Partial retries for fetch_blocks_by_range

Means that both Block.Fetchers, realtime and catchup, now handle
fetch errors.  The Block.Catchup.Fetcher will retry those blocks that
failed to fetch while importing the rest that did fetch instead of
refetching the whole batch.

apps/ethereum_jsonrpc/lib/ethereum_jsonrpc.ex

@@ -26,14 +26,13 @@ defmodule EthereumJSONRPC do
   """
 
   alias EthereumJSONRPC.{
+    Block,
     Blocks,
     FetchedBalances,
     Receipts,
     RequestCoordinator,
     Subscription,
-    Transactions,
     Transport,
-    Uncles,
     Variant
   }
 
@@ -87,11 +86,6 @@ defmodule EthereumJSONRPC do
           {:transport, Transport.t()} | {:transport_options, Transport.options()} | {:variant, Variant.t()}
         ]
 
-  @typedoc """
-  If there are more blocks.
-  """
-  @type next :: :end_of_chain | :more
-
   @typedoc """
   8 byte [KECCAK-256](https://en.wikipedia.org/wiki/SHA-3) hash of the proof-of-work.
   """
@@ -214,41 +208,21 @@ defmodule EthereumJSONRPC do
 
   Transaction data is included for each block.
   """
+  @spec fetch_blocks_by_hash([hash()], json_rpc_named_arguments) :: {:ok, Blocks.t()} | {:error, reason :: term}
   def fetch_blocks_by_hash(block_hashes, json_rpc_named_arguments) do
-    id_to_params =
     block_hashes
     |> Enum.map(fn block_hash -> %{hash: block_hash} end)
-      |> id_to_params()
+    |> fetch_blocks_by_params(&Block.ByHash.request/1, json_rpc_named_arguments)
-
-    with {:ok, responses} <-
-           id_to_params
-           |> Blocks.ByHash.requests()
-           |> json_rpc(json_rpc_named_arguments) do
-      {:ok, Blocks.from_responses(responses, id_to_params)}
-    end
   end
 
   @doc """
   Fetches blocks by block number range.
   """
-  @spec fetch_blocks_by_range(Range.t(), json_rpc_named_arguments) ::
+  @spec fetch_blocks_by_range(Range.t(), json_rpc_named_arguments) :: {:ok, Blocks.t()} | {:error, reason :: term}
-          {:ok, next,
-           %{
-             blocks: Blocks.params(),
-             block_second_degree_relations: Uncles.params(),
-             transactions: Transactions.params()
-           }}
-          | {:error, [reason :: term, ...]}
   def fetch_blocks_by_range(_first.._last = range, json_rpc_named_arguments) do
-    id_to_params =
     range
     |> Enum.map(fn number -> %{number: number} end)
-      |> id_to_params()
+    |> fetch_blocks_by_params(&Block.ByNumber.request/1, json_rpc_named_arguments)
-
-    id_to_params
-    |> get_block_by_number_requests()
-    |> json_rpc(json_rpc_named_arguments)
-    |> handle_get_blocks(id_to_params)
   end
 
   @doc """
@@ -409,10 +383,16 @@ defmodule EthereumJSONRPC do
     |> Timex.from_unix()
   end
 
-  defp get_block_by_number_requests(id_to_params) do
+  defp fetch_blocks_by_params(params, request, json_rpc_named_arguments)
-    Enum.map(id_to_params, fn {id, %{number: number}} ->
+       when is_list(params) and is_function(request, 1) do
-      get_block_by_number_request(%{id: id, quantity: number, transactions: :full})
+    id_to_params = id_to_params(params)
-    end)
+
+    with {:ok, responses} <-
+           id_to_params
+           |> Blocks.requests(request)
+           |> json_rpc(json_rpc_named_arguments) do
+      {:ok, Blocks.from_responses(responses, id_to_params)}
+    end
   end
 
   defp get_block_by_number_request(%{id: id} = options) do
@@ -445,46 +425,6 @@ defmodule EthereumJSONRPC do
     end
   end
 
