Merge pull request #6721 from blockscout/mf-implement-fetching-internal-txs-using-call-tracer

Implement fetching internal transactions from callTracer
2 years ago · ce787a24f5
parent acce06a9b2 e7ae2d421c
commit ce787a24f5
6 changed files with 435 additions and 2 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -4,6 +4,7 @@

 ### Features

+- [#6721](https://github.com/blockscout/blockscout/pull/6721) - Implement fetching internal transactions from callTracer
 - [#6712](https://github.com/blockscout/blockscout/pull/6712) - API v2 update

 ### Fixes
--- a/apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/geth.ex
+++ b/apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/geth.ex
@ -73,10 +73,16 @@ defmodule EthereumJSONRPC.Geth do
    debug_trace_transaction_timeout =
      Application.get_env(:ethereum_jsonrpc, __MODULE__)[:debug_trace_transaction_timeout]

+    tracer =
+      case Application.get_env(:ethereum_jsonrpc, __MODULE__)[:tracer] do
+        "js" -> @tracer
+        "call_tracer" -> "callTracer"
+      end
+
    request(%{
      id: id,
      method: "debug_traceTransaction",
-      params: [hash_data, %{tracer: @tracer, timeout: debug_trace_transaction_timeout}]
+      params: [hash_data, %{tracer: tracer, timeout: debug_trace_transaction_timeout}]
    })
  end

@ -169,6 +175,7 @@ defmodule EthereumJSONRPC.Geth do

    internal_transaction_params =
      calls
+      |> prepare_calls()
      |> Stream.with_index()
      |> Enum.map(fn {trace, index} ->
        Map.merge(trace, %{
@ -215,6 +222,65 @@ defmodule EthereumJSONRPC.Geth do
    {:error, annotated_error}
  end

+  defp prepare_calls(calls) do
+    case Application.get_env(:ethereum_jsonrpc, __MODULE__)[:tracer] do
+      "call_tracer" -> {calls, 0} |> parse_call_tracer_calls([], [], false) |> Enum.reverse()
+      "js" -> calls
+    end
+  end
+
+  defp parse_call_tracer_calls(calls, acc, trace_address, inner? \\ true)
+  defp parse_call_tracer_calls([], acc, _trace_address, _inner?), do: acc
+  defp parse_call_tracer_calls({%{"type" => 0}, _}, acc, _trace_address, _inner?), do: acc
+
+  defp parse_call_tracer_calls(
+         {%{"type" => type, "from" => from} = call, index},
+         acc,
+         trace_address,
+         inner?
+       ) do
+    new_trace_address = [index | trace_address]
+
+    formatted_call =
+      %{
+        "type" => if(type in ~w(CALL CALLCODE DELEGATECALL STATICCALL), do: "call", else: String.downcase(type)),
+        "callType" => String.downcase(type),
+        "from" => from,
+        "to" => Map.get(call, "to", "0x"),
+        "createdContractAddressHash" => Map.get(call, "to", "0x"),
+        "value" => Map.get(call, "value", "0x0"),
+        "gas" => Map.get(call, "gas", "0x0"),
+        "gasUsed" => Map.get(call, "gasUsed", "0x0"),
+        "input" => Map.get(call, "input", "0x"),
+        "init" => Map.get(call, "input", "0x"),
+        "createdContractCode" => Map.get(call, "output", "0x"),
+        "traceAddress" => if(inner?, do: Enum.reverse(new_trace_address), else: []),
+        "error" => call["error"]
+      }
+      |> case do
+        %{"error" => nil} = ok_call ->
+          ok_call
+          |> Map.delete("error")
+          # to handle staticcall, all other cases handled by EthereumJSONRPC.Geth.Call.elixir_to_internal_transaction_params/1
+          |> Map.put("output", Map.get(call, "output", "0x"))
+
+        error_call ->
+          error_call
+      end
+
+    parse_call_tracer_calls(
+      Map.get(call, "calls", []),
+      [formatted_call | acc],
+      if(inner?, do: new_trace_address, else: [])
+    )
+  end
+
+  defp parse_call_tracer_calls(calls, acc, trace_address, _inner) when is_list(calls) do
+    calls
+    |> Stream.with_index()
+    |> Enum.reduce(acc, &parse_call_tracer_calls(&1, &2, trace_address))
+  end
+
  defp reduce_internal_transactions_params(internal_transactions_params) when is_list(internal_transactions_params) do
    internal_transactions_params
    |> Enum.reduce({:ok, []}, &internal_transactions_params_reducer/2)
--- a/apps/ethereum_jsonrpc/test/ethereum_jsonrpc/geth_test.exs
+++ b/apps/ethereum_jsonrpc/test/ethereum_jsonrpc/geth_test.exs
@ -11,6 +11,8 @@ defmodule EthereumJSONRPC.GethTest do
    # Infura Mainnet does not support debug_traceTransaction, so this cannot be tested expect in Mox
    setup do
      EthereumJSONRPC.Case.Geth.Mox.setup()
+      initial_env = Application.get_all_env(:ethereum_jsonrpc)
+      on_exit(fn -> Application.put_all_env([{:ethereum_jsonrpc, initial_env}]) end)
    end

