Graham McIntire
021608dc90
Mix tasks don't run in production, so the orchestration lives in
Microwaveprop.Buildings.BulkFetch — callable from an attached iex on
the prod pod via:
iex> Microwaveprop.Buildings.BulkFetch.run(32.8, -97.0, 500)
Default 500 mi radius around DFW yields ~440 candidate quadkeys at
zoom 9; only those present in the MS dataset index (typically a few
hundred over CONUS) get downloaded. Concurrency 4, per-task timeout
3 min, results logged with downloaded/cached/failed/missing counts.
The mix.task is kept as a dev-only thin wrapper.
49 lines
1.4 KiB
Elixir
49 lines
1.4 KiB
Elixir
defmodule Mix.Tasks.BuildingsFetch do
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@shortdoc "Bulk-download Microsoft Building Footprint tiles around DFW (DEV ONLY)"
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@moduledoc """
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Pre-warms the local Microsoft Building Footprints cache so per-Calculate
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requests never have to wait on a tile download.
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mix buildings.fetch # default: 500 mi radius around EM13
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mix buildings.fetch --lat 32.8 --lon -97 --radius-mi 500
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mix buildings.fetch --concurrency 8
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**Mix tasks do not run in production.** From an attached `iex` on the
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prod pod, call the underlying module directly:
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iex> Microwaveprop.Buildings.BulkFetch.run(32.8, -97.0, 500)
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"""
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use Mix.Task
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alias Microwaveprop.Buildings.BulkFetch
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@default_lat 32.8
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@default_lon -97.0
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@default_radius_mi 500
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@switches [
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lat: :float,
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lon: :float,
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radius_mi: :integer,
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concurrency: :integer
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]
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@impl Mix.Task
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def run(argv) do
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{opts, _, _} = OptionParser.parse(argv, switches: @switches)
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lat = Keyword.get(opts, :lat, @default_lat)
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lon = Keyword.get(opts, :lon, @default_lon)
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radius_mi = Keyword.get(opts, :radius_mi, @default_radius_mi)
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concurrency = Keyword.get(opts, :concurrency)
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Mix.Task.run("app.start")
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bulk_opts = if concurrency, do: [concurrency: concurrency], else: []
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result = BulkFetch.run(lat, lon, radius_mi, bulk_opts)
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Mix.shell().info("Done. #{inspect(result)}")
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end
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end
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