In Go, encoding and decoding structs to and from Protobuf (Protocol Buffers) can be accomplished using the `protobuf` package. Below is an example that illustrates how to create a struct, define a Protobuf message, and encode/decode the data.
// First, define your Protobuf message in a .proto file
syntax = "proto3";
package example;
message User {
string name = 1;
int32 age = 2;
}
// Generating Go code with: protoc --go_out=. user.proto
// Go struct
package main
import (
"fmt"
"log"
"google.golang.org/protobuf/proto"
"path/to/generated/protobuf/package" // Adjust the import path
)
func main() {
// Create a new User instance
user := &example.User{
Name: "John Doe",
Age: 30,
}
// Marshal (encode) the struct to Protobuf
data, err := proto.Marshal(user)
if err != nil {
log.Fatal("Marshaling error: ", err)
}
// Unmarshal (decode) the Protobuf data back to struct
userUnmarshaled := &example.User{}
err = proto.Unmarshal(data, userUnmarshaled)
if err != nil {
log.Fatal("Unmarshaling error: ", err)
}
fmt.Printf("User: %s, Age: %d\n", userUnmarshaled.Name, userUnmarshaled.Age)
}
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