cloudflared-mirror/vendor/google.golang.org/grpc/encoding/proto/proto.go

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/*
*
* Copyright 2018 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Package proto defines the protobuf codec. Importing this package will
// register the codec.
package proto
import (
"fmt"
"google.golang.org/grpc/encoding"
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"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/protoadapt"
)
// Name is the name registered for the proto compressor.
const Name = "proto"
func init() {
encoding.RegisterCodec(codec{})
}
// codec is a Codec implementation with protobuf. It is the default codec for gRPC.
type codec struct{}
func (codec) Marshal(v any) ([]byte, error) {
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vv := messageV2Of(v)
if vv == nil {
return nil, fmt.Errorf("failed to marshal, message is %T, want proto.Message", v)
}
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return proto.Marshal(vv)
}
func (codec) Unmarshal(data []byte, v any) error {
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vv := messageV2Of(v)
if vv == nil {
return fmt.Errorf("failed to unmarshal, message is %T, want proto.Message", v)
}
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return proto.Unmarshal(data, vv)
}
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func messageV2Of(v any) proto.Message {
switch v := v.(type) {
case protoadapt.MessageV1:
return protoadapt.MessageV2Of(v)
case protoadapt.MessageV2:
return v
}
return nil
}
func (codec) Name() string {
return Name
}