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Create buffers for remote collaborators out of band

Browse Source 
Previously, we would use `Project::serialize_buffer_for_peer` and
`Project::deserialize_buffer` respectively in the host and in the
guest to create a new buffer or just send its ID if the host thought
the buffer had already been sent.

These methods would be called as part of other methods, such as
`Project::open_buffer_by_id` or `Project::open_buffer_for_symbol`.
However, if any of the tasks driving the futures that eventually
called `Project::deserialize_buffer` were dropped after the host
responded with the buffer state but (crucially) before the guest
deserialized it and registered it, there could be a situation where
the host thought the guest had the buffer (thus sending them just the
buffer id) and the guest would wait indefinitely.

Given how crucial this interaction is, this commit switches to creating
remote buffers for peers out of band. The host will push buffers to guests,
who will always refer to buffers via IDs and wait for the host to send them,
as opposed to including the buffer's payload as part of some other operation.
This commit is contained in:
Antonio Scandurra 2022-08-17 11:10:09 +02:00
parent 75c9b90c76
commit 9c9bf07e40
7 changed files with 183 additions and 171 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
crates/collab/src/rpc.rs
View File

@ -187,6 +187,7 @@ impl Server {
.add_request_handler(Server::forward_project_request::<proto::RenameProjectEntry>)
.add_request_handler(Server::forward_project_request::<proto::CopyProjectEntry>)
.add_request_handler(Server::forward_project_request::<proto::DeleteProjectEntry>)
.add_message_handler(Server::create_buffer_for_peer)
.add_request_handler(Server::update_buffer)
.add_message_handler(Server::update_buffer_file)
.add_message_handler(Server::buffer_reloaded)
@ -1186,6 +1187,18 @@ impl Server {
Ok(())
}
async fn create_buffer_for_peer(
self: Arc<Server>,
request: TypedEnvelope<proto::CreateBufferForPeer>,
) -> Result<()> {
self.peer.forward_send(
request.sender_id,
ConnectionId(request.payload.peer_id),
request.payload,
)?;
Ok(())
}
async fn update_buffer(
self: Arc<Server>,
request: TypedEnvelope<proto::UpdateBuffer>,

6
crates/language/src/buffer.rs
View File

@ -358,7 +358,7 @@ impl Buffer {
pub fn from_proto(
replica_id: ReplicaId,
message: proto::BufferState,
message: proto::Buffer,
file: Option<Arc<dyn File>>,
cx: &mut ModelContext<Self>,
) -> Result<Self> {
@ -406,7 +406,7 @@ impl Buffer {
Ok(this)
}
pub fn to_proto(&self) -> proto::BufferState {
pub fn to_proto(&self) -> proto::Buffer {
let mut operations = self
.text
.history()
@ -414,7 +414,7 @@ impl Buffer {
.chain(self.deferred_ops.iter().map(proto::serialize_operation))
.collect::<Vec<_>>();
operations.sort_unstable_by_key(proto::lamport_timestamp_for_operation);
proto::BufferState {
proto::Buffer {
id: self.remote_id(),
file: self.file.as_ref().map(|f| f.to_proto()),
base_text: self.base_text().to_string(),

2
crates/language/src/proto.rs
View File

@ -9,7 +9,7 @@ use rpc::proto;
use std::{ops::Range, sync::Arc};
use text::*;
pub use proto::{Buffer, BufferState, LineEnding, SelectionSet};
pub use proto::{Buffer, LineEnding, SelectionSet};
pub fn deserialize_line_ending(message: proto::LineEnding) -> text::LineEnding {
match message {

