Change Log

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

[Unreleased]

Description of the upcoming release here.

Added

#1671: Added a new Merklized blueprint that maintains the binary Merkle tree over the storage data. It supports only the insertion of the objects without removing them.

Changed

#1671: The logic related to the FuelBlockIdsToHeights is moved to the off-chain worker.
#1663: Reduce the punishment criteria for mempool gossipping.
#1658: Removed Receipts table. Instead, receipts are part of the TransactionStatuses table.
#1640: Upgrade to fuel-vm 0.45.0.
#1635: Move updating of the owned messages and coins to off-chain worker.
#1650: Add api endpoint for getting estimates for future gas prices
#1649: Add api endpoint for getting latest gas price
#1600: Upgrade to fuel-vm 0.45.0
#1633: Notify services about importing of the genesis block.
#1625: Making relayer independent from the executor and preparation for the force transaction inclusion.
#1613: Add api endpoint to retrieve a message by its nonce.
#1612: Use AtomicView in all services for consistent results.
#1597: Unify namespacing for libp2p modules
#1591: Simplify libp2p dependencies and not depend on all sub modules directly.
#1590: Use AtomicView in the TxPool to read the state of the database during insertion of the transactions.
#1587: Use BlockHeight as a primary key for the FuelsBlock table.
#1585: Let NetworkBehaviour macro generate FuelBehaviorEvent in p2p
#1579: The change extracts the off-chain-related logic from the executor and moves it to the GraphQL off-chain worker. It creates two new concepts - Off-chain and On-chain databases where the GraphQL worker has exclusive ownership of the database and may modify it without intersecting with the On-chain database.
#1577: Moved insertion of sealed blocks into the BlockImporter instead of the executor.
#1574: Penalizes peers for sending invalid responses or for not replying at all.
#1601: Fix formatting in docs and check that cargo doc passes in the CI.
#1636: Add more docs to GraphQL DAP API.

Breaking

#1671: The GraphQL API uses block height instead of the block id where it is possible. The transaction status contains block_height instead of the block_id.
#1675: Simplify GQL schema by disabling contract resolvers in most cases, and just return a ContractId scalar instead.
#1658: Receipts are part of the transaction status. Removed reason from the TransactionExecutionResult::Failed. It can be calculated based on the program state and receipts. Also, it is not possible to fetch receipts from the Transaction directly anymore. Instead, you need to fetch status and its receipts.
#1646: Remove redundant receipts from queries.
#1639: Make Merkle metadata, i.e. SparseMerkleMetadata and DenseMerkleMetadata type version-able enums
#1632: Make Message type a version-able enum
#1631: Modify api endpoint to dry run multiple transactions.
#1629: Use a separate database for each data domain. Each database has its own folder where data is stored.
#1628: Make CompressedCoin type a version-able enum
#1616: Make BlockHeader type a version-able enum
#1614: Use the default consensus key regardless of trigger mode. The change is breaking because it removes the --dev-keys argument. If the debug flag is set, the default consensus key will be used, regardless of the trigger mode.
#1596: Make Consensus type a version-able enum
#1593: Make Block type a version-able enum
#1576: The change moves the implementation of the storage traits for required tables from fuel-core to fuel-core-storage crate. The change also adds a more flexible configuration of the encoding/decoding per the table and allows the implementation of specific behaviors for the table in a much easier way. It unifies the encoding between database, SMTs, and iteration, preventing mismatching bytes representation on the Rust type system level. Plus, it increases the re-usage of the code by applying the same blueprint to other tables.

It is a breaking PR because it changes database encoding/decoding for some tables.

StructuredStorage

The change adds a new type StructuredStorage. It is a wrapper around the key-value storage that implements the storage traits(StorageInspect, StorageMutate, StorageRead, etc) for the tables with blueprint. This blueprint works in tandem with the TableWithBlueprint trait. The table may implement TableWithBlueprint specifying the blueprint, as an example:
```
impl TableWithBlueprint for ContractsRawCode {
    type Blueprint = Plain<Raw, Raw>;

    fn column() -> Column {
        Column::ContractsRawCode
    }
}
```
It is a definition of the blueprint for the ContractsRawCode table. It has a plain blueprint meaning it simply encodes/decodes bytes and stores/loads them into/from the storage. As a key codec and value codec, it uses a Raw encoding/decoding that simplifies writing bytes and loads them back into the memory without applying any serialization or deserialization algorithm.

