[Multitenant] S3 multitenancy: prefix

[Arsnael]

Implement the prefix implementation for S3 blobstore multitenancy.

Within BlobStoreDAO, when using the prefix mode, derive the object key within S3 adding the prefix as needed.

For example: tenant/abc

Note: This interact with the GC!!! We shall make sure the GC, when listing, only takes the last part of the s3Key IE given prefix/ABC the GC only uses ABC as a blobID.

DoD: Integration tests

[vttranlina]

Note: This interact with the GC!!! We shall make sure the GC, when listing, only takes the last part of the s3Key IE given prefix/ABC the GC only uses ABC as a blobID.

If I understand correctly:

• During blobStoreDAO.save, when input is Bucket(bucketName = "bucket1", Optional<Tenant> = "tenant1"), BlobId("abc") , the data will be saved in S3 as: bucket = bucket1 and object = "tenant1/abc".

• When calling the BloomFilterGCAlgorithm#gc method, the blobStoreDAO.listBlobs("bucket1") will return BlobId("tenant1/abc").

• Then extract this as: bucket = Bucket("bucket1", "tenant1") and blobIdWillGc = BlobId("abc").

• Finally, use these values in blobStoreDAO.delete(bucket, blobIdWillGc).

Is this correct?

[quantranhong1999]

During blobStoreDAO.save, when input is Bucket(bucketName = "bucket1", Optional = "tenant1"), BlobId("abc") , the data will be saved in S3 as: bucket = bucket1 and object = "tenant1/abc".
When calling the BloomFilterGCAlgorithm#gc method, the blobStoreDAO.listBlobs("bucket1") will return BlobId("tenant1/abc").

BlobId("abc") and BlobId("tenant1/abc") points to the same blob?