google.golang.org/genproto/googleapis/api v0.0.0-20241007155032-5fefd90f89a9: annotations.HttpRule_Post

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 google.golang.org/genproto/googleapis/api/annotations.HttpRule_Post in pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20241007155032-5fefd90f89a9
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20241007155032-5fefd90f89a9
Demonstrate these symbols/APIs:
  - google.golang.org/genproto/googleapis/api/annotations.HttpRule_Post
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: esm
  - packageManager: npm@10.9.8
  - runtime: node@22.23.2

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:be9e862f3332350c2c83a2864858e95cb7aa6a2593e0e6f1b5b00ecf8514b59f","contract":["annotations.HttpRule_Post encapsulates the POST URL template for HttpRule","annotations.HttpRule configured with HttpRule_Post returns POST URL via GetPost and GetPattern","annotations.HttpRule.GetPattern resolves to *annotations.HttpRule_Post via type assertion","annotations.HttpRule with HttpRule_Post serializes and deserializes accurately with protobuf wire format"],"goal":"verify google.golang.org/genproto/googleapis/api/annotations.HttpRule_Post in pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20241007155032-5fefd90f89a9","kind":"HOW","packages":["pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20241007155032-5fefd90f89a9"],"schemaVersion":1,"symbols":["google.golang.org/genproto/googleapis/api/annotations.HttpRule_Post"]},"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/google.golang.org/genproto/googleapis/api@v0.0.0-20241007155032-5fefd90f89a9"],"schemaVersion":1,"subject":"pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20241007155032-5fefd90f89a9","symbols":["google.golang.org/genproto/googleapis/api/annotations.HttpRule_Post"],"verifierAdapter":"golang@1"}

module example.com/sample

go 1.22

require (
	google.golang.org/genproto/googleapis/api v0.0.0-20241007155032-5fefd90f89a9
	google.golang.org/protobuf v1.35.1
)

google.golang.org/genproto/googleapis/api v0.0.0-20241007155032-5fefd90f89a9 h1:T6rh4haD3GVYsgEfWExoCZA2o2FmbNyKpTuAxbEFPTg=
google.golang.org/genproto/googleapis/api v0.0.0-20241007155032-5fefd90f89a9/go.mod h1:wp2WsuBYj6j8wUdo3ToZsdxxixbvQNAHqVJrTgi5E5M=
google.golang.org/protobuf v1.35.1 h1:m3LfL6/Ca+fqnjnlqQXNpFPABW1UD7mjh8KO2mKFytA=
google.golang.org/protobuf v1.35.1/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=

package main

import (
	"fmt"
	"log"

	"google.golang.org/genproto/googleapis/api/annotations"
	"google.golang.org/protobuf/proto"
)

func main() {
	postPattern := &annotations.HttpRule_Post{
		Post: "/v1/{parent=publishers/*}/books",
	}

	rule := &annotations.HttpRule{
		Selector: "google.example.library.v1.LibraryService.CreateBook",
		Pattern:  postPattern,
		Body:     "book",
	}

	data, err := proto.Marshal(rule)
	if err != nil {
		log.Fatalf("failed to marshal HttpRule: %v", err)
	}

	var decoded annotations.HttpRule
	if err := proto.Unmarshal(data, &decoded); err != nil {
		log.Fatalf("failed to unmarshal HttpRule: %v", err)
	}

	fmt.Printf("Selector: %s\n", decoded.GetSelector())
	fmt.Printf("HTTP POST Pattern: %s\n", decoded.GetPost())
	fmt.Printf("Body: %s\n", decoded.GetBody())
}

{
  "schemaVersion": 1,
  "goal": "verify google.golang.org/genproto/googleapis/api/annotations.HttpRule_Post in pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20241007155032-5fefd90f89a9",
  "kind": "HOW",
  "packages": [
    "pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20241007155032-5fefd90f89a9"
  ],
  "symbols": [
    "google.golang.org/genproto/googleapis/api/annotations.HttpRule_Post"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "esm",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}

package main

import (
	"fmt"
	"os"

	"google.golang.org/genproto/googleapis/api/annotations"
	"google.golang.org/protobuf/proto"
)

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

func main() {
	// 1. HttpRule_Post encapsulates the POST URL template for HttpRule
	postPattern := &annotations.HttpRule_Post{
		Post: "/v1/{parent=publishers/*}/books",
	}
	assert(postPattern.Post == "/v1/{parent=publishers/*}/books", "Post field must match initialized value")

	// 2. HttpRule configured with HttpRule_Post returns POST URL via GetPost and GetPattern
	rule := &annotations.HttpRule{
		Selector: "google.example.library.v1.LibraryService.CreateBook",
		Pattern:  postPattern,
		Body:     "book",
	}
	assert(rule.GetSelector() == "google.example.library.v1.LibraryService.CreateBook", "selector must match")
	assert(rule.GetPost() == "/v1/{parent=publishers/*}/books", "GetPost must return configured POST path")
	assert(rule.GetGet() == "", "GetGet must return empty string for POST rule")
	assert(rule.GetBody() == "book", "body mapping must match")

	// 3. Pattern interface resolves to *annotations.HttpRule_Post via type assertion
	switch p := rule.GetPattern().(type) {
	case *annotations.HttpRule_Post:
		assert(p.Post == "/v1/{parent=publishers/*}/books", "type assertion to *HttpRule_Post must match path")
	default:
		assert(false, "pattern must be of type *annotations.HttpRule_Post")
	}

	// 4. HttpRule with HttpRule_Post marshals and unmarshals accurately with protobuf wire format
	data, err := proto.Marshal(rule)
	assert(err == nil, "proto.Marshal must succeed")
	assert(len(data) > 0, "marshaled bytes must not be empty")

	var decoded annotations.HttpRule
	err = proto.Unmarshal(data, &decoded)
	assert(err == nil, "proto.Unmarshal must succeed")
	assert(decoded.GetSelector() == rule.GetSelector(), "decoded selector must match")
	assert(decoded.GetPost() == "/v1/{parent=publishers/*}/books", "decoded GetPost must match")
	assert(decoded.GetBody() == "book", "decoded body must match")

	// Verify decoded pattern type
	if postDecoded, ok := decoded.GetPattern().(*annotations.HttpRule_Post); ok {
		assert(postDecoded.Post == "/v1/{parent=publishers/*}/books", "decoded pattern Post field must match")
	} else {
		assert(false, "decoded pattern must be *annotations.HttpRule_Post")
	}

	fmt.Println("All contract assertions for annotations.HttpRule_Post passed successfully.")
}