109 lines
2.7 KiB
Elixir
109 lines
2.7 KiB
Elixir
defmodule Pleroma.Instances.Instance do
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@moduledoc "Instance."
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alias Pleroma.Instances
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alias Pleroma.Instances.Instance
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use Ecto.Schema
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import Ecto.{Query, Changeset}
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alias Pleroma.Repo
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schema "instances" do
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field(:host, :string)
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field(:unreachable_since, :naive_datetime)
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field(:reachability_checked_at, :naive_datetime)
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timestamps()
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end
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defdelegate host(url), to: Instances
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def changeset(struct, params \\ %{}) do
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struct
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|> cast(params, [:host, :unreachable_since, :reachability_checked_at])
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|> validate_required([:host])
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|> unique_constraint(:host)
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end
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def filter_reachable([]), do: []
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def filter_reachable(urls) when is_list(urls) do
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hosts =
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urls
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|> Enum.map(&(&1 && host(&1)))
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|> Enum.filter(&(to_string(&1) != ""))
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unreachable_hosts =
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Repo.all(
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from(i in Instance,
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where:
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i.host in ^hosts and
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i.unreachable_since <= ^Instances.reachability_datetime_threshold(),
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select: i.host
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)
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)
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Enum.filter(urls, &(&1 && host(&1) not in unreachable_hosts))
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end
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def reachable?(url) when is_binary(url) do
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!Repo.one(
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from(i in Instance,
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where:
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i.host == ^host(url) and
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i.unreachable_since <= ^Instances.reachability_datetime_threshold(),
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select: true
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)
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)
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end
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def reachable?(_), do: true
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def set_reachable(url) when is_binary(url) do
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with host <- host(url),
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%Instance{} = existing_record <- Repo.get_by(Instance, %{host: host}) do
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{:ok, _instance} =
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existing_record
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|> changeset(%{unreachable_since: nil, reachability_checked_at: DateTime.utc_now()})
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|> Repo.update()
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end
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end
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def set_reachable(_), do: {0, :noop}
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def set_unreachable(url, unreachable_since \\ nil)
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def set_unreachable(url, unreachable_since) when is_binary(url) do
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unreachable_since = unreachable_since || DateTime.utc_now()
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host = host(url)
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existing_record = Repo.get_by(Instance, %{host: host})
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changes = %{
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unreachable_since: unreachable_since,
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reachability_checked_at: NaiveDateTime.utc_now()
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}
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if existing_record do
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update_changes =
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if existing_record.unreachable_since &&
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NaiveDateTime.compare(existing_record.unreachable_since, unreachable_since) != :gt,
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do: Map.delete(changes, :unreachable_since),
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else: changes
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{:ok, _instance} =
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existing_record
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|> changeset(update_changes)
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|> Repo.update()
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else
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{:ok, _instance} =
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%Instance{}
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|> changeset(Map.put(changes, :host, host))
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|> Repo.insert()
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end
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end
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def set_unreachable(_, _), do: {0, :noop}
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end
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