Introduction

The idea for this project was founded in the context of my thesis 2014/15. My intention was to create a cloud-application like ˋowncloudˋ with a modern framework ˋsymfonyˋ. This environment should help the project that be used and further developed by a community.

I have traced the owncloud project since the first release and like the software a lot. With my work on the open source CMF ˋSuluˋ I have noticed the power of a big community. Because of these two reasons, I have decided to combine them in my master thesis.

Struture of Work

Master Thesis will be written in german, because it costs me a lot of time to write a lot of text in a proper english. But for the community i will write the documentation in this repository in english. The important Sections of the thesis i will translate in english for the documentation.

The work is seperated in two big sections. One is a Concept section which describs important System parts like: UI, Rest API, Data Storage and Syncronization of data.

The second section contains the implementation of a prototype which is should contain:

• UI concept implementation
• Rest API for Files and User (and all the other necessary APIs to implement ui)
• Data Storage abstraction
• Implementation of one or more (perhaps for comparison) implementations of the abstraction
• Prototype software to synchronize data (or use mirall from owncloud with a webdav interface of the api)

Data Storage

Topics that should be considered in the data storage: versioning, sharing, security, compression and encoding.

• Content Repository
  • Pro: Versioning, tree like structure, ...
  • Contra: slower than other, versioning of big files and garbage collection?
• Git-Repository
  • Pro: Versioning, tree like structure, compression of data
  • Contra: Sharing of partial repositories
• Folder Structure
  • Pro: Easy to handle, one to one mapping, ...
  • Contra: Security, ...

Sync

There are several ways to Synchronize data. These three sounds interesting.

• webdav and ˋmirallˋ from owncloud
  • automatic upload changed files
• diff sync
  • sync only diff patch files
  • git like interface with commit
• git sync
  • use git to upload and versioning
  • automatic commit (or manuall)