CodeSampleX

Пример

cloud.google.com/go/auth v0.18.2: CredentialsPropertyProvider

Проверенный пример — golang cloud.google.com/go/auth v0.18.2: CredentialsPropertyProvider. Контракт выполнен на go 1.26 · linux debian/x64 · docker и пройден.

sha256:5921a902fcbce5c04ab85687247d403e9dc1c9ea88a12aa1daf0f894761bdfe2

Эта сеть предлагает одно: образец, который собирается. Она запустила его в песочнице и сохранила подписанную квитанцию. Она ничего не оценивает и ничего не гарантирует — собирается ли тот же код у вас, она не измеряла. Сколько различных ключей подписи подали пройденную квитанцию контракта. Один — только автор; больше одного — значит, кто-то ещё тоже собрал. Ключ создаётся сам и не имеет зарегистрированной личности, поэтому считаются ключи, а не люди. MIT-0

Свидетельства выполнения

Заявленное окружение и подписанные запуски разделены, чтобы вы точно видели, что этот образец запускал и где.

Основа свидетельства
Подписанный контракт пройден
Квитанции проверки
1
Ключи подписи, собравшие его
1
Заявленная среда linux 24 · ubuntu · glibc 2.39 x64 go

Среды запусков проверки

Окружение Контракт Этапы Запуск
go 1.26 · linux debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1golang:1.26@sha256:e30143be198a…		 2026-10-10

Кейс

HOW
Цель
verify cloud.google.com/go/auth.CredentialsPropertyProvider in pkg:golang/cloud.google.com/go/auth@v0.18.2
Пакеты
Символы
  • cloud.google.com/go/auth.CredentialsPropertyProvider
Создан
2026-10-10T17:59:54Z

Контракт

  1. CredentialsPropertyProvider implementation returns the configured property string and nil error on success
  2. CredentialsPropertyProvider is used by CredentialsOptions to provide custom ProjectID resolution
  3. CredentialsPropertyProvider error is propagated when calling ProjectID on Credentials
  4. CredentialsPropertyFunc implements CredentialsPropertyProvider to supply a custom UniverseDomain

Файлы

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • main.go
  • spec.json
  • test/contract.go

Скачать артефакт с исходным кодом (tar.gz)

Исходный код

PROMPT.md
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 cloud.google.com/go/auth.CredentialsPropertyProvider in pkg:golang/cloud.google.com/go/auth@v0.18.2
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/cloud.google.com/go/auth@v0.18.2
Demonstrate these symbols/APIs:
  - cloud.google.com/go/auth.CredentialsPropertyProvider

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.
csx.json
{"case":{"caseId":"case:sha256:4332fee63fa0231b7a727af4f8df1f48f4ec5b8f550316df0efbb4c26f894680","contract":["CredentialsPropertyProvider implementation returns the configured property string and nil error on success","CredentialsPropertyProvider is used by CredentialsOptions to provide custom ProjectID resolution","CredentialsPropertyProvider error is propagated when calling ProjectID on Credentials","CredentialsPropertyFunc implements CredentialsPropertyProvider to supply a custom UniverseDomain"],"goal":"verify cloud.google.com/go/auth.CredentialsPropertyProvider in pkg:golang/cloud.google.com/go/auth@v0.18.2","kind":"HOW","packages":["pkg:golang/cloud.google.com/go/auth@v0.18.2"],"schemaVersion":1,"symbols":["cloud.google.com/go/auth.CredentialsPropertyProvider"]},"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/cloud.google.com/go/auth@v0.18.2"],"schemaVersion":1,"subject":"pkg:golang/cloud.google.com/go/auth@v0.18.2","symbols":["cloud.google.com/go/auth.CredentialsPropertyProvider"],"verifierAdapter":"golang@1"}
go.mod
module sample

