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