Merge pull request #7811 from blockscout/filter-addresses-before-insertion

Filter addresses before insertion

CHANGELOG.md

@@ -4,6 +4,8 @@
 
 ### Features
 
+- [#7811](https://github.com/blockscout/blockscout/pull/7811) - Filter addresses before insertion
+
 ### Fixes
 
 - [#7772](https://github.com/blockscout/blockscout/pull/7772) - Fix parsing of database password period(s)

apps/explorer/lib/explorer/chain/import/runner/addresses.ex

@@ -58,10 +58,28 @@ defmodule Explorer.Chain.Import.Runner.Addresses do
         end)
       end)
 
+    ordered_changes_list =
+      changes_list_with_defaults
+      |> Enum.group_by(& &1.hash)
+      |> Enum.map(fn {_, grouped_addresses} ->
+        Enum.max_by(grouped_addresses, fn address ->
+          address_max_by(address)
+        end)
+      end)
+      |> Enum.sort_by(& &1.hash)
+
     multi
-    |> Multi.run(:addresses, fn repo, _ ->
+    |> Multi.run(:filter_addresses, fn repo, _ ->
+      Instrumenter.block_import_stage_runner(
+        fn -> filter_addresses(repo, ordered_changes_list) end,
+        :addresses,
+        :addresses,
+        :filter_addresses
+      )
+    end)
+    |> Multi.run(:addresses, fn repo, %{filter_addresses: addresses} ->
       Instrumenter.block_import_stage_runner(
-        fn -> insert(repo, changes_list_with_defaults, insert_options) end,
+        fn -> insert(repo, addresses, insert_options) end,
         :addresses,
         :addresses,
         :addresses
@@ -83,29 +101,56 @@ defmodule Explorer.Chain.Import.Runner.Addresses do
 
   ## Private Functions
 
+  @spec filter_addresses(Repo.t(), [map()]) :: {:ok, [map()]}
+  defp filter_addresses(repo, changes_list) do
+    hashes = Enum.map(changes_list, & &1.hash)
+
+    existing_addresses_query =
+      from(a in Address,
+        where: a.hash in ^hashes,
+        select: [:hash, :contract_code, :fetched_coin_balance_block_number, :nonce]
+      )
+
+    existing_addresses_map =
+      existing_addresses_query
+      |> repo.all()
+      |> Map.new(&{&1.hash, &1})
+
+    filtered_addresses =
+      changes_list
+      |> Enum.reduce([], fn address, acc ->
+        existing_address = existing_addresses_map[address.hash]
+
+        if should_update?(address, existing_address) do
+          [address | acc]
+        else
+          acc
+        end
+      end)
+      |> Enum.reverse()
+
+    {:ok, filtered_addresses}
+  end
+
+  defp should_update?(new_address, existing_address) do
+    is_nil(existing_address) or
+      (not is_nil(new_address[:contract_code]) and new_address[:contract_code] != existing_address.contract_code) or
+      (not is_nil(new_address[:fetched_coin_balance_block_number]) and
+         (is_nil(existing_address.fetched_coin_balance_block_number) or
+            new_address[:fetched_coin_balance_block_number] >= existing_address.fetched_coin_balance_block_number)) or
+      (not is_nil(new_address[:nonce]) and
+         (is_nil(existing_address.nonce) or new_address[:nonce] > existing_address.nonce))
+  end
+
   @spec insert(Repo.t(), [%{hash: Hash.Address.t()}], %{
           optional(:on_conflict) => Import.Runner.on_conflict(),
           required(:timeout) => timeout,
           required(:timestamps) => Import.timestamps()
         }) :: {:ok, [Address.t()]}
-  defp insert(repo, changes_list, %{timeout: timeout, timestamps: timestamps} = options) when is_list(changes_list) do
+  defp insert(repo, ordered_changes_list, %{timeout: timeout, timestamps: timestamps} = options)
+       when is_list(ordered_changes_list) do
     on_conflict = Map.get_lazy(options, :on_conflict, &default_on_conflict/0)
 
-    # Enforce Address ShareLocks order (see docs: sharelocks.md)
-    ordered_changes_list =
-      changes_list
-      |> Enum.group_by(fn %{
-                            hash: hash
-                          } ->
-        {hash}
-      end)
-      |> Enum.map(fn {_, grouped_addresses} ->
-        Enum.max_by(grouped_addresses, fn address ->
-          address_max_by(address)
-        end)
-      end)
-      |> Enum.sort_by(& &1.hash)
-
     Import.insert_changes_list(
       repo,
       ordered_changes_list,