Merge pull request #923 from poanetwork/919

Log and retry import errors in uncle fetcher

apps/indexer/lib/indexer/block/uncle/fetcher.ex

@@ -82,18 +82,35 @@ defmodule Indexer.Block.Uncle.Fetcher do
         addresses_params =
           AddressExtraction.extract_addresses(%{blocks: blocks_params, transactions: transactions_params})
 
-        {:ok, _} =
+        case Block.Fetcher.import(block_fetcher, %{
-          Block.Fetcher.import(block_fetcher, %{
                addresses: %{params: addresses_params},
                blocks: %{params: blocks_params},
                block_second_degree_relations: %{params: block_second_degree_relations_params},
                transactions: %{params: transactions_params, on_conflict: :nothing}
-          })
+             }) do
-
+          {:ok, _} ->
             :ok
 
+          {:error, step, failed_value, _changes_so_far} ->
+            Logger.error(fn ->
+              [
+                "failed to import ",
+                unique_hashes |> length() |> to_string(),
+                "uncle blocks in step ",
+                inspect(step),
+                ": ",
+                inspect(failed_value)
+              ]
+            end)
+
+            {:retry, unique_hashes}
+        end
+
       {:error, reason} ->
-        Logger.debug(fn -> "failed to fetch #{length(unique_hashes)} uncle blocks, #{inspect(reason)}" end)
+        Logger.error(fn ->
+          ["failed to fetch ", unique_hashes |> length |> to_string(), " uncle blocks: ", inspect(reason)]
+        end)
+
         {:retry, unique_hashes}
     end
   end