go.opentelemetry.io/auto/sdk v1.1.0: TracerProvider

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:golang/go.opentelemetry.io/auto/sdk@v1.1.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/go.opentelemetry.io/auto/sdk@v1.1.0
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: cjs
  - packageManager: npm@10.9.8
  - runtime: node@22.23.2

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:89efb1ead2491481d5ecb8841d97d8c0617db351d06806162798fe0198f394cc","contract":["sdk.TracerProvider() returns a non-nil trace.TracerProvider","TracerProvider.Tracer() creates a trace.Tracer capable of starting and ending spans","Span records attributes, events, and status without panic","Span.End() marks the span as finished"],"goal":"verify pkg:golang/go.opentelemetry.io/auto/sdk@v1.1.0","kind":"HOW","packages":["pkg:golang/go.opentelemetry.io/auto/sdk@v1.1.0"],"schemaVersion":1,"symbols":["TracerProvider"]},"contractCommand":["go","test","./..."],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","language":"go","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","packageManagerVersion":"1.26.6","runtime":"go","runtimeVersion":"1.26.6","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/go.opentelemetry.io/auto/sdk@v1.1.0"],"schemaVersion":1,"subject":"pkg:golang/go.opentelemetry.io/auto/sdk@v1.1.0","symbols":["TracerProvider"],"verifierAdapter":"golang@1"}

module example.com/otelautosample

go 1.26.6

require (
	go.opentelemetry.io/auto/sdk v1.1.0
	go.opentelemetry.io/otel v1.32.0
	go.opentelemetry.io/otel/trace v1.32.0
)

github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
go.opentelemetry.io/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
go.opentelemetry.io/auto/sdk v1.1.0/go.mod h1:3wSPjt5PWp2RhlCcmmOial7AvC4DQqZb7a7wCow3W8A=
go.opentelemetry.io/otel v1.32.0 h1:WnBN+Xjcteh0zdk01SVqV55d/m62NJLJdIyb4y/WO5U=
go.opentelemetry.io/otel v1.32.0/go.mod h1:00DCVSB0RQcnzlwyTfqtxSm+DRr9hpYrHjNGiBHVQIg=
go.opentelemetry.io/otel/trace v1.32.0 h1:WIC9mYrXf8TmY/EXuULKc8hR17vE+Hjv2cssQDe03fM=
go.opentelemetry.io/otel/trace v1.32.0/go.mod h1:+i4rkvCraA+tG6AzwloGaCtkx53Fa+L+V8e9a7YvhT8=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

package main

import (
	"context"
	"fmt"

	"go.opentelemetry.io/auto/sdk"
	"go.opentelemetry.io/otel/trace"
)

func RunTracing(ctx context.Context) (trace.SpanContext, error) {
	tp := sdk.TracerProvider()
	if tp == nil {
		return trace.SpanContext{}, fmt.Errorf("tracer provider is nil")
	}

	tracer := tp.Tracer("example.com/otelautosample", trace.WithInstrumentationVersion("1.1.0"))
	ctx, span := tracer.Start(ctx, "sample-operation")
	defer span.End()

	span.AddEvent("executing work")
	return span.SpanContext(), nil
}

func main() {
	sc, err := RunTracing(context.Background())
	if err != nil {
		panic(err)
	}
	fmt.Printf("TracerProvider span executed, valid context: %t\n", sc.IsValid())
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:golang/go.opentelemetry.io/auto/sdk@v1.1.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/go.opentelemetry.io/auto/sdk@v1.1.0"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}

package test

import (
	"context"
	"testing"

	"go.opentelemetry.io/auto/sdk"
	"go.opentelemetry.io/otel/attribute"
	"go.opentelemetry.io/otel/codes"
	"go.opentelemetry.io/otel/trace"
)

func TestContractTracerProvider(t *testing.T) {
	tp := sdk.TracerProvider()
	if tp == nil {
		t.Fatal("expected non-nil TracerProvider from sdk.TracerProvider()")
	}

	tracer := tp.Tracer("example.com/otelautosample", trace.WithInstrumentationVersion("1.1.0"))
	if tracer == nil {
		t.Fatal("expected non-nil Tracer from TracerProvider.Tracer()")
	}

	ctx := context.Background()
	ctxWithSpan, span := tracer.Start(ctx, "contract-span")
	if span == nil {
		t.Fatal("expected non-nil Span from tracer.Start()")
	}
	if ctxWithSpan == nil {
		t.Fatal("expected non-nil Context from tracer.Start()")
	}

	if !span.IsRecording() {
		t.Fatal("expected span to be recording initially")
	}

	span.SetAttributes(attribute.String("test.key", "test.value"), attribute.Int("test.count", 42))
	span.SetStatus(codes.Ok, "success")
	span.AddEvent("contract-event", trace.WithAttributes(attribute.Bool("event.attr", true)))
	span.SetName("renamed-contract-span")

	spanContext := span.SpanContext()
	_ = spanContext

	span.End()

	if span.IsRecording() {
		t.Fatal("expected span to no longer be recording after End()")
	}
}