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use std::time::{Duration, Instant};
use async_tungstenite::{WebSocketReceiver, tokio::TokioAdapter, tungstenite::{Error, Message}};
use highly_sendable::{ConnectionMessage, ConnectionStateId};
use libsync::crossbeam_queue::mpmc::array_queue::{Sender, io_channels::{IOClient, IOServer, io_channels}};
use some_more_options::Thing;
use crate::{WebSocketActorOutputMessage, WebSocketReaderActorInputMessage, WebSocketReaderActorOutputMessage};
use act_rs::{ActorFlow, impl_pre_and_post_run_async, impl_pre_run_flow_and_post_run_async};
use pastey::paste;
use tokio::{net::TcpStream, select, task::JoinHandle, time::{error::Elapsed, timeout_at}};
use act_rs_tokio::{impl_task_actor, impl_task_actor_flexible};
use futures::{pin_mut, StreamExt};
//The WebSocketReaderActorState must not modify the connection_state_id unless it gets a new WebSocketReceiver.
pub struct WebSocketReaderActorState
{
io_server: IOServer<ConnectionMessage<WebSocketReaderActorInputMessage>, ConnectionMessage<WebSocketReaderActorOutputMessage>>,
connection_state_id: ConnectionStateId,
web_socket_actor_io_server_sender: Sender<ConnectionMessage<WebSocketActorOutputMessage>>
}
impl WebSocketReaderActorState
{
//write_frame_processor_actor_io_sender: &Sender<ConnectionStateMessage<WebSocketActorOutputMessage>>
pub fn new(web_socket_actor_io_server_sender: Sender<ConnectionMessage<WebSocketActorOutputMessage>>) -> (IOClient<ConnectionMessage<WebSocketReaderActorInputMessage>, ConnectionMessage<WebSocketReaderActorOutputMessage>>, Self)
{
let (io_client, io_server) = io_channels(4, 10);
(io_client,
Self
{
io_server,
connection_state_id: ConnectionStateId::new(),
web_socket_actor_io_server_sender
})
}
pub fn spawn(web_socket_actor_io_server_sender: Sender<ConnectionMessage<WebSocketActorOutputMessage>>) -> IOClient<ConnectionMessage<WebSocketReaderActorInputMessage>, ConnectionMessage<WebSocketReaderActorOutputMessage>>
{
let (io_client, state) = WebSocketReaderActorState::new(web_socket_actor_io_server_sender);
WebSocketReaderActor::spawn(state);
io_client
}
pub async fn run_async(&mut self) -> ActorFlow
{
match self.io_server.input_receiver_ref().recv().await
{
Ok(message) =>
{
self.process_received_input_message(message).await
}
Err(_err) =>
{
ActorFlow::Exit
}
}
//ActorFlow::Proceed
}
impl_pre_run_flow_and_post_run_async!();
async fn process_received_input_message(&mut self, message: ConnectionMessage<WebSocketReaderActorInputMessage>) -> ActorFlow //InternalConnectionResult<WebSocketWriteHalf> //ConnectionStateMessage<WebSocketClientActorInputMessage> //ConnectedOrOther<WebSocketReadHalf> //WebSocketWriterActorInternalMessage //ContinueOrConnected
{
let (id, internal_message) = message.take_id_and_message();
match internal_message
{
WebSocketReaderActorInputMessage::WebSocket(mut reader) =>
{
self.connection_state_id = id;
loop
{
let cl_res = self.connected_loop(reader).await;
match cl_res
{
Thing::Some1(actor_flow) =>
{
return actor_flow;
}
Thing::Some2(new_reader) =>
{
reader = new_reader;
}
}
}
}
//WebSocketReaderActorInputMessage::Disconnecting | WebSocketReaderActorInputMessage::Disconnect | WebSocketReaderActorInputMessage::DisconnectNow =>
WebSocketReaderActorInputMessage::Close | WebSocketReaderActorInputMessage::CloseNow =>
{
ActorFlow::Proceed
}
}
}
async fn connected_loop(&mut self, reader: WebSocketReceiver<TokioAdapter<TcpStream>>) -> Thing<ActorFlow, WebSocketReceiver<TokioAdapter<TcpStream>>>
{
//let mut async_reader = reader.into_future();
pin_mut!(reader);
loop
{
let wsa_future = self.io_server.input_receiver_ref().recv();
let read_next_future = reader.next();
//Result from the WebSocketActor, WebSocket reader result
let select_result: Thing<Result<ConnectionMessage<WebSocketReaderActorInputMessage>, ()>, Option<Result<Message, Error>>>;
select!
