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pezkuwi-subxt/substrate/frame/contracts/CHANGELOG.md
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Alexander Theißen 1ac95b6ba6 contracts: Move Schedule from Storage to Config (#8773) 
* Move `Schedule` from Storage to Config

* Updated CHANGELOG

* Fix nits from review

* Fix migration

* Print the debug buffer as tracing message

* Use `debug` instead of `trace` and update README

* Add additional assert to test

* Rename `schedule_version` to `instruction_weights_version`

* Fixed typo

* Added more comments to wat fixtures

* Add clarification for the `debug_message` field
2021-05-13 19:56:11 +00:00

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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.

[Unreleased]

Added

  • Replaced seal_println with seal_debug_message which allows output to an RPC client. 1

  • Add new instantiate RPC that allows clients to dry-run contract instantiation. 1

  • Make storage and fields of Schedule private to the crate. 1

  • Add new version of seal_random which exposes additional information. 1

  • Add seal_rent_params contract callable function. 1

[v3.0.0] 2021-02-25

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

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