Add Activity Pub endpoints cache
Signed-off-by: Thomas Citharel <tcit@tcit.fr>
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@ -377,4 +377,8 @@ defmodule Mobilizon.Actors.Actor do
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name -> name
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end
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end
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def clear_cache(%Actor{preferred_username: preferred_username, domain: nil}) do
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Cachex.del(:activity_pub, "actor_" <> preferred_username)
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end
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end
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@ -37,12 +37,17 @@ defmodule Mobilizon.Application do
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worker(
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Cachex,
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[
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:json,
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:activity_pub,
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[
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limit: 2500
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limit: 2500,
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expiration:
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expiration(
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default: :timer.minutes(3),
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interval: :timer.seconds(15)
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)
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]
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],
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id: :cache_actor
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id: :cache_activity_pub
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),
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worker(Guardian.DB.Token.SweeperServer, []),
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worker(Mobilizon.Service.Federator, [])
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@ -21,53 +21,96 @@ defmodule MobilizonWeb.ActivityPubController do
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"application/activity+json, application/ld+json"
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]
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@doc """
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Show an Actor's ActivityPub representation
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"""
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@spec actor(Plug.Conn.t(), map()) :: Plug.Conn.t()
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def actor(conn, %{"name" => name}) do
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with %Actor{} = actor <- Actors.get_local_actor_by_name(name) do
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if conn |> get_req_header("accept") |> is_ap_header() do
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conn |> render_ap_actor(actor)
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render_cached_actor(conn, name)
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else
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conn
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|> put_resp_content_type("text/html")
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|> send_file(200, "priv/static/index.html")
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end
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else
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nil -> {:error, :not_found}
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end
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@spec render_cached_actor(Plug.Conn.t(), String.t()) :: Plug.Conn.t()
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defp render_cached_actor(conn, name) do
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case Cachex.fetch(:activity_pub, "actor_" <> name, &get_local_actor_by_name/1) do
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{status, %Actor{} = actor} when status in [:ok, :commit] ->
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(ActorView.render("actor.json", %{actor: actor}))
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{:ignore, _} ->
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{:error, :not_found}
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end
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end
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defp get_local_actor_by_name("actor_" <> name) do
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case Actors.get_local_actor_by_name(name) do
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nil -> {:ignore, nil}
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%Actor{} = actor -> {:commit, actor}
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end
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end
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# Test if the request has an AP header
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defp is_ap_header(ap_headers) do
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length(@activity_pub_headers -- ap_headers) < 2
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end
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defp render_ap_actor(conn, %Actor{} = actor) do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(ActorView.render("actor.json", %{actor: actor}))
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end
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@doc """
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Renders an Event ActivityPub's representation
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"""
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@spec event(Plug.Conn.t(), map()) :: Plug.Conn.t()
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def event(conn, %{"uuid" => uuid}) do
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with %Event{} = event <- Events.get_event_full_by_uuid(uuid),
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true <- event.visibility in [:public, :unlisted] do
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case Cachex.fetch(:activity_pub, "event_" <> uuid, &get_event_full_by_uuid/1) do
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{status, %Event{} = event} when status in [:ok, :commit] ->
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(ObjectView.render("event.json", %{event: event |> Utils.make_event_data()}))
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else
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_ ->
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{:ignore, _} ->
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{:error, :not_found}
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end
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end
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defp get_event_full_by_uuid("event_" <> uuid) do
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with %Event{} = event <- Events.get_event_full_by_uuid(uuid),
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true <- event.visibility in [:public, :unlisted] do
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{:commit, event}
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else
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_ -> {:ignore, nil}
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end
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end
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@doc """
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Renders a Comment ActivityPub's representation
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"""
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@spec comment(Plug.Conn.t(), map()) :: Plug.Conn.t()
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def comment(conn, %{"uuid" => uuid}) do
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case Cachex.fetch(:activity_pub, "comment_" <> uuid, &get_comment_full_by_uuid/1) do
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{status, %Comment{} = comment} when status in [:ok, :commit] ->
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(
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ObjectView.render("comment.json", %{comment: comment |> Utils.make_comment_data()})
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)
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{:ignore, _} ->
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{:error, :not_found}
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end
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end
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defp get_comment_full_by_uuid("comment_" <> uuid) do
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with %Comment{} = comment <- Events.get_comment_full_from_uuid(uuid) do
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# Comments are always public for now
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# TODO : Make comments maybe restricted
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# true <- comment.public do
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conn
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|> put_resp_header("content-type", "application/activity+json")
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|> json(ObjectView.render("comment.json", %{comment: comment |> Utils.make_comment_data()}))
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{:commit, comment}
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else
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_ ->
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{:error, :not_found}
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_ -> {:ignore, nil}
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end
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end
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@ -3,16 +3,22 @@ defmodule MobilizonWeb.ActivityPub.ObjectView do
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alias Mobilizon.Service.ActivityPub.Utils
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def render("event.json", %{event: event}) do
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{:ok, html, []} = Earmark.as_html(event["summary"])
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event = %{
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"type" => "Event",
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"actor" => event["actor"],
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"attributedTo" => event["actor"],
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"id" => event["id"],
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"name" => event["title"],
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"category" => event["category"],
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"content" => html,
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"source" => %{
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"content" => event["summary"],
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"mediaType" => "text/html"
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# "published" => Timex.format!(event.inserted_at, "{ISO:Extended}"),
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# "updated" => Timex.format!(event.updated_at, "{ISO:Extended}")
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"mediaType" => "text/markdown"
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},
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"mediaType" => "text/html",
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"published" => event["publish_at"],
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"updated" => event["updated_at"]
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}
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Map.merge(event, Utils.make_json_ld_header())
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@ -283,16 +283,20 @@ defmodule Mobilizon.Service.ActivityPub.Utils do
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@spec make_event_data(Event.t(), list(String.t())) :: map()
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def make_event_data(
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%Event{title: title, organizer_actor: actor, uuid: uuid},
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%Event{} = event,
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to \\ ["https://www.w3.org/ns/activitystreams#Public"]
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) do
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%{
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"type" => "Event",
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"to" => to,
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"title" => title,
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"actor" => actor.url,
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"uuid" => uuid,
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"id" => "#{MobilizonWeb.Endpoint.url()}/events/#{uuid}"
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"title" => event.title,
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"actor" => event.organizer_actor.url,
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"uuid" => event.uuid,
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"category" => event.category,
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"summary" => event.description,
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"publish_at" => (event.publish_at || event.inserted_at) |> DateTime.to_iso8601(),
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"updated_at" => event.updated_at |> DateTime.to_iso8601(),
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"id" => "#{MobilizonWeb.Endpoint.url()}/events/#{event.uuid}"
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}
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end
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@ -72,11 +72,10 @@ defmodule Mobilizon.Service.Feed do
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defp get_entry(%Event{} = event) do
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with {:ok, html, []} <- Earmark.as_html(event.description) do
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entry =
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Entry.new(event.url, event.inserted_at, event.title)
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Entry.new(event.url, event.publish_at || event.inserted_at, event.title)
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|> Entry.link(event.url, rel: "alternate", type: "text/html")
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|> Entry.content({:cdata, html}, type: "html")
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entry = if event.publish_at, do: Entry.published(entry, event.publish_at), else: entry
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|> Entry.published(event.publish_at || event.inserted_at)
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# Add tags
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entry =
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