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denoland-deno/tests/specs/cli/otel_basic/basic.ts

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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { trace } from "npm:@opentelemetry/api@1.9.0";
import "jsr:@deno/otel@0.0.2/register";
const tracer = trace.getTracer("example-tracer");
async function inner() {
await tracer.startActiveSpan("inner span", async (span) => {
console.log("log 1");
await 1;
console.log("log 2");
span.end();
});
}
const server = Deno.serve({
port: 0,
async onListen({ port }) {
try {
await fetch(`http://localhost:${port}`);
} finally {
server.shutdown();
}
},
handler: async (_req) => {
return await tracer.startActiveSpan("outer span", async (span) => {
await inner();
const resp = new Response(null, { status: 200 });
span.end();
return resp;
});
},
});