create-a-tracer.js

'user strict';

// OTel JS - API
const { trace } = require('@opentelemetry/api');

// OTel JS - Core
const { NodeTracerProvider } = require('@opentelemetry/sdk-trace-node');
const { SimpleSpanProcessor } = require("@opentelemetry/sdk-trace-base");

// OTel JS - Core - Exporters
const { OTLPTraceExporter } = require('@opentelemetry/exporter-trace-otlp-grpc');

// OTel JS - Core - Instrumentations
const { HttpInstrumentation } = require('@opentelemetry/instrumentation-http');
const { MySQLInstrumentation } = require('@opentelemetry/instrumentation-mysql');
const { AwsInstrumentation } = require('@opentelemetry/instrumentation-aws-sdk');
const { ExpressInstrumentation } = require('@opentelemetry/instrumentation-express');
const { Resource } = require('@opentelemetry/resources');
const { SemanticResourceAttributes } = require('@opentelemetry/semantic-conventions');

// OTel JS - Contrib - AWS X-Ray
const { AWSXRayIdGenerator } = require('@opentelemetry/id-generator-aws-xray');
const { AWSXRayPropagator } = require('@opentelemetry/propagator-aws-xray');

// Debug Logging
const { DiagConsoleLogger, DiagLogLevel, diag } = require('@opentelemetry/api');
diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.INFO);

// create a provider using the AWS ID Generator
const tracerConfig = {
  idGenerator: new AWSXRayIdGenerator(),
  // any instrumentations can be declared here
  instrumentations: [
    new HttpInstrumentation(),
    new MySQLInstrumentation(),
    new ExpressInstrumentation(),
    new AwsInstrumentation({
      suppressInternalInstrumentation: true
    }),
  ],
  // any resources can be declared here
  resource: Resource.default().merge(new Resource({
      [SemanticResourceAttributes.SERVICE_NAME]: 'apprunner-hotel-demo'
  }))
};

const tracerProvider = new NodeTracerProvider(tracerConfig);

// add OTLP exporter
const otlpExporter = new OTLPTraceExporter();
tracerProvider.addSpanProcessor(new SimpleSpanProcessor(otlpExporter));

// Register the tracer provider with an X-Ray propagator
tracerProvider.register({
  propagator: new AWSXRayPropagator()
});