Jeff Storck created NIFI-5373:
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Summary: Create Metrics API and default implementation
Key: NIFI-5373
URL: https://issues.apache.org/jira/browse/NIFI-5373
Project: Apache NiFi
Issue Type: Improvement
Components: Core Framework
Affects Versions: 1.7.0
Reporter: Jeff Storck
Assignee: Jeff Storck
A decoupling of the metrics library used by several reporting components by
providing a similar API in a new nifi-metrics module (under nifi-commons) will
help internalize the dependencies on the yammer/dropwizard metrics libraries
and reduce the number of dependencies that NiFi extensions need to collect
those types of metrics.
While working towards support for building NiFi on Java 10+, tests for
components that use the com.yammer.metrics:metrics-core:2.2.0 dependency are
failing due to references to internal JDK modules. These metrics libraries are
now maintained dropwizard, and a new version (4.0.0) has been released that
works with Java 10.
The public API for the metrics libraries has changed a bit, and
VirtualMachineMetrics is no longer available. NiFi will supply its own public
API for metrics that is derived from dropwizard/yammer's VirtualMachineMetrics
to minimize impact to NiFi extensions that currently use this dependency.
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