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:db29335ef56a30a8b50bbb9d6f0a5071e95ac305258aa09e717251a99511d7c9","contract":["attribute.BOOL is the Type constant representing boolean attribute values, with String() returning 'BOOL'.","attribute.BoolValue returns a Value with Type attribute.BOOL.","attribute.Bool and attribute.Key.Bool create KeyValues whose Value.Type() equals attribute.BOOL.","attribute.BOOL typed values return expected boolean states via AsBool and Emit.","Values created with non-boolean types do not have Type equal to attribute.BOOL."],"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 type identification
	v := attribute.BoolValue(true)
	if v.Type() == attribute.BOOL {
		fmt.Printf("Type is %s (%d)\n", attribute.BOOL.String(), attribute.BOOL)
	}

	kv := attribute.Bool("service.enabled", true)
	if kv.Value.Type() == attribute.BOOL {
		fmt.Printf("KeyValue %s has type %s with value: %t\n", kv.Key, kv.Value.Type(), kv.Value.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 is the Type constant representing boolean attribute values, with String() returning 'BOOL'.
	if attribute.BOOL.String() != "BOOL" {
		fmt.Fprintf(os.Stderr, "FAIL: expected attribute.BOOL.String() to be 'BOOL', got '%s'\n", attribute.BOOL.String())
		os.Exit(1)
	}
	if attribute.BOOL == attribute.INVALID {
		fmt.Fprintf(os.Stderr, "FAIL: attribute.BOOL must not equal attribute.INVALID\n")
		os.Exit(1)
	}

	// Assertion 2: attribute.BoolValue returns a Value with Type attribute.BOOL.
	valTrue := attribute.BoolValue(true)
	if valTrue.Type() != attribute.BOOL {
		fmt.Fprintf(os.Stderr, "FAIL: expected BoolValue(true).Type() == attribute.BOOL, got %v\n", valTrue.Type())
		os.Exit(1)
	}
	valFalse := attribute.BoolValue(false)
	if valFalse.Type() != attribute.BOOL {
		fmt.Fprintf(os.Stderr, "FAIL: expected BoolValue(false).Type() == attribute.BOOL, got %v\n", valFalse.Type())
		os.Exit(1)
	}

	// Assertion 3: attribute.Bool and attribute.Key.Bool create KeyValues whose Value.Type() equals attribute.BOOL.
	kv := attribute.Bool("config.active", true)
	if kv.Value.Type() != attribute.BOOL {
		fmt.Fprintf(os.Stderr, "FAIL: expected attribute.Bool KeyValue to have Type attribute.BOOL, got %v\n", kv.Value.Type())
		os.Exit(1)
	}

	key := attribute.Key("config.enabled")
	kvFromKey := key.Bool(false)
	if kvFromKey.Value.Type() != attribute.BOOL {
		fmt.Fprintf(os.Stderr, "FAIL: expected key.Bool KeyValue to have Type attribute.BOOL, got %v\n", kvFromKey.Value.Type())
		os.Exit(1)
	}

	// Assertion 4: attribute.BOOL typed values return expected boolean states via AsBool and Emit.
	if !valTrue.AsBool() {
		fmt.Fprintf(os.Stderr, "FAIL: expected AsBool() true, got false\n")
		os.Exit(1)
	}
	if emitted := valTrue.Emit(); emitted != "true" {
		fmt.Fprintf(os.Stderr, "FAIL: expected Emit() 'true', got '%s'\n", emitted)
		os.Exit(1)
	}
	if valFalse.AsBool() {
		fmt.Fprintf(os.Stderr, "FAIL: expected AsBool() false, got true\n")
		os.Exit(1)
	}
	if emitted := valFalse.Emit(); emitted != "false" {
		fmt.Fprintf(os.Stderr, "FAIL: expected Emit() 'false', got '%s'\n", emitted)
		os.Exit(1)
	}

	// Assertion 5: Values created with non-boolean types do not have Type equal to attribute.BOOL.
	strVal := attribute.StringValue("hello")
	if strVal.Type() == attribute.BOOL {
		fmt.Fprintf(os.Stderr, "FAIL: string value should not have attribute.BOOL type\n")
		os.Exit(1)
	}
	intVal := attribute.Int64Value(42)
	if intVal.Type() == attribute.BOOL {
		fmt.Fprintf(os.Stderr, "FAIL: int64 value should not have attribute.BOOL type\n")
		os.Exit(1)
	}

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