Event polling

not optimal but its tomorrow

client/src/app.rs

@@ -1,10 +1,14 @@
+use std::time::Duration;
 use tarpc::context;
 use tarpc::tokio_serde::formats::Json;
 use tokio::sync::broadcast;
 use tokio::sync::broadcast::{Receiver, Sender};
+use tokio::task::JoinHandle;
+use tokio::time::sleep;
 use tracing::log::*;
 use realm_auth::types::RealmAuthClient;
-use realm_server::types::{RealmChatClient, Room, User};
+use realm_server::events::Event;
+use realm_server::types::{RealmChatClient, Room};
 use realm_shared::stoken;
 use realm_shared::types::ErrorCode::*;
 use realm_shared::types::ErrorCode;
@@ -95,7 +99,12 @@ pub struct RealmApp {
 	#[serde(skip)]
 	pub delete_room_channel: (Sender<Result<CServer, ErrorCode>>, Receiver<Result<CServer, ErrorCode>>),
 	#[serde(skip)]
-	pub room_changes_channel: (Sender<Result<(CServer, Vec<Room>), ErrorCode>>, Receiver<Result<(CServer, Vec<Room>), ErrorCode>>)
+	pub room_changes_channel: (Sender<Result<(CServer, Vec<Room>), ErrorCode>>, Receiver<Result<(CServer, Vec<Room>), ErrorCode>>),
+
+	#[serde(skip)]
+	pub event_channel: (Sender<(String, (u32, Event))>, Receiver<(String, (u32, Event))>),
+	#[serde(skip)]
+	pub polling_threads: Vec<(String, JoinHandle<()>)>,
 }
 
 impl Default for RealmApp {
@@ -142,6 +151,8 @@ impl Default for RealmApp {
 			add_room_channel: broadcast::channel(256),
 			delete_room_channel: broadcast::channel(256),
 			room_changes_channel: broadcast::channel(256),
+			event_channel: broadcast::channel(256),
+			polling_threads: Vec::new(),
 		}
 	}
 }
@@ -237,6 +248,8 @@ pub fn fetch_server_data(channel: Sender<Result<CServer, ErrorCode>>, addresses:
 				port,
 				is_admin,
 				is_owner,
+				last_event_index: 0,
+				messages: Vec::new(),
 				rooms,
 			})).unwrap();
 		});
@@ -535,6 +548,71 @@ impl eframe::App for RealmApp {
 			}
 		}
 		
+		// Polling events
+		while let Ok((serverid, (index, event))) = self.event_channel.1.try_recv() {
+			if let Some(active_servers) = &mut self.active_servers {
+				for server in active_servers {
+					if server.server_id.eq(&serverid) {
+						match event.clone() {
+							Event::NewMessage(message) => {
+								server.messages.push(message);
+							}
+							Event::NewRoom(room) => {
+								server.rooms.push(room);
+							}
+							Event::DeleteRoom(roomid) => {
+								server.rooms.retain(|r| !r.roomid.eq(&roomid));
+							}
+						}
+						server.last_event_index = index;
+					}
+				}
+			}
+		}
+		
+		// Manage polling threads
+		if let Some(active_servers) = &mut self.active_servers {
+			if self.polling_threads.len() != active_servers.len() {
+				let running_thread_serverids = self.polling_threads.iter().map(|t| t.0.clone()).collect::<Vec<String>>();
+				let missing_servers = active_servers.clone().into_iter().filter(|s| !running_thread_serverids.contains(&s.server_id)).collect::<Vec<CServer>>();
+				for server in missing_servers {
+					let send_channel = self.event_channel.0.clone();
+					let _handle = tokio::spawn(async move {
+						loop {
+							let mut transport = tarpc::serde_transport::tcp::connect(format!("{}:{}", server.domain, server.port), Json::default);
+							transport.config_mut().max_frame_length(usize::MAX);
+
+							let result = transport.await;
+							let connection = match result {
+								Ok(connection) => connection,
+								Err(_) => {
+									break;
+								}
+							};
+
+							let client = RealmChatClient::new(tarpc::client::Config::default(), connection).spawn();
+							
+							let result = client.poll_events_since(
+								context::current(),
+								server.last_event_index
+							).await;
+							
+							match result {
+								Ok(events) => {
+									for event in events {
+										send_channel.send((server.server_id.clone(), (event.0, event.1))).unwrap();
+									}
+								}
+								Err(_) => break,
+							}
+
+							sleep(Duration::from_millis(100)).await;
+						}
+					});
+				}
+			}
+		}
+
 		// File -> Quit
 		gui::top_panel(self, ctx);
 

client/src/types.rs

@@ -1,4 +1,4 @@
-use realm_server::types::{RealmChatClient, Room};
+use realm_server::types::{Message, RealmChatClient, Room};
 
