Unverified Commit bd31557d authored by Alexandru Vasile's avatar Alexandru Vasile Committed by GitHub
Browse files

Uniform log messages (#855)



* client: Log when frontend is dropped

Signed-off-by: default avatarAlexandru Vasile <alexandru.vasile@parity.io>

* client: Never fail to handle frontend messages

Signed-off-by: default avatarAlexandru Vasile <alexandru.vasile@parity.io>

* client: Format frontend warnings

Signed-off-by: default avatarAlexandru Vasile <alexandru.vasile@parity.io>

* client: Format backend messages

Signed-off-by: default avatarAlexandru Vasile <alexandru.vasile@parity.io>

* client: Uniform log messages

Signed-off-by: default avatarAlexandru Vasile <alexandru.vasile@parity.io>

* server: Uniform logs

Signed-off-by: default avatarAlexandru Vasile <alexandru.vasile@parity.io>

* server: Adjust logs

Signed-off-by: default avatarAlexandru Vasile <alexandru.vasile@parity.io>

* test: Fix cargo clippy

Signed-off-by: default avatarAlexandru Vasile <alexandru.vasile@parity.io>

* server: Log error as unrecoverable

Signed-off-by: default avatarAlexandru Vasile <alexandru.vasile@parity.io>

* Update core/src/client/async_client/mod.rs

Co-authored-by: Niklas Adolfsson's avatarNiklas Adolfsson <niklasadolfsson1@gmail.com>

* Update core/src/client/async_client/mod.rs

Co-authored-by: Niklas Adolfsson's avatarNiklas Adolfsson <niklasadolfsson1@gmail.com>

