Merge pull request blockscout#6687 from blockscout/fix-missing-block-…

…ranges-initial-state

Fix MissingRangesCollector initial state

CHANGELOG.md

@@ -34,7 +34,7 @@
 - [#6510](https://github.com/blockscout/blockscout/pull/6510) - Set consensus: false for blocks on int transaction foreign_key_violation
 - [#6565](https://github.com/blockscout/blockscout/pull/6565) - Set restart: :permanent for permanent fetchers
 - [#6568](https://github.com/blockscout/blockscout/pull/6568) - Drop unfetched_token_balances index
-- [#6583](https://github.com/blockscout/blockscout/pull/6583) - Missing ranges collector
+- [#6583](https://github.com/blockscout/blockscout/pull/6583), [#6687](https://github.com/blockscout/blockscout/pull/6687) - Missing ranges collector
 - [#6647](https://github.com/blockscout/blockscout/pull/6647) - Pending block operations update
 
 ### Fixes

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

@@ -185,7 +185,19 @@ defmodule Indexer.Block.Catchup.MissingRangesCollector do
   defp last_block do
     case Integer.parse(Application.get_env(:indexer, :last_block)) do
       {block, ""} -> block + 1
-      _ -> BlockNumber.get_max()
+      _ -> fetch_max_block_number()
+    end
+  end
+
+  defp fetch_max_block_number do
+    case BlockNumber.get_max() do
+      0 ->
+        json_rpc_named_arguments = Application.get_env(:indexer, :json_rpc_named_arguments)
+        {:ok, number} = EthereumJSONRPC.fetch_block_number_by_tag("latest", json_rpc_named_arguments)
+        number
+
+      number ->
+        number
     end
   end
 

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

@@ -34,6 +34,15 @@ defmodule Indexer.Block.Catchup.FetcherTest do
   end
 
   describe "import/1" do
+    setup do
+      configuration = Application.get_env(:indexer, :last_block)
+      Application.put_env(:indexer, :last_block, "0")
+
+      on_exit(fn ->
+        Application.put_env(:indexer, :last_block, configuration)
+      end)
+    end
+
     test "fetches uncles asynchronously", %{json_rpc_named_arguments: json_rpc_named_arguments} do
       CoinBalance.Supervisor.Case.start_supervised!(json_rpc_named_arguments: json_rpc_named_arguments)
       InternalTransaction.Supervisor.Case.start_supervised!(json_rpc_named_arguments: json_rpc_named_arguments)