ice-rs

The goal of this project is to support Rust in ZeroC Ice.

Quick Start

This quick start guide will cover a client for the ZeroC Ice Minimal Sample. Create a binary application with cargo new minimal-client and add ice-rs to your [build-dependencies]and [dependencies]. Now add a build.rs file with the following content:

Minimal client

use ice_rs::slice::parser;
use std::path::Path;

fn main() -> Result<(), Box<dyn std::error::Error>> {
  println!("cargo:rerun-if-changed=build.rs");
  let ice_files = vec![
      String::from("<path/to/Hello.ice>")
  ];
  let root_module = parser::parse_ice_files(&ice_files, "<path/to/ice/include/dir>")?;
  root_module.generate(Path::new("./src/gen"), "")
}

Now add the following to you main.rs:

use ice_rs::communicator::Communicator;

mod gen;
use crate::gen::demo::{Hello,HelloPrx};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    let mut comm = Communicator::new().await?;
    let proxy = comm.string_to_proxy("hello:default -h localhost -p 10000").await?;
    let mut hello_prx = HelloPrx::checked_cast(proxy).await?;

    hello_prx.say_hello(None).await
}

Minimal server

Based on the same build.rs file you can add a server for the minimal example.

use ice_rs::communicator::Communicator;
use std::collections::HashMap;
use async_trait::async_trait;

mod gen;
use crate::gen::demo::{HelloServer, HelloI};

struct HelloImpl {}

#[async_trait]
impl HelloI for HelloImpl {
    async fn say_hello(&mut self, _context: Option<HashMap<String, String>>) -> ()
    {
        println!("Hello World!");
        ()
    }
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
    let comm = Communicator::new().await?;
    let mut adapter = comm.create_object_adapter_with_endpoint("hello", "tcp -h localhost -p 10000").await?;

    let hello_server = HelloServer::new(Box::new(HelloImpl{}));

    adapter.add("hello", Box::new(hello_server));
    adapter.activate().await?;
    
    Ok(())
}

Status

The status can be seen in the number of supported ZeroC Ice Demos.

• Ice/minimal
• Ice/optional
• Ice/context (implicit context missing, see Issue)
• IceGrid/simple

Supported transports:

• TCP
• SSL

Roadmap

The main goal is to support all ZeroC Ice Demos.