29
crates/project/src/lsp_command.rs
View File

@ -522,11 +522,10 @@ async fn location_links_from_proto(
for link in proto_links {
let origin = match link.origin {
Some(origin) => {
let buffer = origin
.buffer
.ok_or_else(|| anyhow!("missing origin buffer"))?;
let buffer = project
.update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
.update(&mut cx, |this, cx| {
this.wait_for_buffer(origin.buffer_id, cx)
})
.await?;
let start = origin
.start
@ -548,9 +547,10 @@ async fn location_links_from_proto(
};
let target = link.target.ok_or_else(|| anyhow!("missing target"))?;
let buffer = target.buffer.ok_or_else(|| anyhow!("missing buffer"))?;
let buffer = project
.update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
.update(&mut cx, |this, cx| {
this.wait_for_buffer(target.buffer_id, cx)
})
.await?;
let start = target
.start
@ -664,19 +664,19 @@ fn location_links_to_proto(
.into_iter()
.map(|definition| {
let origin = definition.origin.map(|origin| {
let buffer = project.serialize_buffer_for_peer(&origin.buffer, peer_id, cx);
let buffer_id = project.create_buffer_for_peer(&origin.buffer, peer_id, cx);
proto::Location {
start: Some(serialize_anchor(&origin.range.start)),
end: Some(serialize_anchor(&origin.range.end)),
buffer: Some(buffer),
buffer_id,
}
});
let buffer = project.serialize_buffer_for_peer(&definition.target.buffer, peer_id, cx);
let buffer_id = project.create_buffer_for_peer(&definition.target.buffer, peer_id, cx);
let target = proto::Location {
start: Some(serialize_anchor(&definition.target.range.start)),
end: Some(serialize_anchor(&definition.target.range.end)),
buffer: Some(buffer),
buffer_id,
};
proto::LocationLink {
@ -792,11 +792,11 @@ impl LspCommand for GetReferences {
let locations = response
.into_iter()
.map(|definition| {
let buffer = project.serialize_buffer_for_peer(&definition.buffer, peer_id, cx);
let buffer_id = project.create_buffer_for_peer(&definition.buffer, peer_id, cx);
proto::Location {
start: Some(serialize_anchor(&definition.range.start)),
end: Some(serialize_anchor(&definition.range.end)),
buffer: Some(buffer),
buffer_id,
}
})
.collect();
@ -812,9 +812,10 @@ impl LspCommand for GetReferences {
) -> Result<Vec<Location>> {
let mut locations = Vec::new();
for location in message.locations {
let buffer = location.buffer.ok_or_else(|| anyhow!("missing buffer"))?;
let target_buffer = project
.update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
.update(&mut cx, |this, cx| {
this.wait_for_buffer(location.buffer_id, cx)
})
.await?;
let start = location
.start

