feat: implemented leave workspace and list buffer users, various fixes

Cargo.toml

@@ -10,7 +10,7 @@ name = "codemp"
 # core
 tracing = "0.1"
 # woot
-codemp-woot = { git = "ssh://git@github.com/codewithotherpeopleandchangenamelater/woot.git", features = ["serde"], tag = "v0.1.0", optional = true }
+codemp-woot = { git = "ssh://git@github.com/codewithotherpeopleandchangenamelater/woot.git", features = ["serde"], tag = "v0.1.1", optional = true }
 # proto
 tonic = { version = "0.9", features = ["tls", "tls-roots"], optional = true }
 prost = { version = "0.11.8", optional = true }

proto/files.proto

@@ -14,4 +14,4 @@ message BufferTree {
 message WorkspaceFileTree {
 	// list of strings may be more efficient but it's a lot more hassle
 	required string payload = 1; // spappolata di json
-} //Alla fine non si usa questo per ora ma BufferTree
+}

proto/user.proto

@@ -6,5 +6,5 @@ package user;
 // payload identifying user
 message UserIdentity {
 	// user identifier
-	required string id = 1;
+	required bytes id = 1; //since uuid is 8 bytes we prefer to just send the raw bytes instead of string
 }

proto/workspace.proto

@@ -20,8 +20,8 @@ message WorkspaceMessage {
 }
 
 message JoinRequest {
-	required string username=1;
+	required string username = 1;
-	required string password=2;
+	required string password = 2;
 }
 
 message AttachRequest {
@@ -67,6 +67,6 @@ message UserList {
 	repeated user.UserIdentity users = 1;
 }
 
-message WorkspaceDetails{
+message WorkspaceDetails {
-	required int32 id=1;
+	required string id = 1;
 }

proto/workspace_service.proto

@@ -1,27 +1,3 @@
-// Workspace effimero: sta in /tmp o proprio in memoria
-// Workspace e` autenticato: come si decide mentre si rifa il server
-// Workspace ha id univoco (stringa), usato per connettercisi
-// Workspace implementera` access control:
-//   * accedere al workspace
-//   * i singoli buffer
-//   - i metadati maybe????
-// Workspace offre le seguenti features:
-//  * listare i buffer DONE
-//  * listare gli user connessi DONE
-//  * creare buffers DONE REPLACE THE ONE ON buffer.proto
-//  * NO ATTACH: responsabilita` del buffer service
-//  * contiene metadata dei buffers:
-//    * path
-//    * data creazione
-// Buffer id NON E` il path DONE
-// BufferService NON ha metadata:
-// Workspace tiene traccia di utenti attached (nel futuro) DONE
-
-
-
-
-
-
 syntax = "proto2";
 
 package workspace_service;
@@ -29,11 +5,8 @@ import "user.proto";
 import "files.proto";
 import "workspace.proto";
 
-
-
 service Workspace {
 
-
 	rpc Attach (workspace.AttachRequest) returns (workspace.Token);
 
 	rpc LeaveWorkspace (workspace.WorkspaceDetails) returns (workspace.Empty);
@@ -46,13 +19,10 @@ service Workspace {
 
 	rpc ListUsers (workspace.UserListRequest) returns (workspace.UserList);
 
-	rpc ListBufferUsers (workspace.BufferPayload) returns (workspace.Empty);
+	rpc ListBufferUsers (workspace.BufferPayload) returns (workspace.UserList); //TODO discuss
 
 	rpc Join (workspace.JoinRequest) returns (workspace.Token);
 
 	rpc Delete (workspace.BufferPayload) returns (workspace.Empty); //deletes buffer
 
-
 }
-
-

src/api/change.rs

@@ -84,11 +84,11 @@ impl TextChange {
 
 	/// convert from byte index to row and column
 	/// txt must be the whole content of the buffer, in order to count lines
-	pub fn index_to_rowcol(txt: &str, index: usize) -> crate::proto::RowCol {
+	pub fn index_to_rowcol(txt: &str, index: usize) -> RowCol {
 		// FIXME might panic, use .get()
 		let row = txt[..index].matches('\n').count() as i32;
 		let col = txt[..index].split('\n').last().unwrap_or("").len() as i32;
-		crate::proto::RowCol { row, col }
+		RowCol { row, col }
 	}
 }
 