{
biased;
res = wsa_future =>
{
//This select invocation is biased so that the actor will disconnect or change connection when told.
select_result = Thing::Some1(res);
}
res = read_next_future =>
{
//Read from WebSocketReadHalf or FragmentCollectorRead.
select_result = Thing::Some2(res);
}
else =>
{
//println!("ReadWebSocketActor: The input receiver has definitely closed in this case.");
//The input receiver has definitely closed in this case.
return Thing::Some1(ActorFlow::Exit);
}
}
match select_result
{
Thing::Some1(wsa_res) =>
{
match wsa_res
{
Ok(message) =>
{
let (id, internal_message) = message.take_id_and_message();
self.connection_state_id = id;
match internal_message
{
WebSocketReaderActorInputMessage::WebSocket(web_socket_receiver) =>
{
//self.connection_state_id = id;
return Thing::Some2(web_socket_receiver);
}
//WebSocketReaderActorInputMessage::Disconnecting => todo!(),
WebSocketReaderActorInputMessage::Close =>
{
//Close loop
return self.closing_loop(&mut reader).await;
}
//WebSocketReaderActorInputMessage::DisconnectNow => todo!(),
WebSocketReaderActorInputMessage::CloseNow =>
{
return Thing::Some1(ActorFlow::Proceed);
}
}
}
Err(_) =>
{
return Thing::Some1(ActorFlow::Exit);
}
}
}
Thing::Some2(opt_message_result) =>
{
if let Some(res) = opt_message_result
{
match res
{
Ok(message) =>
{
let is_close = message.is_close();
let new_message = self.connection_state_id.connection_message(WebSocketActorOutputMessage::Message(message));
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
if is_close
{
//I think the close frame gets auto-sent, so might as well say were done and wait for the next connection.
/*
if let Err(_) = self.io_server.output_sender_ref().send(self.connection_state_id.next().connection_message(WebSocketReaderActorOutputMessage::Closed)).await
{
return Thing::Some1(ActorFlow::Exit);
}
*/
self.closing_loop(&mut reader).await;
//return Thing::Some1(ActorFlow::Proceed);
}
}
Err(err) =>
{
let id = self.connection_state_id; //.next();
let new_message = id.connection_message(WebSocketActorOutputMessage::ConnectionError(err));
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
//Let the writer know that we're now closed.
if let Err(_) = self.io_server.output_sender_ref().send(id.connection_message(WebSocketReaderActorOutputMessage::Closed)).await
{
return Thing::Some1(ActorFlow::Exit);
}
return Thing::Some1(ActorFlow::Proceed);
}
}
}
//Continue until told not to?
}
}
}
}
async fn closing_loop(&mut self, reader: &mut WebSocketReceiver<TokioAdapter<TcpStream>>) -> Thing<ActorFlow, WebSocketReceiver<TokioAdapter<TcpStream>>>
{
let new_message = self.connection_state_id.connection_message(WebSocketReaderActorOutputMessage::Closing);
if let Err(_) = self.io_server.output_sender_ref().send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
//The reader WebSocketReceiver should already have been pinned.
//let mut start_instant = Instant::now();
//let mut time_remaining = Duration::from_secs(5);
//https://doc.rust-lang.org/std/time/struct.Instant.html
let soon;
let opt_soon = Instant::now().checked_add(Duration::from_secs(5));
if let Some(val) = opt_soon
{
soon = val;
}
else
{
//Notify error
let res = timeout_at(Instant::now().into(),reader.next()).await;
match res
{
Ok(val) =>
{
match val
{
Some(val_res) =>
{
match val_res
{
Ok(message) =>
{
let new_message = self.connection_state_id.connection_message(WebSocketActorOutputMessage::Message(message));
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
}
Err(err) =>
{
let new_message = self.connection_state_id.connection_message(WebSocketActorOutputMessage::ConnectionError(err));
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
let new_message = self.connection_state_id.connection_message(WebSocketActorOutputMessage::Closed);
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
}
}
}
None =>
{
let new_message = self.connection_state_id.connection_message(WebSocketActorOutputMessage::Closed);
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
}
}
//return Thing::Some1(ActorFlow::Proceed);
}
Err(_err) =>
{
let new_message = self.connection_state_id.connection_message(WebSocketActorOutputMessage::ClosureWindowElapsed);
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
let new_message = self.connection_state_id.connection_message(WebSocketActorOutputMessage::Closed);
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
}
}
return Thing::Some1(ActorFlow::Proceed);
}
loop
{
if soon >= Instant::now()
{
let new_message = self.connection_state_id.connection_message(WebSocketActorOutputMessage::ClosureWindowElapsed);
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
return Thing::Some1(ActorFlow::Proceed);
}
let wsa_future = timeout_at(soon.into(), self.io_server.input_receiver_ref().recv());
let read_next_future = timeout_at(soon.into(), reader.next());
let select_result: Thing<Result<Result<ConnectionMessage<WebSocketReaderActorInputMessage>, ()>, Elapsed>, Result<Option<Result<Message, Error>>, Elapsed>>;
select!