If the table implements TableWithBlueprint and the selected codec satisfies all blueprint requirements, the corresponding storage traits for that table are implemented on the StructuredStorage type.

Codecs

Each blueprint allows customizing the key and value codecs. It allows the use of different codecs for different tables, taking into account the complexity and weight of the data and providing a way of more optimal implementation.

That property may be very useful to perform migration in a more easier way. Plus, it also can be a no_std migration potentially allowing its fraud proving.

An example of migration:
```
/// Define the table for V1 value encoding/decoding.
impl TableWithBlueprint for ContractsRawCodeV1 {
    type Blueprint = Plain<Raw, Raw>;

    fn column() -> Column {
        Column::ContractsRawCode
    }
}

/// Define the table for V2 value encoding/decoding.
/// It uses `Postcard` codec for the value instead of `Raw` codec.
///
/// # Dev-note: The columns is the same.
impl TableWithBlueprint for ContractsRawCodeV2 {
    type Blueprint = Plain<Raw, Postcard>;

    fn column() -> Column {
        Column::ContractsRawCode
    }
}

fn migration(storage: &mut Database) {
    let mut iter = storage.iter_all::<ContractsRawCodeV1>(None);
    while let Ok((key, value)) = iter.next() {
        // Insert into the same table but with another codec.
        storage.storage::<ContractsRawCodeV2>().insert(key, value);
    }
}
```
Structures

The blueprint of the table defines its behavior. As an example, a Plain blueprint simply encodes/decodes bytes and stores/loads them into/from the storage. The SMT blueprint builds a sparse merkle tree on top of the key-value pairs.

Implementing a blueprint one time, we can apply it to any table satisfying the requirements of this blueprint. It increases the re-usage of the code and minimizes duplication.

It can be useful if we decide to create global roots for all required tables that are used in fraud proving.
```
impl TableWithBlueprint for SpentMessages {
    type Blueprint = Plain<Raw, Postcard>;

    fn column() -> Column {
        Column::SpentMessages
    }
}
                 |
                 |
                \|/

impl TableWithBlueprint for SpentMessages {
    type Blueprint =
        Sparse<Raw, Postcard, SpentMessagesMerkleMetadata, SpentMessagesMerkleNodes>;

    fn column() -> Column {
        Column::SpentMessages
    }
}
```
Side changes

iter_all

The iter_all functionality now accepts the table instead of K and V generics. It is done to use the correct codec during deserialization. Also, the table definition provides the column.

Duplicated unit tests

The fuel-core-storage crate provides macros that generate unit tests. Almost all tables had the same test like get, insert, remove, exist. All duplicated tests were moved to macros. The unique one still stays at the same place where it was before.

StorageBatchMutate

Added a new StorageBatchMutate trait that we can move to fuel-storage crate later. It allows batch operations on the storage. It may be more performant in some cases.
#1573: Remove nested p2p request/response encoding. Only breaks p2p networking compatibility with older fuel-core versions, but is otherwise fully internal.

[Version 0.22.1]

Fixed

#1664: Fixed long database initialization after restart of the node by setting limit to the WAL file.

[Version 0.22.0]

Added

#1515: Added support of --version command for fuel-core-keygen binary.
#1504: A Success or Failure variant of TransactionStatus returned by a query now contains the associated receipts generated by transaction execution.

Breaking

#1531: Make fuel-core-executor no_std compatible. It affects the fuel-core crate because it uses the fuel-core-executor crate. The change is breaking because of moved types.
#1524: Adds information about connected peers to the GQL API.

Changed

#1517: Changed default gossip heartbeat interval to 500ms.
#1520: Extract executor into fuel-core-executor crate.