185
crates/project/src/project.rs
View File

@ -112,7 +112,7 @@ pub struct Project {
collaborators: HashMap<PeerId, Collaborator>,
client_subscriptions: Vec<client::Subscription>,
_subscriptions: Vec<gpui::Subscription>,
opened_buffer: (Rc<RefCell<watch::Sender<()>>>, watch::Receiver<()>),
opened_buffer: (watch::Sender<()>, watch::Receiver<()>),
shared_buffers: HashMap<PeerId, HashSet<u64>>,
#[allow(clippy::type_complexity)]
loading_buffers: HashMap<
@ -375,6 +375,7 @@ impl Project {
client.add_model_message_handler(Self::handle_update_project);
client.add_model_message_handler(Self::handle_unregister_project);
client.add_model_message_handler(Self::handle_project_unshared);
client.add_model_message_handler(Self::handle_create_buffer_for_peer);
client.add_model_message_handler(Self::handle_update_buffer_file);
client.add_model_message_handler(Self::handle_update_buffer);
client.add_model_message_handler(Self::handle_update_diagnostic_summary);
@ -454,7 +455,6 @@ impl Project {
let handle = cx.weak_handle();
project_store.update(cx, |store, cx| store.add_project(handle, cx));
let (opened_buffer_tx, opened_buffer_rx) = watch::channel();
Self {
worktrees: Default::default(),
collaborators: Default::default(),
@ -472,7 +472,7 @@ impl Project {
_maintain_remote_id,
_maintain_online_status,
},
opened_buffer: (Rc::new(RefCell::new(opened_buffer_tx)), opened_buffer_rx),
opened_buffer: watch::channel(),
client_subscriptions: Vec::new(),
_subscriptions: vec![cx.observe_global::<Settings, _>(Self::on_settings_changed)],
_maintain_buffer_languages: Self::maintain_buffer_languages(&languages, cx),
@ -540,7 +540,6 @@ impl Project {
worktrees.push(worktree);
}
let (opened_buffer_tx, opened_buffer_rx) = watch::channel();
let this = cx.add_model(|cx: &mut ModelContext<Self>| {
let handle = cx.weak_handle();
project_store.update(cx, |store, cx| store.add_project(handle, cx));
@ -548,7 +547,7 @@ impl Project {
let mut this = Self {
worktrees: Vec::new(),
loading_buffers: Default::default(),
opened_buffer: (Rc::new(RefCell::new(opened_buffer_tx)), opened_buffer_rx),
opened_buffer: watch::channel(),
shared_buffers: Default::default(),
loading_local_worktrees: Default::default(),
active_entry: None,
@ -1624,9 +1623,10 @@ impl Project {
path: path_string,
})
.await?;
let buffer = response.buffer.ok_or_else(|| anyhow!("missing buffer"))?;
this.update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
.await
this.update(&mut cx, |this, cx| {
this.wait_for_buffer(response.buffer_id, cx)
})
.await
})
}
@ -1684,11 +1684,8 @@ impl Project {
.client
.request(proto::OpenBufferById { project_id, id });
cx.spawn(|this, mut cx| async move {
let buffer = request
.await?
.buffer
.ok_or_else(|| anyhow!("invalid buffer"))?;
this.update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
let buffer_id = request.await?.buffer_id;
this.update(&mut cx, |this, cx| this.wait_for_buffer(buffer_id, cx))
.await
})
} else {
@ -1800,6 +1797,7 @@ impl Project {
})
.detach();
*self.opened_buffer.0.borrow_mut() = ();
Ok(())
}
@ -3476,9 +3474,10 @@ impl Project {
});
cx.spawn(|this, mut cx| async move {
let response = request.await?;
let buffer = response.buffer.ok_or_else(|| anyhow!("invalid buffer"))?;
this.update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
.await
this.update(&mut cx, |this, cx| {
