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replace Connection::send_mut with internal mutability

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This commit is contained in:
Vinzenz Schroeter 2024-11-12 19:34:50 +01:00
parent 7bc59f6df8
commit 4f1ef8aafb
2 changed files with 15 additions and 87 deletions
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9
crates/servicepoint/examples/websocket.rs
View file

@ -5,20 +5,17 @@ use servicepoint::{
};
fn main() {
// make connection mut
let mut connection =
let connection =
Connection::open_websocket("ws://localhost:8080".parse().unwrap())
.unwrap();
// use send_mut instead of send
connection.send_mut(Command::Clear).unwrap();
connection.send(Command::Clear).unwrap();
let mut pixels = Bitmap::max_sized();
pixels.fill(true);
// use send_mut instead of send
connection
.send_mut(Command::BitmapLinearWin(
.send(Command::BitmapLinearWin(
Origin::ZERO,
pixels,
CompressionCode::Lzma,

93
crates/servicepoint/src/connection.rs
View file

@ -1,5 +1,4 @@
use std::fmt::Debug;
use crate::packet::Packet;
/// A connection to the display.
@ -35,20 +34,13 @@ pub enum Connection {
/// [servicepoint-websocket-relay]: https://github.com/kaesaecracker/servicepoint-websocket-relay
#[cfg(feature = "protocol_websocket")]
WebSocket(
tungstenite::WebSocket<
std::sync::Arc<std::sync::Mutex<tungstenite::WebSocket<
tungstenite::stream::MaybeTlsStream<std::net::TcpStream>,
>,
>>>,
),
/// A fake connection for testing that does not actually send anything.
///
/// This variant allows immutable send.
Fake,
/// A fake connection for testing that does not actually send anything.
///
/// This variant does not allow immutable send.
FakeMutableSend,
}
#[derive(Debug)]
@ -96,7 +88,7 @@ impl Connection {
/// let uri = "ws://localhost:8080".parse().unwrap();
/// let mut connection = Connection::open_websocket(uri)
/// .expect("could not connect");
/// connection.send_mut(Command::Clear)
/// connection.send(Command::Clear)
/// .expect("send failed");
/// ```
#[cfg(feature = "protocol_websocket")]
@ -111,25 +103,17 @@ impl Connection {
let request = ClientRequestBuilder::new(uri).into_client_request()?;
let (sock, _) = connect(request)?;
Ok(Self::WebSocket(sock))
Ok(Self::WebSocket(std::sync::Arc::new(std::sync::Mutex::new(sock))))
}
/// Send something packet-like to the display. Usually this is in the form of a Command.
///
/// This variant can only be used for connections that support immutable send, e.g. [Connection::Udp].
///
/// If you want to be able to switch the protocol, you should use [Self::send_mut] instead.
///
/// # Arguments
///
/// - `packet`: the packet-like to send
///
/// returns: true if packet was sent, otherwise false
///
/// # Panics
///
/// If the connection does not support immutable send, e.g. for [Connection::WebSocket].
///
/// # Examples
///
/// ```rust
@ -150,6 +134,13 @@ impl Connection {
.map_err(SendError::IoError)
.map(move |_| ()) // ignore Ok value
}
#[cfg(feature = "protocol_websocket")]
Connection::WebSocket(socket) => {
let mut socket = socket.lock().unwrap();
socket
.send(tungstenite::Message::Binary(data))
.map_err(SendError::WebsocketError)
}
Connection::Fake => {
let _ = data;
Ok(())
@ -160,58 +151,13 @@ impl Connection {
}
}
}
/// Send something packet-like to the display. Usually this is in the form of a Command.
///
/// This variant has to be used for connections that do not support immutable send, e.g. [Connection::WebSocket].
///
/// If you want to be able to switch the protocol, you should use this variant.
///
/// # Arguments
///
/// - `packet`: the packet-like to send
///
/// returns: true if packet was sent, otherwise false
///
/// # Examples
///
/// ```rust
/// let mut connection = servicepoint::Connection::FakeMutableSend;
/// // turn off all pixels on display
/// connection.send_mut(servicepoint::Command::Clear)
/// .expect("send failed");
/// ```
pub fn send_mut(
&mut self,
packet: impl Into<Packet>,
) -> Result<(), SendError> {
match self {
#[cfg(feature = "protocol_websocket")]
Connection::WebSocket(socket) => {
let packet = packet.into();
log::debug!("sending {packet:?}");
let data: Vec<u8> = packet.into();
socket
.send(tungstenite::Message::Binary(data))
.map_err(SendError::WebsocketError)
}
Connection::FakeMutableSend => {
let packet = packet.into();
log::debug!("sending {packet:?}");
let data: Vec<u8> = packet.into();
let _ = data;
Ok(())
}
_ => self.send(packet),
}
}
}
impl Drop for Connection {
fn drop(&mut self) {
#[cfg(feature = "protocol_websocket")]
if let Connection::WebSocket(sock) = self {
_ = sock.close(None);
_ = sock.try_lock().map(move |mut sock| sock.close(None).unwrap() );
}
}
}
@ -227,19 +173,4 @@ mod tests {
let packet = Packet::try_from(data).unwrap();
Connection::Fake.send(packet).unwrap()
}
#[test]
fn send_fake_mutable() {
let data: &[u8] = &[0u8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
let packet = Packet::try_from(data).unwrap();
Connection::FakeMutableSend.send_mut(packet).unwrap()
}
#[test]
#[should_panic]
fn send_fake_mutable_panic() {
let data: &[u8] = &[0u8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
let packet = Packet::try_from(data).unwrap();
Connection::FakeMutableSend.send(packet).unwrap()
}
}