feat(net) Add TransactionsManager Metrics (#769)

* Added TransactionsManager Metrics

* Remove tracking of peers

* Add propagated_transactions

crates/net/network/src/metrics.rs

@@ -32,3 +32,11 @@ pub struct NetworkMetrics {
     /// Number of invalid/malformed messages received from peers
     pub(crate) invalid_messages_received: Counter,
 }
+
+/// Metrics for the TransactionManager
+#[derive(Metrics)]
+#[metrics(scope = "network")]
+pub struct TransactionsManagerMetrics {
+    /// Total number of propagated transactions
+    pub(crate) propagated_transactions: Counter,
+}

crates/net/network/src/transactions.rs

@@ -4,6 +4,7 @@ use crate::{
     cache::LruCache,
     manager::NetworkEvent,
     message::{PeerRequest, PeerRequestSender},
+    metrics::TransactionsManagerMetrics,
     network::NetworkHandleMessage,
     peers::ReputationChangeKind,
     NetworkHandle,
@@ -101,6 +102,8 @@ pub struct TransactionsManager<Pool> {
     pending_transactions: ReceiverStream<TxHash>,
     /// Incoming events from the [`NetworkManager`](crate::NetworkManager).
     transaction_events: UnboundedReceiverStream<NetworkTransactionEvent>,
+    /// TransactionsManager metrics
+    metrics: TransactionsManagerMetrics,
 }
 
 impl<Pool: TransactionPool> TransactionsManager<Pool> {
@@ -130,6 +133,7 @@ impl<Pool: TransactionPool> TransactionsManager<Pool> {
             command_rx: UnboundedReceiverStream::new(command_rx),
             pending_transactions: ReceiverStream::new(pending),
             transaction_events: UnboundedReceiverStream::new(from_network),
+            metrics: Default::default(),
         }
     }
 }
@@ -235,6 +239,9 @@ where
             }
         }
 
+        // Update propagated transactions metrics
+        self.metrics.propagated_transactions.increment(propagated.0.len() as u64);
+
         propagated
     }
 

docs/design/metrics.md

@@ -89,6 +89,7 @@ This list may be non-exhaustive.
 - `network.total_incoming_connections`: Total number of incoming connections handled
 - `network.total_outgoing_connections`: Total number of outgoing connections established
 - `network.invalid_messages_received`: Number of invalid/malformed messages received from peers
+- `network.propagated_transactions`: Total number of propagated transactions
 
 [metrics]: https://docs.rs/metrics
 [metrics.Key]: https://docs.rs/metrics/latest/metrics/struct.Key.html