 #[derive(Clone, Debug, serde::Deserialize, serde::Serialize)]
 pub struct CUser {
@@ -19,5 +19,7 @@ pub struct CServer {
 	pub port: u16,
 	pub is_admin: bool,
 	pub is_owner: bool,
-	pub rooms: Vec<Room>
+	pub rooms: Vec<Room>,
+	pub last_event_index: u32,
+	pub messages: Vec<Message>,
 }

server/src/events.rs

@@ -1,64 +1,14 @@
-// use durian::bincode_packet;
-// use crate::types::{Message, Room, User};
-// 
-// #[bincode_packet]
-// pub struct Greet {
-// 	pub id: u32
-// }
-// 
-// #[bincode_packet]
-// pub struct UserJoinedEvent {
-// 	pub user: User,
-// }
-// 
-// #[bincode_packet]
-// pub struct UserLeftEvent {
-// 	pub user: User,
-// }
-// 
-// #[bincode_packet]
-// pub struct NewMessageEvent {
-// 	pub message: Message,
-// }
-// 
-// // #[bincode_packet]
-// // pub struct StartTypingEvent {
-// // 	pub user: User,
-// // 	pub room: String,
-// // }
-// // 
-// // #[bincode_packet]
-// // pub struct StopTypingEvent {
-// // 	pub user: User,
-// // 	pub room: String,
-// // }
-// 
-// #[bincode_packet]
-// pub struct NewRoomEvent {
-// 	pub room: Room,
-// }
-// 
-// #[bincode_packet]
-// pub struct DeleteRoomEvent {
-// 	pub roomid: String,
-// }
-// 
-// #[bincode_packet]
-// pub struct KickedUserEvent {
-// 	pub userid: String, 
-// }
-// 
-// #[bincode_packet]
-// pub struct BannedUserEvent {
-// 	pub userid: String,
-// }
-// 
-// #[bincode_packet]
-// pub struct PromotedUserEvent {
-// 	pub userid: String,
-// }
-// 
-// #[bincode_packet]
-// pub struct DemotedUserEvent {
-// 	pub userid: String,
-// }
+use crate::types::{Message, Room, User};
+
+#[derive(Clone, Debug, serde::Serialize, serde::Deserialize)]
+pub enum Event {
+	// UserJoined(User),
+	// UserLeft(User),
+	NewMessage(Message),
+	NewRoom(Room),
+	DeleteRoom(String),
+	// KickedUser(KickedUser),
+	// BannedUser(BannedUser),
+	// PromotedUser(PromotedUser),
+	// DemotedUser(DemotedUser),
+}

server/src/server.rs

@@ -25,6 +25,7 @@ pub struct RealmChatServer {
 	pub db_pool: Pool<Sqlite>,
 	pub typing_users: Vec<(String, String)>, //NOTE: user.userid, room.roomid
 	pub cache: Cache<String, String>,
+	pub events: Vec<(u32, Event)>,
 }
 
 const FETCH_MESSAGE: &str = "SELECT message.*,
@@ -46,6 +47,7 @@ impl RealmChatServer {
 				.time_to_idle(Duration::from_secs(5*60))
 				.time_to_live(Duration::from_secs(60*60))
 				.build(),
+			events: Vec::new(),
 		}
 	}
 	
@@ -217,6 +219,18 @@ impl RealmChat for RealmChatServer {
 		self.internal_is_user_owner(&userid).await
 	}
 
+	async fn poll_events_since(self, _: Context, index: u32) -> Vec<(u32, Event)> {
+		let mut events_to_send = Vec::new();
+		
+		for (i, event) in self.events {
+			if i > index {
+				events_to_send.push((i, event));
+			}
+		}
+		
+		events_to_send
+	}
+
 	async fn join_server(self, _: Context, stoken: String, userid: String) -> Result<User, ErrorCode> {
 		if !self.is_stoken_valid(&userid, &stoken).await {
 			return Err(Unauthorized)

server/src/types.rs

@@ -4,7 +4,7 @@ use sqlx::sqlite::SqliteRow;
 use tarpc::serde::{Deserialize, Serialize};
 
 use realm_shared::types::ErrorCode;
-
+use crate::events::Event;
 use crate::types::MessageData::*;
 
 #[tarpc::service]
@@ -14,7 +14,7 @@ pub trait RealmChat {
 	async fn get_info() -> ServerInfo;
 	async fn is_user_admin(stoken: String) -> bool;
 	async fn is_user_owner(stoken: String) -> bool;
-	
+	async fn poll_events_since(index: u32) -> Vec<(u32, Event)>;
 	async fn join_server(stoken: String, userid: String) -> Result<User, ErrorCode>;
 	async fn leave_server(stoken: String, userid: String) -> Result<(), ErrorCode>;