The x/feemarket
module provides AnteDecorator
s that are recursively chained together into a single . These decorators perform basic validity checks on an Ethereum or Cosmos SDK transaction, such that it could be thrown out of the transaction Mempool.
Note that the AnteHandler
is run for every transaction and called on both CheckTx
and DeliverTx
.
MinGasPriceDecorator
Rejects Cosmos SDK transactions with transaction fees lower than MinGasPrice * GasLimit
.
EthMinGasPriceDecorator
Rejects EVM transactions with transactions fees lower than MinGasPrice * GasLimit
. - For LegacyTx
and AccessListTx
, the GasPrice * GasLimit
is used. - For EIP-1559 (aka. DynamicFeeTx
), the EffectivePrice * GasLimit
is used.
EthGasConsumeDecorator
Calculates the effective fees to deduct and the tx priority according to EIP-1559 spec, then deducts the fees and sets the tx priority in the response.
When there are multiple messages in the transaction, choose the lowest priority in them.