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improve echo_bot example

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Astro 2019-01-29 23:04:42 +01:00
parent 2654722fa3
commit 1d69b1a256
1 changed files with 27 additions and 22 deletions
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49
examples/echo_bot.rs
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@ -24,17 +24,32 @@ fn main() {
// Make the two interfaces for sending and receiving independent
// of each other so we can move one into a closure.
let (sink, stream) = client.split();
let mut sink_state = Some(sink);
// Main loop, processes events
let done = stream.for_each(move |event| {
let mut sink_future = None;
if event.is_online() {
// Create outgoing pipe
let (mut tx, rx) = futures::unsync::mpsc::unbounded();
rt.spawn(
rx.forward(
sink.sink_map_err(|_| panic!("Pipe"))
)
.map(|(rx, mut sink)| {
drop(rx);
let _ = sink.close();
})
.map_err(|e| {
panic!("Send error: {:?}", e);
})
);
// Main loop, processes events
let mut wait_for_stream_end = false;
let done = stream.for_each(move |event| {
if wait_for_stream_end {
/* Do nothing */
} else if event.is_online() {
println!("Online!");
let presence = make_presence();
let sink = sink_state.take().unwrap();
sink_future = Some(Box::new(sink.send(Packet::Stanza(presence))));
tx.start_send(Packet::Stanza(presence)).unwrap();
} else if let Some(message) = event
.into_stanza()
.and_then(|stanza| Message::try_from(stanza).ok())
@ -42,31 +57,21 @@ fn main() {
match (message.from, message.bodies.get("")) {
(Some(ref from), Some(ref body)) if body.0 == "die" => {
println!("Secret die command triggered by {}", from);
let sink = sink_state.take().unwrap();
sink_future = Some(Box::new(sink.send(Packet::StreamEnd)));
wait_for_stream_end = true;
tx.start_send(Packet::StreamEnd).unwrap();
}
(Some(ref from), Some(ref body)) => {
if message.type_ != MessageType::Error {
// This is a message we'll echo
let reply = make_reply(from.clone(), &body.0);
let sink = sink_state.take().unwrap();
sink_future = Some(Box::new(sink.send(Packet::Stanza(reply))));
tx.start_send(Packet::Stanza(reply)).unwrap();
}
}
_ => {}
}
};
}
sink_future
.map(|future| {
let wait_send: Box<Future<Item = (), Error = tokio_xmpp::Error>> =
Box::new(future
.map(|sink| {
sink_state = Some(sink);
}));
wait_send
})
.unwrap_or_else(|| Box::new(future::ok(())))
future::ok(())
});
// Start polling `done`