    setup :verify_on_exit!
@ -45,6 +47,8 @@ defmodule EthereumJSONRPC.GethTest do
         ]}
      end)

+      Application.put_env(:ethereum_jsonrpc, Geth, tracer: "js")
+
      assert {:ok,
              [
                %{
@ -75,6 +79,361 @@ defmodule EthereumJSONRPC.GethTest do
                 json_rpc_named_arguments
               )
    end
+
+    test "call_tracer contract calls results are the same as js tracer", %{
+      json_rpc_named_arguments: json_rpc_named_arguments
+    } do
+      transaction_hash = "0xb342cafc6ac552c3be2090561453204c8784caf025ac8267320834e4cd163d96"
+      block_number = 3_287_375
+      transaction_index = 13
+
+      transaction_params = %{
+        block_number: block_number,
+        transaction_index: transaction_index,
+        hash_data: transaction_hash
+      }
+
+      tracer = File.read!("priv/js/ethereum_jsonrpc/geth/debug_traceTransaction/tracer.js")
+
+      expect(EthereumJSONRPC.Mox, :json_rpc, 1, fn
+        [%{id: id, params: [^transaction_hash, %{tracer: "callTracer"}]}], _ ->
+          {:ok,
+           [
+             %{
+               id: id,
+               result: %{
+                 "calls" => [
+                   %{
+                     "calls" => [
+                       %{
+                         "from" => "0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                         "gas" => "0x12816",
+                         "gasUsed" => "0x229e",
+                         "input" =>
+                           "0xa9059cbb0000000000000000000000009507c04b10486547584c37bcbd931b2a4fee9a4100000000000000000000000000000000000000000000000322a0aedb1fe2c7e6",
+                         "output" => "0x",
+                         "to" => "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
+                         "type" => "CALL",
+                         "value" => "0x0"
+                       },
+                       %{
+                         "calls" => [
+                           %{
+                             "from" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                             "gas" => "0xfbb8",
+                             "gasUsed" => "0x211",
+                             "input" => "0x70a0823100000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                             "output" => "0x",
+                             "to" => "0xa2327a938febf5fec13bacfb16ae10ecbc4cbdcf",
+                             "type" => "DELEGATECALL"
+                           }
+                         ],
+                         "from" => "0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                         "gas" => "0x1029c",
+                         "gasUsed" => "0x523",
+                         "input" => "0x70a0823100000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                         "output" => "0x",
+                         "to" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                         "type" => "STATICCALL"
+                       },
+                       %{
+                         "calls" => [
+                           %{
+                             "calls" => [
+                               %{
+                                 "from" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                                 "gas" => "0xe3e3",
+                                 "gasUsed" => "0x259c",
+                                 "input" =>
+                                   "0xa9059cbb00000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f564000000000000000000000000000000000000000000000000000000014e53ad37c",
+                                 "output" => "0x",
+                                 "to" => "0xa2327a938febf5fec13bacfb16ae10ecbc4cbdcf",
+                                 "type" => "DELEGATECALL"
+                               }
+                             ],
+                             "from" => "0x9507c04b10486547584c37bcbd931b2a4fee9a41",
+                             "gas" => "0xea6a",
+                             "gasUsed" => "0x28b1",
+                             "input" =>
+                               "0xa9059cbb00000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f564000000000000000000000000000000000000000000000000000000014e53ad37c",
+                             "output" => "0x",
+                             "to" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                             "type" => "CALL",
+                             "value" => "0x0"
+                           }
+                         ],
+                         "from" => "0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                         "gas" => "0xfa71",
+                         "gasUsed" => "0x3627",
+                         "input" =>
+                           "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",
+                         "output" => "0x",
+                         "to" => "0x9507c04b10486547584c37bcbd931b2a4fee9a41",
+                         "type" => "CALL",
+                         "value" => "0x0"
+                       },
+                       %{
+                         "calls" => [
+                           %{
+                             "from" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                             "gas" => "0xbcc4",
+                             "gasUsed" => "0x211",
+                             "input" => "0x70a0823100000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                             "output" => "0x",
+                             "to" => "0xa2327a938febf5fec13bacfb16ae10ecbc4cbdcf",
+                             "type" => "DELEGATECALL"
+                           }
+                         ],
+                         "from" => "0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                         "gas" => "0xc2a9",
