Implemented Flush() operation for CID/CAS store interfaces

2 files changed, 6 insertions, 2 deletions

diff --git a/zenstore/include/zenstore/CAS.h b/zenstore/include/zenstore/CAS.h
index b4c97a6fd..f01b562cb 100644
--- a/zenstore/include/zenstore/CAS.h
+++ b/zenstore/include/zenstore/CAS.h
@@ -52,6 +52,7 @@ public:
 	virtual void		 Initialize(const CasStoreConfiguration& Config)	 = 0;
 	virtual InsertResult InsertChunk(IoBuffer Data, const IoHash& ChunkHash) = 0;
 	virtual IoBuffer	 FindChunk(const IoHash& ChunkHash)					 = 0;
+	virtual void		 Flush()											 = 0;
 
 protected:
 	CasStoreConfiguration m_Config;
diff --git a/zenstore/include/zenstore/cidstore.h b/zenstore/include/zenstore/cidstore.h
index e365b198e..edc3f5582 100644
--- a/zenstore/include/zenstore/cidstore.h
+++ b/zenstore/include/zenstore/cidstore.h
@@ -17,8 +17,10 @@ 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.
+ * literal hash. This class maps uncompressed hashes to compressed hashes and may
+ * be used to deal with other kinds of indirections in the future. For example, if we want
+ * to support chunking then a CID may represent a list of chunks which could be concatenated
+ * to form the referenced chunk.
  *
  */
 class CidStore
@@ -29,6 +31,7 @@ public:
 
 	void	 AddCompressedCid(const IoHash& DecompressedId, const IoHash& Compressed);
 	IoBuffer FindChunkByCid(const IoHash& DecompressedId);
+	void	 Flush();
 
 private:
 	struct CidState;