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Initial public release
2026-08-31 21:56:53 +02:00

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Connector Implementation Guide

Connector Interface

Every external data connector should expose:

  • name
  • capabilities
  • is_configured()
  • health_check()
  • fetch_by_area(area_geometry, parameters)
  • normalize(raw_result)
  • cache_key(area, parameters)

Required Connectors

GRB Connector

V1 target: fetch or register reference building polygons. If live WFS cannot be implemented immediately, build the interface and support fixture/local import honestly.

OSM Connector

V1 target: fetch buildings/roads/water/green where possible using Overpass or local fixture fallback.

Sentinel Connector

V2 target. In V1 it should remain disabled with clear roadmap state.

Connector Failure Behavior

  • timeout -> CONNECTOR_TIMEOUT
  • missing config -> CONNECTOR_UNCONFIGURED
  • invalid response -> CONNECTOR_INVALID_RESPONSE
  • no data -> valid empty result, not error