IL2MessageManager
RollingHashUpdated
event RollingHashUpdated(uint256 messageNumber, bytes32 rollingHash)
Emitted after all messages are anchored on L2 and the latest message index and rolling hash stored.
NB: This event is used to provide data to the rollup. The last messageNumber and rollingHash, emitted in a rollup will be used in the public input for validating the L1->L2 messaging state transition.
Parameters
| Name | Type | Description |
|---|---|---|
| messageNumber | uint256 | The indexed unique L1 computed indexed message number for the message. |
| rollingHash | bytes32 | The indexed L1 rolling hash computed for the current message number. |
ServiceVersionMigrated
event ServiceVersionMigrated(uint256 version)
Emitted when the service switches over to a new version. This is currently not in use, but left for existing consumers.
Parameters
| Name | Type | Description |
|---|---|---|
| version | uint256 | The indexed version. |
MessageHashesListLengthIsZero
error MessageHashesListLengthIsZero()
Reverts when the message hashes array length is zero.
L1MessageNumberSynchronizationWrong
error L1MessageNumberSynchronizationWrong(uint256 expected, uint256 found)
Reverts when message number synchronization is mismatched.
L1RollingHashSynchronizationWrong
error L1RollingHashSynchronizationWrong(bytes32 expected, bytes32 found)
Reverts when rolling hash synchronization is mismatched.
FinalRollingHashIsZero
error FinalRollingHashIsZero()
Reverts when final rolling hash is zero hash.
anchorL1L2MessageHashes
function anchorL1L2MessageHashes(bytes32[] _messageHashes, uint256 _startingMessageNumber, uint256 _finalMessageNumber, bytes32 _finalRollingHash) external
Add cross-chain L1->L2 message hashes in storage.
Only address that has the role 'L1_L2_MESSAGE_SETTER_ROLE' are allowed to call this function. NB: In the unlikely event of a duplicate anchoring, the lastAnchoredL1MessageNumber MUST NOT be incremented. and the rolling hash not calculated, else synchronisation will break. If starting number is zero, an underflow error is expected.
Parameters
| Name | Type | Description |
|---|---|---|
| _messageHashes | bytes32[] | New message hashes to anchor on L2. |
| _startingMessageNumber | uint256 | The expected L1 message number to start when anchoring. |
| _finalMessageNumber | uint256 | The expected L1 message number to end on when anchoring. |
| _finalRollingHash | bytes32 | The expected L1 rolling hash to end on when anchoring. |