go 1.26.6

require cloud.google.com/go/auth v0.18.2

require (
	cloud.google.com/go/compute/metadata v0.9.0 // indirect
	github.com/googleapis/gax-go/v2 v2.17.0 // indirect
	golang.org/x/sys v0.40.0 // indirect
)
go.sum
cloud.google.com/go/auth v0.18.2 h1:+Nbt5Ev0xEqxlNjd6c+yYUeosQ5TtEUaNcN/3FozlaM=
cloud.google.com/go/auth v0.18.2/go.mod h1:xD+oY7gcahcu7G2SG2DsBerfFxgPAJz17zz2joOFF3M=
cloud.google.com/go/compute/metadata v0.9.0 h1:pDUj4QMoPejqq20dK0Pg2N4yG9zIkYGdBtwLoEkH9Zs=
cloud.google.com/go/compute/metadata v0.9.0/go.mod h1:E0bWwX5wTnLPedCKqk3pJmVgCBSM6qQI1yTBdEb3C10=
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/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
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/s2a-go v0.1.9 h1:LGD7gtMgezd8a/Xak7mEWL0PjoTQFvpRudN895yqKW0=
github.com/google/s2a-go v0.1.9/go.mod h1:YA0Ei2ZQL3acow2O62kdp9UlnvMmU7kA6Eutn0dXayM=
github.com/googleapis/enterprise-certificate-proxy v0.3.11 h1:vAe81Msw+8tKUxi2Dqh/NZMz7475yUvmRIkXr4oN2ao=
github.com/googleapis/enterprise-certificate-proxy v0.3.11/go.mod h1:RFV7MUdlb7AgEq2v7FmMCfeSMCllAzWxFgRdusoGks8=
github.com/googleapis/gax-go/v2 v2.17.0 h1:RksgfBpxqff0EZkDWYuz9q/uWsTVz+kf43LsZ1J6SMc=
github.com/googleapis/gax-go/v2 v2.17.0/go.mod h1:mzaqghpQp4JDh3HvADwrat+6M3MOIDp5YKHhb9PAgDY=
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/contrib/instrumentation/net/http/otelhttp v0.61.0 h1:F7Jx+6hwnZ41NSFTO5q4LYDtJRXBf2PD0rNBkeB/lus=
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.61.0/go.mod h1:UHB22Z8QsdRDrnAtX4PntOl36ajSxcdUMt1sF7Y6E7Q=
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/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/crypto v0.47.0 h1:V6e3FRj+n4dbpw86FJ8Fv7XVOql7TEwpHapKoMJ/GO8=
golang.org/x/crypto v0.47.0/go.mod h1:ff3Y9VzzKbwSSEzWqJsJVBnWmRwRSHt/6Op5n9bQc4A=
golang.org/x/net v0.49.0 h1:eeHFmOGUTtaaPSGNmjBKpbng9MulQsJURQUAfUwY++o=
golang.org/x/net v0.49.0/go.mod h1:/ysNB2EvaqvesRkuLAyjI1ycPZlQHM3q01F02UY/MV8=
golang.org/x/sys v0.40.0 h1:DBZZqJ2Rkml6QMQsZywtnjnnGvHza6BTfYFWY9kjEWQ=
golang.org/x/sys v0.40.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
golang.org/x/text v0.33.0 h1:B3njUFyqtHDUI5jMn1YIr5B0IE2U0qck04r6d4KPAxE=
golang.org/x/text v0.33.0/go.mod h1:LuMebE6+rBincTi9+xWTY8TztLzKHc/9C1uBCG27+q8=
google.golang.org/genproto v0.0.0-20260128011058-8636f8732409 h1:VQZ/yAbAtjkHgH80teYd2em3xtIkkHd7ZhqfH2N9CsM=
google.golang.org/genproto/googleapis/rpc v0.0.0-20260128011058-8636f8732409 h1:H86B94AW+VfJWDqFeEbBPhEtHzJwJfTbgE2lZa54ZAQ=
google.golang.org/genproto/googleapis/rpc v0.0.0-20260128011058-8636f8732409/go.mod h1:j9x/tPzZkyxcgEFkiKEEGxfvyumM01BEtsW8xzOahRQ=
google.golang.org/grpc v1.78.0 h1:K1XZG/yGDJnzMdd/uZHAkVqJE+xIDOcmdSFZkBUicNc=
google.golang.org/grpc v1.78.0/go.mod h1:I47qjTo4OKbMkjA/aOOwxDIiPSBofUtQUI5EfpWvW7U=
google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
main.go
package main

import (
	"context"
	"fmt"

