Handle OOM and OOD more gracefully to not spam Sentry with error reports (#434)

- Improvement: Catch Out Of Memory and Out Of Disk exceptions and report back to reqeuster without reporting an error to Sentry
- Improvement: If creating bucket fails when storing and item in the structured cache, log a warning and propagate error to requester without reporting an error to Sentry
- Improvement: Make an explicit flush of the active block written to in blockstore flush
- Improvement: Make sure cache and cas MakeIndexSnapshot does not throw exception on failure which would cause and abnormal termniation at exit

1 files changed, 58 insertions, 0 deletions

diff --git a/src/zencore/except.cpp b/src/zencore/except.cpp
index 65f5ebc62..f98743ea9 100644
--- a/src/zencore/except.cpp
+++ b/src/zencore/except.cpp
@@ -110,4 +110,62 @@ ThrowOutOfMemory(std::string_view Message)
 }
 #endif
 
+#if ZEN_PLATFORM_WINDOWS
+bool
+IsOOM(const std::system_error& SystemError)
+{
+	switch (SystemError.code().value())
+	{
+		case ERROR_NOT_ENOUGH_MEMORY:
+		case ERROR_OUTOFMEMORY:
+		case ERROR_PAGEFILE_QUOTA_EXCEEDED:
+		case ERROR_NONPAGED_SYSTEM_RESOURCES:
+		case ERROR_PAGED_SYSTEM_RESOURCES:
+		case ERROR_PAGEFILE_QUOTA:
+		case ERROR_COMMITMENT_LIMIT:
+			return true;
+		default:
+			return false;
+	}
+}
+bool
+IsOOD(const std::system_error& SystemError)
+{
+	switch (SystemError.code().value())
+	{
+		case ERROR_HANDLE_DISK_FULL:
+		case ERROR_DISK_FULL:
+		case ERROR_DISK_RESOURCES_EXHAUSTED:
+		case ERROR_DISK_QUOTA_EXCEEDED:
+			return true;
+		default:
+			return false;
+	}
+}
+#else
+bool
+IsOOM(const std::system_error& SystemError)
+{
+	switch (SystemError.code().value())
+	{
+		case ENOMEM:
+			return true;
+		default:
+			return false;
+	}
+}
+bool
+IsOOD(const std::system_error& SystemError)
+{
+	switch (SystemError.code().value())
+	{
+		case ENOSPC:
+		case EDQUOT:
+			return true;
+		default:
+			return false;
+	}
+}
+#endif
+
 }  // namespace zen