go.opentelemetry.io/otel/metric v1.37.0: WithSchemaURL

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/metric.WithSchemaURL in pkg:golang/go.opentelemetry.io/otel/metric@v1.37.0
Kind: HOW

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

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:sha256:047db12457fcc96250d4da68625cb769cbf9f4c5e0af58c139e2c533a2700059","contract":["WithSchemaURL configures the SchemaURL on a MeterConfig","WithSchemaURL resolves sequential overrides when configured multiple times","WithSchemaURL accepts empty string to reset or clear SchemaURL","WithSchemaURL combines with other MeterOptions without interference","WithSchemaURL is accepted as a valid MeterOption by MeterProvider"],"goal":"verify go.opentelemetry.io/otel/metric.WithSchemaURL in pkg:golang/go.opentelemetry.io/otel/metric@v1.37.0","kind":"HOW","packages":["pkg:golang/go.opentelemetry.io/otel/metric@v1.37.0"],"schemaVersion":1,"symbols":["go.opentelemetry.io/otel/metric.WithSchemaURL"]},"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/metric@v1.37.0"],"schemaVersion":1,"subject":"pkg:golang/go.opentelemetry.io/otel/metric@v1.37.0","symbols":["go.opentelemetry.io/otel/metric.WithSchemaURL"],"verifierAdapter":"golang@1"}

module example.com/schemaurl

go 1.23.0

require go.opentelemetry.io/otel/metric v1.37.0

require go.opentelemetry.io/otel v1.37.0 // indirect

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/go-logr/logr v1.4.3 h1:CjnDlHq8ikf6E492q6eKboGOC0T8CDaOvkHCIg8idEI=
github.com/go-logr/logr v1.4.3/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
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/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
go.opentelemetry.io/auto/sdk v1.1.0/go.mod h1:3wSPjt5PWp2RhlCcmmOial7AvC4DQqZb7a7wCow3W8A=
go.opentelemetry.io/otel v1.37.0 h1:9zhNfelUvx0KBfu/gb+ZgeAfAgtWrfHJZcAqFC228wQ=
go.opentelemetry.io/otel v1.37.0/go.mod h1:ehE/umFRLnuLa/vSccNq9oS1ErUlkkK71gMcN34UG8I=
go.opentelemetry.io/otel/metric v1.37.0 h1:mvwbQS5m0tbmqML4NqK+e3aDiO02vsf/WgbsdpcPoZE=
go.opentelemetry.io/otel/metric v1.37.0/go.mod h1:04wGrZurHYKOc+RKeye86GwKiTb9FKm1WHtO+4EVr2E=
go.opentelemetry.io/otel/trace v1.37.0 h1:HLdcFNbRQBE2imdSEgm/kwqmQj1Or1l/7bW6mxVK7z4=
go.opentelemetry.io/otel/trace v1.37.0/go.mod h1:TlgrlQ+PtQO5XFerSPUYG0JSgGyryXewPGyayAWSBS0=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

package schemaurl

import (
	"go.opentelemetry.io/otel/metric"
)

// WithConfiguredSchemaURL returns a MeterOption configuring the given schema URL.
func WithConfiguredSchemaURL(schemaURL string) metric.MeterOption {
	return metric.WithSchemaURL(schemaURL)
}

// NewConfigWithSchemaURL creates a MeterConfig with the given schema URL applied.
func NewConfigWithSchemaURL(schemaURL string) metric.MeterConfig {
	return metric.NewMeterConfig(metric.WithSchemaURL(schemaURL))
}

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

package main

import (
	"fmt"
	"os"

	schemaurl "example.com/schemaurl"
	"go.opentelemetry.io/otel/metric"
	"go.opentelemetry.io/otel/metric/noop"
)

func main() {
	// Assertion 1: WithSchemaURL configures the SchemaURL on a MeterConfig
	opt := metric.WithSchemaURL("https://example.com/schemas/1.24.0")
	cfg := metric.NewMeterConfig(opt)
	if got := cfg.SchemaURL(); got != "https://example.com/schemas/1.24.0" {
		fmt.Fprintf(os.Stderr, "FAIL: SchemaURL mismatch: got %q, want %q\n", got, "https://example.com/schemas/1.24.0")
		os.Exit(1)
	}

	// Assertion 2: WithSchemaURL resolves sequential overrides when configured multiple times
	cfgOverride := metric.NewMeterConfig(
		metric.WithSchemaURL("https://example.com/v1"),
		metric.WithSchemaURL("https://example.com/v2"),
	)
	if got := cfgOverride.SchemaURL(); got != "https://example.com/v2" {
		fmt.Fprintf(os.Stderr, "FAIL: SchemaURL override mismatch: got %q, want %q\n", got, "https://example.com/v2")
		os.Exit(1)
	}

	// Assertion 3: WithSchemaURL accepts empty string to reset or clear SchemaURL
	cfgReset := metric.NewMeterConfig(
		metric.WithSchemaURL("https://example.com/v1"),
		metric.WithSchemaURL(""),
	)
	if got := cfgReset.SchemaURL(); got != "" {
		fmt.Fprintf(os.Stderr, "FAIL: SchemaURL empty reset mismatch: got %q, want \"\"\n", got)
		os.Exit(1)
	}

	// Assertion 4: WithSchemaURL combines with other MeterOptions without interference
	cfgCombined := metric.NewMeterConfig(
		metric.WithInstrumentationVersion("2.1.0"),
		schemaurl.WithConfiguredSchemaURL("https://example.com/schemas/v2.1"),
	)
	if got := cfgCombined.SchemaURL(); got != "https://example.com/schemas/v2.1" {
		fmt.Fprintf(os.Stderr, "FAIL: combined SchemaURL mismatch: got %q, want %q\n", got, "https://example.com/schemas/v2.1")
		os.Exit(1)
	}
	if got := cfgCombined.InstrumentationVersion(); got != "2.1.0" {
		fmt.Fprintf(os.Stderr, "FAIL: combined InstrumentationVersion mismatch: got %q, want %q\n", got, "2.1.0")
		os.Exit(1)
	}

	// Assertion 5: WithSchemaURL is accepted as a valid MeterOption by MeterProvider
	mp := noop.NewMeterProvider()
	meter := mp.Meter("contract-meter", metric.WithSchemaURL("https://example.com/schemas/v1"))
	if meter == nil {
		fmt.Fprintf(os.Stderr, "FAIL: MeterProvider.Meter returned nil\n")
		os.Exit(1)
	}

	fmt.Println("PASS: WithSchemaURL contract passed")
}