github.com/cncf/xds/go v0.0.0-20250501225837-2ac532fd4443: v3.ResourceLocator_Scheme_name

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 github.com/cncf/xds/go/xds/core/v3.ResourceLocator_Scheme_name in pkg:golang/github.com/cncf/xds/go@v0.0.0-20250501225837-2ac532fd4443
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/github.com/cncf/xds/go@v0.0.0-20250501225837-2ac532fd4443
Demonstrate these symbols/APIs:
  - github.com/cncf/xds/go/xds/core/v3.ResourceLocator_Scheme_name
Required runtime conditions:
  - ecosystem: golang
  - language: go
  - packageManager: go@1.26.6
  - runtime: go@1.26.6

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:sha256:20bc1fefef8d8ca9e104bac0de6d7af581f7615bb5b6ea2fb2ec93dff1d12ff1","contract":["ResourceLocator_Scheme_name maps enum value 0 to XDSTP string representation","ResourceLocator_Scheme_name maps enum value 1 to HTTP string representation","ResourceLocator_Scheme_name maps enum value 2 to FILE string representation","ResourceLocator_Scheme_name contains exactly three entries corresponding to valid ResourceLocator_Scheme values","ResourceLocator_Scheme String method returns the matching name from ResourceLocator_Scheme_name","ResourceLocator_Scheme_name and ResourceLocator_Scheme_value provide consistent bidirectional enum mapping"],"goal":"verify github.com/cncf/xds/go/xds/core/v3.ResourceLocator_Scheme_name in pkg:golang/github.com/cncf/xds/go@v0.0.0-20250501225837-2ac532fd4443","kind":"HOW","packages":["pkg:golang/github.com/cncf/xds/go@v0.0.0-20250501225837-2ac532fd4443"],"schemaVersion":1,"symbols":["github.com/cncf/xds/go/xds/core/v3.ResourceLocator_Scheme_name"]},"contractCommand":["go","run","./test"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","language":"go","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","packageManagerVersion":"1.26.6","runtime":"go","runtimeVersion":"1.26.6","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/github.com/cncf/xds/go@v0.0.0-20250501225837-2ac532fd4443"],"schemaVersion":1,"subject":"pkg:golang/github.com/cncf/xds/go@v0.0.0-20250501225837-2ac532fd4443","symbols":["github.com/cncf/xds/go/xds/core/v3.ResourceLocator_Scheme_name"],"verifierAdapter":"golang@1"}

module example.com/resourcelocatorschemename

go 1.23.0

require (
	github.com/cncf/xds/go v0.0.0-20250501225837-2ac532fd4443
	google.golang.org/protobuf v1.33.0
)

require github.com/envoyproxy/protoc-gen-validate v1.0.4 // indirect

github.com/cncf/xds/go v0.0.0-20250501225837-2ac532fd4443 h1:aQ3y1lwWyqYPiWZThqv1aFbZMiM9vblcSArJRf2Irls=
github.com/cncf/xds/go v0.0.0-20250501225837-2ac532fd4443/go.mod h1:W+zGtBO5Y1IgJhy4+A9GOqVhqLpfZi+vwmdNXUehLA8=
github.com/envoyproxy/protoc-gen-validate v1.0.4 h1:gVPz/FMfvh57HdSJQyvBtF00j8JU4zdyUgIUNhlgg0A=
github.com/envoyproxy/protoc-gen-validate v1.0.4/go.mod h1:qys6tmnRsYrQqIhm2bvKZH4Blx/1gTIZ2UKVY1M+Yew=
github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=

{
  "schemaVersion": 1,
  "goal": "verify github.com/cncf/xds/go/xds/core/v3.ResourceLocator_Scheme_name in pkg:golang/github.com/cncf/xds/go@v0.0.0-20250501225837-2ac532fd4443",
  "kind": "HOW",
  "packages": [
    "pkg:golang/github.com/cncf/xds/go@v0.0.0-20250501225837-2ac532fd4443"
  ],
  "symbols": [
    "github.com/cncf/xds/go/xds/core/v3.ResourceLocator_Scheme_name"
  ],
  "runtimeConditions": {
    "ecosystem": "golang",
    "language": "go",
    "packageManager": "go@1.26.6",
    "runtime": "go@1.26.6"
  }
}

package main

import (
	"fmt"
	"os"

