Ankan
f820dc0a1f
closes https://github.com/paritytech/polkadot-sdk/issues/158. partially addresses https://github.com/paritytech/polkadot-sdk/issues/226. Instead of fragile calculation of current balance by looking at `free balance - ED`, Nomination Pool now freezes ED in the pool reward account to restrict an account from going below minimum balance. This also has a nice side effect that if ED changes, we know how much is the imbalance in ED frozen in the pool and the current required ED. A pool operator can diligently top up the pool with the deficit in ED or vice versa, withdraw the excess they transferred to the pool. ## Notable changes - New call `adjust_pool_deposit`: Allows to top up the deficit or withdraw the excess deposited funds to the pool. - Uses Fungible trait (instead of Currency trait). Since NP was not doing any locking/reserving previously, no migration is needed for this. - One time migration of freezing ED from each of the existing pools (not very PoV friendly but fine for relay chain).
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.