Andy LoPresto created NIFI-7130:
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Summary: Change FlowController and StandardFlowService to use
interfaces and allow injection
Key: NIFI-7130
URL: https://issues.apache.org/jira/browse/NIFI-7130
Project: Apache NiFi
Issue Type: Improvement
Components: Core Framework
Affects Versions: 1.11.1
Reporter: Andy LoPresto
The {{FlowController}} and {{StandardFlowService}} classes are critical
components in the NiFi controller which require a number of collaborator
services but create these classes internally and do not allow for dependency
injection or inversion of control. This makes them nearly impossible to
coherently unit test, and they are very brittle and tightly coupled to specific
implementations.
Introducing interfaces and allowing for dependency injection would greatly
improve the testability and composition of these classes.
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