Chunk realtime balances requests

CHANGELOG.md

@@ -13,6 +13,7 @@
 - [#7811](https://github.com/blockscout/blockscout/pull/7811) - Filter addresses before insertion
 - [#7895](https://github.com/blockscout/blockscout/pull/7895) - API v2: Add sorting to tokens page
 - [#7859](https://github.com/blockscout/blockscout/pull/7859) - Add TokenTotalSupplyUpdater
+- [#7873](https://github.com/blockscout/blockscout/pull/7873) - Chunk realtime balances requests
 
 ### Fixes
 

apps/ethereum_jsonrpc/lib/ethereum_jsonrpc.ex

@@ -185,7 +185,7 @@ defmodule EthereumJSONRPC do
           [%{required(:block_quantity) => quantity, required(:hash_data) => data()}],
           json_rpc_named_arguments
         ) :: {:ok, FetchedBalances.t()} | {:error, reason :: term}
-  def fetch_balances(params_list, json_rpc_named_arguments)
+  def fetch_balances(params_list, json_rpc_named_arguments, chunk_size \\ nil)
       when is_list(params_list) and is_list(json_rpc_named_arguments) do
     filtered_params =
       if Application.get_env(:ethereum_jsonrpc, :disable_archive_balances?) do
@@ -203,6 +203,7 @@ defmodule EthereumJSONRPC do
     with {:ok, responses} <-
            id_to_params
            |> FetchedBalances.requests()
+           |> chunk_requests(chunk_size)
            |> json_rpc(json_rpc_named_arguments) do
       {:ok, FetchedBalances.from_responses(responses, id_to_params)}
     end
@@ -550,6 +551,9 @@ defmodule EthereumJSONRPC do
     end
   end
 
+  defp chunk_requests(requests, nil), do: requests
+  defp chunk_requests(requests, chunk_size), do: Enum.chunk_every(requests, chunk_size)
+
   def first_block_to_fetch(config) do
     string_value = Application.get_env(:indexer, config)
 

apps/ethereum_jsonrpc/lib/ethereum_jsonrpc/http.ex

@@ -38,6 +38,10 @@ defmodule EthereumJSONRPC.HTTP do
     end
   end
 
+  def json_rpc([batch | _] = chunked_batch_request, options) when is_list(batch) do
+    chunked_json_rpc(chunked_batch_request, options, [])
+  end
+
   def json_rpc(batch_request, options) when is_list(batch_request) do
     chunked_json_rpc([batch_request], options, [])
   end

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

@@ -428,7 +428,7 @@ defmodule Indexer.Block.Realtime.Fetcher do
        ) do
     case options
          |> fetch_balances_params_list()
-         |> EthereumJSONRPC.fetch_balances(json_rpc_named_arguments) do
+         |> EthereumJSONRPC.fetch_balances(json_rpc_named_arguments, CoinBalance.batch_size()) do
       {:ok, %FetchedBalances{params_list: params_list, errors: []}} ->
         merged_addresses_params =
           %{address_coin_balances: params_list}

apps/indexer/lib/indexer/fetcher/coin_balance.ex

@@ -23,6 +23,8 @@ defmodule Indexer.Fetcher.CoinBalance do
   @default_max_batch_size 500
   @default_max_concurrency 4
 
+  def batch_size, do: defaults()[:max_batch_size]
+
   @doc """
   Asynchronously fetches balances for each address `hash` at the `block_number`.
   """

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

@@ -471,6 +471,7 @@ defmodule Indexer.Block.Realtime.FetcherTest do
                }
              ]}
 
+          [
             [
               %{
                 id: 0,
@@ -496,6 +497,7 @@ defmodule Indexer.Block.Realtime.FetcherTest do
                 method: "eth_getBalance",
                 params: ["0x698bf6943bab687b2756394624aa183f434f65da", "0x3C365F"]
               }
+            ]
           ],
           _ ->
             {:ok,
@@ -963,6 +965,7 @@ defmodule Indexer.Block.Realtime.FetcherTest do
                }
              ]}
 
+          [
             [
               %{
                 id: 0,
@@ -988,6 +991,7 @@ defmodule Indexer.Block.Realtime.FetcherTest do
                 method: "eth_getBalance",
                 params: ["0x698bf6943bab687b2756394624aa183f434f65da", "0x3C365F"]
               }
+            ]
           ],
           _ ->
             {:ok,
@@ -1182,6 +1186,7 @@ defmodule Indexer.Block.Realtime.FetcherTest do
                }
              ]}
 
+          [
             [
               %{
                 id: 0,
@@ -1189,10 +1194,12 @@ defmodule Indexer.Block.Realtime.FetcherTest do
                 method: "eth_getBalance",
                 params: ["0x5ee341ac44d344ade1ca3a771c59b98eb2a77df2", "0x3C365F"]
               }
+            ]
           ],
           _ ->
             {:ok, [%{id: 0, jsonrpc: "2.0", result: "0x53474fa377a46000"}]}
 
+          [
             [
               %{
                 id: 0,
@@ -1200,6 +1207,7 @@ defmodule Indexer.Block.Realtime.FetcherTest do
                 method: "eth_getBalance",
                 params: ["0x66c9343c7e8ca673a1fedf9dbf2cd7936dbbf7e3", "0x3C3660"]
               }
+            ]
           ],
           _ ->
             {:ok, [%{id: 0, jsonrpc: "2.0", result: "0x53507afe51f28000"}]}
@@ -1223,6 +1231,7 @@ defmodule Indexer.Block.Realtime.FetcherTest do
                }
              ]}
 
+          [
             [
               %{
                 id: 0,
@@ -1230,6 +1239,7 @@ defmodule Indexer.Block.Realtime.FetcherTest do
                 method: "eth_getBalance",
                 params: ["0x5ee341ac44d344ade1ca3a771c59b98eb2a77df2", "0x3C365F"]
               }
+            ]
           ],
           _ ->
             {:ok, [%{id: 0, jsonrpc: "2.0", result: "0x53474fa377a46000"}]}