Fix import spec file to support accounts without 0x prefix and single block reward

CHANGELOG.md

@@ -3,8 +3,8 @@
 ### Features
 
 ### Fixes
-
+- [#2990](https://github.com/poanetwork/blockscout/pull/2990) - Fix import of Parity spec file
-- [#2897]( https://github.com/poanetwork/blockscout/pull/2897) - remove duplicate indexes
+- [#2897](https://github.com/poanetwork/blockscout/pull/2897) - remove duplicate indexes
 
 ### Chore
 

apps/explorer/lib/explorer/chain_spec/parity/importer.ex

@@ -103,7 +103,8 @@ defmodule Explorer.ChainSpec.Parity.Importer do
       !is_nil(map["balance"])
     end)
     |> Stream.map(fn {address, %{"balance" => value}} ->
-      {:ok, address_hash} = AddressHash.cast(address)
+      formatted_address = if String.starts_with?(address, "0x"), do: address, else: "0x" <> address
+      {:ok, address_hash} = AddressHash.cast(formatted_address)
       balance = parse_number(value)
 
       %{address_hash: address_hash, value: balance}
@@ -135,7 +136,7 @@ defmodule Explorer.ChainSpec.Parity.Importer do
     }
   end
 
-  defp parse_hex_numbers(rewards) do
+  defp parse_hex_numbers(rewards) when is_map(rewards) do
     Enum.map(rewards, fn {hex_block_number, hex_reward} ->
       block_number = parse_number(hex_block_number)
       {:ok, reward} = hex_reward |> parse_number() |> Wei.cast()
@@ -144,6 +145,12 @@ defmodule Explorer.ChainSpec.Parity.Importer do
     end)
   end
 
+  defp parse_hex_numbers(reward) do
+    {:ok, reward} = reward |> parse_number() |> Wei.cast()
+
+    [{0, reward}]
+  end
+
   defp parse_number("0x" <> hex_number) do
     {number, ""} = Integer.parse(hex_number, 16)
 

apps/explorer/test/explorer/chain_spec/parity/importer_test.exs

@@ -11,6 +11,10 @@ defmodule Explorer.ChainSpec.Parity.ImporterTest do
               |> File.read!()
               |> Jason.decode!()
 
+  @chain_classic_spec "#{File.cwd!()}/test/support/fixture/chain_spec/classic.json"
+                      |> File.read!()
+                      |> Jason.decode!()
+
   describe "emission_rewards/1" do
     test "fetches and formats reward ranges" do
       assert Importer.emission_rewards(@chain_spec) == [
@@ -28,6 +32,15 @@ defmodule Explorer.ChainSpec.Parity.ImporterTest do
                }
              ]
     end
+
+    test "fetches and formats a single reward" do
+      assert Importer.emission_rewards(@chain_classic_spec) == [
+               %{
+                 block_range: %Range{from: 1, to: :infinity},
+                 reward: %Wei{value: Decimal.new(5_000_000_000_000_000_000)}
+               }
+             ]
+    end
   end
 
   describe "import_emission_rewards/1" do
@@ -104,5 +117,14 @@ defmodule Explorer.ChainSpec.Parity.ImporterTest do
       assert CoinBalance |> Repo.all() |> Enum.count() == 403
       assert Address |> Repo.all() |> Enum.count() == 403
     end
+
+    test "imports coin balances without 0x" do
+      {:ok, %{address_coin_balances: address_coin_balances}} =
+        Importer.import_genesis_coin_balances(@chain_classic_spec)
+
+      assert Enum.count(address_coin_balances) == 8894
+      assert CoinBalance |> Repo.all() |> Enum.count() == 8894
+      assert Address |> Repo.all() |> Enum.count() == 8894
+    end
   end
 end