Merge branch 'meilisearch' into 'develop'

Different search backends, in particular meilisearch as an additional one

See merge request pleroma/pleroma!3529

1 files changed, 145 insertions, 0 deletions

diff --git a/lib/mix/tasks/pleroma/search/meilisearch.ex b/lib/mix/tasks/pleroma/search/meilisearch.ex
new file mode 100644
index 000000000..8379a0c25
--- /dev/null
+++ b/lib/mix/tasks/pleroma/search/meilisearch.ex
@@ -0,0 +1,145 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Mix.Tasks.Pleroma.Search.Meilisearch do
+  require Pleroma.Constants
+
+  import Mix.Pleroma
+  import Ecto.Query
+
+  import Pleroma.Search.Meilisearch,
+    only: [meili_post: 2, meili_put: 2, meili_get: 1, meili_delete: 1]
+
+  def run(["index"]) do
+    start_pleroma()
+    Pleroma.HTML.compile_scrubbers()
+
+    meili_version =
+      (
+        {:ok, result} = meili_get("/version")
+
+        result["pkgVersion"]
+      )
+
+    # The ranking rule syntax was changed but nothing about that is mentioned in the changelog
+    if not Version.match?(meili_version, ">= 0.25.0") do
+      raise "Meilisearch <0.24.0 not supported"
+    end
+
+    {:ok, _} =
+      meili_post(
+        "/indexes/objects/settings/ranking-rules",
+        [
+          "published:desc",
+          "words",
+          "exactness",
+          "proximity",
+          "typo",
+          "attribute",
+          "sort"
+        ]
+      )
+
+    {:ok, _} =
+      meili_post(
+        "/indexes/objects/settings/searchable-attributes",
+        [
+          "content"
+        ]
+      )
+
+    IO.puts("Created indices. Starting to insert posts.")
+
+    chunk_size = Pleroma.Config.get([Pleroma.Search.Meilisearch, :initial_indexing_chunk_size])
+
+    Pleroma.Repo.transaction(
+      fn ->
+        query =
+          from(Pleroma.Object,
+            # Only index public and unlisted posts which are notes and have some text
+            where:
+              fragment("data->>'type' = 'Note'") and
+                (fragment("data->'to' \\? ?", ^Pleroma.Constants.as_public()) or
+                   fragment("data->'cc' \\? ?", ^Pleroma.Constants.as_public())),
+            order_by: [desc: fragment("data->'published'")]
+          )
+
+        count = query |> Pleroma.Repo.aggregate(:count, :data)
+        IO.puts("Entries to index: #{count}")
+
+        Pleroma.Repo.stream(
+          query,
+          timeout: :infinity
+        )
+        |> Stream.map(&Pleroma.Search.Meilisearch.object_to_search_data/1)
+        |> Stream.filter(fn o -> not is_nil(o) end)
+        |> Stream.chunk_every(chunk_size)
+        |> Stream.transform(0, fn objects, acc ->
+          new_acc = acc + Enum.count(objects)
+
+          # Reset to the beginning of the line and rewrite it
+          IO.write("\r")
+          IO.write("Indexed #{new_acc} entries")
+
+          {[objects], new_acc}
+        end)
+        |> Stream.each(fn objects ->
+          result =
+            meili_put(
+              "/indexes/objects/documents",
+              objects
+            )
+
+          with {:ok, res} <- result do
+            if not Map.has_key?(res, "uid") do
+              IO.puts("\nFailed to index: #{inspect(result)}")
+            end
+          else
+            e -> IO.puts("\nFailed to index due to network error: #{inspect(e)}")
+          end
+        end)
+        |> Stream.run()
+      end,
+      timeout: :infinity
+    )
+
+    IO.write("\n")
+  end
+
+  def run(["clear"]) do
+    start_pleroma()
+
+    meili_delete("/indexes/objects/documents")
+  end
+
+  def run(["show-keys", master_key]) do
+    start_pleroma()
+
+    endpoint = Pleroma.Config.get([Pleroma.Search.Meilisearch, :url])
+
+    {:ok, result} =
+      Pleroma.HTTP.get(
+        Path.join(endpoint, "/keys"),
+        [{"Authorization", "Bearer #{master_key}"}]
+      )
+
+    decoded = Jason.decode!(result.body)
+
+    if decoded["results"] do
+      Enum.each(decoded["results"], fn %{"description" => desc, "key" => key} ->
+        IO.puts("#{desc}: #{key}")
+      end)
+    else
+      IO.puts("Error fetching the keys, check the master key is correct: #{inspect(decoded)}")
+    end
+  end
+
+  def run(["stats"]) do
+    start_pleroma()
+
+    {:ok, result} = meili_get("/indexes/objects/stats")
+    IO.puts("Number of entries: #{result["numberOfDocuments"]}")
+    IO.puts("Indexing? #{result["isIndexing"]}")
+  end
+end