[jira] [Created] (USERGRID-1283) Improve ServiceManager.init() start-up logic

["David Johnson (JIRA)" <ji...@apache.org>]

David Johnson created USERGRID-1283:
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             Summary: Improve ServiceManager.init() start-up logic
                 Key: USERGRID-1283
                 URL: https://issues.apache.org/jira/browse/USERGRID-1283
             Project: Usergrid
          Issue Type: Improvement
            Reporter: David Johnson


Sometimes on Usergrid startup there is a failure contacting Cassandra, either an immediate communications failure or a time-out.

In some cases when this happens, the ServiceManager.init() method cannot retrieve the internal Management Application that holds information about Usergrid orgs, app and admin users.  

We added some retry logic to the ServiceManager.init() method, which is not an ideal fix because that method is also invoked in processing of HTTP requests.  Problem is, if the the retries do not work we end up with an instance of Usergrid that is alive and able to respond to /status requests, but everything else fails.

We should fix this by:

1) Moving the Management App lookup (and retry logic) to a much earlier point in the startup process. 

2) Caching the Management App in some place where all threads can get it. This cache should never be allowed to be null.  We always need to be able to fall back to a recent version of the Management App





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