[geclipse-dev] Replicable File Systems - proposal to the core changes

[Mateusz Pabiś <uranium@xxxxxxxxxxxxx>]

Hi * and esp. Ariel & Mathias.

During our last internal meeting here in Poznan, we found useful to add 
generic support for replicable file systems into g-Eclipse core (esp. 
for the gecl file system).

I'm about to create GUI for the replicable file system (the only one we 
support right now is LFC), but it would be nice to let the third-party 
plugins also take advantage of the work already done.

The abstraction would consist of:
- IReplicableStore,
  - public boolean isReplicable();
  - public void addReplica( URI replicaURI ) throws CoreException;
  - public void delReplica( URI replicaURI ) throws CoreException;
  - public URI[] listReplicas() throws CoreException;
  - public String[] listReplicasHosts() throws CoreException;

- IReplicableFileSystem:
  - boolean isReplicable(); // does file system support replication?
  - URI getDefaultReplicaURI; // get default location where replicas 
will be created

- GUI components:
  - replicas view
  - preferences page
  - context menu actions

The latter two would be extensible by the third-party plugins.

I created first draft of the abstraction of replicable file store and 
publish it at:
eu.geclipse.efs.lgp.IReplicableStore
the location will change depends on how we decide.

The changes would involve some changes to the gecl file store and file 
system, ie. to delegate this methods to the underlying file system if 
the latter supports it.

Please let me know what you think about it.

--
Mateusz Pabiś