Fixes

apps/indexer/lib/indexer/fetcher/token_instance.ex

@@ -51,9 +51,9 @@ defmodule Indexer.Fetcher.TokenInstance do
   end
 
   @impl BufferedTask
-  def run([%{contract_address_hash: hash, token_ids: token_ids}], _json_rpc_named_arguments) do
+  def run([%{contract_address_hash: hash, token_id: token_id}], _json_rpc_named_arguments) do
-    Enum.each(token_ids, &fetch_instance(hash, &1))
+    fetch_instance(hash, token_id)
-    update_current_token_balances(hash, token_ids)
+    update_current_token_balances(hash, token_id)
 
     :ok
   end
@@ -92,16 +92,17 @@ defmodule Indexer.Fetcher.TokenInstance do
     end
   end
 
-  defp update_current_token_balances(token_contract_address_hash, token_ids) do
+  defp update_current_token_balances(token_contract_address_hash, token_id) do
-    token_ids
+    token_id
-    |> Enum.map(&instance_owner_request(token_contract_address_hash, &1))
+    |> instance_owner_request(token_contract_address_hash)
+    |> List.wrap()
     |> InstanceOwnerReader.get_owner_of()
     |> Enum.map(&current_token_balances_import_params/1)
     |> all_import_params()
     |> Chain.import()
   end
 
-  defp instance_owner_request(token_contract_address_hash, token_id) do
+  defp instance_owner_request(token_id, token_contract_address_hash) do
     %{
       token_contract_address_hash: to_string(token_contract_address_hash),
       token_id: Decimal.to_integer(token_id)
@@ -157,11 +158,14 @@ defmodule Indexer.Fetcher.TokenInstance do
       token_transfers
       |> Enum.reject(fn token_transfer -> is_nil(token_transfer.token_ids) end)
       |> Enum.map(fn token_transfer ->
+        Enum.map(token_transfer.token_ids, fn token_id ->
           %{
             contract_address_hash: token_transfer.token_contract_address_hash,
-          token_ids: token_transfer.token_ids
+            token_id: token_id
           }
         end)
+      end)
+      |> List.flatten()
       |> Enum.uniq()
 
     BufferedTask.buffer(__MODULE__, data)

apps/indexer/lib/indexer/transform/address_token_balances.ex

@@ -11,30 +11,23 @@ defmodule Indexer.Transform.AddressTokenBalances do
 
   defp reducer({:token_transfers_params, token_transfers_params}, initial) when is_list(token_transfers_params) do
     token_transfers_params
-    |> ignore_burn_address_transfers_for_token_erc_721
+    |> ignore_burn_address_transfers_for_token_erc_721()
     |> Enum.reduce(initial, fn %{
                                  block_number: block_number,
                                  from_address_hash: from_address_hash,
                                  to_address_hash: to_address_hash,
                                  token_contract_address_hash: token_contract_address_hash,
-                                 token_id: token_id,
+                                 token_ids: token_ids,
                                  token_type: token_type
-                               } = params,
+                               },
                                acc
                                when is_integer(block_number) and is_binary(from_address_hash) and
                                       is_binary(to_address_hash) and is_binary(token_contract_address_hash) ->
-      if params[:token_ids] && token_type == "ERC-1155" do
+      Enum.reduce(token_ids || [nil], acc, fn id, sub_acc ->
-        params[:token_ids]
-        |> Enum.reduce(acc, fn id, sub_acc ->
         sub_acc
         |> add_token_balance_address(from_address_hash, token_contract_address_hash, id, token_type, block_number)
         |> add_token_balance_address(to_address_hash, token_contract_address_hash, id, token_type, block_number)
       end)
-      else
-        acc
-        |> add_token_balance_address(from_address_hash, token_contract_address_hash, token_id, token_type, block_number)
-        |> add_token_balance_address(to_address_hash, token_contract_address_hash, token_id, token_type, block_number)
-      end
     end)
   end
 

apps/indexer/test/indexer/fetcher/token_instance_test.exs

@@ -35,7 +35,7 @@ defmodule Indexer.Fetcher.TokenInstanceTest do
       end)
 
       TokenInstance.run(
-        [%{contract_address_hash: token_contract_address_hash, token_ids: [token_id]}],
+        [%{contract_address_hash: token_contract_address_hash, token_id: token_id}],
         nil
       )
 
@@ -70,7 +70,7 @@ defmodule Indexer.Fetcher.TokenInstanceTest do
       end)
 
       TokenInstance.run(
-        [%{contract_address_hash: token_contract_address_hash, token_ids: [token_id]}],
+        [%{contract_address_hash: token_contract_address_hash, token_id: token_id}],
         nil
       )
 

apps/indexer/test/indexer/transform/address_token_balances_test.exs

@@ -25,7 +25,7 @@ defmodule Indexer.Transform.AddressTokenBalancesTest do
         from_address_hash: from_address_hash,
         to_address_hash: to_address_hash,
         token_contract_address_hash: token_contract_address_hash,
-        token_id: nil,
+        token_ids: nil,
         token_type: "ERC-20"
       }
 
@@ -49,7 +49,7 @@ defmodule Indexer.Transform.AddressTokenBalancesTest do
         to_address_hash: to_address_hash,
         token_contract_address_hash: token_contract_address_hash,
         token_type: "ERC-721",
-        token_id: nil
+        token_ids: nil
       }
 
       params_set = AddressTokenBalances.params_set(%{token_transfers_params: [token_transfer_params]})