Send Node.js instrumentation to Honeycomb

package.json

{ ...
  "dependencies": {
    "@grpc/grpc-js": "^1.5.7",
    "@opentelemetry/api": "^1.1.0",
    "@opentelemetry/core": "^1.1.1",
    "@opentelemetry/exporter-trace-otlp-grpc": "^0.27.0",
    "@opentelemetry/instrumentation": "^0.27.0",
    "@opentelemetry/instrumentation-express": "^0.28.0",
    "@opentelemetry/instrumentation-http": "^0.27.0",
    "@opentelemetry/resources": "^1.1.1",
    "@opentelemetry/sdk-trace-base": "^1.1.1",
    "@opentelemetry/sdk-trace-node": "^1.1.1",
    "@opentelemetry/semantic-conventions": "^1.1.0"
  },
}

tracing.js

const { DiagConsoleLogger, DiagLogLevel, diag } = require("@opentelemetry/api");
//diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.DEBUG);

// import otel dependencies
const opentelemetry = require("@opentelemetry/api");
const { ConsoleLogger } = require("@opentelemetry/core");
const { NodeTracerProvider } = require("@opentelemetry/sdk-trace-node");
const {
  SimpleSpanProcessor,
  ConsoleSpanExporter,
  BatchSpanProcessor
} = require("@opentelemetry/sdk-trace-base");
const { HttpInstrumentation } = require("@opentelemetry/instrumentation-http");
const {
  ExpressInstrumentation
} = require("@opentelemetry/instrumentation-express");
const { OTLPTraceExporter } = require('@opentelemetry/exporter-trace-otlp-grpc');
const { registerInstrumentations } = require("@opentelemetry/instrumentation");
const grpc = require("@grpc/grpc-js");
const { Resource } = require('@opentelemetry/resources');
const { SemanticResourceAttributes } = require('@opentelemetry/semantic-conventions');

  // set log level to DEBUG for a lot of output
  opentelemetry.diag.setLogger(new opentelemetry.DiagConsoleLogger(), opentelemetry.DiagLogLevel.INFO);
  
  const apikey = process.env.HONEYCOMB_API_KEY;
  const serviceName = process.env.SERVICE_NAME || 'sequence-of-numbers';
  console.log(`Exporting to Honeycomb with APIKEY <${apikey}> and service name ${serviceName}`)
  
  const provider = new NodeTracerProvider({
    resource: new Resource({
      [SemanticResourceAttributes.SERVICE_NAME]: serviceName
    }),
  });
  const metadata = new grpc.Metadata();
  metadata.set("x-honeycomb-team", apikey);
  const creds = grpc.credentials.createSsl();
  provider.addSpanProcessor(
    new BatchSpanProcessor(
      new OTLPTraceExporter({
        url: "grpc://api.honeycomb.io:443/",
        credentials: creds,
        metadata
      }), { scheduledDelayMillis: 500, maxQueueSize: 16000, maxExportBatchSize: 1000 }
    )
  );

  // uncomment this to see traces in stdout
  //provider.addSpanProcessor(new BatchSpanProcessor(new ConsoleSpanExporter()));

  provider.register();

  // turn on autoinstrumentation for traces you're likely to want
  registerInstrumentations({
    tracerProvider: provider,
    instrumentations: [new HttpInstrumentation(), new ExpressInstrumentation()]
  });

  process.on("SIGINT", async () => {
    console.log("Flushing telemetry");
    await provider.activeSpanProcessor.forceFlush();
    console.log("Flushed");
    process.exit();
  });

Install the dependencies; create your tracing.js file; define HONEYCOMB_API_KEY and SERVICE_NAME; and then add -r ./tracing.js to the node command that starts your app.