this.wait_for_buffer(response.buffer_id, cx)
})
.await
})
} else {
Task::ready(Err(anyhow!("project does not have a remote id")))
@ -4294,9 +4293,10 @@ impl Project {
let response = request.await?;
let mut result = HashMap::default();
for location in response.locations {
let buffer = location.buffer.ok_or_else(|| anyhow!("missing buffer"))?;
let target_buffer = this
.update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
.update(&mut cx, |this, cx| {
this.wait_for_buffer(location.buffer_id, cx)
})
.await?;
let start = location
.start
@ -5107,6 +5107,36 @@ impl Project {
})
}
async fn handle_create_buffer_for_peer(
this: ModelHandle<Self>,
envelope: TypedEnvelope<proto::CreateBufferForPeer>,
_: Arc<Client>,
mut cx: AsyncAppContext,
) -> Result<()> {
this.update(&mut cx, |this, cx| {
let mut buffer = envelope
.payload
.buffer
.ok_or_else(|| anyhow!("invalid buffer"))?;
let mut buffer_file = None;
if let Some(file) = buffer.file.take() {
let worktree_id = WorktreeId::from_proto(file.worktree_id);
let worktree = this
.worktree_for_id(worktree_id, cx)
.ok_or_else(|| anyhow!("no worktree found for id {}", file.worktree_id))?;
buffer_file = Some(Arc::new(File::from_proto(file, worktree.clone(), cx)?)
as Arc<dyn language::File>);
}
let buffer = cx.add_model(|cx| {
Buffer::from_proto(this.replica_id(), buffer, buffer_file, cx).unwrap()
});
this.register_buffer(&buffer, cx)?;
Ok(())
})
}
async fn handle_update_buffer_file(
this: ModelHandle<Self>,
envelope: TypedEnvelope<proto::UpdateBufferFile>,
@ -5448,9 +5478,9 @@ impl Project {
for range in ranges {
let start = serialize_anchor(&range.start);
let end = serialize_anchor(&range.end);
let buffer = this.serialize_buffer_for_peer(&buffer, peer_id, cx);
let buffer_id = this.create_buffer_for_peer(&buffer, peer_id, cx);
locations.push(proto::Location {
buffer: Some(buffer),
buffer_id,
start: Some(start),
end: Some(end),
});
@ -5487,9 +5517,9 @@ impl Project {
.await?;
Ok(proto::OpenBufferForSymbolResponse {
buffer: Some(this.update(&mut cx, |this, cx| {
this.serialize_buffer_for_peer(&buffer, peer_id, cx)
})),
buffer_id: this.update(&mut cx, |this, cx| {
this.create_buffer_for_peer(&buffer, peer_id, cx)
}),
})
}
@ -5515,7 +5545,7 @@ impl Project {
.await?;
this.update(&mut cx, |this, cx| {
Ok(proto::OpenBufferResponse {
buffer: Some(this.serialize_buffer_for_peer(&buffer, peer_id, cx)),
buffer_id: this.create_buffer_for_peer(&buffer, peer_id, cx),
})
})
}
@ -5541,7 +5571,7 @@ impl Project {
let buffer = open_buffer.await?;
this.update(&mut cx, |this, cx| {
Ok(proto::OpenBufferResponse {
buffer: Some(this.serialize_buffer_for_peer(&buffer, peer_id, cx)),
buffer_id: this.create_buffer_for_peer(&buffer, peer_id, cx),
})
})
}
@ -5553,13 +5583,13 @@ impl Project {
cx: &AppContext,
) -> proto::ProjectTransaction {
let mut serialized_transaction = proto::ProjectTransaction {
buffers: Default::default(),
buffer_ids: Default::default(),
transactions: Default::default(),
};
for (buffer, transaction) in project_transaction.0 {
serialized_transaction
.buffers
.push(self.serialize_buffer_for_peer(&buffer, peer_id, cx));
.buffer_ids
.push(self.create_buffer_for_peer(&buffer, peer_id, cx));
serialized_transaction
.transactions
.push(language::proto::serialize_transaction(&transaction));
@ -5575,9 +5605,10 @@ impl Project {
