45 lines
1,000 B
Elixir
45 lines
1,000 B
Elixir
|
defmodule Pleroma.Plugs.RateLimiter.LimiterSupervisor do
|
||
|
|
use DynamicSupervisor
|
||
|
|
|
||
|
|
import Cachex.Spec
|
||
|
|
|
||
|
|
def start_link(init_arg) do
|
||
|
|
DynamicSupervisor.start_link(__MODULE__, init_arg, name: __MODULE__)
|
||
|
|
end
|
||
|
|
|
||
|
|
def add_limiter(limiter_name, expiration) do
|
||
|
|
{:ok, _pid} =
|
||
|
|
DynamicSupervisor.start_child(
|
||
|
|
__MODULE__,
|
||
|
|
%{
|
||
|
|
id: String.to_atom("rl_#{limiter_name}"),
|
||
|
|
start:
|
||
|
|
{Cachex, :start_link,
|
||
|
|
[
|
||
|
|
limiter_name,
|
||
|
|
[
|
||
|
|
expiration:
|
||
|
|
expiration(
|
||
|
|
default: expiration,
|
||
|
|
interval: check_interval(expiration),
|
||
|
|
lazy: true
|
||
|
|
)
|
||
|
|
]
|
||
|
|
]}
|
||
|
|
}
|
||
|
|
)
|
||
|
|
end
|
||
|
|
|
||
|
|
@impl true
|
||
|
|
def init(_init_arg) do
|
||
|
|
DynamicSupervisor.init(strategy: :one_for_one)
|
||
|
|
end
|
||
|
|
|
||
|
|
defp check_interval(exp) do
|
||
|
|
(exp / 2)
|
||
|
|
|> Kernel.trunc()
|
||
|
|
|> Kernel.min(5000)
|
||
|
|
|> Kernel.max(1)
|
||
|
|
end
|
||
|
|
end
|