Fixed

Breaking

#1536: The change fixes the contracts tables to not touch SMT nodes of foreign contracts. Before, it was possible to invalidate the SMT from another contract. It is a breaking change and requires re-calculating the whole state from the beginning with new SMT roots.
#1542: Migrates information about peers to NodeInfo instead of ChainInfo. It also elides information about peers in the default node_info query.

[Version 0.21.0]

This release focuses on preparing fuel-core for the mainnet environment:

Most of the changes improved the security and stability of the node.
The gas model was reworked to cover all aspects of execution.
The benchmarking system was significantly enhanced, covering worst scenarios.
A new set of benchmarks was added to track the accuracy of gas prices.
Optimized heavy operations and removed/replaced exploitable functionality.

Besides that, there are more concrete changes:

Unified naming conventions for all CLI arguments. Added dependencies between related fields to avoid misconfiguration in case of missing arguments. Added --debug flag that enables additional functionality like a debugger.
Improved telemetry to cover the internal work of services and added support for the Pyroscope, allowing it to generate real-time flamegraphs to track performance.
Improved stability of the P2P layer and adjusted the updating of reputation. The speed of block synchronization was significantly increased.
The node is more stable and resilient. Improved DoS resistance and resource management. Fixed critical bugs during state transition.
Reworked the Mint transaction to accumulate the fee from block production inside the contract defined by the block producer.

FuelVM received a lot of safety and stability improvements:

The audit helped identify some bugs and errors that have been successfully fixed.
Updated the gas price model to charge for resources used during the transaction lifecycle.
Added no_std and 32 bit system support. This opens doors for fraud proving in the future.
Removed the ChainId from the PredicateId calculation, allowing the use of predicates cross-chain.
Improvements in the performance of some storage-related opcodes.
Support the ECAL instruction that allows adding custom functionality to the VM. It can be used to create unique rollups or advanced indexers in the future.
Support of transaction policies provides additional safety for the user. It also allows the implementation of a multi-dimensional price model in the future, making the transaction execution cheaper and allowing more transactions that don't affect storage.
Refactored errors, returning more detailed errors to the user, simplifying debugging.

Added

#1503: Add gtf opcode sanity check.
#1502: Added price benchmark for vm_initialization.
#1501: Add a CLI command for generating a fee collection contract.
#1492: Support backward iteration in the RocksDB. It allows backward queries that were not allowed before.
#1490: Add push and pop benchmarks.
#1485: Prepare rc release of fuel core v0.21
#1476: Add the majority of the "other" benchmarks for contract opcodes.
#1473: Expose fuel-core version as a constant
#1469: Added support of bloom filter for RocksDB tables and increased the block cache.
#1465: Improvements for keygen cli and crates
#1642: Added benchmark to measure the performance of contract state and contract ID calculation; use for gas costing.
#1457: Fixing incorrect measurement for fast(µs) opcodes.
#1456: Added flushing of the RocksDB during a graceful shutdown.
#1456: Added more logs to track the service lifecycle.
#1453: Add the majority of the "sanity" benchmarks for contract opcodes.
#1452: Added benchmark to measure the performance of contract root calculation when utilizing the maximum contract size; used for gas costing of contract root during predicate owner validation.
#1449: Fix coin pagination in e2e test client.
#1447: Add timeout for continuous e2e tests
#1444: Add "sanity" benchmarks for memory opcodes.
#1437: Add some transaction throughput tests for basic transfers.
#1436: Add a github action to continuously test beta-4.
#1433: Add "sanity" benchmarks for flow opcodes.
#1432: Add a new --api-request-timeout argument to control TTL for GraphQL requests.
#1430: Add "sanity" benchmarks for crypto opcodes.
#1426 Split keygen into a create and a binary.
#1419: Add additional "sanity" benchmarks for arithmetic op code instructions.
#1411: Added WASM and no_std compatibility.
#1405: Use correct names for service metrics.
#1400: Add releasy beta to fuel-core so that new commits to fuel-core master triggers fuels-rs.
#1371: Add new client function for querying the MessageStatus for a specific message (by Nonce).
#1356: Add peer reputation reporting to heartbeat code.
#1355: Added new metrics related to block importing, such as tps, sync delays etc.
#1339: Adds baseAssetId to FeeParameters in the GraphQL API.
#1331: Add peer reputation reporting to block import code.
#1324: Added pyroscope profiling to fuel-core, intended to be used by a secondary docker image that has debug symbols enabled.
#1309: Add documentation for running debug builds with CLion and Visual Studio Code.
#1308: Add support for loading .env files when compiling with the env feature. This allows users to conveniently supply CLI arguments in a secure and IDE-agnostic way.
#1304: Implemented submit_and_await_commit_with_receipts method for FuelClient.
#1286: Include readable names for test cases where missing.
#1274: Added tests to benchmark block synchronization.
#1263: Add gas benchmarks for ED19 and ECR1 instructions.

