Get token type for token balance update if it is empty #4806
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Motivation
An error of such kind appears when indexing token balances:
application=indexer count=200 error_count=200 [debug] failed to import token balances: [#Ecto.Changeset<action: nil, changes: %{address_hash: %Explorer.Chain.Hash{byte_count: 20, bytes: <<91, 180, 86, 205, 9, 216, 81, 86, 225, 130, 210, 199, 121, 126, 180, 154, 67, 132, 1, 135>>}, block_number: 10963708, token_contract_address_hash: %Explorer.Chain.Hash{byte_count: 20, bytes: <<192, 42, 170, 57, 178, 35, 254, 141, 10, 14, 92, 79, 39, 234, 217, 8, 60, 117, 108, 194>>}, value: #Decimal<1>, value_fetched_at: ~U[2021-10-24 20:29:17.692398Z]}, errors: [token_type: {"can't be blank", [validation: :required]}]
Changelog
Check if all items in token balances changeset contain token type and if some of the items don't have a token type, fetch it from
tokens
tableChecklist for your Pull Request (PR)
CHANGELOG.md
with this PRmaster
in the Version column. Changes will be reflected in this table: https://docs.blockscout.com/for-developers/information-and-settings/env-variables.