akkoma/lib/pleroma/web/federator/retry_queue.ex

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Elixir
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2018-08-26 18:17:13 +00:00
defmodule Pleroma.Web.Federator.RetryQueue do
use GenServer
alias Pleroma.Web.{WebFinger, Websub}
alias Pleroma.Web.ActivityPub.ActivityPub
require Logger
@websub Application.get_env(:pleroma, :websub)
@ostatus Application.get_env(:pleroma, :websub)
@httpoison Application.get_env(:pleroma, :websub)
@instance Application.get_env(:pleroma, :websub)
# initial timeout, 5 min
@initial_timeout 30_000
@max_retries 5
def init(args) do
{:ok, args}
end
def start_link() do
GenServer.start_link(__MODULE__, %{}, name: __MODULE__)
end
def enqueue(data, transport, retries \\ 0) do
GenServer.cast(__MODULE__, {:maybe_enqueue, data, transport, retries + 1})
end
def handle_cast({:maybe_enqueue, data, transport, retries}, state) do
if retries > @max_retries do
Logger.debug("Maximum retries reached on #{inspect(data)}")
{:noreply, state}
else
Process.send_after(
__MODULE__,
{:send, data, transport, retries},
growth_function(retries)
)
{:noreply, state}
end
end
def handle_info({:send, %{topic: topic} = data, :websub, retries}, state) do
Logger.debug("RetryQueue: Retrying to send object #{topic}")
case Websub.publish_one(data) do
{:ok, _} ->
{:noreply, state}
{:error, reason} ->
enqueue(data, :websub, retries)
{:noreply, state}
end
end
def handle_info({:send, %{id: id} = data, :activitypub, retries}, state) do
Logger.debug("RetryQueue: Retrying to send object #{id}")
case ActivityPub.publish_one(data) do
{:ok, _} ->
{:noreply, state}
{:error, reason} ->
enqueue(data, :activitypub, retries)
{:noreply, state}
end
end
def handle_info(unknown, state) do
Logger.debug("RetryQueue: don't know what to do with #{inspect(unknown)}, ignoring")
{:noreply, state}
end
defp growth_function(retries) do
round(@initial_timeout * :math.pow(retries, 3))
end
end