Revert "Merge branch 'revert-76fc9276' into 'neckbeard'"

This reverts merge request !2

CHANGELOG.md

@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Added
 - NodeInfo: `pleroma:api/v1/notifications:include_types_filter` to the `features` list.
 - Configuration: `:restrict_unauthenticated` setting, restrict access for unauthenticated users to timelines (public and federate), user profiles and statuses.
+- New HTTP adapter [gun](https://github.com/ninenines/gun). Gun adapter requires minimum OTP version of 22.2 otherwise Pleroma won’t start. For hackney OTP update is not required.
 <details>
   <summary>API Changes</summary>
 - Mastodon API: Support for `include_types` in `/api/v1/notifications`.

Dockerfile

@@ -12,7 +12,7 @@ RUN apk add git gcc g++ musl-dev make &&\
 	mkdir release &&\
 	mix release --path release
 
-FROM alpine:3.9
+FROM alpine:3.11
 
 ARG BUILD_DATE
 ARG VCS_REF
@@ -33,7 +33,7 @@ ARG DATA=/var/lib/pleroma
 
 RUN echo "http://nl.alpinelinux.org/alpine/latest-stable/community" >> /etc/apk/repositories &&\
 	apk update &&\
-	apk add ncurses postgresql-client &&\
+	apk add imagemagick ncurses postgresql-client &&\
 	adduser --system --shell /bin/false --home ${HOME} pleroma &&\
 	mkdir -p ${DATA}/uploads &&\
 	mkdir -p ${DATA}/static &&\

