go.opentelemetry.io/otel v1.37.0: attribute.Bool

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/otel/attribute.Bool in pkg:golang/go.opentelemetry.io/otel@v1.37.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/go.opentelemetry.io/otel@v1.37.0
Demonstrate these symbols/APIs:
  - go.opentelemetry.io/otel/attribute.Bool

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:dc4874007475fb0d98ed8ada090218a178ad81a1a32fdec016c489a97ec6c43f","contract":["attribute.Bool creates a KeyValue with BOOL type, valid key and boolean value.","attribute.Bool value can be retrieved using AsBool and Emit.","attribute.Key.Bool creates an equivalent KeyValue for the given key.","attribute.Bool KeyValues can be added to an attribute.Set, preserving key uniqueness and lookup.","attribute.Bool handles both true and false values correctly."],"goal":"verify go.opentelemetry.io/otel/attribute.Bool in pkg:golang/go.opentelemetry.io/otel@v1.37.0","kind":"HOW","packages":["pkg:golang/go.opentelemetry.io/otel@v1.37.0"],"schemaVersion":1,"symbols":["go.opentelemetry.io/otel/attribute.Bool"]},"contractCommand":["go","run","./test"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/go.opentelemetry.io/otel@v1.37.0"],"schemaVersion":1,"subject":"pkg:golang/go.opentelemetry.io/otel@v1.37.0","symbols":["go.opentelemetry.io/otel/attribute.Bool"],"verifierAdapter":"golang@1"}

module sample

go 1.26.6

require go.opentelemetry.io/otel v1.37.0

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 v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
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/otel v1.37.0 h1:9zhNfelUvx0KBfu/gb+ZgeAfAgtWrfHJZcAqFC228wQ=
go.opentelemetry.io/otel v1.37.0/go.mod h1:ehE/umFRLnuLa/vSccNq9oS1ErUlkkK71gMcN34UG8I=
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 (
	"fmt"

	"go.opentelemetry.io/otel/attribute"
)

func main() {
	// Demonstrate attribute.Bool construction
	kv := attribute.Bool("feature.enabled", true)
	fmt.Printf("Key: %s, Value: %t, Type: %s\n", kv.Key, kv.Value.AsBool(), kv.Value.Type())

	// Demonstrate attribute.Key.Bool
	key := attribute.Key("feature.debug")
	debugKV := key.Bool(false)
	fmt.Printf("Key: %s, Value: %t\n", debugKV.Key, debugKV.Value.AsBool())

	// Demonstrate attribute.Set integration
	set := attribute.NewSet(kv, debugKV)
	if val, ok := set.Value("feature.enabled"); ok {
		fmt.Printf("Set lookup 'feature.enabled': %t\n", val.AsBool())
	}
}

{
  "schemaVersion": 1,
  "goal": "verify go.opentelemetry.io/otel/attribute.Bool in pkg:golang/go.opentelemetry.io/otel@v1.37.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/go.opentelemetry.io/otel@v1.37.0"
  ],
  "symbols": [
    "go.opentelemetry.io/otel/attribute.Bool"
  ]
}

package main

import (
	"fmt"
	"os"

	"go.opentelemetry.io/otel/attribute"
)

func main() {
	// Assertion 1: attribute.Bool creates a KeyValue with BOOL type, valid key and boolean value.
	kvTrue := attribute.Bool("feature.enabled", true)
	if kvTrue.Key != attribute.Key("feature.enabled") {
		fmt.Fprintf(os.Stderr, "FAIL: expected key 'feature.enabled', got '%s'\n", kvTrue.Key)
		os.Exit(1)
	}
	if kvTrue.Value.Type() != attribute.BOOL {
		fmt.Fprintf(os.Stderr, "FAIL: expected BOOL type, got %v\n", kvTrue.Value.Type())
		os.Exit(1)
	}
	if !kvTrue.Valid() {
		fmt.Fprintf(os.Stderr, "FAIL: expected valid KeyValue\n")
		os.Exit(1)
	}
	if !kvTrue.Value.AsBool() {
		fmt.Fprintf(os.Stderr, "FAIL: expected AsBool true, got false\n")
		os.Exit(1)
	}

	// Assertion 2: attribute.Bool value can be retrieved using AsBool and Emit.
	if val := kvTrue.Value.AsBool(); !val {
		fmt.Fprintf(os.Stderr, "FAIL: expected AsBool true, got %v\n", val)
		os.Exit(1)
	}
	if emitted := kvTrue.Value.Emit(); emitted != "true" {
		fmt.Fprintf(os.Stderr, "FAIL: expected Emit 'true', got '%s'\n", emitted)
		os.Exit(1)
	}

	kvFalse := attribute.Bool("feature.disabled", false)
	if val := kvFalse.Value.AsBool(); val {
		fmt.Fprintf(os.Stderr, "FAIL: expected AsBool false, got %v\n", val)
		os.Exit(1)
	}
	if emitted := kvFalse.Value.Emit(); emitted != "false" {
		fmt.Fprintf(os.Stderr, "FAIL: expected Emit 'false', got '%s'\n", emitted)
		os.Exit(1)
	}

	// Assertion 3: attribute.Key.Bool creates an equivalent KeyValue for the given key.
	key := attribute.Key("feature.enabled")
	kvFromKey := key.Bool(true)
	if kvFromKey != kvTrue {
		fmt.Fprintf(os.Stderr, "FAIL: expected key.Bool to match attribute.Bool\n")
		os.Exit(1)
	}

	// Assertion 4: attribute.Bool KeyValues can be added to an attribute.Set, preserving key uniqueness and lookup.
	set := attribute.NewSet(
		attribute.Bool("flag.a", true),
		attribute.Bool("flag.b", false),
		attribute.Bool("flag.a", false), // duplicate key overwrite
	)
	if set.Len() != 2 {
		fmt.Fprintf(os.Stderr, "FAIL: expected set length 2, got %d\n", set.Len())
		os.Exit(1)
	}
	if val, ok := set.Value("flag.a"); !ok || val.AsBool() != false {
		fmt.Fprintf(os.Stderr, "FAIL: expected flag.a to be false, got %v (ok=%v)\n", val.AsBool(), ok)
		os.Exit(1)
	}
	if val, ok := set.Value("flag.b"); !ok || val.AsBool() != false {
		fmt.Fprintf(os.Stderr, "FAIL: expected flag.b to be false, got %v (ok=%v)\n", val.AsBool(), ok)
		os.Exit(1)
	}
	if _, ok := set.Value("nonexistent"); ok {
		fmt.Fprintf(os.Stderr, "FAIL: expected nonexistent key to return false\n")
		os.Exit(1)
	}

	// Assertion 5: attribute.Bool handles both true and false values correctly.
	t := attribute.Bool("test.true", true)
	f := attribute.Bool("test.false", false)
	if !t.Valid() || !f.Valid() {
		fmt.Fprintf(os.Stderr, "FAIL: expected both KeyValues to be valid\n")
		os.Exit(1)
	}
	if t.Value.AsBool() != true || f.Value.AsBool() != false {
		fmt.Fprintf(os.Stderr, "FAIL: expected true and false values, got %v and %v\n", t.Value.AsBool(), f.Value.AsBool())
		os.Exit(1)
	}

	fmt.Println("PASS: all attribute.Bool contract assertions passed.")
}