Handle abrupt shutdown better.

src/raft_server.cpp

@@ -146,7 +146,7 @@ void ReplicationState::write(http_req* request, http_res* response) {
 }
 
 void ReplicationState::write_to_leader(http_req *request, http_res *response) const {
-    if(node->leader_id().is_empty()) {
+    if(!node || node->leader_id().is_empty()) {
         // Handle no leader scenario
         LOG(ERROR) << "Rejecting write: could not find a leader.";
 
@@ -302,11 +302,6 @@ void ReplicationState::on_apply(braft::Iterator& iter) {
             delete request;
             delete response;
         }
-
-        if(shut_down) {
-            iter.set_error_and_rollback();
-            return;
-        }
     }
 }
 

src/typesense_server_utils.cpp

@@ -263,7 +263,7 @@ int start_raft_server(ReplicationState& replication_state, const std::string& st
 
     // Wait until 'CTRL-C' is pressed. then Stop() and Join() the service
     size_t raft_counter = 0;
-    while (!brpc::IsAskedToQuit() && !quit_raft_service.load()) {
+    while (!quit_raft_service.load()) {
         // post-increment to ensure that we refresh right away on a fresh boot
         if(raft_counter++ % 10 == 0) {
             // reset peer configuration periodically to identify change in cluster membership