benchmarks/load_testing/activities.ex

@@ -0,0 +1,557 @@
+defmodule Pleroma.LoadTesting.Activities do
+  @moduledoc """
+  Module for generating different activities.
+  """
+  import Ecto.Query
+  import Pleroma.LoadTesting.Helper, only: [to_sec: 1]
+
+  alias Ecto.UUID
+  alias Pleroma.Constants
+  alias Pleroma.LoadTesting.Users
+  alias Pleroma.Repo
+  alias Pleroma.Web.CommonAPI
+
+  require Constants
+
+  @defaults [
+    iterations: 170,
+    friends_used: 20,
+    non_friends_used: 20
+  ]
+
+  @max_concurrency 10
+
+  @visibility ~w(public private direct unlisted)
+  @types ~w(simple emoji mentions hell_thread attachment tag like reblog simple_thread remote)
+  @groups ~w(user friends non_friends)
+
+  @spec generate(User.t(), keyword()) :: :ok
+  def generate(user, opts \\ []) do
+    {:ok, _} =
+      Agent.start_link(fn -> %{} end,
+        name: :benchmark_state
+      )
+
+    opts = Keyword.merge(@defaults, opts)
+
+    friends =
+      user
+      |> Users.get_users(limit: opts[:friends_used], local: :local, friends?: true)
+      |> Enum.shuffle()
+
+    non_friends =
+      user
+      |> Users.get_users(limit: opts[:non_friends_used], local: :local, friends?: false)
+      |> Enum.shuffle()
+
+    task_data =
+      for visibility <- @visibility,
+          type <- @types,
+          group <- @groups,
+          do: {visibility, type, group}
+
+    IO.puts("Starting generating #{opts[:iterations]} iterations of activities...")
+
+    friends_thread = Enum.take(friends, 5)
+    non_friends_thread = Enum.take(friends, 5)
+
+    public_long_thread = fn ->
+      generate_long_thread("public", user, friends_thread, non_friends_thread, opts)
+    end
+
+    private_long_thread = fn ->
+      generate_long_thread("private", user, friends_thread, non_friends_thread, opts)
+    end
+
+    iterations = opts[:iterations]
+
+    {time, _} =
+      :timer.tc(fn ->
+        Enum.each(
+          1..iterations,
+          fn
+            i when i == iterations - 2 ->
+              spawn(public_long_thread)
+              spawn(private_long_thread)
+              generate_activities(user, friends, non_friends, Enum.shuffle(task_data), opts)
+
+            _ ->
+              generate_activities(user, friends, non_friends, Enum.shuffle(task_data), opts)
+          end
+        )
+      end)
+
+    IO.puts("Generating iterations of activities took #{to_sec(time)} sec.\n")
+    :ok
+  end
+
+  def generate_power_intervals(opts \\ []) do
+    count = Keyword.get(opts, :count, 20)
+    power = Keyword.get(opts, :power, 2)
+    IO.puts("Generating #{count} intervals for a power #{power} series...")
+    counts = Enum.map(1..count, fn n -> :math.pow(n, power) end)
+    sum = Enum.sum(counts)
+
+    densities =
+      Enum.map(counts, fn c ->
+        c / sum
+      end)
+
+    densities
+    |> Enum.reduce(0, fn density, acc ->
+      if acc == 0 do
+        [{0, density}]
+      else
+        [{_, lower} | _] = acc
+        [{lower, lower + density} | acc]
+      end
+    end)
+    |> Enum.reverse()
+  end
+
+  def generate_tagged_activities(opts \\ []) do
+    tag_count = Keyword.get(opts, :tag_count, 20)
+    users = Keyword.get(opts, :users, Repo.all(Pleroma.User))
+    activity_count = Keyword.get(opts, :count, 200_000)
+
+    intervals = generate_power_intervals(count: tag_count)
+
+    IO.puts(
+      "Generating #{activity_count} activities using #{tag_count} different tags of format `tag_n`, starting at tag_0"
+    )
+
+    Enum.each(1..activity_count, fn _ ->
+      random = :rand.uniform()
+      i = Enum.find_index(intervals, fn {lower, upper} -> lower <= random && upper > random end)
+      CommonAPI.post(Enum.random(users), %{"status" => "a post with the tag #tag_#{i}"})
+    end)
+  end
+
+  defp generate_long_thread(visibility, user, friends, non_friends, _opts) do
+    group =
+      if visibility == "public",
+        do: "friends",
+        else: "user"
+
+    tasks = get_reply_tasks(visibility, group) |> Stream.cycle() |> Enum.take(50)
+
+    {:ok, activity} =
+      CommonAPI.post(user, %{
+        "status" => "Start of #{visibility} long thread",
+        "visibility" => visibility
+      })
+
+    Agent.update(:benchmark_state, fn state ->
+      key =
+        if visibility == "public",
+          do: :public_thread,
+          else: :private_thread
+
+      Map.put(state, key, activity)
+    end)
+
+    acc = {activity.id, ["@" <> user.nickname, "reply to long thread"]}
+    insert_replies_for_long_thread(tasks, visibility, user, friends, non_friends, acc)
+    IO.puts("Generating #{visibility} long thread ended\n")
+  end
+
+  defp insert_replies_for_long_thread(tasks, visibility, user, friends, non_friends, acc) do
+    Enum.reduce(tasks, acc, fn
+      "friend", {id, data} ->
+        friend = Enum.random(friends)
+        insert_reply(friend, List.delete(data, "@" <> friend.nickname), id, visibility)
+
+      "non_friend", {id, data} ->
+        non_friend = Enum.random(non_friends)
+        insert_reply(non_friend, List.delete(data, "@" <> non_friend.nickname), id, visibility)
+
+      "user", {id, data} ->
+        insert_reply(user, List.delete(data, "@" <> user.nickname), id, visibility)
+    end)
+  end
+
+  defp generate_activities(user, friends, non_friends, task_data, opts) do
+    Task.async_stream(
+      task_data,
+      fn {visibility, type, group} ->
+        insert_activity(type, visibility, group, user, friends, non_friends, opts)
+      end,
+      max_concurrency: @max_concurrency,
+      timeout: 30_000
+    )
+    |> Stream.run()
+  end
+
+  defp insert_activity("simple", visibility, group, user, friends, non_friends, _opts) do
+    {:ok, _activity} =
+      group
+      |> get_actor(user, friends, non_friends)
+      |> CommonAPI.post(%{"status" => "Simple status", "visibility" => visibility})
+  end
+
+  defp insert_activity("emoji", visibility, group, user, friends, non_friends, _opts) do
+    {:ok, _activity} =
+      group
+      |> get_actor(user, friends, non_friends)
+      |> CommonAPI.post(%{
+        "status" => "Simple status with emoji :firefox:",
+        "visibility" => visibility
+      })
+  end
+
+  defp insert_activity("mentions", visibility, group, user, friends, non_friends, _opts) do
+    user_mentions =
+      get_random_mentions(friends, Enum.random(0..3)) ++
+        get_random_mentions(non_friends, Enum.random(0..3))
+
+    user_mentions =
+      if Enum.random([true, false]),
+        do: ["@" <> user.nickname | user_mentions],
+        else: user_mentions
+
+    {:ok, _activity} =
+      group
+      |> get_actor(user, friends, non_friends)
+      |> CommonAPI.post(%{
+        "status" => Enum.join(user_mentions, ", ") <> " simple status with mentions",
+        "visibility" => visibility
+      })
+  end
+
+  defp insert_activity("hell_thread", visibility, group, user, friends, non_friends, _opts) do
+    mentions =
+      with {:ok, nil} <- Cachex.get(:user_cache, "hell_thread_mentions") do
+        cached =
+          ([user | Enum.take(friends, 10)] ++ Enum.take(non_friends, 10))
+          |> Enum.map(&"@#{&1.nickname}")
+          |> Enum.join(", ")
+
+        Cachex.put(:user_cache, "hell_thread_mentions", cached)
+        cached
+      else
+        {:ok, cached} -> cached
+      end
+
+    {:ok, _activity} =
+      group
+      |> get_actor(user, friends, non_friends)
+      |> CommonAPI.post(%{
+        "status" => mentions <> " hell thread status",
+        "visibility" => visibility
+      })
+  end
+
+  defp insert_activity("attachment", visibility, group, user, friends, non_friends, _opts) do
+    actor = get_actor(group, user, friends, non_friends)
+
+    obj_data = %{
+      "actor" => actor.ap_id,
+      "name" => "4467-11.jpg",
+      "type" => "Document",
+      "url" => [
+        %{
+          "href" =>
+            "#{Pleroma.Web.base_url()}/media/b1b873552422a07bf53af01f3c231c841db4dfc42c35efde681abaf0f2a4eab7.jpg",
+          "mediaType" => "image/jpeg",
+          "type" => "Link"
+        }
+      ]
+    }
+
+    object = Repo.insert!(%Pleroma.Object{data: obj_data})
+
+    {:ok, _activity} =
+      CommonAPI.post(actor, %{
+        "status" => "Post with attachment",
+        "visibility" => visibility,
+        "media_ids" => [object.id]
+      })
+  end
+
+  defp insert_activity("tag", visibility, group, user, friends, non_friends, _opts) do
+    {:ok, _activity} =
+      group
+      |> get_actor(user, friends, non_friends)
+      |> CommonAPI.post(%{"status" => "Status with #tag", "visibility" => visibility})
+  end
+
+  defp insert_activity("like", visibility, group, user, friends, non_friends, opts) do
