[WHIRR-246] Single place to store/load cluster state

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.5.0
• Assignee: Andrei Savu
• Reporter: David Alves
• Created: 04/Mar/11 02:04
• Updated: 02/May/13 02:29
• Resolved: 28/Apr/11 21:19

Description

Right now cluster state is written and read from the ~/.whirr/cluster-name/instances file and logic to write and update it is spread between the Service and DestroyInstanceCommand (that I know of).

Since for WHIRR-214 the file must be updated (in another class) and for WHIRR-238 an altogether different method of storing cluster state will be required I think it might be time to move the read/write state logic to its own file (or factory in the future).

I'll attach a very preliminary patch just to get some feedback.

Issue Links

• blocks: WHIRR-288 Add blob store persistence for cluster state
• blocks: WHIRR-289 Display role names in list-cluster command
• depends upon: WHIRR-173 Add ClusterAction for generic script execution