Graham McIntire
c709fb5c32
On app start, check if latest scores are older than 2 hours. If so, immediately enqueue a PropagationGridWorker job. Covers app restarts, deploys, and missed cron ticks.
62 lines
1.9 KiB
Elixir
62 lines
1.9 KiB
Elixir
defmodule Microwaveprop.Application do
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# See https://hexdocs.pm/elixir/Application.html
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# for more information on OTP Applications
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@moduledoc false
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use Application
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require Logger
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@impl true
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def start(_type, _args) do
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migrate()
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children = [
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MicrowavepropWeb.Telemetry,
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Microwaveprop.Repo,
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{DNSCluster, query: Application.get_env(:microwaveprop, :dns_cluster_query) || :ignore},
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{Phoenix.PubSub, name: Microwaveprop.PubSub},
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{Oban, Application.fetch_env!(:microwaveprop, Oban)},
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# Start to serve requests, typically the last entry
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MicrowavepropWeb.Endpoint,
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{Task, &ensure_fresh_scores/0}
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]
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# See https://hexdocs.pm/elixir/Supervisor.html
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# for other strategies and supported options
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opts = [strategy: :one_for_one, name: Microwaveprop.Supervisor]
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Supervisor.start_link(children, opts)
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end
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# Tell Phoenix to update the endpoint configuration
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# whenever the application is updated.
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defp migrate do
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Microwaveprop.Release.migrate()
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end
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# If propagation scores are older than 2 hours, enqueue a grid worker immediately.
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# Covers app restarts, deploys, and missed cron ticks.
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defp ensure_fresh_scores do
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case Microwaveprop.Propagation.latest_valid_time() do
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nil ->
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Logger.info("No propagation scores found, enqueuing grid worker")
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Oban.insert(Microwaveprop.Workers.PropagationGridWorker.new(%{}))
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latest ->
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age_minutes = DateTime.diff(DateTime.utc_now(), latest, :minute)
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if age_minutes > 120 do
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Logger.info("Propagation scores are #{age_minutes}m old, enqueuing grid worker")
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Oban.insert(Microwaveprop.Workers.PropagationGridWorker.new(%{}))
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else
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Logger.info("Propagation scores are #{age_minutes}m old, fresh enough")
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end
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end
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end
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@impl true
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def config_change(changed, _new, removed) do
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MicrowavepropWeb.Endpoint.config_change(changed, removed)
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:ok
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end
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end
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