L2MessageManager

L1_L2_MESSAGE_SETTER_ROLE

bytes32 L1_L2_MESSAGE_SETTER_ROLE

The role required to anchor L1 to L2 message hashes.

lastAnchoredL1MessageNumber

uint256 lastAnchoredL1MessageNumber

Contains the last L1 message number anchored on L2.

l1RollingHashes

mapping(uint256 => bytes32) l1RollingHashes

Contains the L1 to L2 messaging rolling hashes mapped to message number computed on L2.

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.