distraction.party/lib/pleroma/stats.ex

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Elixir
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defmodule Pleroma.Stats do
use Agent
import Ecto.Query
alias Pleroma.{User, Repo, Activity}
def start_link do
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agent = Agent.start_link(fn -> {[], %{}} end, name: __MODULE__)
schedule_update()
agent
end
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def get_stats do
Agent.get(__MODULE__, fn {_, stats} -> stats end)
end
def get_peers do
Agent.get(__MODULE__, fn {peers, _} -> peers end)
end
def schedule_update do
update_stats()
spawn(fn ->
Process.sleep(1000 * 60 * 60 * 1) # 1 hour
schedule_update()
end)
end
def update_stats do
peers = from(u in Pleroma.User,
select: fragment("?->'host'", u.info),
where: u.local != ^true)
|> Repo.all() |> Enum.uniq()
domain_count = Enum.count(peers)
status_query = from p in Activity,
where: p.local == ^true,
where: fragment("?->'object'->>'type' = ?", p.data, ^"Note")
status_count = Repo.aggregate(status_query, :count, :id)
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user_count = Repo.aggregate(User.local_user_query, :count, :id)
Agent.update(__MODULE__, fn _ ->
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{peers, %{domain_count: domain_count, status_count: status_count, user_count: user_count}}
end)
end
end