[SLIDER-579] Add "slider lookup operations" & --out args to get the app reports of launched apps

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Slider 0.60
• Component/s: client, test
• Sprint: slider June 2, Slider July #1, Slider August #1, Slider August #2, Slider September #1, Slider October #1
• Assignee: Steve Loughran
• Reporter: Steve Loughran
• Created: 29/Oct/14 14:58
• Updated: 31/Oct/14 14:25
• Resolved: 31/Oct/14 14:25

Description

add a way for functional tests to get the app Id and app report of a launched app -reliably.

Currently the exists/list operations are approximate as they are looking for "an instance" rather than the specific one launched.

Proposed

1. add a JSON-serialized form of an app report
2. add a --out operation on the create/start operations to save this to a file (Before entering any --wait action)
3. add a lookup --id <appid> --out <file> action to look up any YARN app and generate the report.

Test runs can then

• get the app id of the launched app
• retrieve & parse the app report
• use that in failure messages