Signed-off-by: default avatarAlexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: Niklas Adolfsson's avatarNiklas Adolfsson <niklasadolfsson1@gmail.com>
parent 6fdb67f9
Pipeline #208633 passed with stages
in 5 minutes and 9 seconds
......@@ -199,7 +199,7 @@ impl TransportSenderT for Sender {
/// Sends out a ping request. Returns a `Future` that finishes when the request has been
/// successfully sent.
async fn send_ping(&mut self) -> Result<(), Self::Error> {
tracing::debug!("send ping");
tracing::debug!("Send ping");
// Submit empty slice as "optional" parameter.
let slice: &[u8] = &[];
// Byte slice fails if the provided slice is larger than 125 bytes.
......
......@@ -84,7 +84,7 @@ pub(crate) fn process_subscription_response(
let request_id = match manager.get_request_id_by_subscription_id(&sub_id) {
Some(request_id) => request_id,
None => {
tracing::warn!("Subscription ID: {:?} is not an active subscription", sub_id);
tracing::warn!("Subscription {:?} is not active", sub_id);
return Err(None);
}
};
......@@ -100,7 +100,7 @@ pub(crate) fn process_subscription_response(
}
},
None => {
tracing::warn!("Subscription ID: {:?} is not an active subscription", sub_id);
tracing::warn!("Subscription {:?} is not active", sub_id);
Err(None)
}
}
......@@ -118,7 +118,7 @@ pub(crate) fn process_subscription_close_response(
let request_id = match manager.get_request_id_by_subscription_id(&sub_id) {
Some(request_id) => request_id,
None => {
tracing::error!("The server tried to close down an invalid subscription: {:?}", sub_id);
tracing::error!("The server tried to close an invalid subscription: {:?}", sub_id);
return Err(Error::InvalidSubscriptionId);
}
};
......
......@@ -86,9 +86,9 @@ pub(crate) struct RequestManager {
/// Reverse lookup, to find a request ID in constant time by `subscription ID` instead of looking through all
/// requests.
subscriptions: HashMap<SubscriptionId<'static>, RequestId>,
/// Pending batch requests
/// Pending batch requests.
batches: FxHashMap<Vec<RequestId>, BatchState>,
/// Registered Methods for incoming notifications
/// Registered Methods for incoming notifications.
notification_handlers: HashMap<String, SubscriptionSink>,
}
......@@ -98,7 +98,7 @@ impl RequestManager {
Self::default()
}
/// Tries to insert a new pending call.
/// Tries to insert a new pending request.
///
/// Returns `Ok` if the pending request was successfully inserted otherwise `Err`.
pub(crate) fn insert_pending_call(
......@@ -114,7 +114,7 @@ impl RequestManager {
}
}
/// Tries to insert a new batch request
/// Tries to insert a new batch request.
///
/// Returns `Ok` if the pending request was successfully inserted otherwise `Err`.
pub(crate) fn insert_pending_batch(
......@@ -134,6 +134,7 @@ impl RequestManager {
Err(send_back)
}
}
/// Tries to insert a new pending subscription and reserves a slot for a "potential" unsubscription request.
///
/// Returns `Ok` if the pending request was successfully inserted otherwise `Err`.
......
......@@ -542,7 +542,7 @@ async fn handle_backend_messages<S: TransportSenderT, R: TransportReceiverT>(
match message {
Some(Ok(ReceivedMessage::Pong)) => {
tracing::debug!("recv pong");
tracing::debug!("Received pong");
}
Some(Ok(ReceivedMessage::Bytes(raw))) => {
handle_recv_message(raw.as_ref(), manager, sender, max_notifs_per_subscription).await?;
......@@ -551,12 +551,10 @@ async fn handle_backend_messages<S: TransportSenderT, R: TransportReceiverT>(
handle_recv_message(raw.as_ref(), manager, sender, max_notifs_per_subscription).await?;
}
Some(Err(e)) => {
tracing::error!("Error: {:?} terminating client", e);
return Err(Error::Transport(e.into()));
}
None => {
tracing::error!("[backend]: WebSocket receiver dropped; terminate client");
return Err(Error::Custom("WebSocket receiver dropped".into()));
return Err(Error::Custom("TransportReceiver dropped".into()));
}
}
......@@ -564,49 +562,41 @@ async fn handle_backend_messages<S: TransportSenderT, R: TransportReceiverT>(
}
/// Handle frontend messages.
///
/// Returns an error if the main background loop should be terminated.
async fn handle_frontend_messages<S: TransportSenderT>(
message: Option<FrontToBack>,
message: FrontToBack,
manager: &mut RequestManager,
sender: &mut S,
max_notifs_per_subscription: usize,
) -> Result<(), Error> {
) {
