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https://jira.duraspace.org/browse/DS-1117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=24074#comment-24074
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Mark Diggory commented on DS-1117:
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Tasks to apply this solution:
1.) Create single patch to apply to trunk
2.) Review with Community
3.) Adjust Patch accordingly
4.) Commit.
Recommended timeframe to complete, (1 month)
> Pluggable Assetstore
> --------------------
>
> Key: DS-1117
> URL: https://jira.duraspace.org/browse/DS-1117
> Project: DSpace
> Issue Type: New Feature
> Components: DSpace API
> Reporter: Richard Rodgers
>
> Considerable thought, discussion, design, prototyping, etc has focused on
> what a DSpace+2.0 asset store should look like. In particular, whether and
> how such an asset store should model archival information packages (AIPs) in
> a more substantial manner than in the current architecture. This model is
> conceived as a DSpace asset store API/interface. Of course one big advantage
> of such an interface is the ease of writing implementations for different
> storage systems (file-based, grid, etc) and plugging them into DSpace.
> However, it should be noted that this benefit redounds to just having an
> interface, not having an AIP-aware one in particular.
> Modeling an AIP asset store is very important (and hard), and it has proven
> difficult to achieve consensus - and this has led to holding the benefits of
> pluggable storage for DSpace hostage to agreement on an AIP model. The work
> this page describes attempts to circumvent this problem by refactoring the
> existing asset storage system to drive a very thin API wedge between the
> storage manager and the actual storage back-end. It conspicuously does not
> attempt to model an AIP, only the low-level storage primitives. If
> successful, it should make it far easier than it is today in DSpace to attach
> different storage solutions. It should also feed the AIP asset store design
> process by providing insights into the powers and limits of different storage
> systems.
> I call this API a BitStore to emphasize that it is not an AIP model, and have
> provided a refactored BitstreamStorageManager that utilizes this interface,
> rather than the direct calls it had into the file-store or SRB store. In
> addition, I have provided 3 implementations of the interface:
> DSBitStore - this is simply the current DSpace file system store.
> SRBBitStore - the existing SRB store.
> S3BitStore - an asset store using Amazon's Simple Storage Service. NB: this
> is a commerical (not free) service
> Another advantage of this approach is modularity: we will no longer have to
> include all the code and required libraries for (e.g.) Storage Resource
> Broker unless we actually want to use it. These storage modules also present
> some new use-cases for the Add-on mechanism work, since they are optional
> modules, but not separate applications.
> Detailed notes on using each store will follow. Note that this is prototype
> code, not production quality. Feedback welcome, including other possible
> store implementations (e.g. a RBDMS store). (See the Discussion page for some
> thoughts on an RDBMS implementation.)
> See for more detail...
> https://wiki.duraspace.org/display/DSPACE/DSpace+2.0+Pluggable+Storage
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