info
For Cadence 0.42 go to Legacy Docs
FlowFees
The FlowFees contract is where all the collected flow fees are gathered.
Source: FlowFees.cdc
| Network | Contract Address |
|---|---|
| Emulator | 0xe5a8b7f23e8b548f |
| Cadence Testing Framework | 0x0000000000000004 |
| Testnet | 0x912d5440f7e3769e |
| Mainnet | 0xf919ee77447b7497 |
Events​
Important events for FlowFees are:
_11// Event that is emitted when tokens are deposited to the fee vault_11access(all) event TokensDeposited(amount: UFix64)_11_11// Event that is emitted when tokens are withdrawn from the fee vault_11access(all) event TokensWithdrawn(amount: UFix64)_11_11// Event that is emitted when fees are deducted_11access(all) event FeesDeducted(amount: UFix64, inclusionEffort: UFix64, executionEffort: UFix64)_11_11// Event that is emitted when fee parameters change_11access(all) event FeeParametersChanged(surgeFactor: UFix64, inclusionEffortCost: UFix64, executionEffortCost: UFix64)
FlowStorageFees
The FlowStorageFees contract defines the parameters and utility methods for storage fees.
Source: FlowStorageFees.cdc
| Network | Contract Address |
|---|---|
| Emulator | 0xf8d6e0586b0a20c7 |
| Cadence Testing Framework | 0x0000000000000001 |
| Testnet | 0x8c5303eaa26202d6 |
| Mainnet | 0xe467b9dd11fa00df |
Events​
Important events for FlowStorageFees are:
_10// Emitted when the amount of storage capacity an account has per reserved Flow token changes_10access(all) event StorageMegaBytesPerReservedFLOWChanged(_ storageMegaBytesPerReservedFLOW: UFix64)_10_10// Emitted when the minimum amount of Flow tokens that an account needs to have reserved for storage capacity changes._10access(all) event MinimumStorageReservationChanged(_ minimumStorageReservation: UFix64)