Backlog scan scanned event

nano/lib/stats_enums.hpp

@@ -419,6 +419,7 @@ enum class detail
 	activate_failed,
 	activate_skip,
 	activate_full,
+	scanned,
 
 	// active
 	insert,

nano/node/backlog_scan.cpp

@@ -128,12 +128,15 @@ void nano::backlog_scan::activate (secure::transaction const & transaction, nano
 	auto const maybe_conf_info = ledger.store.confirmation_height.get (transaction, account);
 	auto const conf_info = maybe_conf_info.value_or (nano::confirmation_height_info{});
 
+	activated_info info{ account, account_info, conf_info };
+
+	stats.inc (nano::stat::type::backlog_scan, nano::stat::detail::scanned);
+	scanned.notify (transaction, info);
+
 	// If conf info is empty then it means then it means nothing is confirmed yet
 	if (conf_info.height < account_info.block_count)
 	{
 		stats.inc (nano::stat::type::backlog_scan, nano::stat::detail::activated);
-
-		activated_info info{ account, account_info, conf_info };
 		activated.notify (transaction, info);
 	}
 }

nano/node/backlog_scan.hpp

@@ -55,6 +55,7 @@ class backlog_scan final
 	 */
 	using callback_t = nano::observer_set<nano::secure::transaction const &, activated_info const &>;
 	callback_t activated;
+	callback_t scanned;
 
 private: // Dependencies
 	backlog_scan_config const & config;