+    actor = get_actor(group, user, friends, non_friends)
+
+    with activity_id when not is_nil(activity_id) <- get_random_create_activity_id(),
+         {:ok, _activity, _object} <- CommonAPI.favorite(activity_id, actor) do
+      :ok
+    else
+      {:error, _} ->
+        insert_activity("like", visibility, group, user, friends, non_friends, opts)
+
+      nil ->
+        Process.sleep(15)
+        insert_activity("like", visibility, group, user, friends, non_friends, opts)
+    end
+  end
+
+  defp insert_activity("reblog", visibility, group, user, friends, non_friends, opts) do
+    actor = get_actor(group, user, friends, non_friends)
+
+    with activity_id when not is_nil(activity_id) <- get_random_create_activity_id(),
+         {:ok, _activity, _object} <- CommonAPI.repeat(activity_id, actor) do
+      :ok
+    else
+      {:error, _} ->
+        insert_activity("reblog", visibility, group, user, friends, non_friends, opts)
+
+      nil ->
+        Process.sleep(15)
+        insert_activity("reblog", visibility, group, user, friends, non_friends, opts)
+    end
+  end
+
+  defp insert_activity("simple_thread", visibility, group, user, friends, non_friends, _opts)
+       when visibility in ["public", "unlisted", "private"] do
+    actor = get_actor(group, user, friends, non_friends)
+    tasks = get_reply_tasks(visibility, group)
+
+    {:ok, activity} =
+      CommonAPI.post(user, %{"status" => "Simple status", "visibility" => "unlisted"})
+
+    acc = {activity.id, ["@" <> actor.nickname, "reply to status"]}
+    insert_replies(tasks, visibility, user, friends, non_friends, acc)
+  end
+
+  defp insert_activity("simple_thread", "direct", group, user, friends, non_friends, _opts) do
+    actor = get_actor(group, user, friends, non_friends)
+    tasks = get_reply_tasks("direct", group)
+
+    list =
+      case group do
+        "non_friends" ->
+          Enum.take(non_friends, 3)
+
+        _ ->
+          Enum.take(friends, 3)
+      end
+
+    data = Enum.map(list, &("@" <> &1.nickname))
+
+    {:ok, activity} =
+      CommonAPI.post(actor, %{
+        "status" => Enum.join(data, ", ") <> "simple status",
+        "visibility" => "direct"
+      })
+
+    acc = {activity.id, ["@" <> user.nickname | data] ++ ["reply to status"]}
+    insert_direct_replies(tasks, user, list, acc)
+  end
+
+  defp insert_activity("remote", _, "user", _, _, _, _), do: :ok
+
+  defp insert_activity("remote", visibility, group, user, _friends, _non_friends, opts) do
+    remote_friends =
+      Users.get_users(user, limit: opts[:friends_used], local: :external, friends?: true)
+
+    remote_non_friends =
+      Users.get_users(user, limit: opts[:non_friends_used], local: :external, friends?: false)
+
+    actor = get_actor(group, user, remote_friends, remote_non_friends)
+
+    {act_data, obj_data} = prepare_activity_data(actor, visibility, user)
+    {activity_data, object_data} = other_data(actor)
+
+    activity_data
+    |> Map.merge(act_data)
+    |> Map.put("object", Map.merge(object_data, obj_data))
+    |> Pleroma.Web.ActivityPub.ActivityPub.insert(false)
+  end
+
+  defp get_actor("user", user, _friends, _non_friends), do: user
+  defp get_actor("friends", _user, friends, _non_friends), do: Enum.random(friends)
+  defp get_actor("non_friends", _user, _friends, non_friends), do: Enum.random(non_friends)
+
+  defp other_data(actor) do
+    %{host: host} = URI.parse(actor.ap_id)
+    datetime = DateTime.utc_now()
+    context_id = "http://#{host}:4000/contexts/#{UUID.generate()}"
+    activity_id = "http://#{host}:4000/activities/#{UUID.generate()}"
+    object_id = "http://#{host}:4000/objects/#{UUID.generate()}"
+
+    activity_data = %{
+      "actor" => actor.ap_id,
+      "context" => context_id,
+      "id" => activity_id,
+      "published" => datetime,
+      "type" => "Create",
+      "directMessage" => false
+    }
+
+    object_data = %{
+      "actor" => actor.ap_id,
+      "attachment" => [],
+      "attributedTo" => actor.ap_id,
+      "bcc" => [],
+      "bto" => [],
+      "content" => "Remote post",
+      "context" => context_id,
+      "conversation" => context_id,
+      "emoji" => %{},
+      "id" => object_id,
+      "published" => datetime,
+      "sensitive" => false,
+      "summary" => "",
+      "tag" => [],
+      "to" => ["https://www.w3.org/ns/activitystreams#Public"],
+      "type" => "Note"
+    }
+
+    {activity_data, object_data}
+  end
+
+  defp prepare_activity_data(actor, "public", _mention) do
+    obj_data = %{
+      "cc" => [actor.follower_address],
+      "to" => [Constants.as_public()]
+    }
+
+    act_data = %{
+      "cc" => [actor.follower_address],
+      "to" => [Constants.as_public()]
+    }
+
+    {act_data, obj_data}
+  end
+
+  defp prepare_activity_data(actor, "private", _mention) do
+    obj_data = %{
+      "cc" => [],
+      "to" => [actor.follower_address]
+    }
+
+    act_data = %{
+      "cc" => [],
+      "to" => [actor.follower_address]
+    }
+
+    {act_data, obj_data}
+  end
+
+  defp prepare_activity_data(actor, "unlisted", _mention) do
+    obj_data = %{
+      "cc" => [Constants.as_public()],
+      "to" => [actor.follower_address]
+    }
+
+    act_data = %{
+      "cc" => [Constants.as_public()],
+      "to" => [actor.follower_address]
+    }
+
+    {act_data, obj_data}
+  end
+
+  defp prepare_activity_data(_actor, "direct", mention) do
+    %{host: mentioned_host} = URI.parse(mention.ap_id)
+
+    obj_data = %{
+      "cc" => [],
+      "content" =>
+        "<span class=\"h-card\"><a class=\"u-url mention\" href=\"#{mention.ap_id}\" rel=\"ugc\">@<span>#{
+          mention.nickname
+        }</span></a></span> direct message",
+      "tag" => [
+        %{
+          "href" => mention.ap_id,
+          "name" => "@#{mention.nickname}@#{mentioned_host}",
+          "type" => "Mention"
+        }
+      ],
+      "to" => [mention.ap_id]
+    }
+
+    act_data = %{
+      "cc" => [],
+      "directMessage" => true,
+      "to" => [mention.ap_id]
+    }
+
+    {act_data, obj_data}
+  end
+
+  defp get_reply_tasks("public", "user"), do: ~w(friend non_friend user)
+  defp get_reply_tasks("public", "friends"), do: ~w(non_friend user friend)
+  defp get_reply_tasks("public", "non_friends"), do: ~w(user friend non_friend)
+
+  defp get_reply_tasks(visibility, "user") when visibility in ["unlisted", "private"],
+    do: ~w(friend user friend)
+
+  defp get_reply_tasks(visibility, "friends") when visibility in ["unlisted", "private"],
+    do: ~w(user friend user)
+
+  defp get_reply_tasks(visibility, "non_friends") when visibility in ["unlisted", "private"],
+    do: []
+
+  defp get_reply_tasks("direct", "user"), do: ~w(friend user friend)
+  defp get_reply_tasks("direct", "friends"), do: ~w(user friend user)
+  defp get_reply_tasks("direct", "non_friends"), do: ~w(user non_friend user)
+
+  defp insert_replies(tasks, visibility, user, friends, non_friends, acc) do
+    Enum.reduce(tasks, acc, fn
+      "friend", {id, data} ->
+        friend = Enum.random(friends)
+        insert_reply(friend, data, id, visibility)
+
+      "non_friend", {id, data} ->
+        non_friend = Enum.random(non_friends)
+        insert_reply(non_friend, data, id, visibility)
+
+      "user", {id, data} ->
+        insert_reply(user, data, id, visibility)
+    end)
+  end
+
+  defp insert_direct_replies(tasks, user, list, acc) do
+    Enum.reduce(tasks, acc, fn
+      group, {id, data} when group in ["friend", "non_friend"] ->
+        actor = Enum.random(list)
+
+        {reply_id, _} =
+          insert_reply(actor, List.delete(data, "@" <> actor.nickname), id, "direct")
+
+        {reply_id, data}
+
+      "user", {id, data} ->
+        {reply_id, _} = insert_reply(user, List.delete(data, "@" <> user.nickname), id, "direct")
+        {reply_id, data}
+    end)
+  end
+
+  defp insert_reply(actor, data, activity_id, visibility) do
+    {:ok, reply} =
+      CommonAPI.post(actor, %{
+        "status" => Enum.join(data, ", "),
+        "visibility" => visibility,
+        "in_reply_to_status_id" => activity_id
+      })
+
+    {reply.id, ["@" <> actor.nickname | data]}
+  end
+
+  defp get_random_mentions(_users, count) when count == 0, do: []
+
+  defp get_random_mentions(users, count) do
+    users
+    |> Enum.shuffle()
+    |> Enum.take(count)
+    |> Enum.map(&"@#{&1.nickname}")
+  end
+
+  defp get_random_create_activity_id do
+    Repo.one(
+      from(a in Pleroma.Activity,
+        where: fragment("(?)->>'type' = ?", a.data, ^"Create"),
+        order_by: fragment("RANDOM()"),
+        limit: 1,
+        select: a.id
+      )
+    )
+  end
+end