-  defp handle_get_blocks({:ok, results}, id_to_params) when is_list(results) do
-    with {:ok, next, blocks} <- reduce_results(results, id_to_params) do
-      elixir_blocks = Blocks.to_elixir(blocks)
-
-      elixir_uncles = Blocks.elixir_to_uncles(elixir_blocks)
-      elixir_transactions = Blocks.elixir_to_transactions(elixir_blocks)
-
-      block_second_degree_relations_params = Uncles.elixir_to_params(elixir_uncles)
-      transactions_params = Transactions.elixir_to_params(elixir_transactions)
-      blocks_params = Blocks.elixir_to_params(elixir_blocks)
-
-      {:ok, next,
-       %{
-         blocks: blocks_params,
-         block_second_degree_relations: block_second_degree_relations_params,
-         transactions: transactions_params
-       }}
-    end
-  end
-
-  defp handle_get_blocks({:error, _} = error, _id_to_params), do: error
-
-  defp reduce_results(results, id_to_params) do
-    Enum.reduce(results, {:ok, :more, []}, &reduce_result(&1, &2, id_to_params))
-  end
-
-  defp reduce_result(%{result: nil}, {:ok, _, blocks}, _id_to_params), do: {:ok, :end_of_chain, blocks}
-  defp reduce_result(%{result: %{} = block}, {:ok, next, blocks}, _id_to_params), do: {:ok, next, [block | blocks]}
-  defp reduce_result(%{result: _}, {:error, _} = error, _id_to_params), do: error
-
-  defp reduce_result(%{error: reason, id: id}, acc, id_to_params) do
-    data = Map.fetch!(id_to_params, id)
-    annotated_reason = Map.put(reason, :data, data)
-
-    case acc do
-      {:ok, _, _} -> {:error, [annotated_reason]}
-      {:error, reasons} -> {:error, [annotated_reason | reasons]}
-    end
-  end
-
   defp handle_get_block_by_tag({:ok, %{"number" => nil}}), do: {:error, :not_found}
 
   defp handle_get_block_by_tag({:ok, %{"number" => quantity}}) when is_binary(quantity) do

apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/block.ex

@@ -68,17 +68,21 @@ defmodule EthereumJSONRPC.Block do
   """
   @type t :: %{String.t() => EthereumJSONRPC.data() | EthereumJSONRPC.hash() | EthereumJSONRPC.quantity() | nil}
 
-  def from_response(%{id: id, result: %{"hash" => hash} = block}, id_to_params) when is_map(id_to_params) do
+  def from_response(%{id: id, result: nil}, id_to_params) when is_map(id_to_params) do
-    # `^` verifies returned hash matches sent hash
+    params = Map.fetch!(id_to_params, id)
-    %{hash: ^hash} = Map.fetch!(id_to_params, id)
+
+    {:error, %{code: 404, message: "Not Found", data: params}}
+  end
+
+  def from_response(%{id: id, result: block}, id_to_params) when is_map(id_to_params) do
+    true = Map.has_key?(id_to_params, id)
 
     {:ok, block}
   end
 
   def from_response(%{id: id, error: error}, id_to_params) when is_map(id_to_params) do
-    %{hash: hash} = Map.fetch!(id_to_params, id)
+    params = Map.fetch!(id_to_params, id)
-
+    annotated_error = Map.put(error, :data, params)
-    annotated_error = Map.put(error, :data, %{hash: hash})
 
     {:error, annotated_error}
   end

apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/block/by_number.ex

@@ -0,0 +1,11 @@
+defmodule EthereumJSONRPC.Block.ByNumber do
+  @moduledoc """
+  Block format as returned by [`eth_getBlockByNumber`](https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getblockbyhash)
+  """
+
+  import EthereumJSONRPC, only: [integer_to_quantity: 1]
+
+  def request(%{id: id, number: number}) do
+    EthereumJSONRPC.request(%{id: id, method: "eth_getBlockByNumber", params: [integer_to_quantity(number), true]})
+  end
+end

apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/blocks.ex

@@ -20,6 +20,14 @@ defmodule EthereumJSONRPC.Blocks do
             transactions_params: [],
             errors: []
 