src/buffer/worker.rs

@@ -63,7 +63,7 @@ impl BufferWorker {
 }
 
 #[async_trait]
-impl ControllerWorker<TextChange> for BufferControllerWorker {
+impl ControllerWorker<TextChange> for BufferWorker {
 	type Controller = BufferController;
 	type Tx = mpsc::Sender<Operation>;
 	type Rx = Streaming<Operation>;

src/client.rs

@@ -4,7 +4,8 @@
 
 use std::collections::BTreeMap;
 use std::sync::Arc;
-use tokio::sync::mpsc;
+
+use tokio::sync::{mpsc, RwLock};
 use tonic::service::interceptor::InterceptedService;
 use tonic::service::Interceptor;
 use tonic::transport::{Channel, Endpoint};
@@ -14,7 +15,7 @@ use crate::api::controller::ControllerWorker;
 use crate::cursor::worker::CursorWorker;
 use crate::proto::buffer_service::buffer_client::BufferClient;
 use crate::proto::cursor_service::cursor_client::CursorClient;
-use crate::proto::workspace::{JoinRequest, Token};
+use crate::proto::workspace::{JoinRequest, Token, WorkspaceDetails};
 use crate::proto::workspace_service::workspace_client::WorkspaceClient;
 use crate::workspace::Workspace;
 
@@ -26,7 +27,7 @@ use crate::workspace::Workspace;
 pub struct Client {
 	user_id: Uuid,
 	token_tx: Arc<tokio::sync::watch::Sender<Token>>,
-	pub workspaces: BTreeMap<String, Workspace>,
+	pub workspaces: BTreeMap<String, Arc<RwLock<Workspace>>>,
 	services: Arc<Services>
 }
 
@@ -62,7 +63,7 @@ fn parse_codemp_connection_string<'a>(string: &'a str) -> (String, String) {
 
 impl Client {
 	/// instantiate and connect a new client
-	pub async fn new(dest: &str) -> crate::Result<Self> { //TODO interceptor
+	pub async fn new(dest: &str) -> crate::Result<Self> {
 		let (_host, _workspace_id) = parse_codemp_connection_string(dest);
 
 		let channel = Endpoint::from_shared(dest.to_string())?
@@ -89,11 +90,18 @@ impl Client {
 		})
 	}
 
-	/// join a workspace, starting a cursorcontroller and returning a new reference to it
+	/// creates a new workspace (and joins it implicitly), returns an [tokio::sync::RwLock] to interact with it
-	///
+	pub async fn create_workspace(&mut self, workspace_id: &str) -> crate::Result<Arc<RwLock<Workspace>>> {
-	/// to interact with such workspace [crate::api::Controller::send] cursor events or
+		let mut workspace_client = self.services.workspace.clone();
-	/// [crate::api::Controller::recv] for events on the associated [crate::cursor::Controller].
+		workspace_client.create_workspace(
-	pub async fn join(&mut self, workspace_id: &str) -> crate::Result<()> {
+			tonic::Request::new(WorkspaceDetails { id: workspace_id.to_string() })
+		).await?;
+
+		self.join_workspace(workspace_id).await
+	}
+
+	/// join a workspace, returns an [tokio::sync::RwLock] to interact with it
+	pub async fn join_workspace(&mut self, workspace_id: &str) -> crate::Result<Arc<RwLock<Workspace>>> {
 		self.token_tx.send(self.services.workspace.clone().join(
 			tonic::Request::new(JoinRequest { username: "".to_string(), password: "".to_string() }) //TODO
 		).await?.into_inner())?;
@@ -112,17 +120,32 @@ impl Client {
 			tracing::debug!("controller worker stopped");
 		});
 
