Example code to convert Go structure to binary using Avro codec

goavro-tobinary-example.go

type Book struct {
	Name   string `json:"Name" avro:"Name" mapstructure:"Name"`
	Author string `json:"Author" avro:"Author" mapstructure:"Author"`
	Genre  string `json:"Genre" avro:"Genre" mapstructure:"Genre"`
	Rating int    `json:"Rating" avro:"Rating" mapstructure:"Rating"`
}

func (b *Book) ToBinary(schema string) ([]byte, error) {
	j, err := json.Marshal(b)
	if err != nil {
		return nil, err
	}
	codec, err := goavro.NewCodec(schema)
	if err != nil {
		return nil, err
	}
	nat, _, err := codec.NativeFromTextual(j)
	if err != nil {
		return nil, err
	}
	bin, err := codec.BinaryFromNative(nil, nat)
	if err != nil {
		return nil, err
	}
	return bin, nil
}