benchmarks/load_testing/fetcher.ex

@@ -1,260 +1,489 @@
 defmodule Pleroma.LoadTesting.Fetcher do
-  use Pleroma.LoadTesting.Helper
-
-  def fetch_user(user) do
-    Benchee.run(%{
-      "By id" => fn -> Repo.get_by(User, id: user.id) end,
-      "By ap_id" => fn -> Repo.get_by(User, ap_id: user.ap_id) end,
-      "By email" => fn -> Repo.get_by(User, email: user.email) end,
-      "By nickname" => fn -> Repo.get_by(User, nickname: user.nickname) end
-    })
+  alias Pleroma.Activity
+  alias Pleroma.Pagination
+  alias Pleroma.Repo
+  alias Pleroma.User
+  alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.MastodonAPI.MastodonAPI
+  alias Pleroma.Web.MastodonAPI.StatusView
+
+  @spec run_benchmarks(User.t()) :: any()
+  def run_benchmarks(user) do
+    fetch_user(user)
+    fetch_timelines(user)
+    render_views(user)
   end
 
-  def query_timelines(user) do
-    home_timeline_params = %{
-      "count" => 20,
-      "with_muted" => true,
-      "type" => ["Create", "Announce"],
+  defp formatters do
+    [
+      Benchee.Formatters.Console
+    ]
+  end
+
+  defp fetch_user(user) do
+    Benchee.run(
+      %{
+        "By id" => fn -> Repo.get_by(User, id: user.id) end,
+        "By ap_id" => fn -> Repo.get_by(User, ap_id: user.ap_id) end,
+        "By email" => fn -> Repo.get_by(User, email: user.email) end,
+        "By nickname" => fn -> Repo.get_by(User, nickname: user.nickname) end
+      },
+      formatters: formatters()
+    )
+  end
+
+  defp fetch_timelines(user) do
+    fetch_home_timeline(user)
+    fetch_direct_timeline(user)
+    fetch_public_timeline(user)
+    fetch_public_timeline(user, :local)
+    fetch_public_timeline(user, :tag)
+    fetch_notifications(user)
+    fetch_favourites(user)
+    fetch_long_thread(user)
+  end
+
+  defp render_views(user) do
+    render_timelines(user)
+    render_long_thread(user)
+  end
+
+  defp opts_for_home_timeline(user) do
+    %{
       "blocking_user" => user,
+      "count" => "20",
       "muting_user" => user,
-      "user" => user
+      "type" => ["Create", "Announce"],
+      "user" => user,
+      "with_muted" => "true"
     }
+  end
 
-    mastodon_public_timeline_params = %{
-      "count" => 20,
-      "local_only" => true,
-      "only_media" => "false",
+  defp fetch_home_timeline(user) do
+    opts = opts_for_home_timeline(user)
+
+    recipients = [user.ap_id | User.following(user)]
+
+    first_page_last =
+      ActivityPub.fetch_activities(recipients, opts) |> Enum.reverse() |> List.last()
+
+    second_page_last =
+      ActivityPub.fetch_activities(recipients, Map.put(opts, "max_id", first_page_last.id))
+      |> Enum.reverse()
+      |> List.last()
+
+    third_page_last =
+      ActivityPub.fetch_activities(recipients, Map.put(opts, "max_id", second_page_last.id))
+      |> Enum.reverse()
+      |> List.last()
+
+    forth_page_last =
+      ActivityPub.fetch_activities(recipients, Map.put(opts, "max_id", third_page_last.id))
+      |> Enum.reverse()
+      |> List.last()
+
+    Benchee.run(
+      %{
+        "home timeline" => fn opts -> ActivityPub.fetch_activities(recipients, opts) end
+      },
+      inputs: %{
+        "1 page" => opts,
+        "2 page" => Map.put(opts, "max_id", first_page_last.id),
+        "3 page" => Map.put(opts, "max_id", second_page_last.id),
+        "4 page" => Map.put(opts, "max_id", third_page_last.id),
+        "5 page" => Map.put(opts, "max_id", forth_page_last.id),
+        "1 page only media" => Map.put(opts, "only_media", "true"),
+        "2 page only media" =>
+          Map.put(opts, "max_id", first_page_last.id) |> Map.put("only_media", "true"),
+        "3 page only media" =>
+          Map.put(opts, "max_id", second_page_last.id) |> Map.put("only_media", "true"),
+        "4 page only media" =>
+          Map.put(opts, "max_id", third_page_last.id) |> Map.put("only_media", "true"),
+        "5 page only media" =>
+          Map.put(opts, "max_id", forth_page_last.id) |> Map.put("only_media", "true")
+      },
+      formatters: formatters()
+    )
+  end
+
+  defp opts_for_direct_timeline(user) do
+    %{
+      :visibility => "direct",
+      "blocking_user" => user,
+      "count" => "20",
+      "type" => "Create",
+      "user" => user,
+      "with_muted" => "true"
+    }
+  end
+
+  defp fetch_direct_timeline(user) do
+    recipients = [user.ap_id]
+
+    opts = opts_for_direct_timeline(user)
+
+    first_page_last =
+      recipients
+      |> ActivityPub.fetch_activities_query(opts)
+      |> Pagination.fetch_paginated(opts)
+      |> List.last()
+
+    opts2 = Map.put(opts, "max_id", first_page_last.id)
+
+    second_page_last =
+      recipients
+      |> ActivityPub.fetch_activities_query(opts2)
+      |> Pagination.fetch_paginated(opts2)
+      |> List.last()
+
+    opts3 = Map.put(opts, "max_id", second_page_last.id)
+
+    third_page_last =
+      recipients
+      |> ActivityPub.fetch_activities_query(opts3)
+      |> Pagination.fetch_paginated(opts3)
+      |> List.last()
+
+    opts4 = Map.put(opts, "max_id", third_page_last.id)
+
+    forth_page_last =
+      recipients
+      |> ActivityPub.fetch_activities_query(opts4)
+      |> Pagination.fetch_paginated(opts4)
+      |> List.last()
+
+    Benchee.run(
+      %{
+        "direct timeline" => fn opts ->
+          ActivityPub.fetch_activities_query(recipients, opts) |> Pagination.fetch_paginated(opts)
+        end
+      },
+      inputs: %{
+        "1 page" => opts,
+        "2 page" => opts2,
+        "3 page" => opts3,
+        "4 page" => opts4,
+        "5 page" => Map.put(opts4, "max_id", forth_page_last.id)
+      },
+      formatters: formatters()
+    )
+  end
+
+  defp opts_for_public_timeline(user) do
+    %{
       "type" => ["Create", "Announce"],
-      "with_muted" => "true",
+      "local_only" => false,
       "blocking_user" => user,
       "muting_user" => user
     }
+  end
 
