Introduce Abstract Flink Service Class
Closes #172 (closed)
Creates an AbstractFlinkService
which holds the initialization code and removes a lot of replicated code.
The actual pipelines are still inside of the individual History or AggregationServices implemented in the buildPipeline()
methods.
The configuration of the serializer needs to be implemented in configureSerializers()
.
The other methods can be overridden if needed.
Edited by Sören Henning