Add some additional logging to availability recovery subsystem (#5345)

polkadot/node/network/availability-recovery/src/lib.rs

@@ -304,7 +304,20 @@ impl RequestChunksFromValidators {
 		sender: &mut impl SubsystemSender,
 	) {
 		let num_requests = self.get_desired_request_count(params.threshold);
-		let mut requests = Vec::with_capacity(num_requests - self.requesting_chunks.len());
+		let candidate_hash = &params.candidate_hash;
+		let already_requesting_count = self.requesting_chunks.len();
+
+		gum::debug!(
+			target: LOG_TARGET,
+			?candidate_hash,
+			?num_requests,
+			error_count= ?self.error_count,
+			total_received = ?self.total_received_responses,
+			threshold = ?params.threshold,
+			?already_requesting_count,
+			"Requesting availability chunks for a candidate",
+		);
+		let mut requests = Vec::with_capacity(num_requests - already_requesting_count);
 
 		while self.requesting_chunks.len() < num_requests {
 			if let Some(validator_index) = self.shuffling.pop_back() {
@@ -313,7 +326,7 @@ impl RequestChunksFromValidators {
 					target: LOG_TARGET,
 					?validator,
 					?validator_index,
-					candidate_hash = ?params.candidate_hash,
+					?candidate_hash,
 					"Requesting chunk",
 				);
 
@@ -447,6 +460,14 @@ impl RequestChunksFromValidators {
 			// Stop waiting for requests when we either can already recover the data
 			// or have gotten firm 'No' responses from enough validators.
 			if self.can_conclude(params) {
+				gum::debug!(
+					target: LOG_TARGET,
+					candidate_hash = ?params.candidate_hash,
+					received_chunks_count = ?self.received_chunks.len(),
+					requested_chunks_count = ?self.requesting_chunks.len(),
+					threshold = ?params.threshold,
+					"Can conclude availability for a candidate",
+				);
 				break
 			}
 		}