-    mastodon_federated_timeline_params = %{
-      "count" => 20,
-      "only_media" => "false",
+  defp opts_for_public_timeline(user, :local) do
+    %{
       "type" => ["Create", "Announce"],
-      "with_muted" => "true",
+      "local_only" => true,
       "blocking_user" => user,
       "muting_user" => user
     }
+  end
 
-    following = User.following(user)
-
-    Benchee.run(%{
-      "User home timeline" => fn ->
-        Pleroma.Web.ActivityPub.ActivityPub.fetch_activities(
-          following,
-          home_timeline_params
-        )
-      end,
-      "User mastodon public timeline" => fn ->
-        Pleroma.Web.ActivityPub.ActivityPub.fetch_public_activities(
-          mastodon_public_timeline_params
-        )
-      end,
-      "User mastodon federated public timeline" => fn ->
-        Pleroma.Web.ActivityPub.ActivityPub.fetch_public_activities(
-          mastodon_federated_timeline_params
-        )
-      end
-    })
-
-    home_activities =
-      Pleroma.Web.ActivityPub.ActivityPub.fetch_activities(
-        following,
-        home_timeline_params
-      )
+  defp opts_for_public_timeline(user, :tag) do
+    %{
+      "blocking_user" => user,
+      "count" => "20",
+      "local_only" => nil,
+      "muting_user" => user,
+      "tag" => ["tag"],
+      "tag_all" => [],
+      "tag_reject" => [],
+      "type" => "Create",
+      "user" => user,
+      "with_muted" => "true"
+    }
+  end
 
-    public_activities =
-      Pleroma.Web.ActivityPub.ActivityPub.fetch_public_activities(mastodon_public_timeline_params)
+  defp fetch_public_timeline(user) do
+    opts = opts_for_public_timeline(user)
 
-    public_federated_activities =
-      Pleroma.Web.ActivityPub.ActivityPub.fetch_public_activities(
-        mastodon_federated_timeline_params
-      )
+    fetch_public_timeline(opts, "public timeline")
+  end
+
+  defp fetch_public_timeline(user, :local) do
+    opts = opts_for_public_timeline(user, :local)
 
-    Benchee.run(%{
-      "Rendering home timeline" => fn ->
-        Pleroma.Web.MastodonAPI.StatusView.render("index.json", %{
-          activities: home_activities,
-          for: user,
-          as: :activity
-        })
-      end,
-      "Rendering public timeline" => fn ->
-        Pleroma.Web.MastodonAPI.StatusView.render("index.json", %{
-          activities: public_activities,
-          for: user,
-          as: :activity
-        })
-      end,
-      "Rendering public federated timeline" => fn ->
-        Pleroma.Web.MastodonAPI.StatusView.render("index.json", %{
-          activities: public_federated_activities,
-          for: user,
-          as: :activity
-        })
-      end,
-      "Rendering favorites timeline" => fn ->
-        conn = Phoenix.ConnTest.build_conn(:get, "http://localhost:4001/api/v1/favourites", nil)
-        Pleroma.Web.MastodonAPI.StatusController.favourites(
-          %Plug.Conn{conn |
-                     assigns: %{user: user},
-                     query_params:  %{"limit" => "0"},
-                     body_params: %{},
-                     cookies: %{},
-                     params: %{},
-                     path_params: %{},
-                     private: %{
-                       Pleroma.Web.Router => {[], %{}},
-                       phoenix_router: Pleroma.Web.Router,
-                       phoenix_action: :favourites,
-                       phoenix_controller: Pleroma.Web.MastodonAPI.StatusController,
-                       phoenix_endpoint: Pleroma.Web.Endpoint,
-                       phoenix_format: "json",
-                       phoenix_layout: {Pleroma.Web.LayoutView, "app.html"},
-                       phoenix_recycled: true,
-
-                       phoenix_view: Pleroma.Web.MastodonAPI.StatusView,
-                       plug_session: %{"user_id" => user.id},
-                       plug_session_fetch: :done,
-                       plug_session_info: :write,
-                       plug_skip_csrf_protection: true
-                     }
-          },
-          %{})
-      end,
-    })
+    fetch_public_timeline(opts, "public timeline only local")
   end
 
