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90 lines
2.6 KiB
Elixir
90 lines
2.6 KiB
Elixir
# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Web.Federator.Publisher do
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alias Pleroma.Activity
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alias Pleroma.Config
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alias Pleroma.User
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alias Pleroma.Workers.Publisher, as: PublisherWorker
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require Logger
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@moduledoc """
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Defines the contract used by federation implementations to publish messages to
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their peers.
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"""
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@doc """
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Determine whether an activity can be relayed using the federation module.
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"""
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@callback is_representable?(Pleroma.Activity.t()) :: boolean()
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@doc """
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Relays an activity to a specified peer, determined by the parameters. The
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parameters used are controlled by the federation module.
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"""
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@callback publish_one(Map.t()) :: {:ok, Map.t()} | {:error, any()}
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@doc """
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Enqueue publishing a single activity.
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"""
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@spec enqueue_one(module(), Map.t()) :: :ok
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def enqueue_one(module, %{} = params) do
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worker_args =
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if max_attempts = Pleroma.Config.get([:workers, :retries, :federator_outgoing]) do
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[max_attempts: max_attempts]
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else
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[]
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end
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%{"op" => "publish_one", "module" => to_string(module), "params" => params}
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|> PublisherWorker.new(worker_args)
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|> Pleroma.Repo.insert()
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end
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@doc """
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Relays an activity to all specified peers.
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"""
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@callback publish(User.t(), Activity.t()) :: :ok | {:error, any()}
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@spec publish(User.t(), Activity.t()) :: :ok
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def publish(%User{} = user, %Activity{} = activity) do
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Config.get([:instance, :federation_publisher_modules])
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|> Enum.each(fn module ->
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if module.is_representable?(activity) do
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Logger.info("Publishing #{activity.data["id"]} using #{inspect(module)}")
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module.publish(user, activity)
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end
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end)
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:ok
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end
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@doc """
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Gathers links used by an outgoing federation module for WebFinger output.
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"""
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@callback gather_webfinger_links(User.t()) :: list()
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@spec gather_webfinger_links(User.t()) :: list()
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def gather_webfinger_links(%User{} = user) do
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Config.get([:instance, :federation_publisher_modules])
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|> Enum.reduce([], fn module, links ->
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links ++ module.gather_webfinger_links(user)
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end)
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end
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@doc """
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Gathers nodeinfo protocol names supported by the federation module.
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"""
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@callback gather_nodeinfo_protocol_names() :: list()
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@spec gather_nodeinfo_protocol_names() :: list()
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def gather_nodeinfo_protocol_names do
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Config.get([:instance, :federation_publisher_modules])
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|> Enum.reduce([], fn module, links ->
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links ++ module.gather_nodeinfo_protocol_names()
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end)
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end
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end
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