stop exceptions from leaking on threaded work (#102)

* catch exceptions in threaded work
* don't abort all project file/chunk info fetch for single failure

1 files changed, 13 insertions, 3 deletions

diff --git a/src/zenstore/filecas.cpp b/src/zenstore/filecas.cpp
index 1c6aa539a..b3cdafd4e 100644
--- a/src/zenstore/filecas.cpp
+++ b/src/zenstore/filecas.cpp
@@ -852,15 +852,25 @@ FileCasStrategy::IterateChunks(std::span<IoHash>												 ChunkHashes,
 			if (OptionalWorkerPool)
 			{
 				WorkLatch.AddCount(1);
-				OptionalWorkerPool->ScheduleWork([&WorkLatch, &ProcessOne, ChunkIndex, &Continue]() {
+				OptionalWorkerPool->ScheduleWork([this, &WorkLatch, &ProcessOne, &ChunkHashes, ChunkIndex, &Continue]() {
 					auto _ = MakeGuard([&WorkLatch]() { WorkLatch.CountDown(); });
 					if (!Continue)
 					{
 						return;
 					}
-					if (!ProcessOne(ChunkIndex))
+					try
 					{
-						Continue = false;
+						if (!ProcessOne(ChunkIndex))
+						{
+							Continue = false;
+						}
+					}
+					catch (const std::exception& Ex)
+					{
+						ZEN_WARN("Failed iterating chunks for cas root path {}, chunk {}. Reason: '{}'",
+								 m_RootDirectory,
+								 ChunkHashes[ChunkIndex],
+								 Ex.what());
 					}
 				});
 			}