match message {
// User dropped the sender side of the channel.
// There is nothing to do just terminate.
None => {
return Err(Error::Custom("[backend]: frontend dropped; terminate client".into()));
}
Some(FrontToBack::Batch(batch)) => {
FrontToBack::Batch(batch) => {
if let Err(send_back) = manager.insert_pending_batch(batch.ids.clone(), batch.send_back) {
tracing::warn!("[backend]: batch request: {:?} already pending", batch.ids);
tracing::warn!("[backend]: Batch request already pending: {:?}", batch.ids);
let _ = send_back.send(Err(Error::InvalidRequestId));
return Ok(());
return;
}
if let Err(e) = sender.send(batch.raw).await {
tracing::warn!("[backend]: client batch request failed: {:?}", e);
tracing::warn!("[backend]: Batch request failed: {:?}", e);
manager.complete_pending_batch(batch.ids);
}
}
// User called `notification` on the front-end
Some(FrontToBack::Notification(notif)) => {
FrontToBack::Notification(notif) => {
if let Err(e) = sender.send(notif).await {
tracing::warn!("[backend]: client notif failed: {:?}", e);
tracing::warn!("[backend]: Notification failed: {:?}", e);
}
}
// User called `request` on the front-end
Some(FrontToBack::Request(request)) => match sender.send(request.raw).await {
FrontToBack::Request(request) => match sender.send(request.raw).await {
Ok(_) => manager.insert_pending_call(request.id, request.send_back).expect("ID unused checked above; qed"),
Err(e) => {
tracing::warn!("[backend]: client request failed: {:?}", e);
tracing::warn!("[backend]: Request failed: {:?}", e);
let _ = request.send_back.map(|s| s.send(Err(Error::Transport(e.into()))));
}
},
// User called `subscribe` on the front-end.
Some(FrontToBack::Subscribe(sub)) => match sender.send(sub.raw).await {
FrontToBack::Subscribe(sub) => match sender.send(sub.raw).await {
Ok(_) => manager
.insert_pending_subscription(
sub.subscribe_id,
......@@ -616,13 +606,13 @@ async fn handle_frontend_messages<S: TransportSenderT>(
)
.expect("Request ID unused checked above; qed"),
Err(e) => {
tracing::warn!("[backend]: client subscription failed: {:?}", e);
tracing::warn!("[backend]: Subscription failed: {:?}", e);
let _ = sub.send_back.send(Err(Error::Transport(e.into())));
}
},
// User dropped a subscription.
Some(FrontToBack::SubscriptionClosed(sub_id)) => {
tracing::trace!("Closing subscription: {:?}", sub_id);
FrontToBack::SubscriptionClosed(sub_id) => {
tracing::trace!("[backend]: Closing subscription: {:?}", sub_id);
// NOTE: The subscription may have been closed earlier if
// the channel was full or disconnected.
if let Some(unsub) = manager
......@@ -633,7 +623,7 @@ async fn handle_frontend_messages<S: TransportSenderT>(
}
}
// User called `register_notification` on the front-end.
Some(FrontToBack::RegisterNotification(reg)) => {
FrontToBack::RegisterNotification(reg) => {
let (subscribe_tx, subscribe_rx) = mpsc::channel(max_notifs_per_subscription);
if manager.insert_notification_handler(&reg.method, subscribe_tx).is_ok() {
......@@ -642,13 +632,11 @@ async fn handle_frontend_messages<S: TransportSenderT>(
let _ = reg.send_back.send(Err(Error::MethodAlreadyRegistered(reg.method)));
}
}
// User dropped the notificationHandler for this method
Some(FrontToBack::UnregisterNotification(method)) => {
// User dropped the NotificationHandler for this method
FrontToBack::UnregisterNotification(method) => {
let _ = manager.remove_notification_handler(method);
}
}
Ok(())
}
/// Function being run in the background that processes messages from the frontend.
......@@ -692,14 +680,18 @@ async fn background_task<S, R>(
match future::select(message_fut, submit_ping).await {
// Message received from the frontend.
Either::Left((Either::Left((frontend_value, backend)), _)) => {
if let Err(err) =
handle_frontend_messages(frontend_value, &mut manager, &mut sender, max_notifs_per_subscription)
.await
{
tracing::warn!("{:?}", err);
let _ = front_error.send(err);
let frontend_value = if let Some(value) = frontend_value {
value
} else {
// User dropped the sender side of the channel.
// There is nothing to do just terminate.
tracing::debug!("[backend]: Client dropped");
break;
}
};
handle_frontend_messages(frontend_value, &mut manager, &mut sender, max_notifs_per_subscription)
.await;
// Advance frontend, save backend.
message_fut = future::select(frontend.next(), backend);