Changed

#1512: Internally simplify merkle_contract_state_range.
#1507: Updated chain configuration to be ready for beta 5 network. It includes opcode prices from the latest benchmark and contract for the block producer.
#1477: Upgraded the Rust version used in CI and containers to 1.73.0. Also includes associated Clippy changes.
#1469: Replaced usage of MemoryTransactionView by Checkpoint database in the benchmarks.
#1468: Bumped version of the fuel-vm to v0.40.0. It brings some breaking changes into consensus parameters API because of changes in the underlying types.
#1466: Handling overflows during arithmetic operations.
#1460: Change tracking branch from main to master for releasy tests.
#1454: Update gas benchmarks for opcodes that append receipts.
#1440: Don't report reserved nodes that send invalid transactions.
#1439: Reduced memory BMT consumption during creation of the header.
#1434: Continue gossiping transactions to reserved peers regardless of gossiping reputation score.
#1408: Update gas benchmarks for storage opcodes to use a pre-populated database to get more accurate worst-case costs.
#1399: The Relayer now queries Ethereum for its latest finalized block instead of using a configurable "finalization period" to presume finality.
#1397: Improved keygen. Created a crate to be included from forc plugins and upgraded internal library to drop requirement of protoc to build
#1395: Add DependentCost benchmarks for k256, s256 and mcpi instructions.
#1393: Increase heartbeat timeout from 2 to 60 seconds, as suggested in this issue.
#1392: Fixed an overflow in message_proof.
#1390: Up the ethers version to 2 to fix an issue with tungstenite.
#1383: Disallow usage of log crate internally in favor of tracing crate.
#1380: Add preliminary, hard-coded config values for heartbeat peer reputation, removing todo.
#1377: Remove DiscoveryEvent and use KademliaEvent directly in DiscoveryBehavior.
#1366: Improve caching during docker builds in CI by replacing gha
#1358: Upgraded the Rust version used in CI to 1.72.0. Also includes associated Clippy changes.
#1349: Updated peer-to-peer transactions API to support multiple blocks in a single request, and updated block synchronization to request multiple blocks based on the configured range of headers.
#1342: Add error handling for P2P requests to return None to requester and log error.
#1318: Modified block synchronization to use asynchronous task execution when retrieving block headers.
#1314: Removed types::ConsensusParameters in favour of fuel_tx:ConsensusParameters.
#1302: Removed the usage of flake and building of the bridge contract ABI. It simplifies the maintenance and updating of the events, requiring only putting the event definition into the codebase of the relayer.
#1293: Parallelized the estimate_predicates endpoint to utilize all available threads.
#1270: Modify the way block headers are retrieved from peers to be done in batches.

