Make transaction pool prune transactions only of canonical blocks (#6123)

* Make tx pool aware of retracted fork blocks

* Make it compile

* Update client/transaction-pool/src/lib.rs

Co-authored-by: Nikolay Volf <nikvolf@gmail.com>

* Fix doc test

* Simplify the implementation

* Send tree route as arc to prevent heavy clones

* Switch to use `ExtrinsicHash` to make it more clear

* Fix benchmark

Co-authored-by: Nikolay Volf <nikvolf@gmail.com>

substrate/bin/node/cli/src/service.rs

@@ -53,12 +53,16 @@ macro_rules! new_full_start {
 			.with_select_chain(|_config, backend| {
 				Ok(sc_consensus::LongestChain::new(backend.clone()))
 			})?
-			.with_transaction_pool(|config, client, _fetcher, prometheus_registry| {
-				let pool_api = sc_transaction_pool::FullChainApi::new(client.clone());
+			.with_transaction_pool(|builder| {
+				let pool_api = sc_transaction_pool::FullChainApi::new(
+					builder.client().clone(),
+				);
+				let config = builder.config();
+
 				Ok(sc_transaction_pool::BasicPool::new(
-					config,
+					config.transaction_pool.clone(),
 					std::sync::Arc::new(pool_api),
-					prometheus_registry,
+					builder.prometheus_registry(),
 				))
 			})?
 			.with_import_queue(|
@@ -323,12 +327,18 @@ pub fn new_light(config: Configuration)
 		.with_select_chain(|_config, backend| {
 			Ok(LongestChain::new(backend.clone()))
 		})?
-		.with_transaction_pool(|config, client, fetcher, prometheus_registry| {
-			let fetcher = fetcher
+		.with_transaction_pool(|builder| {
+			let fetcher = builder.fetcher()
 				.ok_or_else(|| "Trying to start light transaction pool without active fetcher")?;
-			let pool_api = sc_transaction_pool::LightChainApi::new(client.clone(), fetcher.clone());
+			let pool_api = sc_transaction_pool::LightChainApi::new(
+				builder.client().clone(),
+				fetcher,
+			);
 			let pool = sc_transaction_pool::BasicPool::with_revalidation_type(
-				config, Arc::new(pool_api), prometheus_registry, sc_transaction_pool::RevalidationType::Light,
+				builder.config().transaction_pool.clone(),
+				Arc::new(pool_api),
+				builder.prometheus_registry(),
+				sc_transaction_pool::RevalidationType::Light,
 			);
 			Ok(pool)
 		})?
@@ -481,7 +491,7 @@ mod tests {
 						ChainEvent::NewBlock {
 							is_new_best: true,
 							id: parent_id.clone(),
-							retracted: vec![],
+							tree_route: None,
 							header: parent_header.clone(),
 						},
 					)