+                         "gasUsed" => "0x523",
+                         "input" => "0x70a0823100000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                         "output" => "0x",
+                         "to" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                         "type" => "STATICCALL"
+                       }
+                     ],
+                     "from" => "0x9507c04b10486547584c37bcbd931b2a4fee9a41",
+                     "gas" => "0x185b2",
+                     "gasUsed" => "0xd38e",
+                     "input" =>
+                       "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",
+                     "output" => "0x",
+                     "to" => "0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                     "type" => "CALL",
+                     "value" => "0x0"
+                   }
+                 ],
+                 "from" => "0x56d0c33e5e8cb6390cebd7369d2fe7e7870a04e0",
+                 "gas" => "0x1a8c6",
+                 "gasUsed" => "0xf1f6",
+                 "input" =>
+                   "0x33000000000000000014e53ad37c0000000322a0aedb1fe2c7e6010201f4ff010088e6a0c2ddd26feeb64f039a2c41296fcb3f5640a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48c02aaa39b223fe8d0a0e5c4f27ead9083c756cc203",
+                 "output" => "0x",
+                 "time" => "48.391824ms",
+                 "to" => "0x9507c04b10486547584c37bcbd931b2a4fee9a41",
+                 "type" => "CALL",
+                 "value" => "0xfa72c6"
+               }
+             }
+           ]}
+      end)
+
+      expect(EthereumJSONRPC.Mox, :json_rpc, 1, fn
+        [%{id: id, params: [^transaction_hash, %{tracer: ^tracer}]}], _ ->
+          {:ok,
+           [
+             %{
+               id: id,
+               result: [
+                 %{
+                   "callType" => "call",
+                   "from" => "0x56d0c33e5e8cb6390cebd7369d2fe7e7870a04e0",
+                   "gas" => "0x1a8c6",
+                   "gasUsed" => "0xf1f6",
+                   "input" =>
+                     "0x33000000000000000014e53ad37c0000000322a0aedb1fe2c7e6010201f4ff010088e6a0c2ddd26feeb64f039a2c41296fcb3f5640a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48c02aaa39b223fe8d0a0e5c4f27ead9083c756cc203",
+                   "output" => "0x",
+                   "to" => "0x9507c04b10486547584c37bcbd931b2a4fee9a41",
+                   "traceAddress" => [],
+                   "type" => "call",
+                   "value" => "0xfa72c6"
+                 },
+                 %{
+                   "callType" => "call",
+                   "from" => "0x9507c04b10486547584c37bcbd931b2a4fee9a41",
+                   "gas" => "0x185b2",
+                   "gasUsed" => "0xd38e",
+                   "input" =>
+                     "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",
+                   "output" => "0x",
+                   "to" => "0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                   "traceAddress" => [0],
+                   "type" => "call",
+                   "value" => "0x0"
+                 },
+                 %{
+                   "callType" => "call",
+                   "from" => "0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                   "gas" => "0x12816",
+                   "gasUsed" => "0x229e",
+                   "input" =>
+                     "0xa9059cbb0000000000000000000000009507c04b10486547584c37bcbd931b2a4fee9a4100000000000000000000000000000000000000000000000322a0aedb1fe2c7e6",
+                   "output" => "0x",
+                   "to" => "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
+                   "traceAddress" => [0, 0],
+                   "type" => "call",
+                   "value" => "0x0"
+                 },
+                 %{
+                   "callType" => "staticcall",
+                   "from" => "0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                   "gas" => "0x1029c",
+                   "gasUsed" => "0x523",
+                   "input" => "0x70a0823100000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                   "output" => "0x",
+                   "to" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                   "traceAddress" => [0, 1],
+                   "type" => "call",
+                   "value" => "0x0"
+                 },
+                 %{
+                   "callType" => "delegatecall",
+                   "from" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                   "gas" => "0xfbb8",
+                   "gasUsed" => "0x211",
+                   "input" => "0x70a0823100000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                   "output" => "0x",
+                   "to" => "0xa2327a938febf5fec13bacfb16ae10ecbc4cbdcf",
+                   "traceAddress" => [0, 1, 0],
+                   "type" => "call",
+                   "value" => "0x0"
+                 },
+                 %{
+                   "callType" => "call",
+                   "from" => "0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                   "gas" => "0xfa71",
+                   "gasUsed" => "0x3627",
+                   "input" =>
+                     "0xfa461e3300000000000000000000000000000000000000000000000000000014e53ad37cfffffffffffffffffffffffffffffffffffffffffffffffcdd5f5124e01d381a000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000e0000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc200000000000000000000000000000000000000000000000000000000000001f400000000000000000000000000000000000000000000000000000014e53ad37c00000000000000000000000000000000000000000000000322a0aedb1fe2c7e600000000000000000000000000000000000000000000000000000000000000c00000000000000000000000000000000000000000000000000000000000000000",
