Public Member Functions | |
void | initialize (ContainerServices containerServices) throws ComponentLifecycleException |
void | execute () throws ComponentLifecycleException |
void | cleanUp () |
void | aboutToAbort () |
The methods are used by the container to start and stop the component, that is, to manage its lifecycle.
Note that the constructor of the component implementation should be very small, preferably empty. Use the methods initialize(ContainerServices) and execute() instead.
TODOs:
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Called when due to some error condition the component is about to be forcefully removed some unknown amount of time later (usually not very much...). The component should make an effort to die as neatly as possible. Because of its urgency, this method will be called asynchronously to the execution of any other method of the component. Implemented in alma::acs::component::ComponentImplBase.
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Called after the last functional call to the component has finished. The component should then orderly release resources etc. Implemented in alma::acs::component::ComponentImplBase.
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Called after ComponentLifecycle#initialize(ContainerServices) to tell the component that it has to be ready to accept incoming functional calls any time. Examples:
Must be implemented as a synchronous (blocking) call (can spawn threads though). Implemented in alma::acs::component::ComponentImplBase.
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Called to give the component time to initialize itself. For instance, the component could retrieve connections, read in configuration files/parameters, build up in-memory tables, ... Called before execute(). In fact, this method might be called quite some time before functional requests can be sent to the component. Must be implemented as a synchronous (blocking) call.
Implemented in alma::acs::component::ComponentImplBase.
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