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https://issues.apache.org/jira/browse/FLUME-1366?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alvaro Polo updated FLUME-1366:
-------------------------------

    Description: 
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. 

  was:
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. 


Description field updated due to invalid markup language used ;-)
                
> 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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