-  def query_notifications(user) do
-    without_muted_params = %{"count" => "20", "with_muted" => "false"}
-    with_muted_params = %{"count" => "20", "with_muted" => "true"}
-
-    Benchee.run(%{
-      "Notifications without muted" => fn ->
-        Pleroma.Web.MastodonAPI.MastodonAPI.get_notifications(user, without_muted_params)
-      end,
-      "Notifications with muted" => fn ->
-        Pleroma.Web.MastodonAPI.MastodonAPI.get_notifications(user, with_muted_params)
-      end
-    })
-
-    without_muted_notifications =
-      Pleroma.Web.MastodonAPI.MastodonAPI.get_notifications(user, without_muted_params)
-
-    with_muted_notifications =
-      Pleroma.Web.MastodonAPI.MastodonAPI.get_notifications(user, with_muted_params)
-
-    Benchee.run(%{
-      "Render notifications without muted" => fn ->
-        Pleroma.Web.MastodonAPI.NotificationView.render("index.json", %{
-          notifications: without_muted_notifications,
-          for: user
-        })
-      end,
-      "Render notifications with muted" => fn ->
-        Pleroma.Web.MastodonAPI.NotificationView.render("index.json", %{
-          notifications: with_muted_notifications,
-          for: user
-        })
-      end
-    })
+  defp fetch_public_timeline(user, :tag) do
+    opts = opts_for_public_timeline(user, :tag)
+
+    fetch_public_timeline(opts, "hashtag timeline")
   end
 
-  def query_dms(user) do
-    params = %{
-      "count" => "20",
-      "with_muted" => "true",
-      "type" => "Create",
+  defp fetch_public_timeline(user, :only_media) do
+    opts = opts_for_public_timeline(user) |> Map.put("only_media", "true")
+
+    fetch_public_timeline(opts, "public timeline only media")
+  end
+
+  defp fetch_public_timeline(opts, title) when is_binary(title) do
+    first_page_last = ActivityPub.fetch_public_activities(opts) |> List.last()
+
+    second_page_last =
+      ActivityPub.fetch_public_activities(Map.put(opts, "max_id", first_page_last.id))
+      |> List.last()
+
+    third_page_last =
+      ActivityPub.fetch_public_activities(Map.put(opts, "max_id", second_page_last.id))
+      |> List.last()
+
+    forth_page_last =
+      ActivityPub.fetch_public_activities(Map.put(opts, "max_id", third_page_last.id))
+      |> List.last()
+
+    Benchee.run(
+      %{
+        title => fn opts ->
+          ActivityPub.fetch_public_activities(opts)
+        end
+      },
+      inputs: %{
+        "1 page" => opts,
+        "2 page" => Map.put(opts, "max_id", first_page_last.id),
+        "3 page" => Map.put(opts, "max_id", second_page_last.id),
+        "4 page" => Map.put(opts, "max_id", third_page_last.id),
+        "5 page" => Map.put(opts, "max_id", forth_page_last.id)
+      },
+      formatters: formatters()
+    )
+  end
+
+  defp opts_for_notifications do
+    %{"count" => "20", "with_muted" => "true"}
+  end
+
+  defp fetch_notifications(user) do
+    opts = opts_for_notifications()
+
+    first_page_last = MastodonAPI.get_notifications(user, opts) |> List.last()
+
+    second_page_last =
+      MastodonAPI.get_notifications(user, Map.put(opts, "max_id", first_page_last.id))
+      |> List.last()
+
+    third_page_last =
+      MastodonAPI.get_notifications(user, Map.put(opts, "max_id", second_page_last.id))
+      |> List.last()
+
+    forth_page_last =
+      MastodonAPI.get_notifications(user, Map.put(opts, "max_id", third_page_last.id))
+      |> List.last()
+
+    Benchee.run(
+      %{
+        "Notifications" => fn opts ->
+          MastodonAPI.get_notifications(user, opts)
+        end
+      },
+      inputs: %{
+        "1 page" => opts,
+        "2 page" => Map.put(opts, "max_id", first_page_last.id),
+        "3 page" => Map.put(opts, "max_id", second_page_last.id),
+        "4 page" => Map.put(opts, "max_id", third_page_last.id),
+        "5 page" => Map.put(opts, "max_id", forth_page_last.id)
+      },
+      formatters: formatters()
+    )
+  end
+
+  defp fetch_favourites(user) do
+    first_page_last = ActivityPub.fetch_favourites(user) |> List.last()
+
+    second_page_last =
+      ActivityPub.fetch_favourites(user, %{"max_id" => first_page_last.id}) |> List.last()
+
+    third_page_last =
+      ActivityPub.fetch_favourites(user, %{"max_id" => second_page_last.id}) |> List.last()
+
+    forth_page_last =
+      ActivityPub.fetch_favourites(user, %{"max_id" => third_page_last.id}) |> List.last()
+
+    Benchee.run(
+      %{
+        "Favourites" => fn opts ->
+          ActivityPub.fetch_favourites(user, opts)
+        end
+      },
+      inputs: %{
+        "1 page" => %{},
+        "2 page" => %{"max_id" => first_page_last.id},
+        "3 page" => %{"max_id" => second_page_last.id},
+        "4 page" => %{"max_id" => third_page_last.id},
+        "5 page" => %{"max_id" => forth_page_last.id}
+      },
+      formatters: formatters()
+    )
+  end
+
+  defp opts_for_long_thread(user) do
+    %{
       "blocking_user" => user,
-      "user" => user,
-      visibility: "direct"
+      "user" => user
     }
+  end
+
+  defp fetch_long_thread(user) do
+    %{public_thread: public, private_thread: private} =
+      Agent.get(:benchmark_state, fn state -> state end)
+
+    opts = opts_for_long_thread(user)
+
+    private_input = {private.data["context"], Map.put(opts, "exclude_id", private.id)}
 
