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at end of file +tokio = { version = "1.0", features = ["rt-multi-thread", "macros"] } # Required for tonic +prost = "0.11" # Required for tonic +tonic = "0.8" + +[build-dependencies] +tonic-build = { version = "0.8", features = ["prost"] } # Required for tonic \ No newline at end of file diff --git a/README.md b/README.md new file mode 100644 index 0000000..5579fd7 --- /dev/null +++ b/README.md @@ -0,0 +1,5 @@ +# Project + +## Requirements + +- `protobuf` see [tonic dependencies](https://github.com/hyperium/tonic#dependencies) \ No newline at end of file diff --git a/build.rs b/build.rs new file mode 100644 index 0000000..0c941bb --- /dev/null +++ b/build.rs @@ -0,0 +1,4 @@ +fn main() -> Result<(), Box> { + tonic_build::compile_protos("proto/helloworld.proto")?; + Ok(()) +} \ No newline at end of file diff --git a/proto/helloworld.proto b/proto/helloworld.proto new file mode 100644 index 0000000..a4e029b --- /dev/null +++ b/proto/helloworld.proto @@ -0,0 +1,17 @@ +syntax = "proto3"; +package helloworld; + +service Greeter { + // Our SayHello rpc accepts HelloRequests and returns HelloReplies + rpc SayHello (HelloRequest) returns (HelloReply); +} + +message HelloRequest { + // Request message contains the name to be greeted + string name = 1; +} + +message HelloReply { + // Reply contains the greeting message + string message = 1; +} \ No newline at end of file diff --git a/src/client/main.rs b/src/client/main.rs index a693e1c..35cdb50 100644 --- a/src/client/main.rs +++ b/src/client/main.rs @@ -1,41 +1,21 @@ -use std::os::unix::net::{UnixListener, UnixStream}; -use std::io::{Read, Write}; +use hello_world::greeter_client::GreeterClient; +use hello_world::HelloRequest; -use anyhow::Context; - -fn main() -> anyhow::Result<()> { - let socket_path = "mysocket"; - - let mut unix_stream = - UnixStream::connect(socket_path).context("Could not create stream")?; - - write_request_and_shutdown(&mut unix_stream)?; - read_from_stream(&mut unix_stream)?; - - Ok(()) +pub mod hello_world { + tonic::include_proto!("helloworld"); } -fn write_request_and_shutdown(unix_stream: &mut UnixStream) -> anyhow::Result<()> { - unix_stream - .write(b"Hello?") - .context("Failed at writing onto the unix stream")?; +#[tokio::main] +async fn main() -> Result<(), Box> { + let mut client = GreeterClient::connect("http://[::1]:50051").await?; - println!("We sent a request"); - println!("Shutting down writing on the stream, waiting for response..."); + let request = tonic::Request::new(HelloRequest { + name: "Tonic".into(), + }); - unix_stream - .shutdown(std::net::Shutdown::Write) - .context("Could not shutdown writing on the stream")?; + let response = client.say_hello(request).await?; - Ok(()) -} + println!("RESPONSE={:?}", response); -fn read_from_stream(unix_stream: &mut UnixStream) -> anyhow::Result<()> { - let mut response = String::new(); - unix_stream - .read_to_string(&mut response) - .context("Failed at reading the unix stream")?; - - println!("We received this response: {}", response); Ok(()) } \ No newline at end of file diff --git a/src/common/internal_rpc.rs b/src/common/internal_rpc.rs deleted file mode 100644 index e69de29..0000000 diff --git a/src/common/mod.rs b/src/common/mod.rs deleted file mode 100644 index 219c060..0000000 --- a/src/common/mod.rs +++ /dev/null @@ -1 +0,0 @@ -pub mod internal_rpc; \ No newline at end of file diff --git a/src/daemon/main.rs b/src/daemon/main.rs index a2b7f29..22af836 100644 --- a/src/daemon/main.rs +++ b/src/daemon/main.rs @@ -1,39 +1,41 @@ -use std::os::unix::net::{UnixListener, UnixStream}; -use anyhow::Context; -use std::io::{Read, Write}; +use tonic::{transport::Server, Request, Response, Status}; -fn main() -> anyhow::Result<()> { - let socket_path = "mysocket"; +use hello_world::greeter_server::{Greeter, GreeterServer}; +use hello_world::{HelloReply, HelloRequest}; - if std::fs::metadata(socket_path).is_ok() { - println!("A socket is already present. Deleting..."); - std::fs::remove_file(socket_path).with_context(|| { - format!("could not delete previous socket at {:?}", socket_path) - })?; - } +pub mod hello_world { + tonic::include_proto!("helloworld"); +} - let unix_listener = - UnixListener::bind(socket_path).context("Could not create the unix socket")?; +#[derive(Default)] +pub struct MyGreeter {} - // put the daemon logic in a loop to accept several connections - loop { - let (mut unix_stream, socket_address) = unix_listener - .accept() - .context("Failed at accepting a connection on the unix listener")?; - handle_stream(unix_stream)?; +#[tonic::async_trait] +impl Greeter for MyGreeter { + async fn say_hello( + &self, + request: Request, + ) -> Result, Status> { + println!("Got a request from {:?}", request.remote_addr()); + + let reply = hello_world::HelloReply { + message: format!("Hello {}!", request.into_inner().name), + }; + Ok(Response::new(reply)) } } -fn handle_stream(mut unix_stream: UnixStream) -> anyhow::Result<()> { - let mut message = String::new(); - unix_stream - .read_to_string(&mut message) - .context("Failed at reading the unix stream")?; +#[tokio::main] +async fn main() -> Result<(), Box> { + let addr = "[::1]:50051".parse().unwrap(); + let greeter = MyGreeter::default(); - println!("We received this message: {}\nReplying...", message); + println!("GreeterServer listening on {}", addr); + + Server::builder() + .add_service(GreeterServer::new(greeter)) + .serve(addr) + .await?; - unix_stream - .write(b"I hear you!") - .context("Failed at writing onto the unix stream")?; Ok(()) } \ No newline at end of file