88 lines
2.7 KiB
JavaScript
88 lines
2.7 KiB
JavaScript
/*
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* Copyright The OpenTelemetry Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import { isSpanContextValid, trace, } from '@opentelemetry/api';
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class ExemplarBucket {
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constructor() {
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this.value = 0;
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this.attributes = {};
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this.timestamp = [0, 0];
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this._offered = false;
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}
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offer(value, timestamp, attributes, ctx) {
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this.value = value;
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this.timestamp = timestamp;
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this.attributes = attributes;
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const spanContext = trace.getSpanContext(ctx);
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if (spanContext && isSpanContextValid(spanContext)) {
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this.spanId = spanContext.spanId;
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this.traceId = spanContext.traceId;
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}
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this._offered = true;
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}
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collect(pointAttributes) {
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if (!this._offered)
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return null;
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const currentAttributes = this.attributes;
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// filter attributes
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Object.keys(pointAttributes).forEach(key => {
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if (pointAttributes[key] === currentAttributes[key]) {
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delete currentAttributes[key];
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}
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});
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const retVal = {
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filteredAttributes: currentAttributes,
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value: this.value,
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timestamp: this.timestamp,
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spanId: this.spanId,
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traceId: this.traceId,
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};
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this.attributes = {};
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this.value = 0;
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this.timestamp = [0, 0];
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this.spanId = undefined;
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this.traceId = undefined;
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this._offered = false;
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return retVal;
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}
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}
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export class FixedSizeExemplarReservoirBase {
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constructor(size) {
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this._size = size;
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this._reservoirStorage = new Array(size);
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for (let i = 0; i < this._size; i++) {
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this._reservoirStorage[i] = new ExemplarBucket();
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}
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}
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maxSize() {
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return this._size;
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}
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/**
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* Resets the reservoir
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*/
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reset() { }
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collect(pointAttributes) {
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const exemplars = [];
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this._reservoirStorage.forEach(storageItem => {
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const res = storageItem.collect(pointAttributes);
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if (res !== null) {
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exemplars.push(res);
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}
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});
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this.reset();
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return exemplars;
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}
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}
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//# sourceMappingURL=ExemplarReservoir.js.map
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