) -> Task<Result<ProjectTransaction>> {
cx.spawn(|this, mut cx| async move {
let mut project_transaction = ProjectTransaction::default();
for (buffer, transaction) in message.buffers.into_iter().zip(message.transactions) {
for (buffer_id, transaction) in message.buffer_ids.into_iter().zip(message.transactions)
{
let buffer = this
.update(&mut cx, |this, cx| this.deserialize_buffer(buffer, cx))
.update(&mut cx, |this, cx| this.wait_for_buffer(buffer_id, cx))
.await?;
let transaction = language::proto::deserialize_transaction(transaction)?;
project_transaction.0.insert(buffer, transaction);
@ -5601,81 +5632,51 @@ impl Project {
})
}
fn serialize_buffer_for_peer(
fn create_buffer_for_peer(
&mut self,
buffer: &ModelHandle<Buffer>,
peer_id: PeerId,
cx: &AppContext,
) -> proto::Buffer {
) -> u64 {
let buffer_id = buffer.read(cx).remote_id();
let shared_buffers = self.shared_buffers.entry(peer_id).or_default();
if shared_buffers.insert(buffer_id) {
proto::Buffer {
variant: Some(proto::buffer::Variant::State(buffer.read(cx).to_proto())),
}
} else {
proto::Buffer {
variant: Some(proto::buffer::Variant::Id(buffer_id)),
if let Some(project_id) = self.remote_id() {
let shared_buffers = self.shared_buffers.entry(peer_id).or_default();
if shared_buffers.insert(buffer_id) {
self.client
.send(proto::CreateBufferForPeer {
project_id,
peer_id: peer_id.0,
buffer: Some(buffer.read(cx).to_proto()),
})
.log_err();
}
}
buffer_id
}
fn deserialize_buffer(
&mut self,
buffer: proto::Buffer,
fn wait_for_buffer(
&self,
id: u64,
cx: &mut ModelContext<Self>,
) -> Task<Result<ModelHandle<Buffer>>> {
let replica_id = self.replica_id();
let opened_buffer_tx = self.opened_buffer.0.clone();
let mut opened_buffer_rx = self.opened_buffer.1.clone();
cx.spawn(|this, mut cx| async move {
match buffer.variant.ok_or_else(|| anyhow!("missing buffer"))? {
proto::buffer::Variant::Id(id) => {
let buffer = loop {
let buffer = this.read_with(&cx, |this, cx| {
this.opened_buffers
.get(&id)
.and_then(|buffer| buffer.upgrade(cx))
});
if let Some(buffer) = buffer {
break buffer;
}
opened_buffer_rx
.next()
.await
.ok_or_else(|| anyhow!("project dropped while waiting for buffer"))?;
};
Ok(buffer)
cx.spawn(|this, cx| async move {
let buffer = loop {
let buffer = this.read_with(&cx, |this, cx| {
this.opened_buffers
.get(&id)
.and_then(|buffer| buffer.upgrade(cx))
});
if let Some(buffer) = buffer {
break buffer;
}
proto::buffer::Variant::State(mut buffer) => {
let mut buffer_worktree = None;
let mut buffer_file = None;
if let Some(file) = buffer.file.take() {
this.read_with(&cx, |this, cx| {
let worktree_id = WorktreeId::from_proto(file.worktree_id);
let worktree =
this.worktree_for_id(worktree_id, cx).ok_or_else(|| {
anyhow!("no worktree found for id {}", file.worktree_id)
})?;
buffer_file =
Some(Arc::new(File::from_proto(file, worktree.clone(), cx)?)
as Arc<dyn language::File>);
buffer_worktree = Some(worktree);
Ok::<_, anyhow::Error>(())
})?;
}
let buffer = cx.add_model(|cx| {
Buffer::from_proto(replica_id, buffer, buffer_file, cx).unwrap()
});
this.update(&mut cx, |this, cx| this.register_buffer(&buffer, cx))?;
*opened_buffer_tx.borrow_mut().borrow_mut() = ();
Ok(buffer)
}
}
opened_buffer_rx
.next()
.await
.ok_or_else(|| anyhow!("project dropped while waiting for buffer"))?;
};
Ok(buffer)
})
}

