Page MenuHomePhorge
Files F41646981

instance.ex
No OneTemporary
Actions

Size
3 KB
Referenced Files
None
Subscribers
None

instance.ex
View Options

# Pleroma: A lightweight social networking server
# Copyright © 2017-2020 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
import Ecto.Changeset
schema "instances" do
field(:host, :string)
field(:unreachable_since, :naive_datetime_usec)
timestamps()
end
defdelegate host(url_or_host), to: Instances
def changeset(struct, params \\ %{}) do
struct
|> cast(params, [:host, :unreachable_since])
|> validate_required([:host])
|> unique_constraint(:host)
end
def filter_reachable([]), do: %{}
def filter_reachable(urls_or_hosts) when is_list(urls_or_hosts) do
hosts =
urls_or_hosts
|> Enum.map(&(&1 && host(&1)))
|> Enum.filter(&(to_string(&1) != ""))
unreachable_since_by_host =
Repo.all(
from(i in Instance,
where: i.host in ^hosts,
select: {i.host, i.unreachable_since}
)
)
|> Map.new(& &1)
reachability_datetime_threshold = Instances.reachability_datetime_threshold()
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_or_host) when is_binary(url_or_host) do
!Repo.one(
from(i in Instance,
where:
i.host == ^host(url_or_host) and
i.unreachable_since <= ^Instances.reachability_datetime_threshold(),
select: true
)
)
end
def reachable?(_), do: true
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})
|> Repo.update()
end
end
def set_reachable(_), do: {:error, nil}
def set_unreachable(url_or_host, unreachable_since \\ nil)
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}
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: {:error, nil}
defp parse_datetime(datetime) when is_binary(datetime) do
NaiveDateTime.from_iso8601(datetime)
end
defp parse_datetime(datetime), do: datetime
end

File Metadata

Mime Type
text/x-ruby
Expires
Sun, Feb 15, 4:38 AM (18 h, 40 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
977220
Default Alt Text
instance.ex (3 KB)

Event Timeline