}
......@@ -713,7 +705,7 @@ async fn background_task<S, R>(
)
.await
{
tracing::warn!("{:?}", err);
tracing::error!("[backend]: {}", err);
let _ = front_error.send(err);
break;
}
......@@ -722,8 +714,8 @@ async fn background_task<S, R>(
}
// Submit ping interval was triggered if enabled.
Either::Right((_, next_message_fut)) => {
if let Err(e) = sender.send_ping().await {
tracing::warn!("[backend]: client send ping failed: {:?}", e);
if let Err(err) = sender.send_ping().await {
tracing::error!("[backend]: Could not send ping frame: {}", err);
let _ = front_error.send(Error::Custom("Could not send ping frame".into()));
break;
}
......@@ -731,6 +723,7 @@ async fn background_task<S, R>(
}
};
}
// Wake the `on_disconnect` method.
let _ = on_close.send(());
// Send close message to the server.
......
......@@ -83,7 +83,7 @@ impl<'a> io::Write for &'a mut BoundedWriter {
/// Sink that is used to send back the result to the server for a specific method.
#[derive(Clone, Debug)]
pub struct MethodSink {
/// Channel sender
/// Channel sender.
tx: mpsc::UnboundedSender<String>,
/// Max response size in bytes for a executed call.
max_response_size: u32,
......@@ -92,12 +92,12 @@ pub struct MethodSink {
}
impl MethodSink {
/// Create a new `MethodSink` with unlimited response size
/// Create a new `MethodSink` with unlimited response size.
pub fn new(tx: mpsc::UnboundedSender<String>) -> Self {
MethodSink { tx, max_response_size: u32::MAX, max_log_length: u32::MAX }
}
/// Create a new `MethodSink` with a limited response size
/// Create a new `MethodSink` with a limited response size.
pub fn new_with_limit(tx: mpsc::UnboundedSender<String>, max_response_size: u32, max_log_length: u32) -> Self {
MethodSink { tx, max_response_size, max_log_length }
}
......@@ -112,7 +112,7 @@ impl MethodSink {
let json = match serde_json::to_string(&ErrorResponse::borrowed(error, id)) {
Ok(json) => json,
Err(err) => {
tracing::error!("Error serializing error message: {:?}", err);
tracing::error!("Error serializing response: {:?}", err);
return false;
}
......@@ -128,7 +128,7 @@ impl MethodSink {
}
}
/// Helper for sending the general purpose `Error` as a JSON-RPC errors to the client
/// Helper for sending the general purpose `Error` as a JSON-RPC errors to the client.
pub fn send_call_error(&self, id: Id, err: Error) -> bool {
self.send_error(id, err.into())
}
......
......@@ -364,7 +364,7 @@ impl Methods {
) -> Result<T, Error> {
let params = params.to_rpc_params()?;
let req = Request::new(method.into(), Some(&params), Id::Number(0));
tracing::trace!("[Methods::call] Calling method: {:?}, params: {:?}", method, params);
tracing::trace!("[Methods::call] Method: {:?}, params: {:?}", method, params);
let (resp, _, _) = self.inner_call(req).await;
if resp.success {
......@@ -406,10 +406,10 @@ impl Methods {
/// ```
pub async fn raw_json_request(
&self,
call: &str,
request: &str,
) -> Result<(MethodResponse, mpsc::UnboundedReceiver<String>), Error> {
tracing::trace!("[Methods::raw_json_request] {:?}", call);
let req: Request = serde_json::from_str(call)?;
tracing::trace!("[Methods::raw_json_request] Request: {:?}", request);
let req: Request = serde_json::from_str(request)?;
let (resp, rx, _) = self.inner_call(req).await;
Ok((resp, rx))
}
......@@ -424,7 +424,7 @@ impl Methods {
let close_notify = bounded_subs.acquire().expect("u32::MAX permits is sufficient; qed");
let notify = bounded_subs.acquire().expect("u32::MAX permits is sufficient; qed");
let result = match self.method(&req.method).map(|c| &c.callback) {
let response = match self.method(&req.method).map(|c| &c.callback) {
None => MethodResponse::error(req.id, ErrorObject::from(ErrorCode::MethodNotFound)),
Some(MethodKind::Sync(cb)) => (cb)(id, params, usize::MAX),
Some(MethodKind::Async(cb)) => (cb)(id.into_owned(), params.into_owned(), 0, usize::MAX, None).await,
......@@ -443,9 +443,9 @@ impl Methods {
Some(MethodKind::Unsubscription(cb)) => (cb)(id, params, 0, usize::MAX),
};
tracing::trace!("[Methods::inner_call]: method: `{}` result: {:?}", req.method, result);
tracing::trace!("[Methods::inner_call] Method: {}, response: {:?}", req.method, response);
(result, rx_sink, notify)
(response, rx_sink, notify)
}
/// Helper to create a subscription on the `RPC module` without having to spin up a server.
