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Core Components Changelog

All notable changes to the core components will be documented in this file.

Unreleased

Removed

  • (api_server): REST API v1.0.

Changed

  • (loadtest): zksync_fee has been moved to [main_wallet] section from the [network] section.
  • (EthWatcher): added processing of events about adding new tokens to the contract.
  • A special balancer for FeeTicker was replaced with a generic balancer.
  • (eth_client): web3 field was made private in ETHDirectClient. testkit and loadtest don't use it directly now.
  • (api_server): Make submit_txs_batch send only one signature request.
  • Fast withdrawals now can trigger aggregated block execution.
  • Replaced anyhow errors with typed errors in lib/state, lib/crypto and lib/types.
  • (fee-ticker): Batch fee now includes zkp_fee and gas_fee.

Added

  • (loadtest): Added zksync_fee option into the [scenario] section to set fee for each scenario individually, added fee_token option into the [main_wallet] section to set token that is used to pay fees for the main wallet operations.
  • (TokenHandler): Module for automatically adding a token to the database based on the received Ethereum event (NewTokenEvent).
  • (Notifier): Module for sending notifications to third-party services.
  • (eth_client): Added get_tx, create_contract methods to EthereumGateway, get_web3_transport method to ETHDirectClient.
  • (api_server): Support for accounts that don't have to pay fees (e.g. network service accounts) was added.
  • Added BlockMetadata structure and corresponding table to track block data that is not related to protocol.
  • (block_revert): CLI that calls revertBlocks smart contract function and updates the database respectively.
  • (api_server): Added REST API v0.2.
  • (api_client): Client for REST API v0.2.
  • (api_types): Crate for storing types that are used in API.
  • Added hashes for batches and additional hashes for priority operations.
  • Added ForcedExit fee type to REST API v0.2 and JSON RPC API.

Fixed

  • (zksync_api): Internal error with tokens not listed on CoinGecko.
  • Fix wrong block info cache behavior in the api_server.
  • Bug with gas price limit being used instead of average gas price when storing data to DB in gas adjuster.
  • timeout in ETH sender main loop was replaced with tokio::time::delay_for.

Release 2021-02-19

Removed

Changed

  • The token name is now set for each scenario separately instead of the network section of the loadtest configuration.
  • Rejected transactions are now stored in the database for 2 weeks only.

Added

  • Added a stressing dev fee ticker scenario to the loadtest.
  • Added a --sloppy mode to the dev-fee-ticker-server to simulate bad networks with the random delays and fails.
  • Added forced_exit_requests functionality, which allows users to pay for ForcedExits from L1. Note that a few env variables were added that control the behaviour of the tool.
  • Possibility to use CREATE2 ChangePubKey and Transfer in a single batch.

Fixed

  • Bug with the assignment of new account ids in the state.

Release 2021-02-02

Removed

  • MetricsCounter structure was removed because it is not used.
  • The limit on the number of withdrawals in the block.

Changed

  • Type aliases (TokenId, AccountId, Nonce, BlockNumber, PriorityOpId, EthBlockId) are replaced with wrapper structures.
  • prometheus_exporter was made a library to be used by several crates.
  • prover_run_for_next_commit function uses a parameterized timeout instead of a hard-coded one.
  • (storage): action_type column type in db is changed from text to enum for optimization.
  • (FeeTicker): Increased gas price estimate for transaction.
  • (loadtest): Scenario execution was made parallel.
  • Increased completeWithdrawal gas limit, that decreased the chance of the users to face the out-of-gas error

Added

  • prometheus_exporter is launched by every microservice.
  • tokens_acceptable_for_fees endpoint that returns the list of tokens acceptable for fees was added to REST API v0.1.

Fixed

  • (FeeTicker): Performance for getting the batch fee was heavily optimized.

Release 2021-01-12

Changed

  • gen_token_add_contract crate is rewritten in ts.
  • Metrics were added to some functions from lib/storage.
  • get_tx_by_hash function was simplified.

Added

  • closest_greater_or_eq_packable_fee_amount and closest_greater_or_eq_packable_token_amount functions. test_float_conversions test was expanded.
  • Loadtest scenario for stressing transaction batches

Removed

  • Sequential Sparse Merkle Tree implementation was removed because it has been replaced by the parallel implementation.

Fixed

  • Bug with to_float function. Now, it really rounds to the closest less or equal float number.
  • Wrong index type used in the database causing some queries to take too much time.

Prior to 2020-12-23

Added

  • A possibility to get an Ethereum tx hash for withdrawal operation.
  • Support for non-standard Ethereum signatures.

Changed

  • Robustness of the fee ticker's API interacting module was increased.
  • Blocks that contain withdraw operations are sealed faster.
  • eth_sender module now can be disabled.
  • Transfer to zero address (0x00..00) is now forbidden in zkSync.
  • WebSocket server now uses more threads for handling incoming requests.

Fixed

  • Bug with delay between receiving a job and starting sending heartbeats.