	corev3 "github.com/cncf/xds/go/xds/core/v3"
)

func assert(condition bool, message string) {
	if !condition {
		fmt.Fprintf(os.Stderr, "assertion failed: %s\n", message)
		os.Exit(1)
	}
}

func main() {
	// Assertion 1: ResourceLocator_Scheme_name maps enum value 0 to XDSTP string representation
	{
		name, ok := corev3.ResourceLocator_Scheme_name[int32(corev3.ResourceLocator_XDSTP)]
		assert(ok, "expected ResourceLocator_Scheme_name to contain key for ResourceLocator_XDSTP")
		assert(name == "XDSTP", "expected ResourceLocator_Scheme_name[0] to be XDSTP")
		assert(int32(corev3.ResourceLocator_XDSTP) == 0, "expected ResourceLocator_XDSTP to equal 0")
	}

	// Assertion 2: ResourceLocator_Scheme_name maps enum value 1 to HTTP string representation
	{
		name, ok := corev3.ResourceLocator_Scheme_name[int32(corev3.ResourceLocator_HTTP)]
		assert(ok, "expected ResourceLocator_Scheme_name to contain key for ResourceLocator_HTTP")
		assert(name == "HTTP", "expected ResourceLocator_Scheme_name[1] to be HTTP")
		assert(int32(corev3.ResourceLocator_HTTP) == 1, "expected ResourceLocator_HTTP to equal 1")
	}

	// Assertion 3: ResourceLocator_Scheme_name maps enum value 2 to FILE string representation
	{
		name, ok := corev3.ResourceLocator_Scheme_name[int32(corev3.ResourceLocator_FILE)]
		assert(ok, "expected ResourceLocator_Scheme_name to contain key for ResourceLocator_FILE")
		assert(name == "FILE", "expected ResourceLocator_Scheme_name[2] to be FILE")
		assert(int32(corev3.ResourceLocator_FILE) == 2, "expected ResourceLocator_FILE to equal 2")
	}

	// Assertion 4: ResourceLocator_Scheme_name contains exactly three entries corresponding to valid ResourceLocator_Scheme values
	{
		assert(len(corev3.ResourceLocator_Scheme_name) == 3, "expected ResourceLocator_Scheme_name to have exactly 3 entries")
		_, okInvalidPos := corev3.ResourceLocator_Scheme_name[999]
		assert(!okInvalidPos, "expected undefined positive enum key 999 to not exist in ResourceLocator_Scheme_name")
		_, okInvalidNeg := corev3.ResourceLocator_Scheme_name[-1]
		assert(!okInvalidNeg, "expected negative enum key -1 to not exist in ResourceLocator_Scheme_name")
	}

	// Assertion 5: ResourceLocator_Scheme String method returns the matching name from ResourceLocator_Scheme_name
	{
		assert(corev3.ResourceLocator_XDSTP.String() == corev3.ResourceLocator_Scheme_name[int32(corev3.ResourceLocator_XDSTP)], "expected String() to match ResourceLocator_Scheme_name for XDSTP")
		assert(corev3.ResourceLocator_HTTP.String() == corev3.ResourceLocator_Scheme_name[int32(corev3.ResourceLocator_HTTP)], "expected String() to match ResourceLocator_Scheme_name for HTTP")
		assert(corev3.ResourceLocator_FILE.String() == corev3.ResourceLocator_Scheme_name[int32(corev3.ResourceLocator_FILE)], "expected String() to match ResourceLocator_Scheme_name for FILE")
	}

	// Assertion 6: ResourceLocator_Scheme_name and ResourceLocator_Scheme_value provide consistent bidirectional enum mapping
	{
		assert(len(corev3.ResourceLocator_Scheme_name) == len(corev3.ResourceLocator_Scheme_value), "expected name and value maps to have the same size")
		for val, name := range corev3.ResourceLocator_Scheme_name {
			reverseVal, ok := corev3.ResourceLocator_Scheme_value[name]
			assert(ok, fmt.Sprintf("expected ResourceLocator_Scheme_value to have key %s", name))
			assert(reverseVal == val, fmt.Sprintf("expected roundtrip value for %s to be %d, got %d", name, val, reverseVal))
		}
	}

	fmt.Println("PASS: all github.com/cncf/xds/go/xds/core/v3.ResourceLocator_Scheme_name contract assertions verified")
}