tracing.js

'use strict';

const opentelemetry = require('@opentelemetry/api');
const { Resource } = require('@opentelemetry/resources');
const { SemanticResourceAttributes } = require('@opentelemetry/semantic-conventions');
const { BasicTracerProvider, BatchSpanProcessor } = require('@opentelemetry/sdk-trace-base');
const { JaegerExporter } = require('@opentelemetry/exporter-jaeger');

module.exports = (serviceName) => {
    const provider = new BasicTracerProvider({
        resource: new Resource({
            [SemanticResourceAttributes.SERVICE_NAME]: serviceName,
        })
    });

    let exporter;
    exporter = new JaegerExporter({ endpoint: "http://127.0.0.1:14268/api/traces" });

    provider.addSpanProcessor(new BatchSpanProcessor(exporter));

    // Initialize the OpenTelemetry APIs to use the NodeTracerProvider bindings
    provider.register();

    return opentelemetry.trace.getTracer('my-service-tracer');
};