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feat: added tracing, added buffer_worker

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This commit is contained in:
əlemi 2022-07-30 03:02:38 +02:00
parent 60e6f4640c
commit 2287793cd9
2 changed files with 130 additions and 69 deletions
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2
Cargo.toml
View file

@ -16,6 +16,8 @@ name = "codemp-client"
path = "src/client/main.rs"
[dependencies]
tracing = "0.1"
tracing-subscriber = "0.3"
tonic = "0.7"
prost = "0.10"
futures = "0.3"

197
src/server/main.rs
View file

@ -1,6 +1,11 @@
use std::{collections::HashMap, pin::Pin, sync::Arc};
use std::collections::VecDeque;
use std::{pin::Pin, sync::Arc};
use state::AlterState;
use tokio_stream::wrappers::ReceiverStream;
use tracing::{info, debug, warn, error};
use operational_transform::OperationSeq;
use state::{AlterState, StateManager};
use tonic::{transport::Server, Request, Response, Status};
pub mod proto {
@ -8,24 +13,71 @@ pub mod proto {
tonic::include_proto!("buffer");
}
use tokio::sync::{mpsc, watch};
use tokio_stream::{wrappers::ReceiverStream, Stream, StreamExt}; // TODO example used this?
use tokio::sync::{mpsc, broadcast};
use tokio_stream::{Stream, StreamExt}; // TODO example used this?
use proto::buffer_server::{Buffer, BufferServer};
use proto::workspace_server::{Workspace, WorkspaceServer};
use proto::{Operation, SessionRequest, SessionResponse};
use tonic::Streaming;
use workspace::BufferView;
//use futures::{Stream, StreamExt};
use crate::workspace::Workspace as WorkspaceInstance; // TODO fuck!
use crate::workspace::Workspace as WorkspaceInstance; // TODO fuck x2!
pub mod state;
pub mod workspace;
type OperationStream = Pin<Box<dyn Stream<Item = Result<Operation, Status>> + Send>>;
pub struct BufferService {}
pub struct BufferService {
state: Arc<StateManager>,
}
fn op_seq(o: &Operation) -> OperationSeq { todo!() }
fn op_net(o: &OperationSeq) -> Operation { todo!() }
// async fn buffer_worker(tx: mpsc::Sender<Result<Operation, Status>>, mut rx:Streaming<Operation>, mut rx_core: mpsc::Receiver<Operation>) {
async fn buffer_worker(bv: BufferView, mut client_rx: Streaming<Operation>, tx_client:mpsc::Sender<Result<Operation, Status>>, mut rx_core:broadcast::Receiver<(String, OperationSeq)>) {
let mut queue : VecDeque<Operation> = VecDeque::new();
loop {
tokio::select! {
client_op = client_rx.next() => {
if let Some(result) = client_op {
match result {
Ok(op) => {
bv.op(op_seq(&op)).await.unwrap(); // TODO make OpSeq from network Operation pkt!
queue.push_back(op);
},
Err(status) => {
error!("error receiving op from client: {:?}", status);
break;
}
}
}
},
server_op = rx_core.recv() => {
if let Ok(oop) = server_op {
let mut send_op = true;
for (i, _op) in queue.iter().enumerate() {
if true { // TODO must compare underlying OperationSeq here! (op.equals(server_op))
queue.remove(i);
send_op = false;
break;
} else {
// serv_op.transform(op); // TODO transform OpSeq !
}
}
if send_op {
tx_client.send(Ok(op_net(&oop.1))).await.unwrap();
}
}
}
}
}
}
#[tonic::async_trait]
impl Buffer for BufferService {
@ -36,61 +88,42 @@ impl Buffer for BufferService {
&self,
req: Request<Streaming<Operation>>,
) -> Result<tonic::Response<OperationStream>, Status> {
println!("EchoServer::bidirectional_streaming_echo");
let session_id : String;
if let Some(sid) = req.metadata().get("session_id") {
session_id = sid.to_str().unwrap().to_string();
} else {
return Err(Status::failed_precondition("Missing metadata key 'session_id'"));
}
let mut in_stream = req.into_inner();
let (tx_og, rx) = mpsc::channel(128);
let path : String;
if let Some(p) = req.metadata().get("path") {
path = p.to_str().unwrap().to_string();
} else {
return Err(Status::failed_precondition("Missing metadata key 'path'"));
}
// TODO make these above nicer? more concise? idk
// this spawn here is required if you want to handle connection error.
// If we just map `in_stream` and write it back as `out_stream` the `out_stream`
// will be drooped when connection error occurs and error will never be propagated
// to mapped version of `in_stream`.
let tx = tx_og.clone();
tokio::spawn(async move {
while let Some(result) = in_stream.next().await {
match result {
Ok(v) => tx
.send(Ok(Operation {
action: 1,
row: 0,
column: 0,
op_id: 0,
text: None,
}))
.await
.expect("working rx"),
Err(err) => {
// if let Some(io_err) = match_for_io_error(&err) {
// if io_err.kind() == ErrorKind::BrokenPipe {