-    Benchee.run(%{
-      "Direct messages with muted" => fn ->
-        Pleroma.Web.ActivityPub.ActivityPub.fetch_activities_query([user.ap_id], params)
-        |> Pleroma.Pagination.fetch_paginated(params)
-      end,
-      "Direct messages without muted" => fn ->
-        Pleroma.Web.ActivityPub.ActivityPub.fetch_activities_query([user.ap_id], params)
-        |> Pleroma.Pagination.fetch_paginated(Map.put(params, "with_muted", false))
-      end
-    })
-
-    dms_with_muted =
-      Pleroma.Web.ActivityPub.ActivityPub.fetch_activities_query([user.ap_id], params)
-      |> Pleroma.Pagination.fetch_paginated(params)
-
-    dms_without_muted =
-      Pleroma.Web.ActivityPub.ActivityPub.fetch_activities_query([user.ap_id], params)
-      |> Pleroma.Pagination.fetch_paginated(Map.put(params, "with_muted", false))
-
-    Benchee.run(%{
-      "Rendering dms with muted" => fn ->
-        Pleroma.Web.MastodonAPI.StatusView.render("index.json", %{
-          activities: dms_with_muted,
-          for: user,
-          as: :activity
-        })
-      end,
-      "Rendering dms without muted" => fn ->
-        Pleroma.Web.MastodonAPI.StatusView.render("index.json", %{
-          activities: dms_without_muted,
-          for: user,
-          as: :activity
-        })
-      end
-    })
+    public_input = {public.data["context"], Map.put(opts, "exclude_id", public.id)}
+
+    Benchee.run(
+      %{
+        "fetch context" => fn {context, opts} ->
+          ActivityPub.fetch_activities_for_context(context, opts)
+        end
+      },
+      inputs: %{
+        "Private long thread" => private_input,
+        "Public long thread" => public_input
+      },
+      formatters: formatters()
+    )
   end
 
-  def query_long_thread(user, activity) do
-    Benchee.run(%{
-      "Fetch main post" => fn ->
-        Pleroma.Activity.get_by_id_with_object(activity.id)
-      end,
-      "Fetch context of main post" => fn ->
-        Pleroma.Web.ActivityPub.ActivityPub.fetch_activities_for_context(
-          activity.data["context"],
-          %{
-            "blocking_user" => user,
-            "user" => user,
-            "exclude_id" => activity.id
-          }
-        )
-      end
-    })
-
-    activity = Pleroma.Activity.get_by_id_with_object(activity.id)
-
-    context =
-      Pleroma.Web.ActivityPub.ActivityPub.fetch_activities_for_context(
-        activity.data["context"],
-        %{
-          "blocking_user" => user,
-          "user" => user,
-          "exclude_id" => activity.id
-        }
+  defp render_timelines(user) do
+    opts = opts_for_home_timeline(user)
+
+    recipients = [user.ap_id | User.following(user)]
+
+    home_activities = ActivityPub.fetch_activities(recipients, opts) |> Enum.reverse()
+
+    recipients = [user.ap_id]
+
+    opts = opts_for_direct_timeline(user)
+
+    direct_activities =
+      recipients
+      |> ActivityPub.fetch_activities_query(opts)
+      |> Pagination.fetch_paginated(opts)
+
+    opts = opts_for_public_timeline(user)
+
+    public_activities = ActivityPub.fetch_public_activities(opts)
+
+    opts = opts_for_public_timeline(user, :tag)
+
+    tag_activities = ActivityPub.fetch_public_activities(opts)
+
+    opts = opts_for_notifications()
+
+    notifications = MastodonAPI.get_notifications(user, opts)
+
+    favourites = ActivityPub.fetch_favourites(user)
+
+    Benchee.run(
+      %{
+        "Rendering home timeline" => fn ->
+          StatusView.render("index.json", %{
+            activities: home_activities,
+            for: user,
+            as: :activity
+          })
+        end,
+        "Rendering direct timeline" => fn ->
+          StatusView.render("index.json", %{
+            activities: direct_activities,
+            for: user,
+            as: :activity
+          })
+        end,
+        "Rendering public timeline" => fn ->
+          StatusView.render("index.json", %{
+            activities: public_activities,
+            for: user,
+            as: :activity
+          })
+        end,
+        "Rendering tag timeline" => fn ->
+          StatusView.render("index.json", %{
+            activities: tag_activities,
+            for: user,
+            as: :activity
+          })
+        end,
+        "Rendering notifications" => fn ->
+          Pleroma.Web.MastodonAPI.NotificationView.render("index.json", %{
+            notifications: notifications,
+            for: user
+          })
+        end,
+        "Rendering favourites timeline" => fn ->
+          StatusView.render("index.json", %{
+            activities: favourites,
+            for: user,
+            as: :activity
+          })
+        end
+      },
+      formatters: formatters()
+    )
+  end
+
+  defp render_long_thread(user) do
+    %{public_thread: public, private_thread: private} =
+      Agent.get(:benchmark_state, fn state -> state end)
+
+    opts = %{for: user}
+    public_activity = Activity.get_by_id_with_object(public.id)
+    private_activity = Activity.get_by_id_with_object(private.id)
+
+    Benchee.run(
+      %{
+        "render" => fn opts ->
+          StatusView.render("show.json", opts)
+        end
+      },
+      inputs: %{
+        "Public root" => Map.put(opts, :activity, public_activity),
+        "Private root" => Map.put(opts, :activity, private_activity)
+      },
+      formatters: formatters()
+    )
+
+    fetch_opts = opts_for_long_thread(user)
+
+    public_context =
+      ActivityPub.fetch_activities_for_context(
+        public.data["context"],
+        Map.put(fetch_opts, "exclude_id", public.id)
       )
 
-    Benchee.run(%{
-      "Render status" => fn ->
-        Pleroma.Web.MastodonAPI.StatusView.render("show.json", %{
-          activity: activity,
-          for: user
-        })
-      end,
-      "Render context" => fn ->
-        Pleroma.Web.MastodonAPI.StatusView.render(
-          "index.json",
-          for: user,
-          activities: context,
-          as: :activity
-        )
-        |> Enum.reverse()
-      end
-    })
+    private_context =
+      ActivityPub.fetch_activities_for_context(
+        private.data["context"],
+        Map.put(fetch_opts, "exclude_id", private.id)
+      )
+
+    Benchee.run(
+      %{
+        "render" => fn opts ->
+          StatusView.render("context.json", opts)
+        end
+      },
+      inputs: %{
+        "Public context" => %{user: user, activity: public_activity, activities: public_context},
+        "Private context" => %{
+          user: user,
+          activity: private_activity,
+          activities: private_context
+        }
+      },
+      formatters: formatters()
+    )
   end
 end

