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. |