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 go.opentelemetry.io/auto/sdk.TracerProvider in 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
Demonstrate these symbols/APIs:
  - go.opentelemetry.io/auto/sdk.TracerProvider
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: esm
  - 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:sha256:4c0ae1722cfbfb7df2b9c97ed28b4e16c4c2761bb60f1ebb2e56ac676c319d27","contract":["sdk.TracerProvider returns a non-nil trace.TracerProvider","TracerProvider.Tracer creates a non-nil trace.Tracer","Tracer.Start creates a new span and non-nil context","Span created by Tracer is recording","Span methods operate safely without panic","Span End executes safely without panic"],"goal":"verify go.opentelemetry.io/auto/sdk.TracerProvider in 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":["go.opentelemetry.io/auto/sdk.TracerProvider"]},"contractCommand":["go","run","./test"],"environment":{"arch":"x64","ecosystem":"golang","os":"linux","osVersionBucket":"24","packageManager":"go","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":["go.opentelemetry.io/auto/sdk.TracerProvider"],"verifierAdapter":"golang@1"}

module sample

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"
)

// GetTracerProvider returns the auto-instrumentable TracerProvider.
func GetTracerProvider() trace.TracerProvider {
	return sdk.TracerProvider()
}

// CreateTracer creates a named tracer from the auto TracerProvider.
func CreateTracer(name string) trace.Tracer {
	return sdk.TracerProvider().Tracer(name)
}

// StartSpan creates a span using the auto tracer.
func StartSpan(ctx context.Context, tracerName, spanName string) (context.Context, trace.Span) {
	tracer := CreateTracer(tracerName)
	return tracer.Start(ctx, spanName)
}

func main() {
	tp := GetTracerProvider()
	fmt.Printf("TracerProvider: %T\n", tp)

	ctx := context.Background()
	_, span := StartSpan(ctx, "sample-tracer", "example-operation")
	defer span.End()

	fmt.Printf("SpanContext IsValid: %t\n", span.SpanContext().IsValid())
}

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

package main

import (
	"context"
	"errors"
	"fmt"
	"os"

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

func assertTrue(name string, condition bool) {
	if !condition {
		fmt.Fprintf(os.Stderr, "Assertion failed for %s: expected true, got false\n", name)
		os.Exit(1)
	}
}

func assertNotNil(name string, obj any) {
	if obj == nil {
		fmt.Fprintf(os.Stderr, "Assertion failed for %s: expected non-nil, got nil\n", name)
		os.Exit(1)
	}
}

func main() {
	// Contract: sdk.TracerProvider returns a non-nil trace.TracerProvider
	tp := sdk.TracerProvider()
	assertNotNil("sdk.TracerProvider is non-nil", tp)

	// Contract: TracerProvider.Tracer creates a non-nil trace.Tracer
	tracer := tp.Tracer("sample-tracer")
	assertNotNil("tp.Tracer returns non-nil Tracer", tracer)

	// Contract: Tracer.Start creates a new span and non-nil context
	ctx := context.Background()
	childCtx, span := tracer.Start(ctx, "contract-test-span")
	assertNotNil("childCtx is non-nil", childCtx)
	assertNotNil("span is non-nil", span)

	// Contract: Span created by Tracer is recording
	assertTrue("span is recording", span.IsRecording())

	// Contract: Span methods operate safely without panic
	span.SetAttributes(attribute.String("test.key", "test.value"))
	span.AddEvent("test-event")
	span.SetStatus(codes.Ok, "all good")
	span.RecordError(errors.New("test error"))
	_ = span.SpanContext()

	// Contract: Span End executes safely without panic
	span.End()

	fmt.Println("All contract assertions passed successfully.")
}