Currently the circuit does not use an Exit Leaf at the Exit MerkleTree
when the Amount=0 & EffectiveAmount=0, but it does use an Exit Leaf when
the Amount>0 but EffectiveAmount=0 (for example when tx.Amount >
sender.Balance). This is a particularity of the approach of the circuit,
the idea will be in the future to update the circuit and when Amount>0
but EffectiveAmount=0, to not add the Exit in the Exits MerkleTree, but
for the moment the Go code is adapted to the circuit and when an Exit
with Amount>0 & EffectiveAmount=0, it will be added to the Leaf of the
Exit MerkleTree.
There are 2 ways to interpret an Exit transaction with Amount=0:
`A`. Not adding a new Leaf to the ExitTree, so not modifying the Exit
MerkleRoot
`B`. Adding a new Leaf to the ExitTree, with Balance=0, which modifies
the Exit MerkleRoot
Currently the [Circuits](https://github.com/hermeznetwork/circuits) are
doing approach `A`, and the
[hermez-node](https://github.com/hermeznetwork/hermez-node) is doing the
approach `B`. The idea of this commit, is to use approach `A` also in
the hermez-node.
- Add AmountF new parameter to ZKInputs
- Update ZKInputs test vectors with float40 checked with circom circuits
- Small fix at eth/rollup.go with lenL1L2TxsBytes with new length of
Float40
- KVDB/StateDB
- Pass config parameters in a Config type instead of using many
arguments in constructor.
- Add new parameter `NoLast` which disables having an opened DB with a
checkpoint to the last batchNum for thread-safe reads. Last will be
disabled in the StateDB used by the TxSelector and BatchBuilder.
- Add new parameter `NoGapsCheck` which skips checking gaps in the list
of checkpoints and returning errors if there are gaps. Gaps check
will be disabled in the StateDB used by the TxSelector and
BatchBuilder, because we expect to have gaps when there are multiple
coordinators forging (slots not forged by our coordinator will leave
gaps).
Fixes the case where there is a PoolTxs of type Exit with fee 0 for a
TokenID. Before this commit the Coordinator was not sending the
accumulated fee (which has value 0) to the Coordinator account for that
TokenID, with this commit the Coordinator always sends the accumulated
fee even when the value is 0 to match the hermez circom circuits
behaviour.
Also added a test to check the values and that also sends the proof to a
real proof server to check that can generate a valid proof.
Last db view is an opened pebble db which always contains a checkpoint from the
last batch. Methods to access this last batch are thread safe so that views of
the last checkpoint can be made anywhere and with a consistent view of the
state.
PoolL2Tx.Info contains information about the status & State of the
transaction. As for example, if the Tx has not been selected in the last
batch due not enough Balance at the Sender account, this reason would
appear at this parameter.
This will help the client (wallet, batchexplorer, etc) to reason why a
L2Tx is not selected in the forged batches.
- TxSelector
- Add check enough funds on sender at TxSelector and don't
include the tx in the selection
- TxProcessor
- Add checks that the balance when substracted the
amount/amount+fee never goes below 0
fix#502
Remove increment in exit tree leaf nonce when there are multiple exits for the
same account in the same batch.
Add a test to verify the correct implementation of exit leafs caused by
multiple exits.
- Test that two exits for the same account in the same batch should be merged
into one exitInfo with the accumulated balance of both exits, in the
txprocessor output
- Add tests connecting TxSelector, BatchBuilder, ZKInputs, ProofServer
- Added test to check that the signatures of the PoolL2Txs from the L2DB
pool can be verified, to check that the parameters of the PoolL2Tx match
the original parameters signed before inserting them into the L2DB
- TxProcessor move txCompressedDataEmpty inside the if of tp.zki!=nil
- Abstract generation of transactions for ZKInput tests to avoid code
repetition
- used at txprocessor & test/zkproof tests
- Til
- update Til users BJJ key generation for better js tests
compatibility
- Common
- PoolL2Tx to L2Tx use AuxToIdx in case that ToIdx is 0
- Update ZKInputs parameter descriptions
- TxProcessor
- Fix AccumulatedFees in case that there is no CoordIdx for that token
- Fix zki.NewExit usage
- Use same order for AccumulatedFees & FeeIdx & FeePlanTokens
- Add Nonce usage to ExitLeafs
- Update TestZKInput6 and check its compatibility with circom Hermez
circuits
- Node
- Load Coordinator Fee Account from config
- Sign the AccountCreationMsg to generate the
AccountCreationAuth
- Resolve#465
- Wait for synchronizer termination before stopping coordinator to avoid
getting stuck when closing in the following case:
- The coordinator stops reading the synchronizer msg channel,
and the node gets stuck sending a message to that channel.
- Common
- Move account creation auth signature code to common.
- Update RollupConstInputSHAConstantBytes
- Coordinator
- Set batch status in the debug file
- Propagate SCVariables on reorg
- Pipeline: Get SCVariables updates
- Resolve#457
- Fix off by 1 error in Pipeline.shouldL1L2Batch() (which shouldn't have
caused any problem, but it was not right)
- KVDB
- Delete future checkpoints after reset
- In `ResetFromSynchronizer`, remove all checkpoints first, and follow
the same logic as `reset()`.
- Cli
- Add command to generate a BabyJubJub key pair (to be used for the
Coordinator Fee Account)
- Node
- Adjust example config `Coordinator.L1BatchTimeoutPerc` to avoid
missing the L1Batch deadline with the following setup:
- a block is mined every 2 seconds
- single proof server that takes 2 seconds to calculate a proof
- TxProcessor
- Close temporary pebble used for the exit tree after usage.
- Resolve#463
- Til
- tests that were using `til.SetBlockchainMinimumFlow0` have been
updated, as now the L1CoordinatorTxs are placed simulating TxSelector
creation (when needed, not before)
- Add `EthSk` to `tc.User` to allow to sign `AccoutCreationAuths` at
the tests flows
- TxProcessor
- for L2Txs get TokenID from tx.FromIdx Account.TokenID instead than
- update tests vectors for new values
from tx.TokenID (which not always is set)
- Common
- move TxIDsFromL2Txs & TxIDsFromPoolL2Txs from `coordinator` to
`common` to allow usage from other packages
- StateDB
- Update GetIdxByEthAddrBJJ to return ErrToIdxNotFound when idx not found, so can be checked at upper levels
- TxSelector
- rm CoordIdxsDB that is no longer needed (also related methods)
- add `getCoordIdx` method to get the Coordinator Idx for a given TokenID
- Update coordinator account creation related to new TokenIDs from L2Txs
- Reorganize GetL1L2TxSelection
- return CoordIdxs used in the selection
- Update go-merkletree version which avoids marshaling Siblings to json
with 'null' value in case of empty array
- Remove MaxL1CoordTxs parameter from the TxSelector because this parameter
doesn't exist
- Use ChainID in l1tx byte encoding
- Pass txprocessor configuration to batch builder via an existing parameter
Jordi Baylina
arnaucube
Eduard S