Chris Riccomini created SAMZA-105:
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Summary: Write a JMX scraper
Key: SAMZA-105
URL: https://issues.apache.org/jira/browse/SAMZA-105
Project: Samza
Issue Type: Bug
Components: metrics
Affects Versions: 0.6.0
Reporter: Chris Riccomini
Samza currently has a JmxReporter, which exposes Samza's metrics via JMX, so
they can be viewed in things like VisualVM, JConsole, etc. It would be nice to
have the inverse of this, as well: the ability to scrape metrics from JMX
beans, and inject them into Samza's metrics framework.
The main motivation for adding this support is to allow us to collect metrics
for third party libraries that don't use Samza's metrics framework. Since most
libraries expose information via JMX, it's can be used as a common bridge that
we can pull metrics out of.
One way to implement this would be to write a JmxMetricsScraper that implements
TaskLifecycleListener. In the beforeInit method, it could grab the metrics
registry and config objects, connect to the local process' JMX beans, and start
scraping the relevant metrics.
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