akkoma/lib/pleroma/search/meilisearch.ex

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defmodule Pleroma.Search.Meilisearch do
require Logger
require Pleroma.Constants
alias Pleroma.Activity
import Pleroma.Search.DatabaseSearch
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@behaviour Pleroma.Search.SearchBackend
defp meili_headers(key) do
key_header =
if is_nil(key), do: [], else: [{"Authorization", "Bearer #{key}"}]
[{"Content-Type", "application/json"} | key_header]
end
defp meili_headers_admin do
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private_key = Pleroma.Config.get([Pleroma.Search.Meilisearch, :private_key])
meili_headers(private_key)
end
defp meili_headers_search do
search_key =
Pleroma.Config.get([Pleroma.Search.Meilisearch, :search_key]) ||
Pleroma.Config.get([Pleroma.Search.Meilisearch, :private_key])
meili_headers(search_key)
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end
def meili_get(path) do
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endpoint = Pleroma.Config.get([Pleroma.Search.Meilisearch, :url])
result =
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Pleroma.HTTP.get(
Path.join(endpoint, path),
meili_headers_admin()
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)
with {:ok, res} <- result do
{:ok, Jason.decode!(res.body)}
end
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end
defp meili_search(params) do
endpoint = Pleroma.Config.get([Pleroma.Search.Meilisearch, :url])
result =
Pleroma.HTTP.post(
Path.join(endpoint, "/indexes/objects/search"),
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Jason.encode!(params),
meili_headers_search()
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)
with {:ok, res} <- result do
{:ok, Jason.decode!(res.body)}
end
end
def meili_put(path, params) do
endpoint = Pleroma.Config.get([Pleroma.Search.Meilisearch, :url])
result =
Pleroma.HTTP.request(
:put,
Path.join(endpoint, path),
Jason.encode!(params),
meili_headers_admin(),
[]
)
with {:ok, res} <- result do
{:ok, Jason.decode!(res.body)}
end
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end
def meili_delete!(path) do
endpoint = Pleroma.Config.get([Pleroma.Search.Meilisearch, :url])
{:ok, _} =
Pleroma.HTTP.request(
:delete,
Path.join(endpoint, path),
"",
meili_headers_admin(),
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[]
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)
end
def search(user, query, options \\ []) do
limit = Enum.min([Keyword.get(options, :limit), 40])
offset = Keyword.get(options, :offset, 0)
author = Keyword.get(options, :author)
res =
meili_search(%{q: query, offset: offset, limit: limit})
with {:ok, result} <- res do
hits = result["hits"] |> Enum.map(& &1["ap"])
try do
hits
|> Activity.get_presorted_create_by_object_ap_id()
|> Activity.with_preloaded_object()
|> Activity.restrict_deactivated_users()
|> maybe_restrict_local(user)
|> maybe_restrict_author(author)
|> maybe_restrict_blocked(user)
|> maybe_fetch(user, query)
|> Pleroma.Repo.all()
rescue
_ -> maybe_fetch([], user, query)
end
end
end
def object_to_search_data(object) do
# Only index public or unlisted Notes
if not is_nil(object) and object.data["type"] == "Note" and
not is_nil(object.data["content"]) and
(Pleroma.Constants.as_public() in object.data["to"] or
Pleroma.Constants.as_public() in object.data["cc"]) and
String.length(object.data["content"]) > 1 do
data = object.data
content_str =
case data["content"] do
[nil | rest] -> to_string(rest)
str -> str
end
content =
with {:ok, scrubbed} <- FastSanitize.strip_tags(content_str),
trimmed <- String.trim(scrubbed) do
trimmed
end
if String.length(content) > 1 and not is_nil(data["published"]) do
{:ok, published, _} = DateTime.from_iso8601(data["published"])
%{
id: object.id,
content: content,
ap: data["id"],
published: published |> DateTime.to_unix()
}
end
end
end
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@impl true
def add_to_index(activity) do
maybe_search_data = object_to_search_data(activity.object)
if activity.data["type"] == "Create" and maybe_search_data do
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result =
meili_put(
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"/indexes/objects/documents",
[maybe_search_data]
)
with {:ok, res} <- result,
true <- Map.has_key?(res, "taskUid") do
{:ok, res}
else
err ->
Logger.error("Failed to add activity #{activity.id} to index: #{inspect(result)}")
{:error, err}
end
end
end
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@impl true
def remove_from_index(object) do
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meili_delete!("/indexes/objects/documents/#{object.id}")
end
end