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use futures::future::Future as _;
use futures::stream::Stream as _;
use snafu::ResultExt as _;
#[derive(Debug, snafu::Snafu)]
pub enum Error {
#[snafu(display("{}", source))]
Common { source: crate::error::Error },
#[snafu(display("failed to bind: {}", source))]
Bind { source: tokio::io::Error },
#[snafu(display(
"failed to parse read timeout '{}': {}",
input,
source
))]
ParseReadTimeout {
input: String,
source: std::num::ParseIntError,
},
}
pub type Result<T> = std::result::Result<T, Error>;
pub fn cmd<'a, 'b>(app: clap::App<'a, 'b>) -> clap::App<'a, 'b> {
app.about("Run a shellshare server")
.arg(
clap::Arg::with_name("address")
.long("address")
.takes_value(true),
)
.arg(
clap::Arg::with_name("buffer-size")
.long("buffer-size")
.takes_value(true),
)
.arg(
clap::Arg::with_name("read-timeout")
.long("read-timeout")
.takes_value(true),
)
}
pub fn run<'a>(matches: &clap::ArgMatches<'a>) -> super::Result<()> {
let address = matches.value_of("address").map_or_else(
|| Ok("0.0.0.0:4144".parse().unwrap()),
|s| {
s.parse()
.context(crate::error::ParseAddr)
.context(Common)
.context(super::Server)
},
)?;
let buffer_size =
matches
.value_of("buffer-size")
.map_or(Ok(4 * 1024 * 1024), |s| {
s.parse()
.context(crate::error::ParseBufferSize { input: s })
.context(Common)
.context(super::Server)
})?;
let read_timeout = matches.value_of("read-timeout").map_or(
Ok(std::time::Duration::from_secs(120)),
|s| {
s.parse()
.map(std::time::Duration::from_secs)
.context(ParseReadTimeout { input: s })
.context(super::Server)
},
)?;
run_impl(address, buffer_size, read_timeout).context(super::Server)
}
fn run_impl(
address: std::net::SocketAddr,
buffer_size: usize,
read_timeout: std::time::Duration,
) -> Result<()> {
let (mut sock_w, sock_r) = tokio::sync::mpsc::channel(100);
let listener = tokio::net::TcpListener::bind(&address).context(Bind)?;
let acceptor = listener
.incoming()
.map_err(|e| {
eprintln!("accept failed: {}", e);
})
.for_each(move |sock| {
sock_w.try_send(sock).map_err(|e| {
eprintln!("sending socket to manager thread failed: {}", e);
})
});
tokio::run(futures::future::lazy(move || {
let server =
crate::server::Server::new(buffer_size, read_timeout, sock_r)
.map_err(|e| eprintln!("{}", e));
tokio::spawn(server);
acceptor
}));
Ok(())
}
|
