Added CidStore, currently used to track relationships between compressed and uncompressed chunk hashes

This first implementation is in-memory only, persistence is next

1 files changed, 34 insertions, 0 deletions

diff --git a/zenstore/include/zenstore/cidstore.h b/zenstore/include/zenstore/cidstore.h
new file mode 100644
index 000000000..0c8f51740
--- /dev/null
+++ b/zenstore/include/zenstore/cidstore.h
@@ -0,0 +1,34 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include <tsl/robin_map.h>
+#include <zencore/iohash.h>
+
+namespace zen {
+
+class CasStore;
+class IoBuffer;
+
+/** Content Store
+ *
+ * Data in the content store is referenced by content identifiers (CIDs), rather than their
+ * literal hash. This is required to map uncompressed hashes to compressed hashes and may
+ * be used to deal with other indirections in the future.
+ *
+ */
+class CidStore
+{
+public:
+	CidStore(CasStore& InCasStore);
+	~CidStore();
+
+	void	 AddCompressedCid(const IoHash& DecompressedId, const IoHash& Compressed);
+	IoBuffer FindChunkByCid(const IoHash& DecompressedId);
+
+private:
+	CasStore&									   m_CasStore;
+	tsl::robin_map<IoHash, IoHash, IoHash::Hasher> m_CidMap;
+};
+
+}  // namespace zen