Add support for PGroonga

config/benchmark.exs

@@ -71,8 +71,14 @@
 config :pleroma, :http_security, report_uri: "https://endpoint.com"
 
 rum_enabled = System.get_env("RUM_ENABLED") == "true"
-config :pleroma, :database, rum_enabled: rum_enabled
+pgroonga_enabled = System.get_env("PGROONGA_ENABLED") == "true"
+
+config :pleroma, :database,
+  rum_enabled: rum_enabled,
+  pgroonga_enabled: pgroonga_enabled
+
 IO.puts("RUM enabled: #{rum_enabled}")
+IO.puts("PGroonga enabled: #{pgroonga_enabled}")
 
 config :pleroma, Pleroma.ReverseProxy.Client, Pleroma.ReverseProxy.ClientMock
 

config/config.exs

@@ -689,7 +689,9 @@
   issue_new_refresh_token: true,
   clean_expired_tokens: false
 
-config :pleroma, :database, rum_enabled: false
+config :pleroma, :database,
+  rum_enabled: false,
+  pgroonga_enabled: false
 
 config :pleroma, :features, improved_hashtag_timeline: :auto
 

config/docker.exs

@@ -23,7 +23,10 @@
 # Configure web push notifications
 config :web_push_encryption, :vapid_details, subject: "mailto:#{System.get_env("NOTIFY_EMAIL")}"
 
-config :pleroma, :database, rum_enabled: false
+config :pleroma, :database,
+  rum_enabled: false,
+  pgroonga_enabled: false
+
 config :pleroma, :instance, static_dir: "/var/lib/akkoma/static"
 config :pleroma, Pleroma.Uploaders.Local, uploads: "/var/lib/akkoma/uploads"
 

config/test.exs

@@ -98,8 +98,14 @@
 config :pleroma, :http, send_user_agent: false
 
 rum_enabled = System.get_env("RUM_ENABLED") == "true"
-config :pleroma, :database, rum_enabled: rum_enabled
+pgroonga_enabled = System.get_env("PGROONGA_ENABLED") == "true"
+
+config :pleroma, :database,
+  rum_enabled: rum_enabled,
+  pgroonga_enabled: pgroonga_enabled
+
 IO.puts("RUM enabled: #{rum_enabled}")
+IO.puts("PGroonga enabled: #{pgroonga_enabled}")
 
 config :joken, default_signer: "yU8uHKq+yyAkZ11Hx//jcdacWc8yQ1bxAAGrplzB0Zwwjkp35v0RK9SO8WTPr6QZ"
 

docker-compose.yml

@@ -4,6 +4,7 @@ version: "3.7"
 services:
   db:
     image: postgres:14-alpine
+    # image: groonga/pgroonga:3.1.1-alpine-14 # Use this one if you want to use PGroonga
     restart: unless-stopped
     environment:
       POSTGRES_DB: akkoma

docs/docs/configuration/howto_database_config.md

@@ -54,6 +54,7 @@ The configuration of Akkoma (and Pleroma) has traditionally been managed with a
   * config :pleroma, Pleroma.Repo
   * config :pleroma, configurable\_from\_database
   * config :pleroma, :database, rum_enabled
+  * config :pleroma, :database, pgroonga_enabled
   * config :pleroma, :connections_pool
 
   Here is an example of a server config stripped down after migration:

lib/mix/tasks/pleroma/database.ex

@@ -326,15 +326,17 @@ def run(["set_text_search_config", tsconfig]) do
         "ALTER DATABASE #{db} SET default_text_search_config = '#{tsconfig}';"
       )
 
-    # non-exist config will not raise excpetion but only give >0 messages
+    # non-exist config will not raise exception but only give >0 messages
     if length(msg) > 0 do
       shell_info("Error: #{inspect(msg, pretty: true)}")
     else
       rum_enabled = Pleroma.Config.get([:database, :rum_enabled])
-      shell_info("Recreate index, RUM: #{rum_enabled}")
+      pgroonga_enabled = Pleroma.Config.get([:database, :pgroonga_enabled])
+      shell_info("Recreate index, RUM: #{rum_enabled}, PGroonga: #{pgroonga_enabled}")
 
