Graham McIntire
3228835636
- Add precip_1h_in and wx_codes fields to ASOS surface observations - Add IEMRE reanalysis schema for radar-derived hourly precipitation - Add IemreFetchWorker with exponential backoff and idempotency - Integrate IEMRE enqueue into cron weather backfill pipeline - All existing QSOs marked iemre_queued=false for automatic backfill
64 lines
1.9 KiB
Elixir
64 lines
1.9 KiB
Elixir
defmodule Microwaveprop.Workers.IemreFetchWorker do
|
|
@moduledoc false
|
|
use Oban.Worker, queue: :iemre, max_attempts: 20
|
|
|
|
alias Microwaveprop.Weather
|
|
alias Microwaveprop.Weather.IemClient
|
|
|
|
require Logger
|
|
|
|
@impl Oban.Worker
|
|
def backoff(%Oban.Job{attempt: attempt}) do
|
|
min(120 * Integer.pow(2, attempt - 1), _six_hours = 21_600)
|
|
end
|
|
|
|
@impl Oban.Worker
|
|
def perform(%Oban.Job{args: args}) do
|
|
%{"lat" => lat, "lon" => lon, "date" => date_str} = args
|
|
date = Date.from_iso8601!(date_str)
|
|
|
|
if Weather.has_iemre_observation?(lat, lon, date) do
|
|
Logger.info("IEMRE observation already exists for #{lat},#{lon} @ #{date_str}")
|
|
:ok
|
|
else
|
|
Logger.info("Fetching IEMRE data for #{lat},#{lon} @ #{date_str}")
|
|
|
|
case IemClient.fetch_iemre(lat, lon, date) do
|
|
{:ok, []} ->
|
|
Logger.info("IEMRE returned empty data for #{lat},#{lon} @ #{date_str}")
|
|
:ok
|
|
|
|
{:ok, data} ->
|
|
Weather.upsert_iemre_observation(%{
|
|
lat: lat,
|
|
lon: lon,
|
|
date: date,
|
|
hourly: data
|
|
})
|
|
|
|
Logger.info("IEMRE observation saved for #{lat},#{lon} @ #{date_str} (#{length(data)} hours)")
|
|
:ok
|
|
|
|
{:error, reason} ->
|
|
if transient_failure?(reason) do
|
|
Logger.error("IEMRE transient error for #{lat},#{lon} @ #{date_str}: #{inspect(reason)}")
|
|
{:error, reason}
|
|
else
|
|
Logger.warning("IEMRE permanent failure for #{lat},#{lon} @ #{date_str}: #{inspect(reason)}")
|
|
{:cancel, reason}
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
defp transient_failure?(%{__exception__: true}), do: true
|
|
defp transient_failure?("IEM IEMRE HTTP " <> status), do: server_error?(status)
|
|
defp transient_failure?(_), do: false
|
|
|
|
defp server_error?(status) do
|
|
case Integer.parse(status) do
|
|
{code, _} when code in [429, 500, 502, 503, 504] -> true
|
|
_ -> false
|
|
end
|
|
end
|
|
end
|