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/dev/null +++ b/ms/server/src/main.rs @@ -0,0 +1,80 @@ +use chrono::offset::Utc; +use chrono::DateTime; +use serde::Serialize; +use std::net::SocketAddr; +use tokio::io::AsyncWriteExt; +use tokio::net::TcpListener; +use tokio::net::TcpStream; +use tokio::sync::broadcast; +use tokio::time::sleep; +use tokio::time::Duration; + +#[derive(Debug, Clone, Serialize)] +struct Message { + received: DateTime, + message: String, +} + +impl Message { + pub fn new(message: &str) -> Self { + Self { + received: Utc::now(), + message: message.into(), + } + } +} + +#[tokio::main(flavor = "current_thread")] +async fn main() { + env_logger::init(); + let (tx, mut rx) = broadcast::channel::(30); + + tokio::join!(consumer(rx), producer(tx.clone()), listener(tx)); +} + +/// Produtor de conteúdo +async fn producer(sink: broadcast::Sender) { + let messages = ["Hello world", "Goodbye Earth", "See you later alligator"]; + for message in messages.iter().cycle() { + match sink.send(Message::new(message)) { + Ok(_) => log::debug!("Send: {}", message), + Err(err) => log::error!("Error sending message: {:?}", err), + } + sleep(Duration::from_millis(500)).await; + } +} + +/// Aguada conexões de clientes +async fn listener(connector: broadcast::Sender) { + let listener = TcpListener::bind("127.0.0.1:4435") + .await + .expect("Failed binding"); + loop { + if let Ok((socket, addr)) = listener.accept().await { + log::debug!("Got new client: {:?}", addr); + let new_receiver = connector.subscribe(); + tokio::spawn(async move { worker(new_receiver, socket, addr).await }); + } + } +} + +/// Worker que envia as mensagens para os clientes +async fn worker(mut source: broadcast::Receiver, mut stream: TcpStream, addr: SocketAddr) { + loop { + let message = source.recv().await.expect("No message"); + log::debug!("Sending {:?} to {:?}", message, addr); + stream + .write_all(&bincode::serialize(&message).unwrap()) + .await + .expect("Failed to send"); + } +} + +/// Consumidor interno +/// Essa função existe porque o sender do broadcast precisa de pelo menos um listener. +async fn consumer(mut receiver: broadcast::Receiver) { + loop { + let message = receiver.recv().await.expect("Invalid message"); + log::debug!("Message: {:?}", message); + } +} diff --git a/ms/txtclient/Cargo.toml b/ms/txtclient/Cargo.toml new file mode 100644 index 0000000..95e552e --- /dev/null +++ b/ms/txtclient/Cargo.toml @@ -0,0 +1,8 @@ +[package] +name = "txtclient" +version = "0.1.0" +edition = "2021" + +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[dependencies] diff --git a/ms/txtclient/src/main.rs b/ms/txtclient/src/main.rs new file mode 100644 index 0000000..e7a11a9 --- /dev/null +++ b/ms/txtclient/src/main.rs @@ -0,0 +1,3 @@ +fn main() { + println!("Hello, world!"); +}