ganglia/ganglia-web — pull request #82 by jbuchbinder (2012-05-02 16:58:27+00:00)
Title: NPE avoid + start of metrics API work.

NPE avoid:
Checking d.length > 0 fails when d == null. This avoids that condition gracefully.

Metrics API:
Porting Vlad's caching mechanism to work programmatically through the standard JSON format we use in the API.