CodeSampleX

サンプル

google.golang.org/grpc v1.27.0

検証済みサンプル — golang google.golang.org/grpc v1.27.0. go 1.26 · linux debian/x64 · docker で contract を実行し、成功しました: grpc.NewServer registers a unary ServiceDesc…

sha256:f2097c544b1ac52ed0d05356b6cc61d9fe4647be0d6ca99c16406548aa7b7f3b

このネットワークが提供するのは一つだけです。ビルドされるサンプル。サンドボックスで実行し、署名済みの受領証を保管します。等級はつけず、何も保証しません — 同じコードがあなたの環境でビルドされるかは測定していません。 合格した契約受領証を提出した異なる署名鍵の数です。1 なら作者だけ、2 以上なら他の誰かもビルドしています。鍵は自己生成で背後に登録された身元がないため、数えているのは人ではなく鍵です。 MIT-0

実行証拠

宣言された環境と署名済みの実行を分けてあります。このサンプルが何をどこで実行したかをそのまま確認できます。

証拠の基準
署名済みコントラクト合格
検証レシート
1
ビルドした署名鍵
1
宣言された環境 linux 24 · ubuntu · glibc 2.39 x64 go

検証実行環境

環境 コントラクト ステージ 実行日
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…		 2026-10-17

ケース

HOW
ゴール
verify pkg:golang/google.golang.org/grpc@v1.27.0
パッケージ
作成日
2026-10-17T05:02:55Z

コントラクト

  1. grpc.NewServer registers a unary ServiceDesc and reports the method via GetServiceInfo
  2. grpc.DialContext with bufconn.Listen and grpc.WithInsecure invokes the unary method with outgoing metadata and receives the expected response
  3. missing required incoming metadata returns codes.InvalidArgument via status.Error and is observed with status.Code on the client

ファイル

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

ソースアーティファクトをダウンロード (tar.gz)

ソース

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 pkg:golang/google.golang.org/grpc@v1.27.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/google.golang.org/grpc@v1.27.0

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:sha256:9cb65e3bb67738d2374479640340ea64b872f958ce1b6a67e9dca82c1fda6840","contract":["grpc.NewServer registers a unary ServiceDesc and reports the method via GetServiceInfo","grpc.DialContext with bufconn.Listen and grpc.WithInsecure invokes the unary method with outgoing metadata and receives the expected response","missing required incoming metadata returns codes.InvalidArgument via status.Error and is observed with status.Code on the client"],"goal":"verify pkg:golang/google.golang.org/grpc@v1.27.0","kind":"HOW","packages":["pkg:golang/google.golang.org/grpc@v1.27.0"],"schemaVersion":1},"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/grpc@v1.27.0"],"schemaVersion":1,"subject":"pkg:golang/google.golang.org/grpc@v1.27.0","verifierAdapter":"golang@1"}
go.mod
module sample

go 1.21

require google.golang.org/grpc v1.27.0

require (
	github.com/golang/protobuf v1.3.2 // indirect
	golang.org/x/net v0.0.0-20190311183353-d8887717615a // indirect
	golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a // indirect
	golang.org/x/text v0.3.0 // indirect
	google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 // indirect
)
go.sum
cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190311183353-d8887717615a h1:oWX7TPOiFAMXLq8o0ikBYfCJVlRHBcsciT5bXOrH628=
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a h1:1BGLXjeY4akVXGgbC9HugT3Jv3hCI0z56oJR5vAMgBU=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 h1:gSJIx1SDwno+2ElGhA4+qG2zF97qiUzTM+rQ0klBOcE=
google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
google.golang.org/grpc v1.27.0 h1:rRYRFMVgRv6E0D70Skyfsr28tDXIuuPZyWGMPdMcnXg=
google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:golang/google.golang.org/grpc@v1.27.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/google.golang.org/grpc@v1.27.0"
  ]
}
test/contract.go
package main

import (
	"context"
	"fmt"
	"net"
	"os"
	"time"

