Mix Tasks: Add pleroma.benchmarks.tags

lib/mix/tasks/pleroma/benchmarks/tags.ex

@@ -0,0 +1,57 @@
+defmodule Mix.Tasks.Pleroma.Benchmarks.Tags do
+  use Mix.Task
+  alias Pleroma.Repo
+  alias Pleroma.LoadTesting.Generator
+  import Ecto.Query
+
+  def run(_args) do
+    Mix.Pleroma.start_pleroma()
+    activities_count = Repo.aggregate(from(a in Pleroma.Activity), :count, :id)
+
+    if activities_count == 0 do
+      IO.puts("Did not find any activities, cleaning and generating")
+      clean_tables()
+      Generator.generate_users(users_max: 10)
+      Generator.generate_tagged_activities()
+    else
+      IO.puts("Found #{activities_count} activities, won't generate new ones")
+    end
+
+    tags = Enum.map(0..20, fn i -> {"For #tag_#{i}", "tag_#{i}"} end)
+
+    Enum.each(tags, fn {_, tag} ->
+      query =
+        from(o in Pleroma.Object,
+          where: fragment("(?)->'tag' \\? (?)", o.data, ^tag)
+        )
+
+      count = Repo.aggregate(query, :count, :id)
+      IO.puts("Database contains #{count} posts tagged with #{tag}")
+    end)
+
+    user = Repo.all(Pleroma.User) |> List.first()
+
+    Benchee.run(
+      %{
+        "Hashtag fetching" => fn tag ->
+          Pleroma.Web.MastodonAPI.TimelineController.hashtag_fetching(
+            %{
+              "tag" => tag
+            },
+            user,
+            false
+          )
+        end
+      },
+      inputs: tags,
+      time: 5
+    )
+  end
+
+  defp clean_tables do
+    IO.puts("Deleting old data...\n")
+    Ecto.Adapters.SQL.query!(Repo, "TRUNCATE users CASCADE;")
+    Ecto.Adapters.SQL.query!(Repo, "TRUNCATE activities CASCADE;")
+    Ecto.Adapters.SQL.query!(Repo, "TRUNCATE objects CASCADE;")
+  end
+end

lib/pleroma/web/mastodon_api/controllers/timeline_controller.ex

@@ -77,10 +77,7 @@ defmodule Pleroma.Web.MastodonAPI.TimelineController do
     |> render("index.json", activities: activities, for: user, as: :activity)
   end
 
-  # GET /api/v1/timelines/tag/:tag
-  def hashtag(%{assigns: %{user: user}} = conn, params) do
-    local_only = truthy_param?(params["local"])
-
+  def hashtag_fetching(params, user, local_only) do
     tags =
       [params["tag"], params["any"]]
       |> List.flatten()
@@ -98,7 +95,7 @@ defmodule Pleroma.Web.MastodonAPI.TimelineController do
       |> Map.get("none", [])
       |> Enum.map(&String.downcase(&1))
 
-    activities =
+    _activities =
       params
       |> Map.put("type", "Create")
       |> Map.put("local_only", local_only)
@@ -109,6 +106,13 @@ defmodule Pleroma.Web.MastodonAPI.TimelineController do
       |> Map.put("tag_all", tag_all)
       |> Map.put("tag_reject", tag_reject)
       |> ActivityPub.fetch_public_activities()
+  end
+
+  # GET /api/v1/timelines/tag/:tag
+  def hashtag(%{assigns: %{user: user}} = conn, params) do
+    local_only = truthy_param?(params["local"])
+
+    activities = hashtag_fetching(params, user, local_only)
 
     conn
     |> add_link_headers(activities, %{"local" => local_only})