......@@ -477,12 +477,10 @@ impl Methods {
let params = params.to_rpc_params()?;
let req = Request::new(sub_method.into(), Some(&params), Id::Number(0));
tracing::trace!("[Methods::subscribe] Calling subscription method: {:?}, params: {:?}", sub_method, params);
tracing::trace!("[Methods::subscribe] Method: {}, params: {:?}", sub_method, params);
let (response, rx, close_notify) = self.inner_call(req).await;
tracing::trace!("[Methods::subscribe] response {:?}", response);
let subscription_response = match serde_json::from_str::<Response<RpcSubscriptionId>>(&response.result) {
Ok(r) => r,
Err(_) => match serde_json::from_str::<ErrorResponse>(&response.result) {
......@@ -728,7 +726,7 @@ impl<Context: Send + Sync + 'static> RpcModule<Context> {
Ok(sub_id) => sub_id,
Err(_) => {
tracing::warn!(
"unsubscribe call '{}' failed: couldn't parse subscription id={:?} request id={:?}",
"Unsubscribe call `{}` failed: couldn't parse subscription id={:?} request id={:?}",
unsubscribe_method_name,
params,
id
......@@ -743,7 +741,7 @@ impl<Context: Send + Sync + 'static> RpcModule<Context> {
if !result {
tracing::warn!(
"unsubscribe call `{}` subscription key={:?} not an active subscription",
"Unsubscribe call `{}` subscription key={:?} not an active subscription",
unsubscribe_method_name,
key,
);
......@@ -778,7 +776,7 @@ impl<Context: Send + Sync + 'static> RpcModule<Context> {
// The callback returns a `SubscriptionResult` for better ergonomics and is not propagated further.
if callback(params, sink, ctx.clone()).is_err() {
tracing::warn!("subscribe call `{}` failed", subscribe_method_name);
tracing::warn!("Subscribe call `{}` failed", subscribe_method_name);
}
let id = id.clone().into_owned();
......
......@@ -487,12 +487,12 @@ impl<L: Logger> ServiceData<L> {
let maybe_origin = http_helpers::read_header_value(request.headers(), "origin");
if let Err(e) = acl.verify_host(host) {
tracing::warn!("Denied request: {:?}", e);
tracing::warn!("Denied request: {}", e);
return response::host_not_allowed();
}
if let Err(e) = acl.verify_origin(maybe_origin, host) {
tracing::warn!("Denied request: {:?}", e);
tracing::warn!("Denied request: {}", e);
return response::origin_rejected(maybe_origin);
}
......@@ -936,7 +936,7 @@ async fn execute_call<L: Logger>(c: Call<'_, L>) -> MethodResponse {
r
}
Err(err) => {
tracing::error!("[Methods::execute_with_resources] failed to lock resources: {:?}", err);
tracing::error!("[Methods::execute_with_resources] failed to lock resources: {}", err);
MethodResponse::error(id, ErrorObject::from(ErrorCode::ServerIsBusy))
}
}
......@@ -951,7 +951,7 @@ async fn execute_call<L: Logger>(c: Call<'_, L>) -> MethodResponse {
(callback)(id, params, conn_id, max_response_body_size as usize, Some(guard)).await
}
Err(err) => {
tracing::error!("[Methods::execute_with_resources] failed to lock resources: {:?}", err);
tracing::error!("[Methods::execute_with_resources] failed to lock resources: {}", err);
MethodResponse::error(id, ErrorObject::from(ErrorCode::ServerIsBusy))
}
}
......
......@@ -506,10 +506,10 @@ async fn ws_server_notify_client_on_disconnect() {
server_handle.stop().unwrap().await;
// The `on_disconnect()` method returned.
let _ = dis_rx.await.unwrap();
dis_rx.await.unwrap();
// Multiple `on_disconnect()` calls did not block.
let _ = multiple_rx.await.unwrap();
multiple_rx.await.unwrap();
}
#[tokio::test]
......
......@@ -126,12 +126,12 @@ impl<L: Logger> Server<L> {
match connections.select_with(&mut incoming).await {
Ok((socket, _addr)) => {
if let Err(e) = socket.set_nodelay(true) {
tracing::error!("Could not set NODELAY on socket: {:?}", e);
tracing::warn!("Could not set NODELAY on socket: {:?}", e);
continue;
}
if connections.count() >= self.cfg.max_connections as usize {
tracing::warn!("Too many connections. Try again in a while.");
tracing::warn!("Too many connections. Please try again later.");
connections.add(Box::pin(handshake(socket, HandshakeResponse::Reject { status_code: 429 })));
continue;
}
......@@ -264,7 +264,7 @@ async fn handshake<L: Logger>(socket: tokio::net::TcpStream, mode: HandshakeResp
server.send_response(&accept).await?;
}
Err(err) => {
tracing::warn!("Rejected connection: {:?}", err);
tracing::warn!("Rejected connection: {} error: {:?}", conn_id, err);