benchmarks/load_testing/generator.ex

@@ -1,410 +0,0 @@
-defmodule Pleroma.LoadTesting.Generator do
-  use Pleroma.LoadTesting.Helper
-  alias Pleroma.Web.CommonAPI
-
-  def generate_like_activities(user, posts) do
-    count_likes = Kernel.trunc(length(posts) / 4)
-    IO.puts("Starting generating #{count_likes} like activities...")
-
-    {time, _} =
-      :timer.tc(fn ->
-        Task.async_stream(
-          Enum.take_random(posts, count_likes),
-          fn post -> {:ok, _, _} = CommonAPI.favorite(post.id, user) end,
-          max_concurrency: 10,
-          timeout: 30_000
-        )
-        |> Stream.run()
-      end)
-
-    IO.puts("Inserting like activities take #{to_sec(time)} sec.\n")
-  end
-
-  def generate_users(opts) do
-    IO.puts("Starting generating #{opts[:users_max]} users...")
-    {time, users} = :timer.tc(fn -> do_generate_users(opts) end)
-
-    IO.puts("Inserting users took #{to_sec(time)} sec.\n")
-    users
-  end
-
-  defp do_generate_users(opts) do
-    max = Keyword.get(opts, :users_max)
-
-    Task.async_stream(
-      1..max,
-      &generate_user_data(&1),
-      max_concurrency: 10,
-      timeout: 30_000
-    )
-    |> Enum.to_list()
-  end
-
-  defp generate_user_data(i) do
-    remote = Enum.random([true, false])
-
-    user = %User{
-      name: "Test テスト User #{i}",
-      email: "user#{i}@example.com",
-      nickname: "nick#{i}",
-      password_hash:
-        "$pbkdf2-sha512$160000$bU.OSFI7H/yqWb5DPEqyjw$uKp/2rmXw12QqnRRTqTtuk2DTwZfF8VR4MYW2xMeIlqPR/UX1nT1CEKVUx2CowFMZ5JON8aDvURrZpJjSgqXrg",
-      bio: "Tester Number #{i}",
-      local: remote
-    }
-
-    user_urls =
-      if remote do
-        base_url =
-          Enum.random(["https://domain1.com", "https://domain2.com", "https://domain3.com"])
-
-        ap_id = "#{base_url}/users/#{user.nickname}"
-
-        %{
-          ap_id: ap_id,
-          follower_address: ap_id <> "/followers",
-          following_address: ap_id <> "/following"
-        }
-      else
-        %{
-          ap_id: User.ap_id(user),
-          follower_address: User.ap_followers(user),
-          following_address: User.ap_following(user)
-        }
-      end
-
-    user = Map.merge(user, user_urls)
-
-    Repo.insert!(user)
-  end
-
-  def generate_activities(user, users) do
-    do_generate_activities(user, users)
-  end
-
-  defp do_generate_activities(user, users) do
-    IO.puts("Starting generating 20000 common activities...")
-
-    {time, _} =
-      :timer.tc(fn ->
-        Task.async_stream(
-          1..20_000,
-          fn _ ->
-            do_generate_activity([user | users])
-          end,
-          max_concurrency: 10,
-          timeout: 30_000
-        )
-        |> Stream.run()
-      end)
-
-    IO.puts("Inserting common activities take #{to_sec(time)} sec.\n")
-
-    IO.puts("Starting generating 20000 activities with mentions...")
-
-    {time, _} =
-      :timer.tc(fn ->
-        Task.async_stream(
-          1..20_000,
-          fn _ ->
-            do_generate_activity_with_mention(user, users)
-          end,
-          max_concurrency: 10,
-          timeout: 30_000
-        )
-        |> Stream.run()
-      end)
-
-    IO.puts("Inserting activities with menthions take #{to_sec(time)} sec.\n")
-
-    IO.puts("Starting generating 10000 activities with threads...")
-
-    {time, _} =
-      :timer.tc(fn ->
-        Task.async_stream(
-          1..10_000,
-          fn _ ->
-            do_generate_threads([user | users])
-          end,
-          max_concurrency: 10,
-          timeout: 30_000
-        )
-        |> Stream.run()
-      end)
-
-    IO.puts("Inserting activities with threads take #{to_sec(time)} sec.\n")
-  end
-
-  defp do_generate_activity(users) do
-    post = %{
-      "status" => "Some status without mention with random user"
-    }
-
-    CommonAPI.post(Enum.random(users), post)
-  end
-
-  def generate_power_intervals(opts \\ []) do
-    count = Keyword.get(opts, :count, 20)
-    power = Keyword.get(opts, :power, 2)
-    IO.puts("Generating #{count} intervals for a power #{power} series...")
-    counts = Enum.map(1..count, fn n -> :math.pow(n, power) end)
-    sum = Enum.sum(counts)
-
-    densities =
-      Enum.map(counts, fn c ->
-        c / sum
-      end)
-
-    densities
-    |> Enum.reduce(0, fn density, acc ->
-      if acc == 0 do
-        [{0, density}]
-      else
-        [{_, lower} | _] = acc
-        [{lower, lower + density} | acc]
-      end
-    end)
-    |> Enum.reverse()
-  end
-
-  def generate_tagged_activities(opts \\ []) do
-    tag_count = Keyword.get(opts, :tag_count, 20)
-    users = Keyword.get(opts, :users, Repo.all(User))
-    activity_count = Keyword.get(opts, :count, 200_000)
-
-    intervals = generate_power_intervals(count: tag_count)
-
-    IO.puts(
-      "Generating #{activity_count} activities using #{tag_count} different tags of format `tag_n`, starting at tag_0"
-    )
-
-    Enum.each(1..activity_count, fn _ ->
-      random = :rand.uniform()
-      i = Enum.find_index(intervals, fn {lower, upper} -> lower <= random && upper > random end)
-      CommonAPI.post(Enum.random(users), %{"status" => "a post with the tag #tag_#{i}"})
-    end)
-  end
-
-  defp do_generate_activity_with_mention(user, users) do
-    mentions_cnt = Enum.random([2, 3, 4, 5])
-    with_user = Enum.random([true, false])
-    users = Enum.shuffle(users)
-    mentions_users = Enum.take(users, mentions_cnt)
-    mentions_users = if with_user, do: [user | mentions_users], else: mentions_users
-
-    mentions_str =
-      Enum.map(mentions_users, fn user -> "@" <> user.nickname end) |> Enum.join(", ")
-
-    post = %{
-      "status" => mentions_str <> "some status with mentions random users"
-    }
-
-    CommonAPI.post(Enum.random(users), post)
-  end
-
-  defp do_generate_threads(users) do
-    thread_length = Enum.random([2, 3, 4, 5])
-    actor = Enum.random(users)
-