tree 2ac69ef57af9e8e331746ee253c66ba4cb6cfe9a
parent a468e90ef17d15ef3180cdcf27c2ae64122bdfc0
author Pavlin Radoslavov <pavlin@onlab.us> 1426702326 -0700
committer Pavlin Radoslavov <pavlin@onlab.us> 1426723040 +0000

Work toward fixing ONOS-1138: Batching topo event may cause event loss

Added another metric to the onos-app-metrics-topology application
to collect and display the number and rate of the Reasons for the
Topology Events.

Example:

onos> topology-events-metrics
...
Topology Graph Event Timestamp (ms from epoch)=1426699861509
Topology Graph Events count=6 rate(events/sec) mean=0.002315 m1=0.000000 m5=0.000004 m15=0.000378
Topology Graph Reasons Event Timestamp (ms from epoch)=1426699861509
Topology Graph Reasons Events count=9 rate(events/sec) mean=0.003472 m1=0.000000 m5=0.000005 m15=0.000567

The corresponding object names in the JSON output are:
  topologyGraphReasonsEventRate
  topologyGraphReasonsEventTimestamp

Change-Id: Ib1aeb83c38b3b72d0ae8a4f49bc1e14badc0199d