gitee.com/ks-custle/core-gm@v0.0.0-20230922171213-b83bdd97b62c/grpc/encoding/proto/proto.go (about)

     1  /*
     2   *
     3   * Copyright 2018 gRPC authors.
     4   *
     5   * Licensed under the Apache License, Version 2.0 (the "License");
     6   * you may not use this file except in compliance with the License.
     7   * You may obtain a copy of the License at
     8   *
     9   *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   *
    17   */
    18  
    19  // Package proto defines the protobuf codec. Importing this package will
    20  // register the codec.
    21  package proto
    22  
    23  import (
    24  	"fmt"
    25  
    26  	"gitee.com/ks-custle/core-gm/grpc/encoding"
    27  	"github.com/golang/protobuf/proto"
    28  )
    29  
    30  // Name is the name registered for the proto compressor.
    31  const Name = "proto"
    32  
    33  func init() {
    34  	encoding.RegisterCodec(codec{})
    35  }
    36  
    37  // codec is a Codec implementation with protobuf. It is the default codec for gRPC.
    38  type codec struct{}
    39  
    40  func (codec) Marshal(v interface{}) ([]byte, error) {
    41  	vv, ok := v.(proto.Message)
    42  	if !ok {
    43  		return nil, fmt.Errorf("failed to marshal, message is %T, want proto.Message", v)
    44  	}
    45  	return proto.Marshal(vv)
    46  }
    47  
    48  func (codec) Unmarshal(data []byte, v interface{}) error {
    49  	vv, ok := v.(proto.Message)
    50  	if !ok {
    51  		return fmt.Errorf("failed to unmarshal, message is %T, want proto.Message", v)
    52  	}
    53  	return proto.Unmarshal(data, vv)
    54  }
    55  
    56  func (codec) Name() string {
    57  	return Name
    58  }