Current File : //usr/lib/node_modules/pm2/node_modules/@opencensus/core/build/src/stats/bucket-boundaries.js
"use strict";
/**
* Copyright 2018, OpenCensus Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
const defaultLogger = require("../common/console-logger");
class BucketBoundaries {
constructor(boundaries, logger = defaultLogger) {
this.logger = logger.logger();
this.buckets = this.dropNegativeBucketBounds(boundaries);
this.bucketCounts = this.getBucketCounts(this.buckets);
}
/**
* Gets bucket boundaries
*/
getBoundaries() {
return this.buckets;
}
/**
* Gets initial bucket counts
*/
getCounts() {
return this.bucketCounts;
}
/**
* Drops negative (BucketBounds) are currently not supported by
* any of the backends that OC supports
* @param bucketBoundaries a list with the bucket boundaries
*/
dropNegativeBucketBounds(bucketBoundaries) {
let negative = 0;
if (!bucketBoundaries)
return [];
const result = bucketBoundaries.reduce((accumulator, boundary, index) => {
if (boundary > 0) {
const nextBoundary = bucketBoundaries[index + 1];
this.validateBoundary(boundary, nextBoundary);
accumulator.push(boundary);
}
else {
negative++;
}
return accumulator;
}, []);
if (negative) {
this.logger.warn(`Dropping ${negative} negative bucket boundaries, the values must be strictly > 0.`);
}
return result;
}
/**
* Gets initial list of bucket counters
* @param buckets Bucket boundaries
*/
getBucketCounts(buckets) {
if (!buckets)
return [];
const bucketsCount = new Array(buckets.length + 1);
bucketsCount.fill(0);
return bucketsCount;
}
/**
* Checks boundaries order and duplicates
* @param current Boundary
* @param next Next boundary
*/
validateBoundary(current, next) {
if (next) {
if (current > next) {
this.logger.error('Bucket boundaries not sorted.');
}
if (current === next) {
this.logger.error('Bucket boundaries not unique.');
}
}
}
}
exports.BucketBoundaries = BucketBoundaries;
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