{
  "$schema": "https://nuncaeslupus.github.io/drawspec/schema/drawspec-v1.schema.json",
  "version": 1,
  "kind": "flow",
  "title": "The nightly import",
  "description": "The vendor's export is fetched, checked and loaded into staging before it replaces the live table; a timeout and a deadlock are each retried in place.",
  "nodes": [
    {"id": "fetch", "text": "Fetch the vendor's export", "role": "start"},
    {"id": "check", "text": "Do the row counts match?", "role": "decision"},
    {"id": "load", "text": "Load into staging"},
    {"id": "page", "text": "Page the data owner", "role": "terminal"},
    {"id": "swap", "text": "Swap staging into live", "role": "terminal"}
  ],
  "edges": [
    {"from": "fetch", "to": "fetch", "label": "timed out: retry"},
    {"from": "fetch", "to": "check"},
    {"from": "check", "to": "load", "label": "yes"},
    {"from": "check", "to": "page", "label": "no"},
    {"from": "load", "to": "load", "label": "deadlock: retry"},
    {"from": "load", "to": "swap"}
  ]
}