Akubra Project

Introduction

The Akubra Project is a new effort to provide a pluggable file storage interface that can be adapted to almost any storage subsystem. Akubra supports both ordinary and transactional storage systems, but makes simplifying assumptions in order to achieve a high level of interoperability between storage systems:

In Akubra:

• a Blob is a finite-length bitstream with an id (a URI)
• a Blob Store is primarily concerned with providing read/write access to blobs.

News

• November 27th, 2009 - Akubra 0.2 released.  This release:
  • Uses the latest version of Derby for the akubra-txn implementation
  • Repackages the Akubra classes under org.akubraproject
• April 30th, 2009 - Akubra 0.1 released.

Downloads

• Core API
  • akubra-core-0.2.jar - The Core Akubra API [javadocs]
• Base Implementations
  • akubra-fs-0.2.jar - Simple filesystem implementation (non-transactional) [javadocs]
  • akubra-mem-0.2.jar - In-memory implementation (non-transactional) [javadocs]
  • akubra-www-0.2.jar - Web implementation (non-transactional, read-only) [javadocs]
• Layering Implementations
  • akubra-map-0.2.jar- Wraps an existing BlobStore to provide a blob id mapping layer [javadocs]
  • akubra-mux-0.2.jar - Provides a unified view over any number of backing stores [javadocs]
  • akubra-qsc-0.2.jar - Provides quiescing capability to a BlobStore [javadocs]
  • akubra-rmi-0.2.jar - Allows a BlobStore to be exposed and accessed remotely, via RMI [javadocs]
  • akubra-txn-0.2.jar - Uses Derby to provide transactional capabilities over a non-transactional store [javadocs]
• Utilities
  • akubra-tck-0.2.jar - Technology Compatibility Kit for Akubra implementations [javadocs]

Documentation

• Requirements and Goals
• Analysis of Existing Approaches
• Latest API Documentation (Javadocs)
• Latest Maven Site

Community

We invite you browse our mailing lists, or subscribe and join the conversation:

• Akubra Users [subscribe via google or via email | view ]
  General information, questions, release announcements, etc.
• Akubra Developers [subscribe via google or via email | view | original list archive ]
  Discussions pertaining the development of Akubra.
• Akubra Codewatch [subscribe via google or via email | view ]
  Intended for developers, this read-only list provides automatic notification of commits to the source code repository.

Source Code

You may download or browse the source code in our subversion repository at the following locations.

• Download: svn co https://fedora-commons.org/svn/root/akubra/trunk
• Browse: https://fedora-commons.org/svn/view/akubra/trunk

Note: You will need JDK 1.6+ and maven to build.

Coding conventions for this project are currently documented here (TODO:migrate here, update @inheritDoc stuff).

Issue Tracking

Bugs and features for this project will be tracked here.