-		self.workspaces.insert(workspace_id.to_string(), Workspace::new(
+		let lock = Arc::new(RwLock::new(
-			workspace_id.to_string(),
+			Workspace::new(
-			self.user_id,
+				workspace_id.to_string(),
-			self.token_tx.clone(),
+				self.user_id,
-			controller,
+				self.token_tx.clone(),
-			self.services.clone()
+				controller,
-		).await?);
+				self.services.clone()
+			).await?
+		));
+
+		self.workspaces.insert(workspace_id.to_string(), lock.clone());
+
+		Ok(lock)
+	}
+
+	/// leave given workspace, disconnecting buffer and cursor controllers
+	pub async fn leave_workspace(&self, workspace_id: &str) -> crate::Result<()> {
+		let mut workspace_client = self.services.workspace.clone();
+		workspace_client.leave_workspace(
+			tonic::Request::new(WorkspaceDetails { id: workspace_id.to_string() })
+		).await?;
 		
 		Ok(())
 	}
 
+	/// accessor for user id
 	pub fn user_id(&self) -> Uuid {
 		self.user_id.clone()
 	}

src/cursor/controller.rs

@@ -57,7 +57,7 @@ impl Controller<CursorEvent> for CursorController {
 			std::mem::swap(&mut cursor.start, &mut cursor.end);
 		}
 		Ok(self.op.send(CursorEvent {
-			user: UserIdentity { id: self.user_id.to_string() },
+			user: UserIdentity { id: self.user_id.as_bytes().to_vec() },
 			position: cursor,
 		})?)
 	}

src/cursor/worker.rs

@@ -39,7 +39,7 @@ impl CursorWorker {
 }
 
 #[async_trait]
-impl ControllerWorker<CursorEvent> for CursorControllerWorker {
+impl ControllerWorker<CursorEvent> for CursorWorker {
 	type Controller = CursorController;
 	type Tx = mpsc::Sender<CursorEvent>;
 	type Rx = Streaming<CursorEvent>;
@@ -58,7 +58,7 @@ impl ControllerWorker<CursorEvent> for CursorControllerWorker {
 		loop {
 			tokio::select!{
 				Ok(Some(cur)) = rx.message() => {
-					if cur.user.id == self.user_id.to_string() { continue }
+					if Uuid::from(cur.user.clone()) == self.user_id { continue }
 					self.channel.send(cur.clone()).unwrap_or_warn("could not broadcast event");
 					self.changed.send(cur).unwrap_or_warn("could not update last event");
 				},

src/workspace.rs

@@ -1,4 +1,4 @@
-use std::{collections::{BTreeMap, BTreeSet}, str::FromStr, sync::Arc};
+use std::{collections::{BTreeMap, BTreeSet}, sync::Arc};
 use tokio::sync::mpsc;
 use uuid::Uuid;
 use crate::{
@@ -25,13 +25,11 @@ impl From<Uuid> for UserInfo {
 
 impl From<UserIdentity> for Uuid {
 	fn from(uid: UserIdentity) -> Uuid {
-		Uuid::from_str(&uid.id).expect("expected an uuid")
+		let b: [u8; 16] = uid.id.try_into().expect("expected an uuid");
+		Uuid::from_bytes(b)
 	}
 }
 
-/// list_users -> A() , B()
-/// get_user_info(B) -> B(cacca, pipu@piu)
-
 pub struct Workspace {
 	id: String,
 	user_id: Uuid,
@@ -68,10 +66,10 @@ impl Workspace {
 		Ok(ws)
 	}
 
-	/// create a new buffer in current workspace, with optional given content
+	/// create a new buffer in current workspace
 	pub async fn create(&mut self, path: &str) -> crate::Result<()> {
 		let mut workspace_client = self.services.workspace.clone();
-		workspace_client.create(
+		workspace_client.create_buffer(
 			tonic::Request::new(BufferPayload { path: path.to_string() })
 		).await?;
 