// // here you can handle special case when client
// // disconnected in unexpected way
// eprintln!("\tclient disconnected: broken pipe");
// break;
// }
// }
eprintln!("Error receiving operation from client");
if let Some(workspace) = self.state.workspaces.borrow().get(&session_id) {
let in_stream = req.into_inner();
let (tx_og, rx) = mpsc::channel::<Result<Operation, Status>>(128);
match tx.send(Err(err)).await {
Ok(_) => (),
Err(_err) => break, // response was droped
}
}
}
}
println!("\tstream ended");
});
let b: BufferView = workspace.buffers.borrow().get(&path).unwrap().clone();
let w = workspace.clone();
tokio::spawn(async move { buffer_worker(b, in_stream, tx_og, w.bus.subscribe()).await; });
// echo just write the same data that was received
let out_stream = ReceiverStream::new(rx);
// echo just write the same data that was received
let out_stream = ReceiverStream::new(rx);
Ok(Response::new(Box::pin(out_stream) as Self::AttachStream))
return Ok(Response::new(Box::pin(out_stream) as Self::AttachStream));
} else {
return Err(Status::not_found(format!("Norkspace with session_id {}", session_id)));
}
}
}
#[derive(Debug)]
pub struct WorkspaceService {
tx: mpsc::Sender<AlterState>,
rx: watch::Receiver<HashMap<String, Arc<WorkspaceInstance>>>,
state: Arc<StateManager>,
}
#[tonic::async_trait]
@ -99,10 +132,10 @@ impl Workspace for WorkspaceService {
&self,
request: Request<SessionRequest>,
) -> Result<Response<SessionResponse>, Status> {
println!("Got a request: {:?}", request);
debug!("create request: {:?}", request);
let r = request.into_inner();
// let w = WorkspaceInstance::new(r.session_key.clone(), r.content.unwrap_or("".to_string()));
let w = WorkspaceInstance::new(r.session_key.clone());
let reply = proto::SessionResponse {
session_key: r.session_key.clone(),
@ -120,18 +153,22 @@ impl Workspace for WorkspaceService {
&self,
request: Request<SessionRequest>,
) -> Result<Response<SessionResponse>, Status> {
println!("Got a request: {:?}", request);
debug!("sync request: {:?}", request);
let r = request.into_inner();
if let Some(w) = self.rx.borrow().get(&r.session_key) {
let reply = proto::SessionResponse {
session_key: r.session_key,
accepted: true,
content: Some(w.content.clone()),
hash: None,
};
if let Some(w) = self.state.workspaces.borrow().get(&r.session_key) {
if let Some(buf) = w.buffers.borrow().get(&r.session_key) {
let reply = proto::SessionResponse {
session_key: r.session_key,
accepted: true,
content: Some(buf.content.borrow().clone()),
hash: None,
};
Ok(Response::new(reply))
Ok(Response::new(reply))
} else {
Err(Status::out_of_range("fuck you".to_string()))
}
} else {
Err(Status::out_of_range("fuck you".to_string()))
}
@ -142,7 +179,7 @@ impl Workspace for WorkspaceService {
&self,
request: Request<SessionRequest>,
) -> Result<Response<SessionResponse>, Status> {
println!("Got a request: {:?}", request);
debug!("join request: {:?}", request);
let reply = proto::SessionResponse {
session_key: request.into_inner().session_key,
@ -158,12 +195,12 @@ impl Workspace for WorkspaceService {
&self,
request: Request<SessionRequest>,
) -> Result<Response<SessionResponse>, Status> {
println!("Got a request: {:?}", request);
debug!("leave request: {:?}", request);
let r = request.into_inner();
let mut removed = false;
if self.rx.borrow().get(&r.session_key).is_some() {
self.tx
if self.state.workspaces.borrow().get(&r.session_key).is_some() {
self.state.op_tx
.send(AlterState::REMOVE {
key: r.session_key.clone(),
})
@ -185,17 +222,39 @@ impl Workspace for WorkspaceService {
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
tracing_subscriber::fmt::init();
let addr = "[::1]:50051".parse()?;
let (tx, rx) = state::run_state_manager();
let greeter = WorkspaceService { tx, rx };
let processor = BufferService {};
let state = Arc::new(StateManager::new());
let greeter = WorkspaceService { state: state.clone() };
let processor = BufferService { state: state.clone() };
info!("Starting server");
Server::builder()
.add_service(WorkspaceServer::new(greeter))
.add_service(BufferServer::new(processor))
.serve(addr)
.await?;
/*
fn main() {
// install global collector configured based on RUST_LOG env var.
tracing_subscriber::fmt::init();
let number_of_yaks = 3;
// this creates a new event, outside of any spans.
info!(number_of_yaks, "preparing to shave yaks");
let number_shaved = yak_shave::shave_all(number_of_yaks);
info!(
all_yaks_shaved = number_shaved == number_of_yaks,
"yak shaving completed."
);
}
*/
Ok(())
}