David Handermann created NIFI-16072:
---------------------------------------
Summary: Add FlowFile Event Handling to Component Metric Reporter
Key: NIFI-16072
URL: https://issues.apache.org/jira/browse/NIFI-16072
Project: Apache NiFi
Issue Type: Improvement
Components: Core Framework
Reporter: David Handermann
Assignee: David Handermann
The {{ComponentMetricReporter}} supports extensible integration at the
framework level for reporting Counters and Gauges.
Following the initial implementation added to as part of work to support Gauges
as Processor Metrics, the {{ComponentMetricReporter}} should be extended to
support optional handling of FlowFile Events, produced in {{ProcessSession}}
implementations. This addition should be backward compatible with existing
implementations of {{ComponentMetricReporter}}, having no impact on behavior
when the handling method is not implemented.
In the current framework design, the {{FlowFileEventRepository}} is not part of
the {{nifi-framework-api}} and is not open for extension at the framework
level. The corresponding {{FlowFileEvent}} interface provides the contract,
indicating counts and bytes processed, among other metrics. The
{{FlowFileEvent}} interface should be renamed to align with the source and
character of the events themselves, such as {{ProcessSessionEvent}}. This
interface should be promoted to {{nifi-framework-api}} as part of implementing
handling support in {{ComponentMetricReporter}}. With this refactoring, the
{{ComponentMetricReporter}} will be capable of processing a wider set of
available framework metrics. This approach promotes exporting selected metrics
from the framework, as opposed to providing an alternative persistence
strategy, already available through the {{StatusHistoryRepository}}.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
