Hi, I have started drafting an API for the new Metrics system. The idea is to design a common API to be implemented by a "Metrics Provider".
This way we will instrument ZooKeeper code only once and the user will be able to publish metrics to his preferred system. This is the umbrella issue: https://issues.apache.org/jira/browse/ZOOKEEPER-3092 This is my proposal for the initial API, it is very simple, we can add feature as soon as we need them. https://github.com/apache/zookeeper/pull/582 I think that we can go with comments directly on the GitHub pull request if the overall approach looks good. I took these sources as base: - Prometheus Java API - Dropwizard Metrics Java API - Apache BookKeeper Stats Loggers API (which has implementations both for Prometheus and for DropWizard/Codahale) Many other Apache libraries have their own metrics plugin system We already have a feature request for an implementation on Prometheus.io https://issues.apache.org/jira/browse/ZOOKEEPER-3091 Any comment is welcome ! Enrico