@@ -110,6 +108,7 @@ impl Workspace {
 		Ok(controller)
 	}
 
+	/// fetch a list of all buffers in a workspace
 	pub async fn fetch_buffers(&mut self) -> crate::Result<()> {
 		let mut workspace_client = self.services.workspace.clone();
 		let buffers = workspace_client.list_buffers(
@@ -124,6 +123,7 @@ impl Workspace {
 		Ok(())
 	}
 
+	/// fetch a list of all users in a workspace
 	pub async fn fetch_users(&mut self) -> crate::Result<()> {
 		let mut workspace_client = self.services.workspace.clone();
 		let users = BTreeSet::from_iter(workspace_client.list_users(
@@ -141,10 +141,27 @@ impl Workspace {
 		Ok(())
 	}
 
-	pub async fn list_buffer_users() {
+	/// get a list of the users attached to a specific buffer
-		todo!(); //TODO what is this
+	/// 
+	/// TODO: discuss implementation details
+	pub async fn list_buffer_users(&mut self, path: &str) -> crate::Result<Vec<UserIdentity>> {
+		let mut workspace_client = self.services.workspace.clone();
+		let buffer_users = workspace_client.list_buffer_users(
+			tonic::Request::new(BufferPayload { path: path.to_string() })
+		).await?.into_inner().users;
+
+		Ok(buffer_users)
 	}
 	
+	/// detach from a specific buffer, returns false if there
+	pub fn detach(&mut self, path: &str) -> bool {
+		match &mut self.buffers.remove(path) {
+			None => false,	
+			Some(_) => true
+		}
+	}
+
+	/// delete a buffer
 	pub async fn delete(&mut self, path: &str) -> crate::Result<()> {
 		let mut workspace_client = self.services.workspace.clone();
 		workspace_client.delete(
@@ -156,60 +173,13 @@ impl Workspace {
 		Ok(())
 	}
 
-	/// leave current workspace if in one, disconnecting buffer and cursor controllers
-	pub fn leave_workspace(&self) {
-		todo!(); //TODO need proto
-	}
-	
-	/// disconnect from a specific buffer
-	pub fn disconnect_buffer(&mut self, path: &str) -> bool {
-		match &mut self.buffers.remove(path) {
-			None => false,
-			Some(_) => true
-		}
-	}
-
 	pub fn id(&self) -> String { self.id.clone() }
 
+	/// return a reference to current cursor controller, if currently in a workspace
+	pub fn cursor(&self) -> Arc<cursor::Controller> { self.cursor.clone() }
+
 	/// get a new reference to a buffer controller, if any is active to given path
 	pub fn buffer_by_name(&self, path: &str) -> Option<Arc<buffer::Controller>> {
 		self.buffers.get(path).cloned()
 	}
-
-	/// return a reference to current cursor controller, if currently in a workspace
-	pub fn cursor(&self) -> Arc<cursor::Controller> { self.cursor.clone() }
-
 }
-
-/*
-impl Interceptor for Workspace { //TODO
-	fn call(&mut self, mut request: tonic::Request<()>) -> Result<tonic::Request<()>, tonic::Status> {
-		request.metadata_mut().insert("auth", self.token.token.parse().unwrap());
-		Ok(request)
-	}
-}
-
-#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
-pub enum FSNode {
-	File(String),
-	Directory(String, Vec<FSNode>),
-}
-	fn file_tree_rec(path: &str, root: &mut Vec<FSNode>) {
-		if let Some(idx) = path.find("/") {
-			let dir = path[..idx].to_string();
-			let mut dir_node = vec![];
-			Self::file_tree_rec(&path[idx..], &mut dir_node);
-			root.push(FSNode::Directory(dir, dir_node));
-		} else {
-			root.push(FSNode::File(path.to_string()));
-		}
-	}
-	
-	fn file_tree(&self) -> Vec<FSNode> {
-		let mut root = vec![];
-		for path in &self.filetree {
-			Self::file_tree_rec(&path, &mut root);	
-		}
-		root
-	}
-*/