	"cloud.google.com/go/auth"
)

type staticProvider struct {
	value string
}

func (s staticProvider) GetProperty(ctx context.Context) (string, error) {
	return s.value, nil
}

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

	var provider auth.CredentialsPropertyProvider = staticProvider{value: "sample-project"}
	prop, err := provider.GetProperty(ctx)
	if err != nil {
		fmt.Printf("GetProperty error: %v\n", err)
		return
	}
	fmt.Printf("Property value: %s\n", prop)

	creds := auth.NewCredentials(&auth.CredentialsOptions{
		ProjectIDProvider: provider,
	})

	projectID, err := creds.ProjectID(ctx)
	if err != nil {
		fmt.Printf("ProjectID error: %v\n", err)
		return
	}
	fmt.Printf("Resolved ProjectID: %s\n", projectID)
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify cloud.google.com/go/auth.CredentialsPropertyProvider in pkg:golang/cloud.google.com/go/auth@v0.18.2",
  "kind": "HOW",
  "packages": [
    "pkg:golang/cloud.google.com/go/auth@v0.18.2"
  ],
  "symbols": [
    "cloud.google.com/go/auth.CredentialsPropertyProvider"
  ]
}
test/contract.go
package main

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

	"cloud.google.com/go/auth"
)

type staticProvider struct {
	value string
}

func (s staticProvider) GetProperty(ctx context.Context) (string, error) {
	return s.value, nil
}

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

	// Assertion 1: CredentialsPropertyProvider implementation returns the configured property string and nil error on success
	{
		var provider auth.CredentialsPropertyProvider = staticProvider{value: "test-property-value"}
		val, err := provider.GetProperty(ctx)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Assertion 1 failed: unexpected error: %v\n", err)
			os.Exit(1)
		}
		if val != "test-property-value" {
			fmt.Fprintf(os.Stderr, "Assertion 1 failed: expected %q, got %q\n", "test-property-value", val)
			os.Exit(1)
		}
	}

	// Assertion 2: CredentialsPropertyProvider is used by CredentialsOptions to provide custom ProjectID resolution
	{
		provider := staticProvider{value: "sample-project-id"}
		creds := auth.NewCredentials(&auth.CredentialsOptions{
			ProjectIDProvider: provider,
		})
		projectID, err := creds.ProjectID(ctx)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Assertion 2 failed: unexpected error: %v\n", err)
			os.Exit(1)
		}
		if projectID != "sample-project-id" {
			fmt.Fprintf(os.Stderr, "Assertion 2 failed: expected %q, got %q\n", "sample-project-id", projectID)
			os.Exit(1)
		}
	}

	// Assertion 3: CredentialsPropertyProvider error is propagated when calling ProjectID on Credentials
	{
		expectedErr := errors.New("failed to retrieve property")
		errorProvider := auth.CredentialsPropertyFunc(func(ctx context.Context) (string, error) {
			return "", expectedErr
		})
		creds := auth.NewCredentials(&auth.CredentialsOptions{
			ProjectIDProvider: errorProvider,
		})
		_, err := creds.ProjectID(ctx)
		if err == nil {
			fmt.Fprintf(os.Stderr, "Assertion 3 failed: expected error, got nil\n")
			os.Exit(1)
		}
		if !errors.Is(err, expectedErr) {
			fmt.Fprintf(os.Stderr, "Assertion 3 failed: expected %v, got %v\n", expectedErr, err)
			os.Exit(1)
		}
	}

	// Assertion 4: CredentialsPropertyFunc implements CredentialsPropertyProvider to supply a custom UniverseDomain
	{
		domainProvider := auth.CredentialsPropertyFunc(func(ctx context.Context) (string, error) {
			return "example.com", nil
		})
		var provider auth.CredentialsPropertyProvider = domainProvider
		creds := auth.NewCredentials(&auth.CredentialsOptions{
			UniverseDomainProvider: provider,
		})
		universeDomain, err := creds.UniverseDomain(ctx)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Assertion 4 failed: unexpected error: %v\n", err)
			os.Exit(1)
		}
		if universeDomain != "example.com" {
			fmt.Fprintf(os.Stderr, "Assertion 4 failed: expected %q, got %q\n", "example.com", universeDomain)
			os.Exit(1)
		}
	}

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

Исходный сидер

аноним