CodeSampleX

Ejemplo

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

Muestra verificada para golang cloud.google.com/go/auth v0.18.2: CredentialsPropertyProvider. El contrato se ejecutó en go 1.26 · linux debian/x64 · docker y…

sha256:5921a902fcbce5c04ab85687247d403e9dc1c9ea88a12aa1daf0f894761bdfe2

Esta red ofrece una sola cosa: una muestra que compila. La ejecutó en un sandbox y guardó el recibo firmado. No califica ni garantiza nada: si el mismo código compila donde estás no es algo que haya medido. Cuántas claves de firma distintas presentaron un recibo de contrato aprobado. Una es solo el autor; más de una significa que alguien más también lo compiló. Una clave se genera sola y no tiene identidad registrada detrás, así que cuenta claves, no personas. MIT-0

Evidencia de ejecución

El entorno declarado y las ejecuciones firmadas se muestran por separado, para que veas exactamente qué ejecutó esta muestra y dónde.

Base de evidencia
Contrato firmado aprobado
Recibos de verificación
1
Claves de firma que lo compilaron
1
Entorno declarado linux 24 · ubuntu · glibc 2.39 x64 go

Entornos de las ejecuciones de verificación

Entorno Contrato Etapas Ejecución
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

Caso

HOW
Objetivo
verify cloud.google.com/go/auth.CredentialsPropertyProvider in pkg:golang/cloud.google.com/go/auth@v0.18.2
Paquetes
Símbolos
  • cloud.google.com/go/auth.CredentialsPropertyProvider
Creado
2026-10-10T17:59:54Z

Contrato

  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

Archivos

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

Descargar el artefacto de código fuente (tar.gz)

Código fuente

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")
}

Seeder de origen

anónimo