+  def requests(id_to_params, request) when is_map(id_to_params) and is_function(request, 1) do
+    Enum.map(id_to_params, fn {id, params} ->
+      params
+      |> Map.put(:id, id)
+      |> request.()
+    end)
+  end
+
   @spec from_responses(list(), map()) :: t()
   def from_responses(responses, id_to_params) when is_list(responses) and is_map(id_to_params) do
     %{errors: errors, blocks: blocks} =

apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/blocks/by_hash.ex

@@ -1,14 +0,0 @@
-defmodule EthereumJSONRPC.Blocks.ByHash do
-  @moduledoc """
-  Blocks format as returned by [`eth_getBlockByHash`](https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_getblockbyhash)
-  from batch requests.
-  """
-
-  alias EthereumJSONRPC.Block
-
-  def requests(id_to_params) when is_map(id_to_params) do
-    Enum.map(id_to_params, fn {id, %{hash: hash}} ->
-      Block.ByHash.request(%{id: id, hash: hash})
-    end)
-  end
-end

apps/ethereum_jsonrpc/test/ethereum_jsonrpc_test.exs

@@ -329,15 +329,29 @@ defmodule EthereumJSONRPCTest do
         end)
       end
 
-      assert {:error,
+      assert {:ok,
-              [%{data: %{number: 1_000_000_000_000_000_000_001}}, %{data: %{number: 1_000_000_000_000_000_000_000}}]} =
+              %EthereumJSONRPC.Blocks{
+                block_second_degree_relations_params: [],
+                blocks_params: [],
+                errors: [
+                  %{
+                    data: %{number: 1_000_000_000_000_000_000_001}
+                  },
+                  %{
+                    data: %{number: 1_000_000_000_000_000_000_000}
+                  }
+                ],
+                transactions_params: []
+              }} =
                EthereumJSONRPC.fetch_blocks_by_range(
                  1_000_000_000_000_000_000_000..1_000_000_000_000_000_000_001,
                  json_rpc_named_arguments
                )
     end
 
-    test "returns only errors if a mix of results and errors", %{json_rpc_named_arguments: json_rpc_named_arguments} do
+    test "returns only errors and results if a mix of results and errors", %{
+      json_rpc_named_arguments: json_rpc_named_arguments
+    } do
       # Can't be faked reliably on real chain
       moxed_json_rpc_named_arguments = Keyword.put(json_rpc_named_arguments, :transport, EthereumJSONRPC.Mox)
 
@@ -356,30 +370,71 @@ defmodule EthereumJSONRPCTest do
              id: 1,
              result: %{
                "difficulty" => "0x0",
+               "extraData" => "0x",
                "gasLimit" => "0x0",
                "gasUsed" => "0x0",
                "hash" => "0x0",
+               "logsBloom" => "0x",
                "miner" => "0x0",
                "number" => "0x0",
                "parentHash" => "0x0",
+               "receiptsRoot" => "0x0",
+               "sha3Uncles" => "0x0",
                "size" => "0x0",
+               "stateRoot" => "0x0",
                "timestamp" => "0x0",
                "totalDifficulty" => "0x0",
-               "transactions" => []
+               "transactions" => [],
+               "transactionsRoot" => [],
+               "uncles" => []
              },
              jsonrpc: "2.0"
            }
          ]}
       end)
 
-      assert {:error, [%{data: %{number: 1_000_000_000_000_000_000_000}}]} =
+      assert {:ok,
+              %EthereumJSONRPC.Blocks{
+                block_second_degree_relations_params: [],
+                blocks_params: [
+                  %{
+                    difficulty: 0,
+                    extra_data: "0x",
+                    gas_limit: 0,
+                    gas_used: 0,
+                    hash: "0x0",
+                    logs_bloom: "0x",
+                    miner_hash: "0x0",
+                    mix_hash: "0x0",
+                    nonce: 0,
+                    number: 0,
+                    parent_hash: "0x0",
+                    receipts_root: "0x0",
+                    sha3_uncles: "0x0",
+                    size: 0,
+                    state_root: "0x0",
+                    timestamp: _,
+                    total_difficulty: 0,
+                    transactions_root: [],
+                    uncles: []
+                  }
+                ],
+                errors: [
+                  %{
+                    code: -32602,
+                    data: %{number: 1_000_000_000_000_000_000_000},
+                    message: "Invalid params: Invalid block number: number too large to fit in target type."
+                  }
+                ],
+                transactions_params: []
+              }} =
                EthereumJSONRPC.fetch_blocks_by_range(
                  1_000_000_000_000_000_000_000..1_000_000_000_000_000_000_001,
                  moxed_json_rpc_named_arguments
                )
     end
 
