146 lines
4.6 KiB
Rust
146 lines
4.6 KiB
Rust
use crate::{
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grpc::request_tracker::RequestTracker,
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peers::operator::{OutOfBand, OperatorConnection, OperatorSession},
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};
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use arbiter_proto::{
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proto::operator::{
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OperatorRequest, OperatorResponse,
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operator_request::Payload as OperatorRequestPayload,
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operator_response::Payload as OperatorResponsePayload,
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},
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transport::{Error as TransportError, Receiver, Sender, grpc::GrpcBi},
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};
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use async_trait::async_trait;
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use kameo::actor::ActorRef;
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use tokio::sync::mpsc;
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use tonic::Status;
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use tracing::{error, info, warn};
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mod auth;
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mod evm;
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mod inbound;
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mod outbound;
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mod sdk_client;
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mod vault;
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mod vault_gate;
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pub struct OutOfBandAdapter(mpsc::Sender<OutOfBand>);
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#[async_trait]
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impl Sender<OutOfBand> for OutOfBandAdapter {
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async fn send(&mut self, item: OutOfBand) -> Result<(), TransportError> {
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self.0.send(item).await.map_err(|e| {
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warn!(error = ?e, "Failed to send out-of-band message");
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TransportError::ChannelClosed
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})
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}
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}
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async fn dispatch_loop(
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mut bi: GrpcBi<OperatorRequest, OperatorResponse>,
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actor: ActorRef<OperatorSession>,
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mut receiver: mpsc::Receiver<OutOfBand>,
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mut request_tracker: RequestTracker,
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) {
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loop {
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tokio::select! {
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oob = receiver.recv() => {
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let Some(oob) = oob else {
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warn!("Out-of-band message channel closed");
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return;
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};
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let payload = sdk_client::out_of_band_payload(oob);
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if bi.send(Ok(OperatorResponse { id: None, payload: Some(payload) })).await.is_err() {
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return;
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}
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}
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message = bi.recv() => {
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let Some(message) = message else { return; };
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let conn = match message {
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Ok(conn) => conn,
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Err(err) => {
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warn!(error = ?err, "Failed to receive operator request");
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return;
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}
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};
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let request_id = match request_tracker.request(conn.id) {
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Ok(id) => id,
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Err(err) => {
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let _ = bi.send(Err(err)).await;
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return;
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}
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};
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let Some(payload) = conn.payload else {
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let _ = bi.send(Err(Status::invalid_argument("Missing operator request payload"))).await;
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return;
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};
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match dispatch_inner(&actor, payload).await {
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Ok(Some(response)) => {
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if bi.send(Ok(OperatorResponse {
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id: Some(request_id),
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payload: Some(response),
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})).await.is_err() {
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return;
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}
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}
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Ok(None) => {}
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Err(status) => {
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error!(?status, "Failed to process operator request");
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let _ = bi.send(Err(status)).await;
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return;
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}
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}
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}
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}
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}
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}
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async fn dispatch_inner(
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actor: &ActorRef<OperatorSession>,
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payload: OperatorRequestPayload,
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) -> Result<Option<OperatorResponsePayload>, Status> {
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match payload {
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OperatorRequestPayload::Vault(req) => vault::dispatch(actor, req).await,
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OperatorRequestPayload::Evm(req) => evm::dispatch(actor, req).await,
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OperatorRequestPayload::SdkClient(req) => sdk_client::dispatch(actor, req).await,
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OperatorRequestPayload::Auth(..) => {
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warn!("Unsupported post-auth operator auth request");
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Err(Status::invalid_argument("Unsupported operator request"))
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}
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}
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}
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pub async fn start(
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mut conn: OperatorConnection,
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mut bi: GrpcBi<OperatorRequest, OperatorResponse>,
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) {
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let mut request_tracker = RequestTracker::default();
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let (oob_sender, oob_receiver) = mpsc::channel(16);
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let oob_adapter = OutOfBandAdapter(oob_sender);
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let actor = {
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let transport = auth::AuthTransportAdapter::new(&mut bi, &mut request_tracker);
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match crate::peers::operator::start(&mut conn, transport, Box::new(oob_adapter)).await {
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Ok(actor) => actor,
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Err(e) => {
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warn!(error = ?e, "Operator connection failed");
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return;
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}
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}
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};
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info!("Operator session established");
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dispatch_loop(bi, actor.clone(), oob_receiver, request_tracker).await;
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actor.kill();
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}
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