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pezkuwi-subxt/substrate/frame/contracts/CHANGELOG.md
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Alexander Theißen 4bf0387237 contracts: Release as v3.0.0 and add reserved field to ContractInfoOf (#8175)
* contracts: Update README

* contracts: Add CHANGELOG.md

* contracts: Bump version to v3.0.0 and allow publish

* Typos

Co-authored-by: Andrew Jones <ascjones@gmail.com>

* Improve wording in the changelog

* contracts: Add reserved field to ContractInfoOf for future proofing

* also bump frame-benchmarking

* update lockfile

Co-authored-by: Andrew Jones <ascjones@gmail.com>
Co-authored-by: Benjamin Kampmann <ben@parity.io>
2021-02-25 17:04:48 +01:00

3.2 KiB

Changelog

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.

The semantic versioning guarantees cover the interface to the substrate runtime which includes this pallet as a dependency. This module will also add storage migrations whenever changes require it. Stability with regard to offchain tooling is explicitly excluded from this guarantee: For example adding a new field to an in-storage data structure will require changes to frontends to properly display it. However, those changes will still be regarded as a minor version bump.

The interface provided to smart contracts will adhere to semver with one exception: Even major version bumps will be backwards compatible with regard to already deployed contracts. In other words: Upgrading this pallet will not break pre-existing contracts.

[v3.0.0]

This version constitutes the first release that brings any stability guarantees (see above).

Added

  • Emit an event when a contract terminates (self-destructs). 1

  • Charge rent for code stored on the chain in addition to the already existing rent that is payed for data storage. 1

  • Allow the runtime to configure per storage item costs in addition to the already existing per byte costs. 1

  • Contracts are now deleted lazily so that the user who removes a contract does not need to pay for the deletion of the contract storage. 1

  • Allow runtime authors to define chain extensions in order to provide custom functionality to contracts. 1 2

  • Proper weights which are fully automated by benchmarking. 1 2 3

Changes

  • Collect the rent for one block during instantiation. 1

  • Instantiation takes a salt argument to allow for easier instantion of the same code by the same sender. 1

  • Improve the information returned by the contracts_call RPC. 1

  • Simplify the node configuration necessary to add this module. 1

Fixed

  • Consider the code size of a contract in the weight that is charged for loading a contract from storage. 1

  • Fix possible overflow in storage size calculation 1

  • Cap the surcharge reward that can be claimed. 1

  • Fix a possible DoS vector where contracts could allocate too large buffers. 1