Breaking

#1506: Added validation of the coin's fields during block production and validation. Before, it was possible to submit a transaction that didn't match the coin's values in the database, allowing printing/using unavailable assets.
#1491: Removed unused request and response variants from the Gossipsub implementation, as well as related definitions and tests. Specifically, this removes gossiping of ConsensusVote and NewBlock events.
#1472: Upgraded fuel-vm to v0.42.0. It introduces transaction policies that changes layout of the transaction. FOr more information check the v0.42.0 release.
#1470: Divide DependentCost into "light" and "heavy" operations.
#1464: Avoid possible truncation of higher bits. It may invalidate the code that truncated higher bits causing different behavior on 32-bit vs. 64-bit systems. The change affects some endpoints that now require lesser integers.
#1432: All subscriptions and requests have a TTL now. So each subscription lifecycle is limited in time. If the subscription is closed because of TTL, it means that you subscribed after your transaction had been dropped by the network.
#1407: The recipient is a ContractId instead of Address. The block producer should deploy its contract to receive the transaction fee. The collected fee is zero until the recipient contract is set.
#1407: The Mint transaction is reworked with new fields to support the account-base model. It affects serialization and deserialization of the transaction and also affects GraphQL schema.
#1407: The Mint transaction is the last transaction in the block instead of the first.
#1374: Renamed base_chain_height to da_height and return current relayer height instead of latest Fuel block height.
#1367: Update to the latest version of fuel-vm.
#1363: Change message_proof api to take nonce instead of message_id
#1355: Removed the metrics feature flag from the fuel-core crate, and metrics are now included by default.
#1339: Added a new required field called base_asset_id to the FeeParameters definition in ConsensusParameters, as well as default values for base_asset_id in the beta and dev chain specifications.
#1322: The debug flag is added to the CLI. The flag should be used for local development only. Enabling debug mode: - Allows GraphQL Endpoints to arbitrarily advance blocks. - Enables debugger GraphQL Endpoints. - Allows setting utxo_validation to false.
#1318: Removed the --sync-max-header-batch-requests CLI argument, and renamed --sync-max-get-txns to --sync-block-stream-buffer-size to better represent the current behavior in the import.
#1290: Standardize CLI args to use - instead of _.
#1279: Added a new CLI flag to enable the Relayer service --enable-relayer, and disabled the Relayer service by default. When supplying the --enable-relayer flag, the --relayer argument becomes mandatory, and omitting it is an error. Similarly, providing a --relayer argument without the --enable-relayer flag is an error. Lastly, providing the --keypair or --network arguments will also produce an error if the --enable-p2p flag is not set.
#1262: The ConsensusParameters aggregates all configuration data related to the consensus. It contains many fields that are segregated by the usage. The API of some functions was affected to use lesser types instead the whole ConsensusParameters. It is a huge breaking change requiring repetitively monotonically updating all places that use the ConsensusParameters. But during updating, consider that maybe you can use lesser types. Usage of them may simplify signatures of methods and make them more user-friendly and transparent.

Removed

Breaking

#1484: Removed --network CLI argument. Now the name of the network is fetched form chain configuration.
#1399: Removed relayer-da-finalization parameter from the relayer CLI.
#1338: Updated GraphQL client to use DependentCost for k256, mcpi, s256, scwq, swwq opcodes.
#1322: The manual_blocks_enabled flag is removed from the CLI. The analog is a debug flag.

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CHANGELOG.md

CHANGELOG.md

Change Log

[Unreleased]

Added

Changed

Breaking

StructuredStorage

Codecs

Structures

Side changes

`iter_all`

Duplicated unit tests

`StorageBatchMutate`

[Version 0.22.1]

Fixed

[Version 0.22.0]

Added

Breaking

Changed

Fixed

Breaking

[Version 0.21.0]

Added

Changed

Breaking

Removed

Breaking

Files

CHANGELOG.md

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CHANGELOG.md

File metadata and controls

Change Log

[Unreleased]

Added

Changed

Breaking

StructuredStorage

Codecs

Structures

Side changes

iter_all

Duplicated unit tests

StorageBatchMutate

[Version 0.22.1]

Fixed

[Version 0.22.0]

Added

Breaking

Changed

Fixed

Breaking

[Version 0.21.0]

Added

Changed

Breaking

Removed

Breaking

`iter_all`

`StorageBatchMutate`