Flask web service

[Peter9192]

Moving python data reading to a separate webservice built with Flask

TODO:

• [ ] Add tests (reuse xarray tests?)
• [ ] Better naming/design of the API endpoints
• [ ] Process default settings
• [ ] Use request data instead of search params (?)
• [x] Refactor typescript client code
• [x] Documentation
• [ ] ...

[Peter9192]

I was able to roughly reproduce Stefan's initial testing from #55. With flask I get a much higher success rate and 3x faster request handling. I used 2 workers instead of 4.

[Peter9192]

I've move all pyodide calls to the flask backend. Sometimes the site crashes; it seems to happen when I quickly go from the home page through global and map to country. The URL changes to something like http://localhost:5173/regions/USA?%3Ftemperature=2&exceedanceRisk=0.33&nonCO2Mitigation=0.65&negativeEmissions=0.4&effortSharing=GDR&variable=2100 (note the ?%3). Then, the flask server crashes.

Still lots of optimizations possible, but the site, in general, seems to run much more smoothly now.

[Peter9192]

Current endpoints (search = temperature + risk + nonco2 + negco2):

/pathwayChoices
/regions

/pathwayStats + search

/populationOverTime/${region}?start=${start}&end=${end}
/gdpOverTime/${region}?start=${start}&end=${end}

/fullCenturyBudgetSpatial${search}
/policyPathway/${policy}/${Region}

/historicalCarbon/${region}?start=${start}&end=${end}

/pathwayCarbon + search         --> global_pathway
/${ISO}/${principle}${search}   --> country_pathway

New design idea:

timeseries / <ISO/global> / gdp / ? start & end
timeseries / <ISO/global> / population ? start & end

timeseries / <ISO/global> / emissions / historical ? start & end
timeseries / <ISO/global> / emissions / reference ? <name=NDC/CurPol/NetZero>
timeseries / <ISO/global> / emissions / customized ? search & principles(?) & start & end

// map / <year> / gdp
// map / <year> / population
map / <year> / emissions ? search & principle

statistics / <ISO/global> / emissions ? search & principle(?) & operator='mean'

# Would be nice for gaps
values / <ISO/global> / year / emissions ? search & principles(?)

[sverhoeven]

I've move all pyodide calls to the flask backend. Sometimes the site crashes; it seems to happen when I quickly go from the home page through global and map to country. The URL changes to something like http://localhost:5173/regions/USA?%3Ftemperature=2&exceedanceRisk=0.33&nonCO2Mitigation=0.65&negativeEmissions=0.4&effortSharing=GDR&variable=2100 (note the ?%3). Then, the flask server crashes.

Still lots of optimizations possible, but the site, in general, seems to run much more smoothly now.

We could add a debounce to the sliders or only update url when slider is released.

[Peter9192]

Already fixed it in my last commit. But could still be good

[Peter9192]

Okay this works now and CI is green. I'll move the remaining todo's to a new issue so work on the hosting can start