-    test "nil result indicated end-of-chain", %{json_rpc_named_arguments: json_rpc_named_arguments} do
+    test "nil result indicated error code 404", %{json_rpc_named_arguments: json_rpc_named_arguments} do
       # Can't be faked reliably on real chain
       moxed_json_rpc_named_arguments = Keyword.put(json_rpc_named_arguments, :transport, EthereumJSONRPC.Mox)
 
@@ -418,8 +473,13 @@ defmodule EthereumJSONRPCTest do
          ]}
       end)
 
-      assert {:ok, :end_of_chain, %{blocks: [_], transactions: []}} =
+      assert {:ok,
-               EthereumJSONRPC.fetch_blocks_by_range(0..1, moxed_json_rpc_named_arguments)
+              %EthereumJSONRPC.Blocks{
+                block_second_degree_relations_params: [],
+                blocks_params: [%{}],
+                errors: [%{code: 404, data: %{number: 1}, message: "Not Found"}],
+                transactions_params: []
+              }} = EthereumJSONRPC.fetch_blocks_by_range(0..1, moxed_json_rpc_named_arguments)
     end
   end
 

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

@@ -166,9 +166,11 @@ defmodule Indexer.Block.Catchup.Fetcher do
          sequence
        ) do
     case fetch_and_import_range(block_fetcher, range) do
-      {:ok, {inserted, next}} ->
+      {:ok, %{inserted: inserted, errors: errors}} ->
-        cap_seq(sequence, next, range)
+        errors = cap_seq(sequence, errors, range)
-        {:ok, inserted}
+        retry(sequence, errors)
+
+        {:ok, inserted: inserted}
 
       {:error, {step, reason}} = error ->
         Logger.error(fn ->
@@ -200,19 +202,27 @@ defmodule Indexer.Block.Catchup.Fetcher do
     end
   end
 
-  defp cap_seq(seq, next, range) do
+  defp cap_seq(seq, errors, range) do
-    case next do
+    {not_founds, other_errors} =
-      :more ->
+      Enum.split_with(errors, fn
+        %{code: 404, data: %{number: _}} -> true
+        _ -> false
+      end)
+
+    case not_founds do
+      [] ->
         Logger.debug(fn ->
           first_block_number..last_block_number = range
           "got blocks #{first_block_number} - #{last_block_number}"
         end)
 
-      :end_of_chain ->
+        other_errors
+
+      _ ->
         Sequence.cap(seq)
     end
 
-    :ok
+    other_errors
   end
 
   defp push_back(sequence, range) do
@@ -222,6 +232,41 @@ defmodule Indexer.Block.Catchup.Fetcher do
     end
   end
 
+  defp retry(sequence, errors) when is_list(errors) do
+    errors
+    |> errors_to_ranges()
+    |> Enum.map(&push_back(sequence, &1))
+  end
+
+  defp errors_to_ranges(errors) when is_list(errors) do
+    errors
+    |> Enum.flat_map(&error_to_numbers/1)
+    |> numbers_to_ranges()
+  end
+
+  defp error_to_numbers(%{data: %{number: number}}) when is_integer(number), do: [number]
+
+  defp numbers_to_ranges([]), do: []
+
+  defp numbers_to_ranges(numbers) when is_list(numbers) do
+    numbers
+    |> Enum.sort()
+    |> Enum.chunk_while(
+      nil,
+      fn
+        number, nil ->
+          {:cont, number..number}
+
+        number, first..last when number == last + 1 ->
+          {:cont, first..number}
+
+        number, range ->
+          {:cont, range, number..number}
+      end,
+      fn range -> {:cont, range} end
+    )
+  end
+
   defp put_memory_monitor(sequence_options, %__MODULE__{memory_monitor: nil}) when is_list(sequence_options),
     do: sequence_options
 

