Rob Fellows created NIFI-16404:
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Summary: Provide connector-scoped access to managed Process Group
configuration
Key: NIFI-16404
URL: https://issues.apache.org/jira/browse/NIFI-16404
Project: Apache NiFi
Issue Type: Improvement
Components: Core Framework
Reporter: Rob Fellows
Assignee: Rob Fellows
Process Groups managed by a Connector cannot be retrieved through the standard
Process Group REST resource unless the Connector is in Troubleshooting mode.
This restriction is intentional for general component operations:
connector-managed flow components should not be directly accessible while the
Connector owns and manages its flow. However, it also prevents clients with
read access to the Connector from retrieving the configuration of a managed
Process Group for read-only inspection.
The Connector REST resource currently exposes:
* Connector flow retrieval, returning a ProcessGroupFlowEntity containing
canvas contents and breadcrumb information
* Connector-scoped retrieval of individual Controller Services
* Connector-scoped status and status-history operations for managed Process
Groups
It does not expose an equivalent operation that returns a complete
ProcessGroupEntity. A ProcessGroupFlowEntity does not contain all Process Group
configuration fields, permissions, and revision information needed by clients
that display Process Group configuration.
Consequently, clients must either:
1. Use the standard Process Group endpoint, which fails while the Connector is
not in Troubleshooting mode
2. Work with an incomplete representation from the Connector flow endpoint
3. Require Troubleshooting mode merely to inspect configuration, even though no
modification is being requested
A client with read access to a Connector should be able to retrieve the
complete configuration entity for a Process Group belonging to that Connector’s
managed flow, regardless of whether the Connector is in Troubleshooting mode.
This capability must not make unrelated Process Groups accessible through the
Connector or weaken the existing restrictions on standard Process Group
operations.
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