go.opentelemetry.io/otel/sdk/metric v1.39.0: WithResource

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/sdk/metric.WithResource in pkg:golang/go.opentelemetry.io/otel/sdk/metric@v1.39.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/go.opentelemetry.io/otel/sdk/metric@v1.39.0
Demonstrate these symbols/APIs:
  - go.opentelemetry.io/otel/sdk/metric.WithResource

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:c7a9a5d157db45220ecb9bc77e7fcbda0131e18eb1d4c02c5520b7e569b16b00","contract":["WithResource associates a configured Resource with a MeterProvider so collected ResourceMetrics carry its attributes","Meters created from the MeterProvider emit ScopeMetrics alongside the configured Resource","Passing multiple WithResource options to NewMeterProvider applies the last provided Resource","MeterProvider configured with WithResource shuts down cleanly"],"goal":"verify go.opentelemetry.io/otel/sdk/metric.WithResource in pkg:golang/go.opentelemetry.io/otel/sdk/metric@v1.39.0","kind":"HOW","packages":["pkg:golang/go.opentelemetry.io/otel/sdk/metric@v1.39.0"],"schemaVersion":1,"symbols":["go.opentelemetry.io/otel/sdk/metric.WithResource"]},"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/sdk/metric@v1.39.0"],"schemaVersion":1,"subject":"pkg:golang/go.opentelemetry.io/otel/sdk/metric@v1.39.0","symbols":["go.opentelemetry.io/otel/sdk/metric.WithResource"],"verifierAdapter":"golang@1"}

module example.com/sample

go 1.24.0

require (
	go.opentelemetry.io/otel v1.39.0
	go.opentelemetry.io/otel/sdk v1.39.0
	go.opentelemetry.io/otel/sdk/metric v1.39.0
)

require (
	github.com/cespare/xxhash/v2 v2.3.0 // indirect
	github.com/go-logr/logr v1.4.3 // indirect
	github.com/go-logr/stdr v1.2.2 // indirect
	github.com/google/uuid v1.6.0 // indirect
	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
	go.opentelemetry.io/otel/metric v1.39.0 // indirect
	go.opentelemetry.io/otel/trace v1.39.0 // indirect
	golang.org/x/sys v0.39.0 // indirect
)

github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
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 v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
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/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
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 v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
go.opentelemetry.io/auto/sdk v1.2.1 h1:jXsnJ4Lmnqd11kwkBV2LgLoFMZKizbCi5fNZ/ipaZ64=
go.opentelemetry.io/auto/sdk v1.2.1/go.mod h1:KRTj+aOaElaLi+wW1kO/DZRXwkF4C5xPbEe3ZiIhN7Y=
go.opentelemetry.io/otel v1.39.0 h1:8yPrr/S0ND9QEfTfdP9V+SiwT4E0G7Y5MO7p85nis48=
go.opentelemetry.io/otel v1.39.0/go.mod h1:kLlFTywNWrFyEdH0oj2xK0bFYZtHRYUdv1NklR/tgc8=
go.opentelemetry.io/otel/metric v1.39.0 h1:d1UzonvEZriVfpNKEVmHXbdf909uGTOQjA0HF0Ls5Q0=
go.opentelemetry.io/otel/metric v1.39.0/go.mod h1:jrZSWL33sD7bBxg1xjrqyDjnuzTUB0x1nBERXd7Ftcs=
go.opentelemetry.io/otel/sdk v1.39.0 h1:nMLYcjVsvdui1B/4FRkwjzoRVsMK8uL/cj0OyhKzt18=
go.opentelemetry.io/otel/sdk v1.39.0/go.mod h1:vDojkC4/jsTJsE+kh+LXYQlbL8CgrEcwmt1ENZszdJE=
go.opentelemetry.io/otel/sdk/metric v1.39.0 h1:cXMVVFVgsIf2YL6QkRF4Urbr/aMInf+2WKg+sEJTtB8=
go.opentelemetry.io/otel/sdk/metric v1.39.0/go.mod h1:xq9HEVH7qeX69/JnwEfp6fVq5wosJsY1mt4lLfYdVew=
go.opentelemetry.io/otel/trace v1.39.0 h1:2d2vfpEDmCJ5zVYz7ijaJdOF59xLomrvj7bjt6/qCJI=
go.opentelemetry.io/otel/trace v1.39.0/go.mod h1:88w4/PnZSazkGzz/w84VHpQafiU4EtqqlVdxWy+rNOA=
golang.org/x/sys v0.39.0 h1:CvCKL8MeisomCi6qNZ+wbb0DN9E5AATixKsvNtMoMFk=
golang.org/x/sys v0.39.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

package sample

import (
	"context"

	"go.opentelemetry.io/otel/attribute"
	sdkmetric "go.opentelemetry.io/otel/sdk/metric"
	"go.opentelemetry.io/otel/sdk/metric/metricdata"
	"go.opentelemetry.io/otel/sdk/resource"
)

// ConfiguredPipeline holds a MeterProvider and ManualReader wired with a Resource.
type ConfiguredPipeline struct {
	Provider *sdkmetric.MeterProvider
	Reader   *sdkmetric.ManualReader
}

