Solidity API
IInterchainGasEstimation
This is an interface for the InterchainGasEstimation contract
which allows for estimating gas fees for cross-chain communication on the Axelar network.
UnsupportedEstimationType
error UnsupportedEstimationType(enum GasEstimationType gasEstimationType)
GasInfoUpdated
event GasInfoUpdated(string chain, struct GasInfo info)
Event emitted when the gas price for a specific chain is updated.
Parameters
| Name |
Type |
Description |
| chain |
string |
The name of the chain |
| info |
struct GasInfo |
The gas info for the chain |
getGasInfo
function getGasInfo(string chain) external view returns (struct GasInfo)
Returns the gas price for a specific chain.
Parameters
| Name |
Type |
Description |
| chain |
string |
The name of the chain |
Return Values
| Name |
Type |
Description |
| [0] |
struct GasInfo |
gasInfo The gas info for the chain |
estimateGasFee
function estimateGasFee(string destinationChain, string destinationAddress, bytes payload, uint256 executionGasLimit, bytes params) external view returns (uint256 gasEstimate)
Estimates the gas fee for a cross-chain contract call.
Parameters
| Name |
Type |
Description |
| destinationChain |
string |
Axelar registered name of the destination chain |
| destinationAddress |
string |
Destination contract address being called |
| payload |
bytes |
|
| executionGasLimit |
uint256 |
The gas limit to be used for the destination contract execution, e.g. pass in 200k if your app consumes needs upto 200k for this contract call |
| params |
bytes |
Additional parameters for the gas estimation |
Return Values
| Name |
Type |
Description |
| gasEstimate |
uint256 |
The cross-chain gas estimate, in terms of source chain’s native gas token that should be forwarded to the gas service. |