NIFI-15979 Wire Connector MDC and reporting-task visibility

[kevdoran]

Summary

NIFI-15978

Note: This is ready to review, but leaving in draft status until apache/nifi-api#89 is merged and NiFi is bumped to the latest nifi-api version.

• StandardConnectorNode implements GroupedComponent and assembles framework MDC keys (connectorId/Name/Component/BundleGroup/Artifact/Version) plus connector-supplied custom attributes
• StandardProcessGroup merges connector attributes into getLoggingAttributes, cascades to descendants, and inherits from the new parent on setParent.
• ConnectorInitializationContext.setLoggingAttributes is forwarded into the connector node via a new builder consumer; ExtensionBuilder late-binds StandardLoggingContext to the connector.
• AbstractEventAccess snapshots loggingAttributes onto ProcessGroupStatus; StandardEventAccess implements EventAccess.getConnectorStatuses via ConnectorRepository so reporting tasks see connector-managed flows.

Includes unit tests and Administration Guide updates.

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  • JDK 21
  • JDK 25

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