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# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Stats do
use GenServer
import Ecto.Query
alias Pleroma.CounterCache
alias Pleroma.Repo
alias Pleroma.User
@interval :timer.seconds(60)
def start_link(_) do
GenServer.start_link(
__MODULE__,
nil,
name: __MODULE__
)
end
@impl true
def init(_args) do
{:ok, nil, {:continue, :calculate_stats}}
end
@doc "Performs update stats"
def force_update do
GenServer.call(__MODULE__, :force_update)
end
@doc "Returns stats data"
@spec get_stats() :: %{
domain_count: non_neg_integer(),
status_count: non_neg_integer(),
user_count: non_neg_integer()
}
def get_stats do
%{stats: stats} = GenServer.call(__MODULE__, :get_state)
stats
end
@doc "Returns list peers"
@spec get_peers() :: list(String.t())
def get_peers do
%{peers: peers} = GenServer.call(__MODULE__, :get_state)
peers
end
@spec calculate_stat_data() :: %{
peers: list(),
stats: %{
domain_count: non_neg_integer(),
status_count: non_neg_integer(),
user_count: non_neg_integer()
}
}
def calculate_stat_data do
peers =
from(
u in User,
select: fragment("distinct split_part(?, '@', 2)", u.nickname),
where: u.local != ^true
)
|> Repo.all()
|> Enum.filter(& &1)
domain_count = Enum.count(peers)
status_count = Repo.aggregate(User.Query.build(%{local: true}), :sum, :note_count)
users_query =
from(u in User,
where: u.deactivated != true,
where: u.local == true,
where: not is_nil(u.nickname),
where: not u.invisible
)
user_count = Repo.aggregate(users_query, :count, :id)
%{
peers: peers,
stats: %{
domain_count: domain_count,
status_count: status_count || 0,
user_count: user_count
}
}
end
@spec get_status_visibility_count(String.t() | nil) :: map()
def get_status_visibility_count(instance \\ nil) do
if is_nil(instance) do
CounterCache.get_sum()
else
CounterCache.get_by_instance(instance)
end
end
@impl true
def handle_continue(:calculate_stats, _) do
stats = calculate_stat_data()
unless Pleroma.Config.get(:env) == :test do
Process.send_after(self(), :run_update, @interval)
end
{:noreply, stats}
end
@impl true
def handle_call(:force_update, _from, _state) do
new_stats = calculate_stat_data()
{:reply, new_stats, new_stats}
end
@impl true
def handle_call(:get_state, _from, state) do
{:reply, state, state}
end
@impl true
def handle_info(:run_update, _) do
new_stats = calculate_stat_data()
Process.send_after(self(), :run_update, @interval)
{:noreply, new_stats}
end
end
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