let reject = Response::Reject { status_code: 403 };
server.send_response(&reject).await?;
......@@ -360,7 +360,7 @@ async fn background_task<L: Logger>(input: BackgroundTask<'_, L>) -> Result<(),
Either::Left((Some(response), ping)) => {
// If websocket message send fail then terminate the connection.
if let Err(err) = send_ws_message(&mut sender, response).await {
tracing::warn!("WS send error: {}; terminate connection", err);
tracing::error!("Terminate connection: WS send error: {}", err);
break;
}
rx_item = rx.next();
......@@ -372,7 +372,7 @@ async fn background_task<L: Logger>(input: BackgroundTask<'_, L>) -> Result<(),
// Handle timer intervals.
Either::Right((_, next_rx)) => {
if let Err(err) = send_ws_ping(&mut sender).await {
tracing::warn!("WS send ping error: {}; terminate connection", err);
tracing::error!("Terminate connection: WS send ping error: {}", err);
break;
}
rx_item = next_rx;
......@@ -403,7 +403,7 @@ async fn background_task<L: Logger>(input: BackgroundTask<'_, L>) -> Result<(),
loop {
match receiver.receive(&mut data).await? {
soketto::Incoming::Data(d) => break Ok(d),
soketto::Incoming::Pong(_) => tracing::debug!("recv pong"),
soketto::Incoming::Pong(_) => tracing::debug!("Received pong"),
soketto::Incoming::Closed(_) => {
// The closing reason is already logged by `soketto` trace log level.
// Return the `Closed` error to avoid logging unnecessary warnings on clean shutdown.
......@@ -418,13 +418,13 @@ async fn background_task<L: Logger>(input: BackgroundTask<'_, L>) -> Result<(),
if let Err(err) = method_executors.select_with(Monitored::new(receive, &stop_server)).await {
match err {
MonitoredError::Selector(SokettoError::Closed) => {
tracing::debug!("WS transport: remote peer terminated the connection: {}", conn_id);
tracing::debug!("WS transport: Remote peer terminated the connection: {}", conn_id);
sink.close();
break Ok(());
}
MonitoredError::Selector(SokettoError::MessageTooLarge { current, maximum }) => {
tracing::warn!(
"WS transport error: outgoing message is too big error ({} bytes, max is {})",
"WS transport error: Request length: {} exceeded max limit: {} bytes",
current,
maximum
);
......@@ -433,7 +433,7 @@ async fn background_task<L: Logger>(input: BackgroundTask<'_, L>) -> Result<(),
}
// These errors can not be gracefully handled, so just log them and terminate the connection.
MonitoredError::Selector(err) => {
tracing::debug!("WS error: {}; terminate connection {}", err, conn_id);
tracing::error!("Terminate connection {}: WS error: {}", conn_id, err);
sink.close();
break Err(err.into());
}
......@@ -795,7 +795,7 @@ async fn send_ws_message(
}
async fn send_ws_ping(sender: &mut Sender<BufReader<BufWriter<Compat<TcpStream>>>>) -> Result<(), Error> {
tracing::debug!("send ping");
tracing::debug!("Send ping");
// Submit empty slice as "optional" parameter.
let slice: &[u8] = &[];
// Byte slice fails if the provided slice is larger than 125 bytes.
......@@ -950,7 +950,7 @@ async fn execute_call<L: Logger>(c: Call<'_, L>) -> MethodResult {
MethodResult::SendAndLogger(r)
}
Err(err) => {
tracing::error!("[Methods::execute_with_resources] failed to lock resources: {:?}", err);
tracing::error!("[Methods::execute_with_resources] failed to lock resources: {}", err);
let response = MethodResponse::error(id, ErrorObject::from(ErrorCode::ServerIsBusy));
MethodResult::SendAndLogger(response)
}
......@@ -969,7 +969,7 @@ async fn execute_call<L: Logger>(c: Call<'_, L>) -> MethodResult {
MethodResult::SendAndLogger(response)
}
Err(err) => {
tracing::error!("[Methods::execute_with_resources] failed to lock resources: {:?}", err);
tracing::error!("[Methods::execute_with_resources] failed to lock resources: {}", err);
let response = MethodResponse::error(id, ErrorObject::from(ErrorCode::ServerIsBusy));
MethodResult::SendAndLogger(response)
}
......@@ -991,7 +991,7 @@ async fn execute_call<L: Logger>(c: Call<'_, L>) -> MethodResult {
}
}
Err(err) => {
tracing::error!("[Methods::execute_with_resources] failed to lock resources: {:?}", err);
tracing::error!("[Methods::execute_with_resources] failed to lock resources: {}", err);
let response = MethodResponse::error(id, ErrorObject::from(ErrorCode::ServerIsBusy));
MethodResult::SendAndLogger(response)
}
......
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