fields/dyn_field</caption>
|
1247 | * let builder = honey.newBuilder({ requestId },
|
1248 | * {
|
1249 | * process_heapUsed: () => process.memoryUsage().heapUsed
|
1250 | * });
|
1251 | */
|
1252 | newBuilder(fields, dynFields) {
|
1253 | return this._builder.newBuilder(fields, dynFields);
|
1254 | }
|
1255 |
|
1256 | /**
|
1257 | * Allows you to easily wait for everything to be sent to Honeycomb (and for responses to come back for
|
1258 | * events). Also initializes a transmission instance for libhoney to use, so any events sent
|
1259 | * after a call to flush will not be waited on.
|
1260 | * @returns {Promise} a promise that will resolve when all currently enqueued events/batches are sent.
|
1261 | */
|
1262 | flush() {
|
1263 | const transmission = this._transmission;
|
1264 |
|
1265 | this._transmission = getAndInitTransmission(
|
1266 | this._options.transmission,
|
1267 | this._options
|
1268 | );
|
1269 |
|
1270 | return transmission.flush();
|
1271 | }
|
1272 | }
|
1273 |
|
1274 | const getTransmissionClass = transmissionClassName => {
|
1275 | switch (transmissionClassName) {
|
1276 | case "base":
|
1277 | return Transmission;
|
1278 | case "mock":
|
1279 | return MockTransmission;
|
1280 | case "null":
|
1281 | return NullTransmission;
|
1282 | case "worker":
|
1283 | console.warn(
|
1284 | "worker implementation not ready yet. using base implementation"
|
1285 | );
|
1286 | return Transmission;
|
1287 | case "writer":
|
1288 | return WriterTransmission;
|
1289 | default:
|
1290 | throw new Error(
|
1291 | `unknown transmission implementation "${transmissionClassName}".`
|
1292 | );
|
1293 | }
|
1294 | };
|
1295 |
|
1296 | function getAndInitTransmission(transmission, options) {
|
1297 | if (options.disabled) {
|
1298 | return null;
|
1299 | }
|
1300 |
|
1301 | if (typeof transmission === "string") {
|
1302 | const transmissionClass = getTransmissionClass(transmission);
|
1303 | return new transmissionClass(options);
|
1304 | } else if (typeof transmission !== "function") {
|
1305 | throw new Error(
|
1306 | ".transmission must be one of 'base'/'worker'/'mock'/'writer'/'null' or a constructor."
|
1307 | );
|
1308 | }
|
1309 |
|
1310 | try {
|
1311 | return new transmission(options);
|
1312 | } catch (initialisationError) {
|
1313 | if (transmission === Transmission) {
|
1314 | throw new Error(
|
1315 | "unable to initialize base transmission implementation.",
|
1316 | initialisationError
|
1317 | );
|
1318 | }
|
1319 |
|
1320 | console.warn(
|
1321 | "failed to initialize transmission, falling back to base implementation."
|
1322 | );
|
1323 | try {
|
1324 | return new Transmission(options);
|
1325 | } catch (fallbackInitialisationError) {
|
1326 | throw new Error(
|
1327 | "unable to initialize base transmission implementation.",
|
1328 | fallbackInitialisationError
|
1329 | );
|
1330 | }
|
1331 | }
|
1332 | }
|
1333 |
|
1334 | export default Libhoney;
|