034c850254
* examples: update to `tracing` 0.1.14, use `#[instrument]` Now that `tracing-attributes`'s `#[instrument]` macro plays nicely with `async-trait`, we can update the tracing example to use `instrument`. This lets us simplify the events emitted in the example. Signed-off-by: Eliza Weisman <[email protected]> * feat(transport): Dynamic load balancing (#341) * Fix typo (#356) Co-authored-by: Dawid Nowak <[email protected]> Co-authored-by: Paulo Duarte <[email protected]>
53 lines
1.2 KiB
Rust
53 lines
1.2 KiB
Rust
use tonic::{transport::Server, Request, Response, Status};
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pub mod hello_world {
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tonic::include_proto!("helloworld");
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}
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use hello_world::{
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greeter_server::{Greeter, GreeterServer},
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HelloReply, HelloRequest,
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};
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#[derive(Debug, Default)]
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pub struct MyGreeter {}
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#[tonic::async_trait]
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impl Greeter for MyGreeter {
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#[tracing::instrument]
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async fn say_hello(
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&self,
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request: Request<HelloRequest>,
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) -> Result<Response<HelloReply>, Status> {
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tracing::info!("received request");
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let reply = hello_world::HelloReply {
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message: format!("Hello {}!", request.into_inner().name),
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};
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tracing::debug!("sending response");
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Ok(Response::new(reply))
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}
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}
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#[tokio::main]
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async fn main() -> Result<(), Box<dyn std::error::Error>> {
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tracing_subscriber::fmt()
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.with_max_level(tracing::Level::DEBUG)
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.init();
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let addr = "[::1]:50051".parse().unwrap();
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let greeter = MyGreeter::default();
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tracing::info!(message = "Starting server.", %addr);
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Server::builder()
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.trace_fn(|_| tracing::info_span!("helloworld_server"))
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.add_service(GreeterServer::new(greeter))
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.serve(addr)
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.await?;
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Ok(())
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}
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