Rust中Protobuf使用详解

[dependencies]
prost = "0.14.1"
[build-dependencies]
prost-build = "0.14.1"

syntax = "proto3";
package hello;
message MyMessage {
  string name = 1;
  int32 id = 2;
}

use prost_build;
fn main() {
    println!("cargo:rerun-if-changed=hello.proto");
    // try create the output folder
    std::fs::create_dir_all("src/pb").expect("Failed to create output directory");
    // compile the proto file
    prost_build::Config::new()
        .out_dir("src/pb")
        .compile_protos(&["proto/hello.proto"], &["proto/"])
        .expect("Failed to compile proto files");
}

// include!("pb/hello.rs");
mod pb;
use pb::hello::MyMessage;
use prost::Message;
fn main() {
    let msg = MyMessage {
        name: "Protobuff example".to_string(),
        id: 123,
    };
    let encoded = msg.encode_to_vec();
    println!("Encoded Msg: {:?}", encoded);
    let decoded = MyMessage::decode(&encoded[..]).unwrap();
    println!("Decoded Msg: {:?}", decoded);
}