blockscout/apps/explorer/config/config.exs

# This file is responsible for configuring your application
# and its dependencies with the aid of the Mix.Config module.
#
# This configuration file is loaded before any dependency and
# is restricted to this project.
use Mix.Config

# General application configuration
config :explorer,
  ecto_repos: [Explorer.Repo],
  coin: System.get_env("COIN") || "POA",
  token_functions_reader_max_retries: 3,
  allowed_evm_versions:
    System.get_env("ALLOWED_EVM_VERSIONS") ||
      "homestead,tangerineWhistle,spuriousDragon,byzantium,constantinople,petersburg"

config :explorer, Explorer.Counters.AverageBlockTime, enabled: true

config :explorer, Explorer.Chain.BlockNumberCache, enabled: true

config :explorer, Explorer.ExchangeRates.Source.CoinMarketCap,
  pages: String.to_integer(System.get_env("COINMARKETCAP_PAGES") || "10")

balances_update_interval =
  if System.get_env("ADDRESS_WITH_BALANCES_UPDATE_INTERVAL") do
    case Integer.parse(System.get_env("ADDRESS_WITH_BALANCES_UPDATE_INTERVAL")) do
      {integer, ""} -> integer
      _ -> nil
    end
  end

config :explorer, Explorer.Counters.AddressesWithBalanceCounter,
  enabled: true,
  enable_consolidation: true,
  update_interval_in_seconds: balances_update_interval || 30 * 60

config :explorer, Explorer.ExchangeRates, enabled: true, store: :ets

config :explorer, Explorer.KnownTokens, enabled: true, store: :ets

config :explorer, Explorer.Integrations.EctoLogger, query_time_ms_threshold: :timer.seconds(2)

config :explorer, Explorer.Market.History.Cataloger, enabled: true

config :explorer, Explorer.Repo, migration_timestamps: [type: :utc_datetime_usec]

config :explorer, Explorer.Tracer,
  service: :explorer,
  adapter: SpandexDatadog.Adapter,
  trace_key: :blockscout

if System.get_env("METADATA_CONTRACT") && System.get_env("VALIDATORS_CONTRACT") do
  config :explorer, Explorer.Validator.MetadataRetriever,
    metadata_contract_address: System.get_env("METADATA_CONTRACT"),
    validators_contract_address: System.get_env("VALIDATORS_CONTRACT")

  config :explorer, Explorer.Validator.MetadataProcessor, enabled: true
else
  config :explorer, Explorer.Validator.MetadataProcessor, enabled: false
end

config :explorer, Explorer.Staking.PoolsReader,
  validators_contract_address: System.get_env("POS_VALIDATORS_CONTRACT"),
  staking_contract_address: System.get_env("POS_STAKING_CONTRACT")

if System.get_env("POS_STAKING_CONTRACT") do
  config :explorer, Explorer.Staking.EpochCounter,
    enabled: true,
    staking_contract_address: System.get_env("POS_STAKING_CONTRACT")
else
  config :explorer, Explorer.Staking.EpochCounter, enabled: false
end

if System.get_env("SUPPLY_MODULE") == "TokenBridge" do
  config :explorer, supply: Explorer.Chain.Supply.TokenBridge
end

if System.get_env("SOURCE_MODULE") == "TransactionAndLog" do
  config :explorer, Explorer.ExchangeRates.Source, source: Explorer.ExchangeRates.Source.TransactionAndLog
end

config :explorer,
  solc_bin_api_url: "https://solc-bin.ethereum.org",
  checksum_function: System.get_env("CHECKSUM_FUNCTION") && String.to_atom(System.get_env("CHECKSUM_FUNCTION"))

config :logger, :explorer,
  # keep synced with `config/config.exs`
  format: "$dateT$time $metadata[$level] $message\n",
  metadata:
    ~w(application fetcher request_id first_block_number last_block_number missing_block_range_count missing_block_count
       block_number step count error_count shrunk import_id transaction_id)a,
  metadata_filter: [application: :explorer]

config :spandex_ecto, SpandexEcto.EctoLogger,
  service: :ecto,
  tracer: Explorer.Tracer,
  otp_app: :explorer

# Import environment specific config. This must remain at the bottom
# of this file so it overrides the configuration defined above.
import_config "#{Mix.env()}.exs"