Add some logs, fix reorg import. (#4250)

substrate/client/transaction-pool/graph/src/base_pool.rs

@@ -341,7 +341,7 @@ impl<Hash: hash::Hash + Member + Serialize, Ex: std::fmt::Debug> BasePool<Hash,
 		if removed.iter().any(|tx| tx.hash == hash) {
 			// We still need to remove all transactions that we promoted
 			// since they depend on each other and will never get to the best iterator.
-			self.ready.remove_invalid(&promoted);
+			self.ready.remove_subtree(&promoted);
 
 			debug!(target: "txpool", "[{:?}] Cycle detected, bailing.", hash);
 			return Err(error::Error::CycleDetected)
@@ -403,7 +403,7 @@ impl<Hash: hash::Hash + Member + Serialize, Ex: std::fmt::Debug> BasePool<Hash,
 				});
 
 			if let Some(minimal) = minimal {
-				removed.append(&mut self.remove_invalid(&[minimal.transaction.hash.clone()]))
+				removed.append(&mut self.remove_subtree(&[minimal.transaction.hash.clone()]))
 			} else {
 				break;
 			}
@@ -423,7 +423,7 @@ impl<Hash: hash::Hash + Member + Serialize, Ex: std::fmt::Debug> BasePool<Hash,
 				});
 
 			if let Some(minimal) = minimal {
-				removed.append(&mut self.remove_invalid(&[minimal.transaction.hash.clone()]))
+				removed.append(&mut self.remove_subtree(&[minimal.transaction.hash.clone()]))
 			} else {
 				break;
 			}
@@ -440,8 +440,8 @@ impl<Hash: hash::Hash + Member + Serialize, Ex: std::fmt::Debug> BasePool<Hash,
 	/// they were part of a chain, you may attempt to re-import them later.
 	/// NOTE If you want to remove ready transactions that were already used
 	/// and you don't want them to be stored in the pool use `prune_tags` method.
-	pub fn remove_invalid(&mut self, hashes: &[Hash]) -> Vec<Arc<Transaction<Hash, Ex>>> {
-		let mut removed = self.ready.remove_invalid(hashes);
+	pub fn remove_subtree(&mut self, hashes: &[Hash]) -> Vec<Arc<Transaction<Hash, Ex>>> {
+		let mut removed = self.ready.remove_subtree(hashes);
 		removed.extend(self.future.remove(hashes));
 		removed
 	}
@@ -454,7 +454,7 @@ impl<Hash: hash::Hash + Member + Serialize, Ex: std::fmt::Debug> BasePool<Hash,
 	/// Prunes transactions that provide given list of tags.
 	///
 	/// This will cause all transactions that provide these tags to be removed from the pool,
-	/// but unlike `remove_invalid`, dependent transactions are not touched.
+	/// but unlike `remove_subtree`, dependent transactions are not touched.
 	/// Additional transactions from future queue might be promoted to ready if you satisfy tags
 	/// that the pool didn't previously know about.
 	pub fn prune_tags(&mut self, tags: impl IntoIterator<Item=Tag>) -> PruneStatus<Hash, Ex> {
@@ -905,7 +905,7 @@ mod tests {
 		assert_eq!(pool.future.len(), 1);
 
 		// when
-		pool.remove_invalid(&[6, 1]);
+		pool.remove_subtree(&[6, 1]);
 
 		// then
 		assert_eq!(pool.ready().count(), 1);

substrate/client/transaction-pool/graph/src/pool.rs

@@ -283,7 +283,7 @@ impl<B: ChainApi> Pool<B> {
 		tags: impl IntoIterator<Item=Tag>,
 		known_imported_hashes: impl IntoIterator<Item=ExHash<B>> + Clone,
 	) -> impl Future<Output=Result<(), B::Error>> {
-		log::trace!(target: "txpool", "Pruning at {:?}", at);
+		log::debug!(target: "txpool", "Pruning at {:?}", at);
 		// Prune all transactions that provide given tags
 		let prune_status = match self.validated_pool.prune_tags(tags) {
 			Ok(prune_status) => prune_status,
@@ -317,7 +317,7 @@ impl<B: ChainApi> Pool<B> {
 	}
 
 	/// Return an event stream of notifications for when transactions are imported to the pool.
-	/// 
+	///
 	/// Consumers of this stream should use the `ready` method to actually get the
 	/// pending transactions in the right order.
 	pub fn import_notification_stream(&self) -> EventStream {
@@ -329,7 +329,7 @@ impl<B: ChainApi> Pool<B> {
 		self.validated_pool.on_broadcasted(propagated)
 	}
 
-	/// Remove from the pool.
+	/// Remove invalid transactions from the pool.
 	pub fn remove_invalid(&self, hashes: &[ExHash<B>]) -> Vec<TransactionFor<B>> {
 		self.validated_pool.remove_invalid(hashes)
 	}

substrate/client/transaction-pool/graph/src/ready.rs

@@ -230,12 +230,12 @@ impl<Hash: hash::Hash + Member + Serialize, Ex> ReadyTransactions<Hash, Ex> {
 		}).collect()
 	}
 
-	/// Removes invalid transactions from the ready pool.
+	/// Removes a subtree of transactions from the ready pool.
 	///
 	/// NOTE removing a transaction will also cause a removal of all transactions that depend on that one
 	/// (i.e. the entire subgraph that this transaction is a start of will be removed).
 	/// All removed transactions are returned.
-	pub fn remove_invalid(&mut self, hashes: &[Hash]) -> Vec<Arc<Transaction<Hash, Ex>>> {
+	pub fn remove_subtree(&mut self, hashes: &[Hash]) -> Vec<Arc<Transaction<Hash, Ex>>> {
 		let mut removed = vec![];
 		let mut to_remove = hashes.iter().cloned().collect::<Vec<_>>();
 

substrate/client/transaction-pool/graph/src/validated_pool.rs

@@ -215,9 +215,9 @@ impl<B: ChainApi> ValidatedPool<B> {
 				let hash = updated_transactions.keys().next().cloned().expect("transactions is not empty; qed");
 
 				// note we are not considering tx with hash invalid here - we just want
-				// to remove it along with dependent transactions and `remove_invalid()`
+				// to remove it along with dependent transactions and `remove_subtree()`
 				// does exactly what we need
-				let removed = pool.remove_invalid(&[hash.clone()]);
+				let removed = pool.remove_subtree(&[hash.clone()]);
 				for removed_tx in removed {
 					let removed_hash = removed_tx.hash.clone();
 					let updated_transaction = updated_transactions.remove(&removed_hash);
@@ -451,13 +451,23 @@ impl<B: ChainApi> ValidatedPool<B> {
 		}
 	}
 
-	/// Remove from the pool.
+	/// Remove a subtree of transactions from the pool and mark them invalid.
+	///
+	/// The transactions passed as an argument will be additionally banned
+	/// to prevent them from entering the pool right away.
+	/// Note this is not the case for the dependent transactions - those may
+	/// still be valid so we want to be able to re-import them.
 	pub fn remove_invalid(&self, hashes: &[ExHash<B>]) -> Vec<TransactionFor<B>> {
+		// early exit in case there is no invalid transactions.
+		if hashes.is_empty() {
+			return vec![]
+		}
+
 		// temporarily ban invalid transactions
 		debug!(target: "txpool", "Banning invalid transactions: {:?}", hashes);
 		self.rotator.ban(&time::Instant::now(), hashes.iter().cloned());
 
-		let invalid = self.pool.write().remove_invalid(hashes);
+		let invalid = self.pool.write().remove_subtree(hashes);
 
 		let mut listener = self.listener.write();
 		for tx in &invalid {