Alvaro Polo created FLUME-1366:
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Summary: AbstractSource, AbstractChannel & AbstractSink should
provide a protected method setLifecycleState()
Key: FLUME-1366
URL: https://issues.apache.org/jira/browse/FLUME-1366
Project: Flume
Issue Type: Improvement
Components: Channel, Sinks+Sources
Affects Versions: v1.2.0
Reporter: Alvaro Polo
Priority: Minor
Sources, channels and sinks are designed to extend `AbstractSource`,
`AbstractChannel` and `AbstractSink`, respectively. These classes implement the
basics of lifecycle state tracking for sources, channels or sinks. In all them,
that state is modified exclusively by invoking the `start()` and `stop()`
methods.
There is no possibility of setting the lifecycle state to `ERROR`. This would
be specially useful when override `start()` and `stop()` methods find an error
that impedes the element to be started or stopped.
My suggestion here is to add a new protected method `void
setLifecycleState(LifecycleState)` that allow concrete sources, channels and
sinks to report such a situation.
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