	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/metadata"
	"google.golang.org/grpc/status"
	"google.golang.org/grpc/test/bufconn"
)

type byteCodec struct{}

func (byteCodec) Marshal(v interface{}) ([]byte, error) {
	b, ok := v.(*[]byte)
	if !ok {
		return nil, fmt.Errorf("unexpected marshal type %T", v)
	}
	return *b, nil
}

func (byteCodec) Unmarshal(data []byte, v interface{}) error {
	b, ok := v.(*[]byte)
	if !ok {
		return fmt.Errorf("unexpected unmarshal type %T", v)
	}
	*b = append((*b)[:0], data...)
	return nil
}

func (byteCodec) String() string {
	return "bytes"
}

type echoService interface {
	Echo(ctx context.Context, in *[]byte) (*[]byte, error)
}

type echoServer struct{}

func (s *echoServer) Echo(ctx context.Context, in *[]byte) (*[]byte, error) {
	md, ok := metadata.FromIncomingContext(ctx)
	if !ok || len(md.Get("x-req-id")) == 0 || md.Get("x-req-id")[0] != "req-42" {
		return nil, status.Error(codes.InvalidArgument, "missing metadata")
	}
	out := []byte("ack:" + string(*in))
	return &out, nil
}

func echoHandler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
	in := new([]byte)
	if err := dec(in); err != nil {
		return nil, err
	}
	if interceptor == nil {
		return srv.(echoService).Echo(ctx, in)
	}
	info := &grpc.UnaryServerInfo{
		Server:     srv,
		FullMethod: "/sample.EchoService/Echo",
	}
	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
		return srv.(echoService).Echo(ctx, req.(*[]byte))
	}
	return interceptor(ctx, in, info, handler)
}

func main() {
	lis := bufconn.Listen(1024 * 1024)
	defer lis.Close()

	srv := grpc.NewServer(grpc.CustomCodec(byteCodec{}))
	srv.RegisterService(&grpc.ServiceDesc{
		ServiceName: "sample.EchoService",
		HandlerType: (*echoService)(nil),
		Methods: []grpc.MethodDesc{
			{
				MethodName: "Echo",
				Handler:    echoHandler,
			},
		},
		Streams:  []grpc.StreamDesc{},
		Metadata: "sample.proto",
	}, &echoServer{})

	info := srv.GetServiceInfo()
	svcInfo, ok := info["sample.EchoService"]
	if !ok || len(svcInfo.Methods) != 1 || svcInfo.Methods[0].Name != "Echo" {
		fmt.Fprintln(os.Stderr, "service registration check failed")
		os.Exit(1)
	}

	go func() {
		_ = srv.Serve(lis)
	}()
	defer srv.Stop()

	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	conn, err := grpc.DialContext(
		ctx,
		"bufnet",
		grpc.WithContextDialer(func(ctx context.Context, _ string) (net.Conn, error) {
			return lis.Dial()
		}),
		grpc.WithInsecure(),
		grpc.WithDefaultCallOptions(grpc.CallCustomCodec(byteCodec{})),
	)
	if err != nil {
		fmt.Fprintf(os.Stderr, "dial failed: %v\n", err)
		os.Exit(1)
	}
	defer conn.Close()

	outCtx := metadata.AppendToOutgoingContext(ctx, "x-req-id", "req-42")
	req := []byte("ping")
	var resp []byte
	if err := conn.Invoke(outCtx, "/sample.EchoService/Echo", &req, &resp); err != nil {
		fmt.Fprintf(os.Stderr, "invoke failed: %v\n", err)
		os.Exit(1)
	}
	if string(resp) != "ack:ping" {
		fmt.Fprintf(os.Stderr, "unexpected response: %q\n", string(resp))
		os.Exit(1)
	}

	var badResp []byte
	err = conn.Invoke(ctx, "/sample.EchoService/Echo", &req, &badResp)
	if status.Code(err) != codes.InvalidArgument {
		fmt.Fprintf(os.Stderr, "expected InvalidArgument, got %v\n", err)
		os.Exit(1)
	}

	fmt.Println("contract ok")
}

オリジンシーダー

匿名