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kickstarting python lib #1
Description
@migurski just moving this thread over from sharedstreets/sharedstreets-ref-system#16 From the ticket:
So the SharedStreets tiles use length delimited encoding (the technique $GOOG recommends for files over ~1mb to allow stream processing of data). Turns out the Python Protobuf library doesn't have helper functions to parse these messages, but I found this example on how do to it:
https://www.datadoghq.com/blog/engineering/protobuf-parsing-in-python/
Just posted a quick example here using your compiled version of the .proto file:
https://github.com/sharedstreets/sharedstreets-python/blob/master/test.py
Let's use your example code as starting point for building tile loading functionality in the python lib.
Also @DenisCarriere want to create a punch list based on the core functionality from the JS lib so we can try and keep parity in the python version?
Activity
migurski commentedon Feb 28, 2018
I tried out the test code, and it worked well. Should be possible to run with this.
DenisCarriere commentedon Mar 1, 2018
👍 Sounds good.
I'll try to build up the documentation to have both Python & Javascript sync up.
A few method names might need to change to follow the Python idioms.
Ex:
forwardReference=>forward_referenceShould we also divide the Python "core" library with the "pbf" parser (eventually writer).
sharedstreetssharedstreets-pbfmigurski commentedon Mar 1, 2018
I’d keep them together; there’s little benefit to prematurely carving up libraries just yet!
A few things I’d like to see in this library, that I’m willing to personally work on:
kpwebb commentedon Mar 1, 2018
@migurski this sounds great! and big +1 on the tile server with slippy preview. Having a CLI we can point at local tile directory would be fantastic.
I'm curious if we can leverage any of the the existing React UI (http://platform.sharedstreets.io/) to boostrap this. I'm about to flip the switch on the public repo of this. The extensible layer infrastructure still needs a lot of work but hopefully a good starting point.
migurski commentedon Mar 1, 2018
What would the local tile directory CLI do? Fill it up, or convert it out?
kpwebb commentedon Mar 1, 2018
I was thinking something like the node "serve" command to spin up a slippy map viewer for local files.