Selium

Selium是一个极具开发者友好性、可组合的消息平台，配置无需构建时间。

入门

Hello World

首先，创建一个新的Cargo项目

$ cargo new --bin hello-selium
$ cd hello-selium
$ cargo add futures
$ cargo add -F std selium
$ cargo add -F macros,rt tokio

将以下代码复制到hello-world/src/main.rs

use futures::{SinkExt, StreamExt};
use selium::{prelude::*, std::codecs::StringCodec};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let connection = selium::client()
        .with_certificate_authority("certs/client/ca.der")? // your Selium cert authority
        .with_cert_and_key(
            "certs/client/localhost.der",
            "certs/client/localhost.key.der",
        )? // your client certificates
        .connect("127.0.0.1:7001") // your Selium server's address
        .await?;

    let mut publisher = connection
        .publisher("/some/topic") // choose a topic to group similar messages together
        .with_encoder(StringCodec) // allows you to exchange string messages between clients
        .open() // opens a new stream for sending data
        .await?;

    let mut subscriber = connection
        .subscriber("/some/topic") // subscribe to the publisher's topic
        .with_decoder(StringCodec) // use the same codec as the publisher
        .open() // opens a new stream for receiving data
        .await?;

    // Send a message and close the publisher
    publisher.send("Hello, world!".into()).await?;
    publisher.finish().await?;

    // Receive the message
    if let Some(Ok(message)) = subscriber.next().await {
        println!("Received message: {message}");
    }

    Ok(())
}

为了测试、开发Selium或直接开始操作，可以使用selium-tools CLI生成一组自签名证书，用于与mTLS一起使用。

为此，安装selium-tools二进制文件，然后运行gen-certs命令。默认情况下，gen-certs会将证书输出到certs/client/*和certs/server/*。您可以使用-s和-c参数分别覆盖这些路径。

$ cargo install selium-tools
$ cargo run --bin selium-tools gen-certs

$ cargo install selium-tools
$ cargo install selium-server
$ cargo run --bin selium-server -- \
  --bind-addr=127.0.0.1:7001 \
  --ca certs/server/ca.der \
  --cert certs/server/localhost.der \
  --key certs/server/localhost.key.der

$ cargo run

$ cd benchmarks
$ cargo run --release

$ cargo run --release

Benchmark Results
---------------------
Number of Messages: 1,000,000
Number of Streams: 10
Message Size (Bytes): 32

| Duration             | Total Transferred    | Avg. Throughput      | Avg. Latency         |
| 1.3476 Secs          | 30.52 MB             | 22.65 MB/s           | 1347.56 ns           |

$ cargo run -- --help