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

@@ -5,7 +5,7 @@ defmodule Indexer.Block.Fetcher do
 
   require Logger
 
-  alias EthereumJSONRPC.FetchedBeneficiaries
+  alias EthereumJSONRPC.{Blocks, FetchedBeneficiaries}
   alias Explorer.Chain.{Address, Block, Import}
   alias Indexer.{AddressExtraction, CoinBalance, MintTransfer, Token, TokenTransfers}
   alias Indexer.Address.{CoinBalances, TokenBalances}
@@ -77,7 +77,7 @@ defmodule Indexer.Block.Fetcher do
   end
 
   @spec fetch_and_import_range(t, Range.t()) ::
-          {:ok, {inserted :: %{}, next :: :more | :end_of_chain}}
+          {:ok, %{inserted: %{}, errors: [EthereumJSONRPC.Transport.error()]}}
           | {:error,
              {step :: atom(), reason :: term()}
              | [%Ecto.Changeset{}]
@@ -91,20 +91,22 @@ defmodule Indexer.Block.Fetcher do
         _.._ = range
       )
       when callback_module != nil do
-    with {:blocks, {:ok, next, result}} <-
+    with {:blocks,
-           {:blocks, EthereumJSONRPC.fetch_blocks_by_range(range, json_rpc_named_arguments)},
+          {:ok,
-         %{
+           %Blocks{
-           blocks: blocks,
+             blocks_params: blocks_params,
-           transactions: transactions_without_receipts,
+             transactions_params: transactions_params_without_receipts,
-           block_second_degree_relations: block_second_degree_relations
+             block_second_degree_relations_params: block_second_degree_relations_params,
-         } = result,
+             errors: blocks_errors
-         blocks = Transform.transform_blocks(blocks),
+           }}} <- {:blocks, EthereumJSONRPC.fetch_blocks_by_range(range, json_rpc_named_arguments)},
-         {:receipts, {:ok, receipt_params}} <- {:receipts, Receipts.fetch(state, transactions_without_receipts)},
+         blocks = Transform.transform_blocks(blocks_params),
+         {:receipts, {:ok, receipt_params}} <- {:receipts, Receipts.fetch(state, transactions_params_without_receipts)},
          %{logs: logs, receipts: receipts} = receipt_params,
-         transactions_with_receipts = Receipts.put(transactions_without_receipts, receipts),
+         transactions_with_receipts = Receipts.put(transactions_params_without_receipts, receipts),
          %{token_transfers: token_transfers, tokens: tokens} = TokenTransfers.parse(logs),
          %{mint_transfers: mint_transfers} = MintTransfer.parse(logs),
-         {:beneficiaries, {:ok, %FetchedBeneficiaries{params_set: beneficiary_params_set}}} <-
+         {:beneficiaries,
+          {:ok, %FetchedBeneficiaries{params_set: beneficiary_params_set, errors: beneficiaries_errors}}} <-
            fetch_beneficiaries(range, json_rpc_named_arguments),
          addresses =
            AddressExtraction.extract_addresses(%{
@@ -132,16 +134,15 @@ defmodule Indexer.Block.Fetcher do
                address_coin_balances: %{params: coin_balances_params_set},
                address_token_balances: %{params: address_token_balances},
                blocks: %{params: blocks},
-               block_second_degree_relations: %{params: block_second_degree_relations},
+               block_second_degree_relations: %{params: block_second_degree_relations_params},
                logs: %{params: logs},
                token_transfers: %{params: token_transfers},
                tokens: %{on_conflict: :nothing, params: tokens},
                transactions: %{params: transactions_with_receipts}
              }
            ) do
-      {:ok, {inserted, next}}
+      {:ok, %{inserted: inserted, errors: blocks_errors ++ beneficiaries_errors}}
     else
-      {:beneficiaries = step, {:ok, %FetchedBeneficiaries{errors: [_ | _] = errors}}} -> {:error, {step, errors}}
       {step, {:error, reason}} -> {:error, {step, reason}}
       {:error, :timeout} = error -> error
       {:error, changesets} = error when is_list(changesets) -> error

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

@@ -127,11 +127,22 @@ defmodule Indexer.Block.Realtime.Fetcher do
 
   def fetch_and_import_block(block_number_to_fetch, block_fetcher, retry \\ 3) do
     case fetch_and_import_range(block_fetcher, block_number_to_fetch..block_number_to_fetch) do
-      {:ok, {_inserted, _next}} ->
+      {:ok, %{inserted: _, errors: []}} ->
         Logger.debug(fn ->
           ["realtime indexer fetched and imported block ", to_string(block_number_to_fetch)]
         end)
 
