SERVER-39796 Make the transaction history iterator virtualizable, and make it available from

             the OplogInterface used in rollback.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/mongo/db/repl/oplog_interface_local.cpp b/src/mongo/db/repl/oplog_interface_local.cpp
index b44baf7d1c8..1d79763f37d 100644
--- a/src/mongo/db/repl/oplog_interface_local.cpp
+++ b/src/mongo/db/repl/oplog_interface_local.cpp
@@ -100,6 +100,11 @@ std::unique_ptr<OplogInterface::Iterator> OplogInterfaceLocal::makeIterator() co
     return std::unique_ptr<OplogInterface::Iterator>(new OplogIteratorLocal(_opCtx));
 }
 
+std::unique_ptr<TransactionHistoryIteratorBase> OplogInterfaceLocal::makeTransactionHistoryIterator(
+    const OpTime& startingOpTime) const {
+    return std::make_unique<TransactionHistoryIterator>(startingOpTime);
+}
+
 HostAndPort OplogInterfaceLocal::hostAndPort() const {
     return {getHostNameCached(), serverGlobalParams.port};
 }