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//! HCI layer facade
use crate::hal::{AclHal, IsoHal, ScoHal};
use crate::hci::{EventRegistry, RawCommandSender};
use bt_common::GrpcFacade;
use bt_facade_helpers::RxAdapter;
use bt_facade_proto::common::Data;
use bt_facade_proto::empty::Empty;
use bt_facade_proto::hci_facade::EventRequest;
use bt_facade_proto::hci_facade_grpc::{create_hci_facade, HciFacade};
use bt_packets::hci::{
AclPacket, CommandPacket, EventCode, EventPacket, IsoPacket, LeMetaEventPacket, ScoPacket,
SubeventCode,
};
use gddi::{module, provides, Stoppable};
use grpcio::*;
use num_traits::FromPrimitive;
use tokio::sync::mpsc::{channel, Sender};
module! {
facade_module,
providers {
HciFacadeService => provide_facade,
}
}
#[provides]
async fn provide_facade(
commands: RawCommandSender,
events: EventRegistry,
acl: AclHal,
sco: ScoHal,
iso: IsoHal,
) -> HciFacadeService {
let (evt_tx, evt_rx) = channel::<EventPacket>(10);
let (le_evt_tx, le_evt_rx) = channel::<LeMetaEventPacket>(10);
HciFacadeService {
commands,
events,
evt_tx,
evt_rx: RxAdapter::new(evt_rx),
le_evt_tx,
le_evt_rx: RxAdapter::new(le_evt_rx),
acl_tx: acl.tx,
acl_rx: RxAdapter::from_arc(acl.rx),
sco_tx: sco.tx,
sco_rx: RxAdapter::from_arc(sco.rx),
iso_tx: iso.tx,
iso_rx: RxAdapter::from_arc(iso.rx),
}
}
/// HCI layer facade service
#[allow(missing_docs)]
#[derive(Clone, Stoppable)]
pub struct HciFacadeService {
pub commands: RawCommandSender,
events: EventRegistry,
evt_tx: Sender<EventPacket>,
pub evt_rx: RxAdapter<EventPacket>,
le_evt_tx: Sender<LeMetaEventPacket>,
pub le_evt_rx: RxAdapter<LeMetaEventPacket>,
pub acl_tx: Sender<AclPacket>,
pub acl_rx: RxAdapter<AclPacket>,
pub sco_tx: Sender<ScoPacket>,
pub sco_rx: RxAdapter<ScoPacket>,
pub iso_tx: Sender<IsoPacket>,
pub iso_rx: RxAdapter<IsoPacket>,
}
impl HciFacadeService {
/// Register for the event & plug in the channel to get them back on
pub async fn register_event(&mut self, code: u32) {
self.events.register(EventCode::from_u32(code).unwrap(), self.evt_tx.clone()).await;
}
/// Register for the le event & plug in the channel to get them back on
pub async fn register_le_event(&mut self, code: u32) {
self.events
.register_le(SubeventCode::from_u32(code).unwrap(), self.le_evt_tx.clone())
.await;
}
}
impl GrpcFacade for HciFacadeService {
fn into_grpc(self) -> grpcio::Service {
create_hci_facade(self)
}
}
impl HciFacade for HciFacadeService {
fn send_command(&mut self, ctx: RpcContext<'_>, mut data: Data, sink: UnarySink<Empty>) {
let packet = CommandPacket::parse(&data.take_payload()).unwrap();
let mut commands = self.commands.clone();
let evt_tx = self.evt_tx.clone();
ctx.spawn(async move {
sink.success(Empty::default()).await.unwrap();
let response = commands.send(packet).await.unwrap();
evt_tx.send(response).await.unwrap();
});
}
fn request_event(&mut self, ctx: RpcContext<'_>, req: EventRequest, sink: UnarySink<Empty>) {
let mut clone = self.clone();
ctx.spawn(async move {
clone.register_event(req.get_code()).await;
sink.success(Empty::default()).await.unwrap();
});
}
fn request_le_subevent(
&mut self,
ctx: RpcContext<'_>,
req: EventRequest,
sink: UnarySink<Empty>,
) {
let mut clone = self.clone();
ctx.spawn(async move {
clone.register_le_event(req.get_code()).await;
sink.success(Empty::default()).await.unwrap();
});
}
fn send_acl(&mut self, ctx: RpcContext<'_>, mut packet: Data, sink: UnarySink<Empty>) {
let acl_tx = self.acl_tx.clone();
ctx.spawn(async move {
acl_tx.send(AclPacket::parse(&packet.take_payload()).unwrap()).await.unwrap();
sink.success(Empty::default()).await.unwrap();
});
}
fn stream_events(&mut self, ctx: RpcContext<'_>, _req: Empty, sink: ServerStreamingSink<Data>) {
self.evt_rx.stream_grpc(ctx, sink);
}
fn stream_le_subevents(
&mut self,
ctx: RpcContext<'_>,
_req: Empty,
sink: ServerStreamingSink<Data>,
) {
self.le_evt_rx.stream_grpc(ctx, sink);
}
fn stream_acl(&mut self, ctx: RpcContext<'_>, _req: Empty, sink: ServerStreamingSink<Data>) {
self.acl_rx.stream_grpc(ctx, sink);
}
}
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