Dominik Riemer created STREAMPIPES-81:
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Summary: Extend wrapper interfaces
Key: STREAMPIPES-81
URL: https://issues.apache.org/jira/browse/STREAMPIPES-81
Project: StreamPipes
Issue Type: Improvement
Components: Backend, Pipeline Elements
Reporter: Dominik Riemer
Currently, pipeline elements implement an interface that provides the three
methods onInvocation, onEvent and onDetach.
In future enhancements, we plan to introduce features that require actions at
pipeline creation time, e.g., to create a virtual data stream once a pipeline
is stored. To avoid installing/deinstalling such a stream at every start/stop
of a pipeline, the wrapper interfaces should be extended/refactored as follows:
* Add an onPipelineStored method to the pipeline element definition
* Add an onPipelineDeleted method to the pipeline element definition
* Rename onInvocation to onPipelineStarted and onDetach to onPipelineStopped
for clarifying the scope of the provided methods
* Ensure backwards compatibility by introducing API versioning for pipeline
element endpoints
* Extend the endpoints to handle onPipelineStored/Delete calls, HTTP
Post/Delete for Store/Delete and HTTP PUT for Start/Stop
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