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dlr-eoc / ukis_kafka

Stream vector geodata over Apache Kafka

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SRID support

nmandery opened this issue · comments

commented

Currently all consumers and producers are assumed to use the same SRID for the geometries - this is certainly not always the case. To fully support SRS there are a few tasks which need to be done:

Extend the data representation used for streaming

There should be a srid key to specify the spatial reference system of a feature. Eventually a fallback to a proj4 string would make sense.

Support SRID in serialization tools

Tools like vertorlayer_producer should support reading the SRID of shapefiles etc...

Support SRID in consumers

postgis_consumer

In postgis_consumer the functionality would be needed to analyze the database schema of the target table and to determinate the SRID of the geometry column. Incoming features could then be transformed to the SRID of the table.

This has already been implemented in https://github.com/nmandery/batyr/blob/7427680ecda3f22df33741126c3012c0efd0853c/src/server/worker.cpp#L323 and could be ported to python.