{
biased;
res = wsa_future =>
{
//This select invocation is biased so that the actor will disconnect or change connection when told.
select_result = Thing::Some1(res);
}
res = read_next_future =>
{
//Read from WebSocketReadHalf or FragmentCollectorRead.
select_result = Thing::Some2(res);
}
else =>
{
//println!("ReadWebSocketActor: The input receiver has definitely closed in this case.");
//The input receiver has definitely closed in this case.
return Thing::Some1(ActorFlow::Exit);
}
}
match select_result
{
Thing::Some1(timeout_wsa_res) =>
{
match timeout_wsa_res
{
Ok(wsa_res) =>
{
match wsa_res
{
Ok(message) =>
{
let (id, internal_message) = message.take_id_and_message();
self.connection_state_id = id;
match internal_message
{
WebSocketReaderActorInputMessage::WebSocket(web_socket_receiver) =>
{
//self.connection_state_id = id;
return Thing::Some2(web_socket_receiver);
}
//WebSocketReaderActorInputMessage::Disconnecting => todo!(),
WebSocketReaderActorInputMessage::Close =>
{
continue;
}
WebSocketReaderActorInputMessage::CloseNow =>
{
return Thing::Some1(ActorFlow::Proceed);
}
}
}
Err(_) =>
{
return Thing::Some1(ActorFlow::Exit);
}
}
}
Err(_err) =>
{
let new_message = self.connection_state_id.connection_message(WebSocketActorOutputMessage::ClosureWindowElapsed);
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
let new_message = self.connection_state_id.connection_message(WebSocketActorOutputMessage::Closed);
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
return Thing::Some1(ActorFlow::Proceed);
}
}
}
Thing::Some2(timeout_opt_message_result) =>
{
match timeout_opt_message_result
{
Ok(opt_message_result) =>
{
if let Some(res) = opt_message_result
{
match res
{
Ok(message) =>
{
let is_close = message.is_close();
let new_message = self.connection_state_id.connection_message(WebSocketActorOutputMessage::Message(message));
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
if is_close
{
let id = self.connection_state_id; //.next();
//let new_message = id.connection_message(WebSocketActorOutputMessage::Closed);
//Notify the WebSocketActor that the conection is closed
let new_message = id.connection_message(WebSocketReaderActorOutputMessage::Closed);
if let Err(_) = self.io_server.output_sender_ref().send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
return Thing::Some1(ActorFlow::Proceed);
}
}
Err(err) =>
{
let new_message = self.connection_state_id.next().connection_message(WebSocketActorOutputMessage::ConnectionError(err));
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
return Thing::Some1(ActorFlow::Proceed);
}
}
}
else
{
let new_message = self.connection_state_id.next().connection_message(WebSocketReaderActorOutputMessage::Closed);
if let Err(_) = self.io_server.output_sender_ref().send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
return Thing::Some1(ActorFlow::Proceed);
}
}
Err(_err) =>
{
let new_message = self.connection_state_id.next().connection_message(WebSocketActorOutputMessage::ClosureWindowElapsed);
if let Err(_) = self.web_socket_actor_io_server_sender.send(new_message).await
{
return Thing::Some1(ActorFlow::Exit);
}
return Thing::Some1(ActorFlow::Proceed);
}
}
}
}
}
}
}
impl_task_actor_flexible!(WebSocketReaderActor);