[S4-65] Create s4 status command

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.5.0
• Fix Version/s: 0.5.0
• Assignee: Aimee Cheng
• Reporter: Matthieu Morel
• Created: 27/Jun/12 09:27
• Updated: 16/Jul/12 14:15
• Resolved: 16/Jul/12 14:15

Description

We should have an "s4 status" command that provides nicely formatted information about the state of S4 application coordinated through a given Zookeeper ensemble.

In particular:

• which applications are deployed
• on which S4 nodes these applications are deployed
• how many S4 nodes are running, how many S4 nodes are in standby
• which streams are published, which applications are connected

The implementation would probably add a new class in the s4-tools project.