| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #![feature(async_await, await_macro, futures_api)] |
| |
| use failure::{Error, ResultExt}; |
| use fidl::endpoints::{ServiceMarker, RequestStream}; |
| use fidl_fidl_examples_echo::{EchoMarker, EchoRequest, EchoRequestStream}; |
| use fuchsia_app::server::ServicesServer; |
| use fuchsia_async as fasync; |
| use futures::prelude::*; |
| |
| use std::env; |
| |
| fn spawn_echo_server(chan: fasync::Channel, quiet: bool) { |
| fasync::spawn(async move { |
| let mut stream = EchoRequestStream::from_channel(chan); |
| while let Some(EchoRequest::EchoString { value, responder }) = |
| await!(stream.try_next()).context("error running echo server")? |
| { |
| if !quiet { |
| println!("Received echo request for string {:?}", value); |
| } |
| responder.send(value.as_ref().map(|s| &**s)).context("error sending response")?; |
| if !quiet { |
| println!("echo response sent successfully"); |
| } |
| } |
| Ok(()) |
| }.unwrap_or_else(|e: failure::Error| eprintln!("{:?}", e))); |
| } |
| |
| #[fasync::run_singlethreaded] |
| async fn main() -> Result<(), Error> { |
| let quiet = env::args().any(|arg| arg == "-q"); |
| |
| let fut = ServicesServer::new() |
| .add_service((EchoMarker::NAME, move |chan| spawn_echo_server(chan, quiet))) |
| .start() |
| .context("Error starting echo services server")?; |
| |
| await!(fut).context("failed to execute echo future")?; |
| Ok(()) |
| } |