Move the coordinator to a n-processor design

coordinator/src/processors.rs

@@ -0,0 +1,49 @@
+use std::{
+  sync::Arc,
+  collections::{VecDeque, HashMap},
+};
+
+use tokio::sync::RwLock;
+
+use serai_client::primitives::NetworkId;
+
+use processor_messages::{ProcessorMessage, CoordinatorMessage};
+
+#[derive(Clone, PartialEq, Eq, Debug)]
+pub struct Message {
+  pub id: u64,
+  pub network: NetworkId,
+  pub msg: ProcessorMessage,
+}
+
+#[async_trait::async_trait]
+pub trait Processors: 'static + Send + Sync + Clone {
+  async fn send(&self, network: NetworkId, msg: CoordinatorMessage);
+  async fn recv(&mut self) -> Message;
+  async fn ack(&mut self, msg: Message);
+}
+
+// TODO: Move this to tests
+#[derive(Clone)]
+pub struct MemProcessors(pub Arc<RwLock<HashMap<NetworkId, VecDeque<CoordinatorMessage>>>>);
+impl MemProcessors {
+  #[allow(clippy::new_without_default)]
+  pub fn new() -> MemProcessors {
+    MemProcessors(Arc::new(RwLock::new(HashMap::new())))
+  }
+}
+
+#[async_trait::async_trait]
+impl Processors for MemProcessors {
+  async fn send(&self, network: NetworkId, msg: CoordinatorMessage) {
+    let mut processors = self.0.write().await;
+    let processor = processors.entry(network).or_insert_with(VecDeque::new);
+    processor.push_back(msg);
+  }
+  async fn recv(&mut self) -> Message {
+    todo!()
+  }
+  async fn ack(&mut self, _: Message) {
+    todo!()
+  }
+}