pinpoint-node-agent/lib/metric/active-trace-histogram.js

Pinpoint node agent provided by NAVER

/**
 * Pinpoint Node.js Agent
 * Copyright 2020-present NAVER Corp.
 * Apache License v2.0
 */

'use strict'

const HistogramSchema = require('./histogram-schema')

class ActiveTraceHistogram {
  constructor(schema) {
    this.schema = schema || HistogramSchema.NORMAL_SCHEMA
    this.typeCode = schema.typeCode
    this.fastCount = 0
    this.normalCount = 0
    this.slowCount = 0
    this.verySlowCount = 0
  }

  increase(elapsedTime) {
    if (!elapsedTime) {
      return
    }

    if (elapsedTime <= this.schema.fast) {
      this.fastCount++
    } else if (elapsedTime <= this.schema.normal) {
      this.normalCount++
    } else if (elapsedTime <= this.schema.slow) {
      this.slowCount++
    } else {
      this.verySlowCount++
    }
  }

  histogramValues() {
    return [
      this.fastCount,
      this.normalCount,
      this.slowCount,
      this.verySlowCount
    ]
  }
}

module.exports = ActiveTraceHistogram