| 1 | ;
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| 2 | /**
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| 3 | * Copyright 2018, OpenCensus Authors
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| 4 | *
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| 5 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 6 | * you may not use this file except in compliance with the License.
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| 7 | * You may obtain a copy of the License at
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| 8 | *
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0
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| 10 | *
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| 11 | * Unless required by applicable law or agreed to in writing, software
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 14 | * See the License for the specific language governing permissions and
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| 15 | * limitations under the License.
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| 16 | */
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| 17 | Object.defineProperty(exports, "__esModule", { value: true });
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| 18 | exports.BucketBoundaries = void 0;
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| 19 | const defaultLogger = require("../common/console-logger");
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| 20 | class BucketBoundaries {
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| 21 | constructor(boundaries, logger = defaultLogger) {
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| 22 | this.logger = logger.logger();
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| 23 | this.buckets = this.dropNegativeBucketBounds(boundaries);
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| 24 | this.bucketCounts = this.getBucketCounts(this.buckets);
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| 25 | }
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| 26 | /**
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| 27 | * Gets bucket boundaries
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| 28 | */
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| 29 | getBoundaries() {
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| 30 | return this.buckets;
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| 31 | }
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| 32 | /**
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| 33 | * Gets initial bucket counts
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| 34 | */
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| 35 | getCounts() {
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| 36 | return this.bucketCounts;
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| 37 | }
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| 38 | /**
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| 39 | * Drops negative (BucketBounds) are currently not supported by
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| 40 | * any of the backends that OC supports
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| 41 | * @param bucketBoundaries a list with the bucket boundaries
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| 42 | */
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| 43 | dropNegativeBucketBounds(bucketBoundaries) {
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| 44 | let negative = 0;
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| 45 | if (!bucketBoundaries)
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| 46 | return [];
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| 47 | const result = bucketBoundaries.reduce((accumulator, boundary, index) => {
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| 48 | if (boundary > 0) {
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| 49 | const nextBoundary = bucketBoundaries[index + 1];
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| 50 | this.validateBoundary(boundary, nextBoundary);
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| 51 | accumulator.push(boundary);
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| 52 | }
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| 53 | else {
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| 54 | negative++;
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| 55 | }
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| 56 | return accumulator;
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| 57 | }, []);
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| 58 | if (negative) {
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| 59 | this.logger.warn(`Dropping ${negative} negative bucket boundaries, the values must be strictly > 0.`);
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| 60 | }
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| 61 | return result;
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| 62 | }
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| 63 | /**
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| 64 | * Gets initial list of bucket counters
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| 65 | * @param buckets Bucket boundaries
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| 66 | */
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| 67 | getBucketCounts(buckets) {
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| 68 | if (!buckets)
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| 69 | return [];
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| 70 | const bucketsCount = new Array(buckets.length + 1);
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| 71 | bucketsCount.fill(0);
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| 72 | return bucketsCount;
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| 73 | }
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| 74 | /**
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| 75 | * Checks boundaries order and duplicates
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| 76 | * @param current Boundary
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| 77 | * @param next Next boundary
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| 78 | */
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| 79 | validateBoundary(current, next) {
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| 80 | if (next) {
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| 81 | if (current > next) {
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| 82 | this.logger.error('Bucket boundaries not sorted.');
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| 83 | }
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| 84 | if (current === next) {
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| 85 | this.logger.error('Bucket boundaries not unique.');
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| 86 | }
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| 87 | }
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| 88 | }
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| 89 | }
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| 90 | exports.BucketBoundaries = BucketBoundaries;
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| 91 | //# sourceMappingURL=bucket-boundaries.js.map |
| \ | No newline at end of file |