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70 lines
2.3 KiB
70 lines
2.3 KiB
5 years ago
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package jsonpb provides marshaling and unmarshaling between a protocol buffer
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// message and JSON. It follows the specification at
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// https://developers.google.com/protocol-buffers/docs/proto3#json.
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//
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// Do not rely on the default behavior of the standard encoding/json package
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// when called on generated message types as it does not operate correctly.
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//
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// Deprecated: Use the "google.golang.org/protobuf/encoding/protojson"
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// package instead.
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package jsonpb
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import (
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"github.com/golang/protobuf/proto"
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"google.golang.org/protobuf/reflect/protoreflect"
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"google.golang.org/protobuf/reflect/protoregistry"
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"google.golang.org/protobuf/runtime/protoimpl"
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)
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// AnyResolver takes a type URL, present in an Any message, and resolves it into
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// an instance of the associated message.
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type AnyResolver interface {
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Resolve(typeURL string) (proto.Message, error)
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}
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type anyResolver struct{ AnyResolver }
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func (r anyResolver) FindMessageByName(message protoreflect.FullName) (protoreflect.MessageType, error) {
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return r.FindMessageByURL(string(message))
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}
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func (r anyResolver) FindMessageByURL(url string) (protoreflect.MessageType, error) {
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m, err := r.Resolve(url)
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if err != nil {
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return nil, err
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}
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return protoimpl.X.MessageTypeOf(m), nil
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}
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func (r anyResolver) FindExtensionByName(field protoreflect.FullName) (protoreflect.ExtensionType, error) {
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return protoregistry.GlobalTypes.FindExtensionByName(field)
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}
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func (r anyResolver) FindExtensionByNumber(message protoreflect.FullName, field protoreflect.FieldNumber) (protoreflect.ExtensionType, error) {
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return protoregistry.GlobalTypes.FindExtensionByNumber(message, field)
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}
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func wellKnownType(s protoreflect.FullName) string {
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if s.Parent() == "google.protobuf" {
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switch s.Name() {
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case "Empty", "Any",
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"BoolValue", "BytesValue", "StringValue",
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"Int32Value", "UInt32Value", "FloatValue",
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"Int64Value", "UInt64Value", "DoubleValue",
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"Duration", "Timestamp",
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"NullValue", "Struct", "Value", "ListValue":
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return string(s.Name())
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}
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}
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return ""
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}
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func isMessageSet(md protoreflect.MessageDescriptor) bool {
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ms, ok := md.(interface{ IsMessageSet() bool })
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return ok && ms.IsMessageSet()
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}
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