+      {:ok, %{inserted: _, errors: [_ | _] = errors}} ->
+        Logger.error(fn ->
+          [
+            "realtime indexer failed to fetch block",
+            to_string(block_number_to_fetch),
+            ": ",
+            inspect(errors),
+            ".  Block will be retried by catchup indexer."
+          ]
+        end)
+
       {:error, {step, reason}} ->
         Logger.error(fn ->
           [

apps/indexer/test/indexer/block/catchup/bound_interval_supervisor_test.exs

@@ -22,6 +22,8 @@ defmodule Indexer.Block.Catchup.BoundIntervalSupervisorTest do
     # See https://github.com/poanetwork/blockscout/issues/597
     @tag :no_geth
     test "starts fetching blocks from latest and goes down", %{json_rpc_named_arguments: json_rpc_named_arguments} do
+      Logger.configure(truncate: :infinity)
+
       if json_rpc_named_arguments[:transport] == EthereumJSONRPC.Mox do
         case Keyword.fetch!(json_rpc_named_arguments, :variant) do
           EthereumJSONRPC.Parity ->

apps/indexer/test/indexer/block/fetcher_test.exs

@@ -214,10 +214,13 @@ defmodule Indexer.Block.FetcherTest do
         fn -> Fetcher.fetch_and_import_range(block_fetcher, block_number..block_number) end,
         fn result ->
           assert {:ok,
-                  {%{
+                  %{
+                    inserted: %{
                       addresses: [%Address{hash: ^address_hash}],
                       blocks: [%Chain.Block{hash: ^block_hash}]
-                   }, :more}} = result
+                    },
+                    errors: []
+                  }} = result
 
           wait_for_tasks(InternalTransaction.Fetcher)
           wait_for_tasks(CoinBalance.Fetcher)
@@ -506,15 +509,16 @@ defmodule Indexer.Block.FetcherTest do
 
         EthereumJSONRPC.Parity ->
           assert {:ok,
-                  {%{
+                  %{
+                    inserted: %{
                       addresses: [
                         %Address{
                           hash:
                             %Explorer.Chain.Hash{
                               byte_count: 20,
                               bytes:
-                               <<139, 243, 141, 71, 100, 146, 144, 100, 242, 212, 211, 165, 101, 32, 167, 106, 179, 223,
+                                <<139, 243, 141, 71, 100, 146, 144, 100, 242, 212, 211, 165, 101, 32, 167, 106, 179,
-                                 65, 91>>
+                                  223, 65, 91>>
                             } = first_address_hash
                         },
                         %Address{
@@ -556,7 +560,9 @@ defmodule Indexer.Block.FetcherTest do
                               57, 101, 36, 140, 57, 254, 153, 47, 255, 212, 51, 229>>
                         }
                       ]
-                   }, :more}} = Fetcher.fetch_and_import_range(block_fetcher, block_number..block_number)
+                    },
+                    errors: []
+                  }} = Fetcher.fetch_and_import_range(block_fetcher, block_number..block_number)
 
           wait_for_tasks(InternalTransaction.Fetcher)
           wait_for_tasks(CoinBalance.Fetcher)

apps/indexer/test/indexer/block/realtime/fetcher_test.exs

@@ -370,7 +370,8 @@ defmodule Indexer.Block.Realtime.FetcherTest do
       end
 
       assert {:ok,
-              {%{
+              %{
+                inserted: %{
                   addresses: [
                     %Address{hash: first_address_hash, fetched_coin_balance_block_number: 3_946_079},
                     %Address{hash: second_address_hash, fetched_coin_balance_block_number: 3_946_079},
@@ -410,7 +411,9 @@ defmodule Indexer.Block.Realtime.FetcherTest do
                     %{index: 5, transaction_hash: transaction_hash}
                   ],
                   transactions: [transaction_hash]
-               }, :more}} = Indexer.Block.Fetcher.fetch_and_import_range(block_fetcher, 3_946_079..3_946_080)
+                },
+                errors: []
+              }} = Indexer.Block.Fetcher.fetch_and_import_range(block_fetcher, 3_946_079..3_946_080)
     end
   end
 end