       # Note SQL below needs to be kept up-to-date with latest GIN or RUM index definition in future
-      if rum_enabled do
+      cond do
+        rum_enabled ->
           Ecto.Adapters.SQL.query!(
             Pleroma.Repo,
             "CREATE OR REPLACE FUNCTION objects_fts_update() RETURNS trigger AS $$ BEGIN
@@ -348,7 +350,18 @@ def run(["set_text_search_config", tsconfig]) do
 
           shell_info("Refresh RUM index")
           Ecto.Adapters.SQL.query!(Pleroma.Repo, "UPDATE objects SET updated_at = NOW();")
-      else
+
+        pgroonga_enabled ->
+          Ecto.Adapters.SQL.query!(Pleroma.Repo, "DROP INDEX IF EXISTS object_content_pgroonga;")
+
+          Ecto.Adapters.SQL.query!(
+            Pleroma.Repo,
+            "CREATE INDEX object_content_pgroonga ON objects USING pgroonga ((data->'content')) WITH (tokenizer='TokenMecab');",
+            [],
+            timeout: :infinity
+          )
+
+        true ->
           Ecto.Adapters.SQL.query!(Pleroma.Repo, "DROP INDEX IF EXISTS objects_fts;")
 
           Ecto.Adapters.SQL.query!(

lib/mix/tasks/pleroma/instance.ex

@@ -28,6 +28,7 @@ def run(["gen" | rest]) do
           dbuser: :string,
           dbpass: :string,
           rum: :string,
+          pgroonga: :string,
           indexable: :string,
           db_configurable: :string,
           uploads_dir: :string,
@@ -127,6 +128,18 @@ def run(["gen" | rest]) do
           "n"
         ) === "y"
 
+      pgroonga_enabled =
+        if rum_enabled do
+          false
+        else
+          get_option(
+            options,
+            :pgroonga,
+            "Would you like to use PGroonga to index and search?",
+            "n"
+          ) === "y"
+        end
+
       listen_port =
         get_option(
           options,
@@ -225,6 +238,7 @@ def run(["gen" | rest]) do
           static_dir: static_dir,
           uploads_dir: uploads_dir,
           rum_enabled: rum_enabled,
+          pgroonga_enabled: pgroonga_enabled,
           listen_ip: listen_ip,
           listen_port: listen_port,
           upload_filters:

lib/pleroma/application_requirements.ex

@@ -24,6 +24,7 @@ def verify! do
     |> check_migrations_applied!()
     |> check_welcome_message_config!()
     |> check_rum!()
+    |> check_pgroonga!()
     |> check_repo_pool_size!()
     |> handle_result()
   end
@@ -162,6 +163,55 @@ defp do_check_rum!(setting, migrate) do
     end
   end
 
+  # Checks for settings of PGroonga.
+  #
+  defp check_pgroonga!(:ok) do
+    {_, res, _} =
+      Ecto.Migrator.with_repo(Pleroma.Repo, fn repo ->
+        # TODO: check migrate
+        migrate =
+          from(o in "pg_indexes",
+            where: o.indexname == "object_content_pgroonga"
+          )
+          |> repo.exists?()
+
+        setting = Pleroma.Config.get([:database, :pgroonga_enabled], false)
+
+        do_check_pgroonga!(setting, migrate)
+      end)
+
+    res
+  end
+
+  defp check_pgroonga!(result), do: result
+
+  defp do_check_pgroonga!(setting, migrate) do
+    case {setting, migrate} do
+      {true, false} ->
+        Logger.error(
+          "PGroonga is enabled, but no migrations have been applied for it.\n" <>
+            "If you want to start Akkoma without using PGroonga, set `config :pleroma, :database, pgroonga_enabled: false`.\n" <>
+            "Otherwise apply the following migrations:\n" <>
+            "`mix ecto.migrate --migrations-path priv/repo/optional_migrations/pgroonga/`"
+        )
+
+        {:error, "Unapplied PGroonga Migrations detected"}
+
+      {false, true} ->
+        Logger.error(
+          "Detected applied migrations to use PGroonga to search, but it is not enabled in the settings.\n" <>
+            "If you want to use PGroonga, set `config :pleroma, :database, pgroonga_enabled: true`.\n" <>
+            "Otherwise apply the following migrations:\n" <>
+            "`mix ecto.rollback --migrations-path priv/repo/optional_migrations/pgroonga/`"
+        )
+
+        {:error, "PGroonga Migrations detected"}
+
+      _ ->
+        :ok
+    end
+  end
+
   defp check_system_commands!(:ok) do
     filter_commands_statuses = [
       check_filter(Pleroma.Upload.Filter.Exiftool, "exiftool"),