117
crates/rpc/proto/zed.proto
View File

@ -55,58 +55,59 @@ message Envelope {
OpenBufferById open_buffer_by_id = 44;
OpenBufferByPath open_buffer_by_path = 45;
OpenBufferResponse open_buffer_response = 46;
UpdateBuffer update_buffer = 47;
UpdateBufferFile update_buffer_file = 48;
SaveBuffer save_buffer = 49;
BufferSaved buffer_saved = 50;
BufferReloaded buffer_reloaded = 51;
ReloadBuffers reload_buffers = 52;
ReloadBuffersResponse reload_buffers_response = 53;
FormatBuffers format_buffers = 54;
FormatBuffersResponse format_buffers_response = 55;
GetCompletions get_completions = 56;
GetCompletionsResponse get_completions_response = 57;
ApplyCompletionAdditionalEdits apply_completion_additional_edits = 58;
ApplyCompletionAdditionalEditsResponse apply_completion_additional_edits_response = 59;
GetCodeActions get_code_actions = 60;
GetCodeActionsResponse get_code_actions_response = 61;
GetHover get_hover = 62;
GetHoverResponse get_hover_response = 63;
ApplyCodeAction apply_code_action = 64;
ApplyCodeActionResponse apply_code_action_response = 65;
PrepareRename prepare_rename = 66;
PrepareRenameResponse prepare_rename_response = 67;
PerformRename perform_rename = 68;
PerformRenameResponse perform_rename_response = 69;
SearchProject search_project = 70;
SearchProjectResponse search_project_response = 71;
CreateBufferForPeer create_buffer_for_peer = 47;
UpdateBuffer update_buffer = 48;
UpdateBufferFile update_buffer_file = 49;
SaveBuffer save_buffer = 50;
BufferSaved buffer_saved = 51;
BufferReloaded buffer_reloaded = 52;
ReloadBuffers reload_buffers = 53;
ReloadBuffersResponse reload_buffers_response = 54;
FormatBuffers format_buffers = 55;
FormatBuffersResponse format_buffers_response = 56;
GetCompletions get_completions = 57;
GetCompletionsResponse get_completions_response = 58;
ApplyCompletionAdditionalEdits apply_completion_additional_edits = 59;
ApplyCompletionAdditionalEditsResponse apply_completion_additional_edits_response = 60;
GetCodeActions get_code_actions = 61;
GetCodeActionsResponse get_code_actions_response = 62;
GetHover get_hover = 63;
GetHoverResponse get_hover_response = 64;
ApplyCodeAction apply_code_action = 65;
ApplyCodeActionResponse apply_code_action_response = 66;
PrepareRename prepare_rename = 67;
PrepareRenameResponse prepare_rename_response = 68;
PerformRename perform_rename = 69;
PerformRenameResponse perform_rename_response = 70;
SearchProject search_project = 71;
SearchProjectResponse search_project_response = 72;
GetChannels get_channels = 72;
GetChannelsResponse get_channels_response = 73;
JoinChannel join_channel = 74;
JoinChannelResponse join_channel_response = 75;
LeaveChannel leave_channel = 76;
SendChannelMessage send_channel_message = 77;
SendChannelMessageResponse send_channel_message_response = 78;
ChannelMessageSent channel_message_sent = 79;
GetChannelMessages get_channel_messages = 80;
GetChannelMessagesResponse get_channel_messages_response = 81;
GetChannels get_channels = 73;
GetChannelsResponse get_channels_response = 74;
JoinChannel join_channel = 75;
JoinChannelResponse join_channel_response = 76;
LeaveChannel leave_channel = 77;
SendChannelMessage send_channel_message = 78;
SendChannelMessageResponse send_channel_message_response = 79;
ChannelMessageSent channel_message_sent = 80;
GetChannelMessages get_channel_messages = 81;
GetChannelMessagesResponse get_channel_messages_response = 82;
UpdateContacts update_contacts = 82;
UpdateInviteInfo update_invite_info = 83;
ShowContacts show_contacts = 84;
UpdateContacts update_contacts = 83;
UpdateInviteInfo update_invite_info = 84;
ShowContacts show_contacts = 85;
GetUsers get_users = 85;
FuzzySearchUsers fuzzy_search_users = 86;
UsersResponse users_response = 87;
RequestContact request_contact = 88;
RespondToContactRequest respond_to_contact_request = 89;
RemoveContact remove_contact = 90;
GetUsers get_users = 86;
FuzzySearchUsers fuzzy_search_users = 87;
UsersResponse users_response = 88;
RequestContact request_contact = 89;
RespondToContactRequest respond_to_contact_request = 90;
RemoveContact remove_contact = 91;
Follow follow = 91;
FollowResponse follow_response = 92;
UpdateFollowers update_followers = 93;
Unfollow unfollow = 94;
Follow follow = 92;
FollowResponse follow_response = 93;
UpdateFollowers update_followers = 94;
Unfollow unfollow = 95;
}
}
@ -299,7 +300,7 @@ message GetDocumentHighlightsResponse {
}
message Location {
Buffer buffer = 1;
uint64 buffer_id = 1;
Anchor start = 2;
Anchor end = 3;
}
@ -348,7 +349,7 @@ message OpenBufferForSymbol {
}
message OpenBufferForSymbolResponse {
Buffer buffer = 1;
uint64 buffer_id = 1;
}
message OpenBufferByPath {
@ -363,12 +364,13 @@ message OpenBufferById {
}
message OpenBufferResponse {
Buffer buffer = 1;
uint64 buffer_id = 1;
}
message CloseBuffer {
message CreateBufferForPeer {
uint64 project_id = 1;
uint64 buffer_id = 2;
uint32 peer_id = 2;
Buffer buffer = 3;
}
message UpdateBuffer {
@ -539,7 +541,7 @@ message CodeAction {
}
message ProjectTransaction {
repeated Buffer buffers = 1;
repeated uint64 buffer_ids = 1;
repeated Transaction transactions = 2;
}
@ -807,13 +809,6 @@ message Entry {
}
message Buffer {
oneof variant {
uint64 id = 1;
BufferState state = 2;
}
}
message BufferState {
uint64 id = 1;
optional File file = 2;
string base_text = 3;

2
crates/rpc/src/proto.rs
View File

@ -86,6 +86,7 @@ messages!(
(RemoveContact, Foreground),
(ChannelMessageSent, Foreground),
(CopyProjectEntry, Foreground),
(CreateBufferForPeer, Foreground),
(CreateProjectEntry, Foreground),
(DeleteProjectEntry, Foreground),
(Error, Foreground),
@ -222,6 +223,7 @@ entity_messages!(
BufferReloaded,
BufferSaved,
CopyProjectEntry,
CreateBufferForPeer,
CreateProjectEntry,
DeleteProjectEntry,
Follow,