mirror of
https://github.com/tokio-rs/tokio.git
synced 2026-08-31 00:00:07 +02:00
David Kellum
c9532e49d7
* use dyn Trait syntax where appropriate recent rust nightly started warning that not using `dyn` was deprecated. This requires MSRV 1.27.0+. * rustfmt fallout from dyn additions * stop explicit allow of rust_2018_idioms * more dyn Trait syntax * drop tokio-macros from 0.1.x workspace Since tokio-macros specifies an edition=2018, we would otherwise require MSRV 1.31.0 to build/test it. And tokio-macros isn't used with tokio 0.1.x. * reactor: narrow tokio-io-pool dev dep to 0.1.4 Since 0.1.5-6 is now a edition=2018 crate, which has effective MSRV 1.31.0. * narrow tempfile dev-dep to avoid MSRV bump tempfile 3.1.0 pulls in rand 0.7.0 and is MSRV 1.32.0 * narrow flate2 dev-dep to avoid MSRV bump flate2 1.0.10-11 have MSRV 1.34.0. github refs: alexcrichton/flate2-rs#207 * fs: drop deprecated tempdir crate use in tests In particular because it pulls in old rand duplicates. Replace use with tempfile::tempdir() which has been available since tempfile 3.0.0. backport-of: #1312 * increase CI MSRV to 1.28.0
48 lines
1.3 KiB
Rust
48 lines
1.3 KiB
Rust
//! Echo everything received on STDIN to STDOUT.
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#![deny(deprecated, warnings)]
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extern crate futures;
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extern crate tokio_codec;
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extern crate tokio_fs;
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extern crate tokio_threadpool;
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use tokio_codec::{FramedRead, FramedWrite, LinesCodec};
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use tokio_fs::{stderr, stdin, stdout};
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use tokio_threadpool::Builder;
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use futures::{Future, Sink, Stream};
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use std::io;
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pub fn main() -> Result<(), Box<dyn std::error::Error>> {
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let pool = Builder::new().pool_size(1).build();
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pool.spawn({
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let input = FramedRead::new(stdin(), LinesCodec::new());
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let output = FramedWrite::new(stdout(), LinesCodec::new()).with(|line: String| {
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let mut out = "OUT: ".to_string();
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out.push_str(&line);
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Ok::<_, io::Error>(out)
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});
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let error = FramedWrite::new(stderr(), LinesCodec::new()).with(|line: String| {
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let mut out = "ERR: ".to_string();
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out.push_str(&line);
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Ok::<_, io::Error>(out)
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});
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let dst = output.fanout(error);
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input
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.forward(dst)
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.map(|_| ())
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.map_err(|e| panic!("io error = {:?}", e))
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});
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pool.shutdown_on_idle()
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.wait()
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.map_err(|_| "failed to shutdown the thread pool")?;
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Ok(())
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}
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