Greg Harris created KAFKA-15244:
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Summary: Connect PluginType.from(Class) result is incorrect when
subclassing multiple plugin interfaces
Key: KAFKA-15244
URL: https://issues.apache.org/jira/browse/KAFKA-15244
Project: Kafka
Issue Type: Bug
Components: KafkaConnect
Reporter: Greg Harris
Assignee: Greg Harris
Fix For: 3.6.0
The PluginType enum encodes the multiple different types of plugins that the
plugin discovery infrastructure supports. The `PluginType.from(Class)` method
is used to evaluate an arbitrary plugin subclass to determine what type it is.
This is flawed, because multiple plugin types are interfaces, and a single
class may implement multiple plugin interfaces. This has the effect that when a
plugin implements multiple classes, it appears multiple times, but each time it
is listed under the same arbitrary type. For example, a PluginDesc<Converter>
object may contain the type PluginType.HEADER_CONVERTER, which is incorrect.
This method should be removed to force callers to consider that one plugin may
implement multiple types.
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