feat: add function to create all channels

crates/mempool_node/src/communication.rs

@@ -0,0 +1,38 @@
+use starknet_mempool_types::communication::MempoolRequestAndResponseSender;
+use tokio::sync::mpsc::{channel, Receiver, Sender};
+
+pub struct ComponentCommunication<T: Send + Sync> {
+    tx: Sender<T>,
+    rx: Option<Receiver<T>>,
+}
+
+impl<T: Send + Sync> ComponentCommunication<T> {
+    fn get_tx(&self) -> Sender<T> {
+        self.tx.clone()
+    }
+    fn get_rx(&mut self) -> Receiver<T> {
+        self.rx.take().expect("Receiver already taken")
+    }
+}
+
+pub struct MempoolNodeCommunication {
+    mempool_channel: ComponentCommunication<MempoolRequestAndResponseSender>,
+}
+
+impl MempoolNodeCommunication {
+    pub fn get_mempool_tx(&self) -> Sender<MempoolRequestAndResponseSender> {
+        self.mempool_channel.get_tx()
+    }
+    pub fn get_mempool_rx(&mut self) -> Receiver<MempoolRequestAndResponseSender> {
+        self.mempool_channel.get_rx()
+    }
+}
+
+pub fn create_node_channels() -> MempoolNodeCommunication {
+    const MEMPOOL_INVOCATIONS_QUEUE_SIZE: usize = 32;
+    let (tx_mempool, rx_mempool) =
+        channel::<MempoolRequestAndResponseSender>(MEMPOOL_INVOCATIONS_QUEUE_SIZE);
+    MempoolNodeCommunication {
+        mempool_channel: ComponentCommunication { tx: tx_mempool, rx: Some(rx_mempool) },
+    }
+}