+                   "output" => "0x",
+                   "to" => "0x9507c04b10486547584c37bcbd931b2a4fee9a41",
+                   "traceAddress" => [0, 2],
+                   "type" => "call",
+                   "value" => "0x0"
+                 },
+                 %{
+                   "callType" => "call",
+                   "from" => "0x9507c04b10486547584c37bcbd931b2a4fee9a41",
+                   "gas" => "0xea6a",
+                   "gasUsed" => "0x28b1",
+                   "input" =>
+                     "0xa9059cbb00000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f564000000000000000000000000000000000000000000000000000000014e53ad37c",
+                   "output" => "0x",
+                   "to" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                   "traceAddress" => [0, 2, 0],
+                   "type" => "call",
+                   "value" => "0x0"
+                 },
+                 %{
+                   "callType" => "delegatecall",
+                   "from" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                   "gas" => "0xe3e3",
+                   "gasUsed" => "0x259c",
+                   "input" =>
+                     "0xa9059cbb00000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f564000000000000000000000000000000000000000000000000000000014e53ad37c",
+                   "output" => "0x",
+                   "to" => "0xa2327a938febf5fec13bacfb16ae10ecbc4cbdcf",
+                   "traceAddress" => [0, 2, 0, 0],
+                   "type" => "call",
+                   "value" => "0x0"
+                 },
+                 %{
+                   "callType" => "staticcall",
+                   "from" => "0x88e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                   "gas" => "0xc2a9",
+                   "gasUsed" => "0x523",
+                   "input" => "0x70a0823100000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                   "output" => "0x",
+                   "to" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                   "traceAddress" => [0, 3],
+                   "type" => "call",
+                   "value" => "0x0"
+                 },
+                 %{
+                   "callType" => "delegatecall",
+                   "from" => "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
+                   "gas" => "0xbcc4",
+                   "gasUsed" => "0x211",
+                   "input" => "0x70a0823100000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640",
+                   "output" => "0x",
+                   "to" => "0xa2327a938febf5fec13bacfb16ae10ecbc4cbdcf",
+                   "traceAddress" => [0, 3, 0],
+                   "type" => "call",
+                   "value" => "0x0"
+                 }
+               ]
+             }
+           ]}
+      end)
+
+      call_tracer_internal_txs = Geth.fetch_internal_transactions([transaction_params], json_rpc_named_arguments)
+
+      Application.put_env(:ethereum_jsonrpc, Geth, tracer: "js")
+
+      assert call_tracer_internal_txs ==
+               Geth.fetch_internal_transactions([transaction_params], json_rpc_named_arguments)
+    end
+
+    test "call_tracer contract creation results are the same as js tracer", %{
+      json_rpc_named_arguments: json_rpc_named_arguments
+    } do
+      transaction_hash = "0xb342cafc6ac552c3be2090561453204c8784caf025ac8267320834e4cd163d96"
+      block_number = 3_287_375
+      transaction_index = 13
+
+      transaction_params = %{
+        block_number: block_number,
+        transaction_index: transaction_index,
+        hash_data: transaction_hash
+      }
+
+      tracer = File.read!("priv/js/ethereum_jsonrpc/geth/debug_traceTransaction/tracer.js")
+
+      expect(EthereumJSONRPC.Mox, :json_rpc, 1, fn
+        [%{id: id, params: [^transaction_hash, %{tracer: "callTracer"}]}], _ ->
+          {:ok,
+           [
+             %{
+               id: id,
+               result: %{
+                 "type" => "CREATE",
+                 "from" => "0x117b358218da5a4f647072ddb50ded038ed63d17",
+                 "to" => "0x205a6b72ce16736c9d87172568a9c0cb9304de0d",
+                 "value" => "0x0",
+                 "gas" => "0x106f5",
+                 "gasUsed" => "0x106f5",
+                 "input" =>
+                   "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",
+                 "output" =>
+                   "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"
+               }
+             }
+           ]}
+      end)
+
+      expect(EthereumJSONRPC.Mox, :json_rpc, 1, fn
+        [%{id: id, params: [^transaction_hash, %{tracer: ^tracer}]}], _ ->
+          {:ok,
+           [
+             %{
+               id: id,
+               result: [
+                 %{
+                   "type" => "create",
+                   "from" => "0x117b358218da5a4f647072ddb50ded038ed63d17",
+                   "init" =>
+                     "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",
+                   "createdContractAddressHash" => "0x205a6b72ce16736c9d87172568a9c0cb9304de0d",
+                   "createdContractCode" =>
+                     "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",
+                   "traceAddress" => [],
+                   "value" => "0x0",
+                   "gas" => "0x106f5",
+                   "gasUsed" => "0x106f5"
+                 }
+               ]
+             }
+           ]}
+      end)
+
+      call_tracer_internal_txs = Geth.fetch_internal_transactions([transaction_params], json_rpc_named_arguments)
+
+      Application.put_env(:ethereum_jsonrpc, Geth, tracer: "js")
+
+      assert call_tracer_internal_txs ==
+               Geth.fetch_internal_transactions([transaction_params], json_rpc_named_arguments)
+    end
  end

