enhanced-adot-node-autoinstrumentation/build/src/aws-span-metrics-processor-builder.js

This package provides Amazon Web Services distribution of the OpenTelemetry Node Instrumentation, which allows for auto-instrumentation of NodeJS applications.

"use strict";
// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
Object.defineProperty(exports, "__esModule", { value: true });
exports.AwsSpanMetricsProcessorBuilder = void 0;
const aws_metric_attribute_generator_1 = require("./aws-metric-attribute-generator");
const aws_span_metrics_processor_1 = require("./aws-span-metrics-processor");
// Metric instrument configuration constants
const ERROR = 'Error';
const FAULT = 'Fault';
const LATENCY = 'Latency';
const LATENCY_UNITS = 'Milliseconds';
/** A builder for {@link AwsSpanMetricsProcessor} */
class AwsSpanMetricsProcessorBuilder {
    constructor(meterProvider, resource, meterProviderForceFlusher) {
        // Optional builder elements
        this.generator = AwsSpanMetricsProcessorBuilder.DEFAULT_GENERATOR;
        this.scopeName = AwsSpanMetricsProcessorBuilder.DEFAULT_SCOPE_NAME;
        this.meterProvider = meterProvider;
        this.resource = resource;
        this.forceFlushFunction = meterProviderForceFlusher;
    }
    static create(meterProvider, resource, meterProviderForceFlusher) {
        return new AwsSpanMetricsProcessorBuilder(meterProvider, resource, meterProviderForceFlusher);
    }
    /**
     * Sets the generator used to generate attributes used in metrics produced by span metrics
     * processor. If unset, defaults to {@link DEFAULT_GENERATOR}. Must not be null.
     */
    setGenerator(generator) {
        if (generator == null) {
            throw new Error('generator must not be null/undefined');
        }
        this.generator = generator;
        return this;
    }
    /**
     * Sets the scope name used in the creation of metrics by the span metrics processor. If unset,
     * defaults to {@link DEFAULT_SCOPE_NAME}. Must not be null.
     */
    setScopeName(scopeName) {
        this.scopeName = scopeName;
        return this;
    }
    build() {
        const meter = this.meterProvider.getMeter(this.scopeName);
        const errorHistogram = meter.createHistogram(ERROR);
        const faultHistogram = meter.createHistogram(FAULT);
        const metricOptions = {
            unit: LATENCY_UNITS,
        };
        const latencyHistogram = meter.createHistogram(LATENCY, metricOptions);
        return aws_span_metrics_processor_1.AwsSpanMetricsProcessor.create(errorHistogram, faultHistogram, latencyHistogram, this.generator, this.resource, this.forceFlushFunction);
    }
}
exports.AwsSpanMetricsProcessorBuilder = AwsSpanMetricsProcessorBuilder;
// Defaults
AwsSpanMetricsProcessorBuilder.DEFAULT_GENERATOR = new aws_metric_attribute_generator_1.AwsMetricAttributeGenerator();
AwsSpanMetricsProcessorBuilder.DEFAULT_SCOPE_NAME = 'AwsSpanMetricsProcessor';
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