+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
defmodule Pleroma.Instances.Instance do
@moduledoc "Instance."
alias Pleroma.Instances
alias Pleroma.Instances.Instance
+ alias Pleroma.Repo
use Ecto.Schema
- import Ecto.{Query, Changeset}
-
- alias Pleroma.Repo
+ import Ecto.Query
+ import Ecto.Changeset
schema "instances" do
field(:host, :string)
- field(:unreachable_since, :naive_datetime)
- field(:reachability_checked_at, :naive_datetime)
+ field(:unreachable_since, :naive_datetime_usec)
timestamps()
end
- defdelegate host(url), to: Instances
+ defdelegate host(url_or_host), to: Instances
def changeset(struct, params \\ %{}) do
struct
- |> cast(params, [:host, :unreachable_since, :reachability_checked_at])
+ |> cast(params, [:host, :unreachable_since])
|> validate_required([:host])
|> unique_constraint(:host)
end
- def filter_reachable([]), do: []
+ def filter_reachable([]), do: %{}
- def filter_reachable(urls) when is_list(urls) do
+ def filter_reachable(urls_or_hosts) when is_list(urls_or_hosts) do
hosts =
- urls
+ urls_or_hosts
|> Enum.map(&(&1 && host(&1)))
|> Enum.filter(&(to_string(&1) != ""))
- unreachable_hosts =
+ unreachable_since_by_host =
Repo.all(
from(i in Instance,
- where:
- i.host in ^hosts and i.unreachable_since <= ^Instances.reachability_time_threshold(),
- select: i.host
+ where: i.host in ^hosts,
+ select: {i.host, i.unreachable_since}
)
)
+ |> Map.new(& &1)
+
+ reachability_datetime_threshold = Instances.reachability_datetime_threshold()
- Enum.filter(urls, &(&1 && host(&1) not in unreachable_hosts))
+ for entry <- Enum.filter(urls_or_hosts, &is_binary/1) do
+ host = host(entry)
+ unreachable_since = unreachable_since_by_host[host]
+
+ if !unreachable_since ||
+ NaiveDateTime.compare(unreachable_since, reachability_datetime_threshold) == :gt do
+ {entry, unreachable_since}
+ end
+ end
+ |> Enum.filter(& &1)
+ |> Map.new(& &1)
end
- def reachable?(url) when is_binary(url) do
+ def reachable?(url_or_host) when is_binary(url_or_host) do
!Repo.one(
from(i in Instance,
where:
- i.host == ^host(url) and i.unreachable_since <= ^Instances.reachability_time_threshold(),
+ i.host == ^host(url_or_host) and
+ i.unreachable_since <= ^Instances.reachability_datetime_threshold(),
select: true
)
)
def reachable?(_), do: true
- def set_reachable(url) when is_binary(url) do
- with host <- host(url),
+ def set_reachable(url_or_host) when is_binary(url_or_host) do
+ with host <- host(url_or_host),
%Instance{} = existing_record <- Repo.get_by(Instance, %{host: host}) do
{:ok, _instance} =
existing_record
- |> changeset(%{unreachable_since: nil, reachability_checked_at: DateTime.utc_now()})
+ |> changeset(%{unreachable_since: nil})
|> Repo.update()
end
end
- def set_reachable(_), do: {0, :noop}
+ def set_reachable(_), do: {:error, nil}
- def set_unreachable(url, unreachable_since \\ nil)
+ def set_unreachable(url_or_host, unreachable_since \\ nil)
- def set_unreachable(url, unreachable_since) when is_binary(url) do
- unreachable_since = unreachable_since || DateTime.utc_now()
- host = host(url)
+ def set_unreachable(url_or_host, unreachable_since) when is_binary(url_or_host) do
+ unreachable_since = parse_datetime(unreachable_since) || NaiveDateTime.utc_now()
+ host = host(url_or_host)
existing_record = Repo.get_by(Instance, %{host: host})
- changes = %{
- unreachable_since: unreachable_since,
- reachability_checked_at: NaiveDateTime.utc_now()
- }
-
- if existing_record do
- update_changes =
- if existing_record.unreachable_since &&
- NaiveDateTime.compare(existing_record.unreachable_since, unreachable_since) != :gt,
- do: Map.delete(changes, :unreachable_since),
- else: changes
+ changes = %{unreachable_since: unreachable_since}
- {:ok, _instance} =
- existing_record
- |> changeset(update_changes)
- |> Repo.update()
- else
- {:ok, _instance} =
+ cond do
+ is_nil(existing_record) ->
%Instance{}
|> changeset(Map.put(changes, :host, host))
|> Repo.insert()
+
+ existing_record.unreachable_since &&
+ NaiveDateTime.compare(existing_record.unreachable_since, unreachable_since) != :gt ->
+ {:ok, existing_record}
+
+ true ->
+ existing_record
+ |> changeset(changes)
+ |> Repo.update()
end
end
- def set_unreachable(_, _), do: {0, :noop}
+ def set_unreachable(_, _), do: {:error, nil}
+
+ defp parse_datetime(datetime) when is_binary(datetime) do
+ NaiveDateTime.from_iso8601(datetime)
+ end
+
+ defp parse_datetime(datetime), do: datetime
end