74 lines
2.4 KiB
Rust
74 lines
2.4 KiB
Rust
//! Native input transport. Only opaque frame/mount identities cross to the VM worker.
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use serde::{Deserialize, Serialize};
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use std::{
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io::{Read, Write},
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net::TcpStream,
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sync::mpsc::{SyncSender, sync_channel},
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thread,
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time::Duration,
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};
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use winit::event_loop::EventLoopProxy;
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#[derive(Debug, Clone, Serialize, Deserialize)]
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#[serde(deny_unknown_fields)]
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pub struct Input {
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pub session: u64,
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pub layout_version: u64,
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pub mount: u64,
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pub kind: String,
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}
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pub struct Client(SyncSender<Input>);
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impl Client {
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pub fn new(proxy: EventLoopProxy<crate::app::AppEvent>) -> anyhow::Result<Self> {
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let (sender, receiver) = sync_channel::<Input>(8);
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thread::Builder::new()
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.name("tessera-native-events".into())
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.spawn(move || {
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for input in receiver {
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if let Err(error) = send(&input) {
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let _ = proxy.send_event(crate::app::AppEvent::RuntimeFailed {
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message: error.to_string(),
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});
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}
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}
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})?;
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Ok(Self(sender))
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}
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pub fn send(&self, input: Input) -> bool {
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self.0.try_send(input).is_ok()
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}
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}
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fn send(input: &Input) -> anyhow::Result<()> {
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let body = serde_json::to_string(input)?;
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let mut stream =
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TcpStream::connect_timeout(&crate::api::API_ADDRESS.parse()?, Duration::from_secs(2))?;
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stream.set_read_timeout(Some(Duration::from_secs(10)))?;
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stream.set_write_timeout(Some(Duration::from_secs(2)))?;
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write!(
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stream,
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"POST /v1/namespaces/app.main/events HTTP/1.1\r\nHost: 127.0.0.1\r\nConnection: close\r\nContent-Type: application/json\r\nContent-Length: {}\r\n\r\n{}",
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body.len(),
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body
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)?;
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let mut response = String::new();
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stream.take(32768).read_to_string(&mut response)?;
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let status = response.split_whitespace().nth(1).unwrap_or("");
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// An old frame's event is deliberately discarded, with no automatic retry.
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if status == "409" {
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return Ok(());
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}
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if status != "200" {
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let body = response
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.split_once("\r\n\r\n")
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.map(|(_, body)| body)
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.unwrap_or(&response);
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anyhow::bail!(
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"Native event failed: {}",
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body.chars().take(1024).collect::<String>()
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);
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}
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Ok(())
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}
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