Piotr Mikołajczyk
d8d90a82a7
# Description This PR introduces two changes: - the previous `Tracing` trait has been modified to accept contract address instead of code hash (seems to be way more convenient) - a new trait `CallInterceptor` that allows intercepting contract calls; in particular the default implementation for `()` will just proceed in a standard way (after compilation optimizations, there will be no footprint of that); however, implementing type might decide to mock invocation and return `ExecResult` instead Note: one might try merging `before_call` and `intercept_call`. However, IMHO this would be bad, since it would mix two completely different abstractions - tracing without any effects and actual intervention into execution process. This will unblock working on mocking contracts utility in drink and similar tools (https://github.com/Cardinal-Cryptography/drink/issues/33) # Checklist - [x] My PR includes a detailed description as outlined in the "Description" section above - [ ] My PR follows the [labeling requirements](https://github.com/paritytech/polkadot-sdk/blob/master/docs/CONTRIBUTING.md#process) of this project (at minimum one label for `T` required) - [x] I have made corresponding changes to the documentation (if applicable) - [x] I have added tests that prove my fix is effective or that my feature works (if applicable)
Substrate
Substrate is a next-generation framework for blockchain innovation 🚀.
Getting Started
Head to docs.substrate.io and follow the installation
instructions. Then try out one of the tutorials. Refer to the Docker
instructions to quickly run Substrate, Substrate Node Template, Subkey, or to build a chain spec.
Community & Support
Join the highly active and supportive community on the Substrate Stack Exchange to ask questions about use and problems you run into using this software. Please do report bugs and issues here for anything you suspect requires action in the source.
Contributions & Code of Conduct
Please follow the contributions guidelines as outlined in
docs/CONTRIBUTING.md. In all
communications and contributions, this project follows the Contributor Covenant Code of
Conduct.
Security
The security policy and procedures can be found in
docs/SECURITY.md.
License
- Substrate Primitives (
sp-*), Frame (frame-*) and the pallets (pallets-*), binaries (/bin) and all other utilities are licensed under Apache 2.0. - Substrate Client (/client/*/sc-*) is licensed under GPL v3.0 with a classpath linking exception.
The reason for the split-licensing is to ensure that for the vast majority of teams using Substrate to create feature-chains, then all changes can be made entirely in Apache2-licensed code, allowing teams full freedom over what and how they release and giving licensing clarity to commercial teams.
In the interests of the community, we require any deeper improvements made to Substrate's core logic (e.g. Substrate's internal consensus, crypto or database code) to be contributed back so everyone can benefit.