CHANGELOG.md

Hyperledger Burrow Changelog

Version 0.18.0

This is an extremely large release in terms of lines of code changed addressing several years of technical debt. Despite this efforts were made to maintain external interfaces as much as possible and an extended period of stabilisation has taken place on develop.

A major strand of work has been in condensing previous Monax tooling spread across multiple repos into just two. The Hyperledger Burrow repo and Bosmarmot. Burrow is now able to generate chains (replacing 'monax chains make') with 'burrow spec' and 'burrow configure'. Our 'EPM' contract deployment and testing tool, our javascript libraries, compilers, and monax-keys are avaiable in Bosmarmot (the former in the 'bos' tool). Work is underway to pull monax-keys into the Burrow project, and we will continue to make Burrow as self-contained as possible.

Features

• Substantial support for latest EVM and solidity 0.4.21+ (missing some opcodes that will be added shortly - see known issues)
• Tendermint 0.18.0
• All signing through monax-keys KeyClient connection (preparation for HSM and GPG based signing daemon)
• Address-based signing (Burrow acts as delegate when you send transact, transactAndHold, send, sendAndHold, and transactNameReg a parameter including input_account (hex address) instead of priv_key.
• Provide sequential signing when using transact family methods (above) - allowing 100s Tx per second with the same input account
• Genesis making, config making, and key generation through 'burrow spec' and 'burrow configure'
• Logging configuration language and text/template for output
• Improved CLI UX and framework (mow.cli)
• Improved configuration

Internal Improvements

• Refactored execution and provide interfaces for executor
• Segregate EVM and blockchain state to act as better library
• Panic recovery on TX execution
• Stricter interface boundaries and immutability of core objects by default
• Replace broken BlockCache with universal StateCache that doesn't write directly to DB
• All dependencies upgraded, notably: tendermint/IAVL 0.7.0
• Use Go dep instead of glide
• PubSub event hub with query language
• Heavily optimised logging
• PPROF profiling server option
• Additional tests in multiple packages including v0 RPC and concurrency-focussed test
• Use Tendermint verifier for PrivValidator
• Use monax/relic for project history
• Run bosmarmot integration tests in CI
• Update documentation
• Numerous maintainability, naming, and aesthetic code improvements

Bug fixes

• Fix memory leak in BlockCache
• Fix CPU usage in BlockCache
• Fix SIGNEXTEND for negative numbers
• Fix multiple execution level panics
• Make Transactor work during tendermint recheck

Known issues

• Documentation rot - some effort has been made to update documentation to represent the current state but in some places it has slipped help can be found (and would be welcomed) on: Hyperledger Burrow Chat
• Missing support for: RETURNDATACOPY and RETURNDATASIZE https://github.com/hyperledger/burrow/issues/705 (coming very soon)
• Missing support for: INVALID https://github.com/hyperledger/burrow/issues/705 (coming very soon)
• Missing support for: REVERT https://github.com/hyperledger/burrow/issues/600 (coming very soon)

Version 0.17.1

Minor tweaks to docker build file

Version 0.17.0

This is a service release with some significant ethereum/solidity compatibility improvements and new logging features. It includes:

• Upgrade to use Tendermint v0.9.2
• Implemented dynamic memory assumed by the EVM bytecode produce by solidity, fixing various issues.
• Logging sinks and configuration - providing a flexible mechanism for configuring log flows and outputs see logging section in readme. Various other logging enhancements.
• Fix event unsubscription
• Remove module-specific versioning
• Rename suicide to selfdestruct
• SNative tweaks

Known issues:

• SELFDESTRUCT opcode causes a panic when an account is removed. A fix was produced but was reverted pending investigation of a possible regression.

Version 0.16.3

This release adds an stop-gap fix to the Transact method so that it never transfers value with the CallTx is generates.

We hard-code amount = fee so that no value is transferred regardless of fee sent. This fixes an invalid jump destination error arising from transferring value to non-payable functions with newer versions of solidity. By doing this we can resolve some issues with users of the v0 RPC without making a breaking API change.

Version 0.16.2

This release finalises our accession to the Hyperledger project and updates our root package namespace to github.com/hyperledger/burrow.

It also includes a bug fix for rpc/V0 so that BroadcastTx can accept any transaction type and various pieces of internal clean-up.

Version 0.16.1

This release was an internal rename to 'Burrow' with some minor other attendant clean up.

Version 0.16.0

This is a consolidation release that fixes various bugs and improves elements of the architecture across the Monax Platform to support a quicker release cadence.

Features and improvements (among others)

• pull-510 upgrade consensus engine to Tendermint v0.8.0

• pull-507 use sha3 for snative addresses for future-proofing

• pull-506 alignment and consolidation for genesis and config between tooling and chains

• pull-504 relicense eris-db to Apache 2.0

• pull-500 introduce more strongly types secure native contracts

• pull-499 introduce word256 and remove dependency on tendermint/go-common

• pull-493 re-introduce GenesisTime in GenesisDoc

• Logging system overhauled based on the central logging interface of go-kit log. Configuration lacking in this release but should be in 0.16.1. Allows powerful routing, filtering, and output options for better operations and increasing the observability of an eris blockchain. More to follow.

• Genesis making is improved and moved into eris-db.

• Config templating is moved into eris-db for better synchronisation of server config between the consumer of it (eris-db) and the producers of it (eris cli and other tools).

• Some documentation updates in code and in specs.

• pull-462 Makefile added to capture conventions around building and testing and replicate them across different environments such as continuous integration systems.

Bugfixes (among others)

• pull-516 Organize and add unit tests for rpc/v0
• pull-453 Fix deserialisation for BroadcastTx on rpc/v0
• pull-476 patch EXTCODESIZE for native contracts as solc ^v0.4 performs a safety check for non-zero contract code
• pull-468 correct specifications for params on unsubscribe on rpc/tendermint
• pull-465 fix divergence from JSON-RPC spec for Response object
• pull-366 correction to circle ci script
• pull-379 more descriptive error message for eris-client

Version 0.15.0

This release was elided to synchronise release versions with tooling

Version 0.14.0

This release was elided to synchronise release versions with tooling

Version 0.13.0

This release was elided to synchronise release versions with tooling

Version 0.12.0

This release marks the start of Eris-DB as the full permissioned blockchain node of the Eris platform with the Tendermint permissioned consensus engine. This involved significant refactoring of almost all parts of the code, but provides a solid foundation to build the next generation of advanced permissioned smart contract blockchains.

Many changes are under the hood but here are the main externally visible changes:

• Features and improvements

  • Upgrade to Tendermint 0.6.0 in-process consensus
  • Support DELEGATECALL opcode in Ethereum Virtual Machine (important for solidity library calls)
  • ARM support
  • Docker image size reduced
  • Introduction of eris-client companion library for interacting with eris:db
  • Improved single configuration file for all components written by eris-cm
  • Allow multiple event subscriptions from same host under rpc/tendermint

• Tool changes

  • Use glide instead of godeps for dependencies

• Testing

  • integration tests over simulated RPC calls
  • significantly improved unit tests
  • the ethereum virtual machine and the consensus engine are now top-level components and are exposed to continuous integration tests

• Bugfixes (incomplete list)

  • [EVM] Fix calculation of child CALL gaslimit (allowing solidity library calls to work properly)
  • [RPC/v0] Fix blocking event subscription in transactAndHold (preventing return in Javascript libraries)
  • [Blockchain] Fix getBlocks to respect block height cap.