Update the sync task for Author to link the record with the server.

lib/decentralised_book_index/metadata/author.ex

@@ -63,9 +63,12 @@ defmodule DecentralisedBookIndex.Metadata.Author do
     end
 
     create :sync do
-      accept [:id, :name, :description, :author_alias_registry_id]
+      accept [:id, :name, :description, :dbi_server_id, :author_alias_registry_id]
 
       change fn changeset, _ ->
+        server_id = Ash.Changeset.get_attribute(changeset, :dbi_server)
+        Ash.Changeset.force_change_attribute(changeset, :author_alias_registry_id, server_id)
+
         registry_id = Ash.Changeset.get_attribute(changeset, :author_alias_registry_id)
 
         if registry_id == nil do

lib/decentralised_book_index/sync/sync/author_sync.ex

@@ -1,7 +1,7 @@
 defmodule DecentralisedBookIndex.Sync.AuthorSync do
   alias DecentralisedBookIndex.Metadata.Author
 
-  def create_update(author_attrs) do
+  def create_update(author_attrs, server_id) do
     case DecentralisedBookIndex.Metadata.get_author_by_id(author_attrs.id) do
       {:ok, author} ->
         author_attrs =
@@ -15,6 +15,10 @@ defmodule DecentralisedBookIndex.Sync.AuthorSync do
 
         :ok
       {:error, %Ash.Error.Query.NotFound{}} ->
+        author_attrs =
+          author_attrs
+          |> Map.put(:dbi_server_id, server_id)
+
         DecentralisedBookIndex.Metadata.Author
         |> Ash.Changeset.for_create(:sync, author_attrs)
         |> Ash.create!()

lib/decentralised_book_index/sync/sync_tasks/sync_authors_task.ex

@@ -3,16 +3,19 @@ defmodule DecentralisedBookIndex.SyncTasks.SyncAuthorsTask do
   alias DecentralisedBookIndex.Sync.DataTransformers.AuthorTransformer
   alias DecentralisedBookIndex.Sync.AuthorSync
 
-  def sync(endpoint) do
-    url = "#{endpoint}/api/v1/json/author"
-    FetchJsons.get(url, &sync_author_chunk/1)
-    endpoint
+  alias DecentralisedBookIndex.Metadata.DBIServer
+
+  def sync(%DBIServer{} = server) do
+    url = "#{server.url}/api/v1/json/author"
+    FetchJsons.get(url, sync_author_closure(server))
+
+    server
   end
 
-  def sync_author_chunk(json_chunk) do
+  def sync_author_chunk(json_chunk, server_id) do
     for json <- json_chunk do
       with {:ok, attrs} <- AuthorTransformer.from_json(json),
-           :ok <- AuthorSync.create_update(attrs) do
+           :ok <- AuthorSync.create_update(attrs, server_id) do
         :ok
       else
         {:error, reason} ->
@@ -22,4 +25,10 @@ defmodule DecentralisedBookIndex.SyncTasks.SyncAuthorsTask do
 
     []
   end
+
+  def sync_author_closure(server) do
+    fn json_chunk ->
+      sync_author_chunk(json_chunk, server.id)
+    end
+  end
 end