61 lines
1.8 KiB
Elixir
61 lines
1.8 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.User.Synchronization do
|
|
alias Pleroma.HTTP
|
|
alias Pleroma.User
|
|
|
|
@spec call([User.t()], map(), keyword()) :: {User.t(), map()}
|
|
def call(users, errors, opts \\ []) do
|
|
do_call(users, errors, opts)
|
|
end
|
|
|
|
defp do_call([user | []], errors, opts) do
|
|
updated = fetch_counters(user, errors, opts)
|
|
{user, updated}
|
|
end
|
|
|
|
defp do_call([user | others], errors, opts) do
|
|
updated = fetch_counters(user, errors, opts)
|
|
do_call(others, updated, opts)
|
|
end
|
|
|
|
defp fetch_counters(user, errors, opts) do
|
|
%{host: host} = URI.parse(user.ap_id)
|
|
|
|
info = %{}
|
|
{following, errors} = fetch_counter(user.ap_id <> "/following", host, errors, opts)
|
|
info = if following, do: Map.put(info, :following_count, following), else: info
|
|
|
|
{followers, errors} = fetch_counter(user.ap_id <> "/followers", host, errors, opts)
|
|
info = if followers, do: Map.put(info, :follower_count, followers), else: info
|
|
|
|
User.set_info_cache(user, info)
|
|
errors
|
|
end
|
|
|
|
defp available_domain?(domain, errors, opts) do
|
|
max_retries = Keyword.get(opts, :max_retries, 3)
|
|
not (Map.has_key?(errors, domain) && errors[domain] >= max_retries)
|
|
end
|
|
|
|
defp fetch_counter(url, host, errors, opts) do
|
|
with true <- available_domain?(host, errors, opts),
|
|
{:ok, %{body: body, status: code}} when code in 200..299 <-
|
|
HTTP.get(
|
|
url,
|
|
[{:Accept, "application/activity+json"}]
|
|
),
|
|
{:ok, data} <- Jason.decode(body) do
|
|
{data["totalItems"], errors}
|
|
else
|
|
false ->
|
|
{nil, errors}
|
|
|
|
_ ->
|
|
{nil, Map.update(errors, host, 1, &(&1 + 1))}
|
|
end
|
|
end
|
|
end
|