サンプル

Pack and unpack heterogeneous Protocol Buffers messages using anypb New, UnmarshalTo, UnmarshalNew, and MessageIs with type URL validation

sha256:d59418deed92e0442ff16c8406fd12a175ea23d3519018567218bf249fcc68c8

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。

宣言された環境 linux 24 · ubuntu · glibc 2.39 x64 go

環境	コントラクト	ステージ	実行日
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1golang:1.26-alpine@sha256:28d89ee9cc0f…	2026-08-27

HOW

ゴール: Pack and unpack heterogeneous Protocol Buffers messages using anypb New, UnmarshalTo, UnmarshalNew, and MessageIs with type URL validation
パッケージ: google.golang.org/protobuf v1.34.2
シンボル: anypb.MessageIs
anypb.New
anypb.UnmarshalNew
anypb.UnmarshalTo
作成日: 2026-08-27T10:20:06Z

anypb.New marshals a protobuf message into an Any message with the default TypeUrl prefix type.googleapis.com/ followed by the full message name, while anypb.New(nil) returns an error.
any.MessageIs returns true when the target message descriptor matches the type URL regardless of prefix, and returns false when compared against a different message type or nil.
any.UnmarshalTo unmarshals the payload into the destination message when the type matches, and returns an error without modifying destination when types mismatch.
any.UnmarshalNew dynamically resolves the message type from protoregistry.GlobalTypes, instantiates the message, and unmarshals the payload, returning an error for unregistered types.
anypb.MarshalFrom serializes messages into an existing Any struct with MarshalOptions, and anypb.UnmarshalNew supports custom protoregistry.Types resolvers via UnmarshalOptions.

匿名