lib/pleroma/search/database_search.ex

@@ -16,7 +16,13 @@ defmodule Pleroma.Search.DatabaseSearch do
   @behaviour Pleroma.Search.SearchBackend
 
   def search(user, search_query, options \\ []) do
-    index_type = if Pleroma.Config.get([:database, :rum_enabled]), do: :rum, else: :gin
+    index_type =
+      cond do
+        Pleroma.Config.get([:database, :rum_enabled]) -> :rum
+        Pleroma.Config.get([:database, :pgroonga_enabled]) -> :pgroonga
+        true -> :gin
+      end
+
     limit = Enum.min([Keyword.get(options, :limit), 40])
     offset = Keyword.get(options, :offset, 0)
     author = Keyword.get(options, :author)
@@ -132,6 +138,18 @@ defp query_with(q, :rum, search_query, :websearch) do
     )
   end
 
+  defp query_with(q, :pgroonga, search_query, _) do
+    # PGroonga only supports PostgreSQL version 11 or newer
+    from([a, o] in q,
+      where:
+        fragment(
+          "?->'content' &@~ ?",
+          o.data,
+          ^search_query
+        )
+    )
+  end
+
   def maybe_restrict_local(q, user) do
     limit = Pleroma.Config.get([:instance, :limit_to_local_content], :unauthenticated)
 

priv/repo/optional_migrations/pgroonga/20230802195431_create_pgroonga_index.exs

@@ -0,0 +1,29 @@
+defmodule Pleroma.Repo.Migrations.CreatePgroongaIndex do
+  use Ecto.Migration
+
+  def up do
+    execute("CREATE EXTENSION IF NOT EXISTS pgroonga")
+
+    drop_if_exists(
+      index(:objects, ["(to_tsvector('english', data->>'content'))"],
+        using: :gin,
+        name: :objects_fts
+      )
+    )
+
+    execute(
+      "CREATE INDEX object_content_pgroonga ON objects USING pgroonga ((data->'content')) WITH (tokenizer='TokenMecab')"
+    )
+  end
+
+  def down do
+    execute("DROP INDEX IF EXISTS object_content_pgroonga")
+
+    create_if_not_exists(
+      index(:objects, ["(to_tsvector('english', data->>'content'))"],
+        using: :gin,
+        name: :objects_fts
+      )
+    )
+  end
+end

priv/templates/sample_config.eex

@@ -41,7 +41,10 @@ config :web_push_encryption, :vapid_details,
   public_key: "<%= web_push_public_key %>",
   private_key: "<%= web_push_private_key %>"
 
-config :pleroma, :database, rum_enabled: <%= rum_enabled %>
+config :pleroma, :database,
+  rum_enabled: <%= rum_enabled %>,
+  pgroonga_enabled: <%= pgroonga_enabled %>
+
 config :pleroma, :instance, static_dir: "<%= static_dir %>"
 config :pleroma, Pleroma.Uploaders.Local, uploads: "<%= uploads_dir %>"
 

priv/templates/sample_psql.eex

@@ -10,3 +10,8 @@ CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
 else
 ""
 end %>
+<%= if pgroonga_enabled do
+  "CREATE EXTENSION IF NOT EXISTS pgroonga;"
+else
+""
+end %>