fix asserts and exceptions (#344)

* Send proper error to caller of GetChunkInfo instead of assert
* catch and handle exceptions when checking for state_marker
* properly wait for background tasks if oplop-export fails
* changelog

1 files changed, 11 insertions, 2 deletions

diff --git a/src/zenserver/zenserver.cpp b/src/zenserver/zenserver.cpp
index 6ce49b1fe..6e636611d 100644
--- a/src/zenserver/zenserver.cpp
+++ b/src/zenserver/zenserver.cpp
@@ -571,9 +571,18 @@ public:
 	void CheckStateMarker()
 	{
 		std::filesystem::path StateMarkerPath = m_DataRoot / "state_marker";
-		if (!std::filesystem::exists(StateMarkerPath))
+		try
+		{
+			if (!std::filesystem::exists(StateMarkerPath))
+			{
+				ZEN_WARN("state marker at {} has been deleted, exiting", StateMarkerPath);
+				RequestExit(1);
+				return;
+			}
+		}
+		catch (std::exception& Ex)
 		{
-			ZEN_WARN("state marker at {} has been deleted, exiting", StateMarkerPath);
+			ZEN_WARN("state marker at {} could not be checked, reason: '{}'", StateMarkerPath, Ex.what());
 			RequestExit(1);
 			return;
 		}