// NewPipelineWithResource constructs a MeterProvider configured via sdkmetric.WithResource.
func NewPipelineWithResource(attrs ...attribute.KeyValue) *ConfiguredPipeline {
	res := resource.NewSchemaless(attrs...)
	reader := sdkmetric.NewManualReader()
	provider := sdkmetric.NewMeterProvider(
		sdkmetric.WithResource(res),
		sdkmetric.WithReader(reader),
	)
	return &ConfiguredPipeline{
		Provider: provider,
		Reader:   reader,
	}
}

// RecordAndCollect increments a counter on a meter from the provider and collects the resulting ResourceMetrics.
func (p *ConfiguredPipeline) RecordAndCollect(ctx context.Context, scopeName, counterName string, delta int64) (metricdata.ResourceMetrics, error) {
	meter := p.Provider.Meter(scopeName)
	counter, err := meter.Int64Counter(counterName)
	if err != nil {
		return metricdata.ResourceMetrics{}, err
	}
	counter.Add(ctx, delta)

	var rm metricdata.ResourceMetrics
	if err := p.Reader.Collect(ctx, &rm); err != nil {
		return metricdata.ResourceMetrics{}, err
	}
	return rm, nil
}

{
  "schemaVersion": 1,
  "goal": "verify go.opentelemetry.io/otel/sdk/metric.WithResource in pkg:golang/go.opentelemetry.io/otel/sdk/metric@v1.39.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/go.opentelemetry.io/otel/sdk/metric@v1.39.0"
  ],
  "symbols": [
    "go.opentelemetry.io/otel/sdk/metric.WithResource"
  ]
}

package main

import (
	"context"
	"fmt"
	"os"

	"example.com/sample"
	"go.opentelemetry.io/otel/attribute"
	sdkmetric "go.opentelemetry.io/otel/sdk/metric"
	"go.opentelemetry.io/otel/sdk/metric/metricdata"
	"go.opentelemetry.io/otel/sdk/resource"
)

func fail(msg string, args ...any) {
	fmt.Fprintf(os.Stderr, msg+"\n", args...)
	os.Exit(1)
}

func main() {
	ctx := context.Background()

	// Assertion 1: WithResource binds a custom Resource to a MeterProvider so collected ResourceMetrics carry its attributes.
	pipeline := sample.NewPipelineWithResource(
		attribute.String("service.name", "billing-worker"),
		attribute.String("service.version", "1.39.0"),
		attribute.String("deployment.environment", "staging"),
	)

	rm, err := pipeline.RecordAndCollect(ctx, "billing.scope", "jobs.processed", 7)
	if err != nil {
		fail("assertion 1 failed: RecordAndCollect returned error: %v", err)
	}
	if rm.Resource == nil {
		fail("assertion 1 failed: expected non-nil Resource on collected ResourceMetrics")
	}

	attrMap := make(map[string]string)
	for _, kv := range rm.Resource.Attributes() {
		attrMap[string(kv.Key)] = kv.Value.AsString()
	}
	if attrMap["service.name"] != "billing-worker" || attrMap["service.version"] != "1.39.0" || attrMap["deployment.environment"] != "staging" {
		fail("assertion 1 failed: unexpected resource attributes: %+v", attrMap)
	}

	// Assertion 2: Metrics recorded via a Meter from the provider are present alongside the configured Resource.
	if len(rm.ScopeMetrics) != 1 || rm.ScopeMetrics[0].Scope.Name != "billing.scope" {
		fail("assertion 2 failed: expected 1 ScopeMetrics for billing.scope, got %+v", rm.ScopeMetrics)
	}
	if len(rm.ScopeMetrics[0].Metrics) != 1 || rm.ScopeMetrics[0].Metrics[0].Name != "jobs.processed" {
		fail("assertion 2 failed: expected jobs.processed metric, got %+v", rm.ScopeMetrics[0].Metrics)
	}

	// Assertion 3: Multiple WithResource options passed to NewMeterProvider use the last provided Resource.
	firstRes := resource.NewSchemaless(attribute.String("service.name", "initial-service"))
	overrideRes := resource.NewSchemaless(attribute.String("service.name", "override-service"))
	reader := sdkmetric.NewManualReader()
	provider := sdkmetric.NewMeterProvider(
		sdkmetric.WithResource(firstRes),
		sdkmetric.WithResource(overrideRes),
		sdkmetric.WithReader(reader),
	)
	var overrideRM metricdata.ResourceMetrics
	if err := reader.Collect(ctx, &overrideRM); err != nil {
		fail("assertion 3 failed: Collect returned error: %v", err)
	}
	if overrideRM.Resource == nil || !overrideRM.Resource.Equal(overrideRes) {
		fail("assertion 3 failed: expected override Resource %v, got %v", overrideRes, overrideRM.Resource)
	}

	// Assertion 4: MeterProvider configured with WithResource shuts down cleanly without error.
	if err := pipeline.Provider.Shutdown(ctx); err != nil {
		fail("assertion 4 failed: pipeline Shutdown returned error: %v", err)
	}
	if err := provider.Shutdown(ctx); err != nil {
		fail("assertion 4 failed: provider Shutdown returned error: %v", err)
	}
}