MockEvm2EvmOffRamp API reference

MockEvm2EvmOffRamp

This contract handles off-ramp processes for CCIP messages

DynamicConfig

struct DynamicConfig {
  uint32 permissionLessExecutionThresholdSeconds;
  address router;
  address priceRegistry;
  uint16 maxNumberOfTokensPerMsg;
  uint32 maxDataBytes;
  uint32 maxPoolReleaseOrMintGas;
}

CanOnlySimulatorCall

error CanOnlySimulatorCall()

Error thrown when a function can only be called by the simulator

ReceiverError

error ReceiverError(bytes error)

Error thrown when there is an error in the receiver

Parameters

Name	Type	Description
error	bytes	The error data

TokenHandlingError

error TokenHandlingError(bytes error)

Error thrown when there is an error in token handling

Parameters

Name	Type	Description
error	bytes	The error data

UnsupportedToken

error UnsupportedToken(contract IERC20 token)

Error thrown when an unsupported token is encountered

Parameters

Name	Type	Description
token	contract IERC20	The unsupported token

constructor

constructor(address ccipLocalSimulator, struct MockEvm2EvmOffRamp.DynamicConfig dynamicConfig, struct RateLimiter.Config config, uint64 sourceChainSelector, address[] sourceTokens, address[] pools) public

Constructor to initialize the contract.

Parameters

Name	Type	Description
ccipLocalSimulator	address	Address of the CCIP local simulator.
dynamicConfig	struct MockEvm2EvmOffRamp.DynamicConfig	Initial dynamic configuration parameters.
config	struct RateLimiter.Config	Rate limiter configuration.
sourceChainSelector	uint64	Source chain selector.
sourceTokens	address[]	List of supported tokens on the source chain.
pools	address[]	List of pools corresponding to the supported tokens on the source chain.

executeSingleMessage

function executeSingleMessage(struct Internal.EVM2EVMMessage message, bytes[] offchainTokenData) external

Executes a single CCIP message.

Parameters

Name	Type	Description
message	struct Internal.EVM2EVMMessage	The CCIP message to be executed.
offchainTokenData	bytes[]	Additional off-chain token data.

_releaseOrMintTokens

function _releaseOrMintTokens(struct Client.EVMTokenAmount[] sourceTokenAmounts, bytes originalSender, address receiver, bytes[] sourceTokenData, bytes[] offchainTokenData) internal returns (struct Client.EVMTokenAmount[])

Uses pools to release or mint a number of different tokens to a receiver address.

This function wraps the token pool call in a try-catch block to gracefully handle any non-rate limiting errors that may occur. If we encounter a rate limiting related error we bubble it up. If we encounter a non-rate limiting error we wrap it in a TokenHandlingError.

Parameters

Name	Type	Description
sourceTokenAmounts	struct Client.EVMTokenAmount[]	List of tokens and amount values to be released/minted.
originalSender	bytes	The message sender.
receiver	address	The address that will receive the tokens.
sourceTokenData	bytes[]	Array of token data returned by token pools on the source chain.
offchainTokenData	bytes[]	Array of token data fetched offchain by the DON.

Return Values

Name	Type	Description
[0]	struct Client.EVMTokenAmount[]	destTokenAmounts - The amounts of tokens released or minted.

getPoolBySourceToken

function getPoolBySourceToken(contract IERC20 sourceToken) public view returns (contract IPool)

Get a token pool by its source token.

Parameters

Name	Type	Description
sourceToken	contract IERC20	The source token.

Return Values

Name	Type	Description
[0]	contract IPool	pool - The corresponding token pool.

MockEvm2EvmOffRamp API reference