[jira] [Created] (JAMES-3008) BlobId list in Cassandra - pre-write check

["Trần Tiến Đức (Jira)" <se...@james.apache.org>]

Trần Tiến Đức created JAMES-3008:
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             Summary: BlobId list in Cassandra - pre-write check
                 Key: JAMES-3008
                 URL: https://issues.apache.org/jira/browse/JAMES-3008
             Project: James Server
          Issue Type: Sub-task
            Reporter: Trần Tiến Đức


 

Introduced a `BlobIdExistantTester` API within blob-api:
{code:java}
interface BlobIdExistantTester {
 Mono<Void> add(BlobId blobId);
Mono<Boolean> testExistance(BlobId blobId);
}
{code}
 

Create a `FakeBlobIdExistantTester` that always returs false.

Create a `CassandraBlobIdExistantTester` and the related tests.

Ensure `ObjectStorageBlobDAO`:
 - Don't persist small blobs that already exist
 - Don't attempt to rename (copy) big blobs that already exist - deleting the intermediary blob supplied is enough - and faster.

when cassandra is down, just store it as normal

Propose a proof of concept regarding these changes.



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