  describe "fetch_block_internal_transactions/1" do
--- a/config/runtime.exs
+++ b/config/runtime.exs
@ -180,7 +180,10 @@ config :ethereum_jsonrpc,
  disable_archive_balances?: System.get_env("ETHEREUM_JSONRPC_DISABLE_ARCHIVE_BALANCES", "false") == "true"

 debug_trace_transaction_timeout = System.get_env("ETHEREUM_JSONRPC_DEBUG_TRACE_TRANSACTION_TIMEOUT", "5s")
-config :ethereum_jsonrpc, EthereumJSONRPC.Geth, debug_trace_transaction_timeout: debug_trace_transaction_timeout
+
+config :ethereum_jsonrpc, EthereumJSONRPC.Geth,
+  debug_trace_transaction_timeout: debug_trace_transaction_timeout,
+  tracer: System.get_env("INDEXER_INTERNAL_TRANSACTIONS_TRACER_TYPE", "call_tracer")

 config :ethereum_jsonrpc, EthereumJSONRPC.PendingTransaction,
  type: System.get_env("ETHEREUM_JSONRPC_PENDING_TRANSACTIONS_TYPE", "default")
--- a/docker-compose/envs/common-blockscout.env
+++ b/docker-compose/envs/common-blockscout.env
@ -93,6 +93,7 @@ INDEXER_DISABLE_INTERNAL_TRANSACTIONS_FETCHER=false
 # TOKEN_ID_MIGRATION_FIRST_BLOCK=
 # TOKEN_ID_MIGRATION_CONCURRENCY=
 # TOKEN_ID_MIGRATION_BATCH_SIZE=
+# INDEXER_INTERNAL_TRANSACTIONS_TRACER_TYPE=
 # WEBAPP_URL=
 # API_URL=
 WOBSERVER_ENABLED=false
--- a/docker/Makefile
+++ b/docker/Makefile
@ -475,6 +475,9 @@ endif
 ifdef INDEXER_EMPTY_BLOCKS_SANITIZER_BATCH_SIZE
    BLOCKSCOUT_CONTAINER_PARAMS += -e 'INDEXER_EMPTY_BLOCKS_SANITIZER_BATCH_SIZE=$(INDEXER_EMPTY_BLOCKS_SANITIZER_BATCH_SIZE)'
 endif
+ifdef INDEXER_INTERNAL_TRANSACTIONS_TRACER_TYPE
+    BLOCKSCOUT_CONTAINER_PARAMS += -e 'INDEXER_INTERNAL_TRANSACTIONS_TRACER_TYPE=$(INDEXER_INTERNAL_TRANSACTIONS_TRACER_TYPE)'
+endif
 ifdef TOKEN_ID_MIGRATION_FIRST_BLOCK
    BLOCKSCOUT_CONTAINER_PARAMS += -e 'INDEXER_EMPTY_BLOCKS_SANITIZER_BATCH_SIZE=$(INDEXER_EMPTY_BLOCKS_SANITIZER_BATCH_SIZE)'
 endif