Muharem
5ce04514eb
Introduces a swap implementation that allows the exchange of a credit (aka Negative Imbalance) of one asset for a credit of another asset. This is particularly useful when a credit swap is required but may not have sufficient value to meet the ED constraint, hence cannot be deposited to temp account before. An example use case is when XCM fees are paid using an asset held in the XCM executor registry and has to be swapped for native currency. Additional Updates: - encapsulates the existing `Swap` trait impl within a transactional context, since partial storage mutation is possible when an error occurs; - supplied `Currency` and `Assets` impls must be implemented over the same `Balance` type, the `AssetBalance` generic type is dropped. This helps to avoid numerous type conversion and overflow cases. If those types are different it should be handled outside of the pallet; - `Box` asset kind on a pallet level, unbox on a runtime level - here [why](https://substrate.stackexchange.com/questions/10039/boxed-argument-of-a-dispatchable/10103#10103); - `path` uses `Vec` now, instead of `BoundedVec` since it is never used in PoV; - removes the `Transfer` event due to it's redundancy with the events emitted by `fungible/s` implementations; - modifies the `SwapExecuted` event type; related issue: - https://github.com/paritytech/polkadot-sdk/issues/105 related PRs: - (required for) https://github.com/paritytech/polkadot-sdk/pull/1845 - (caused) https://github.com/paritytech/polkadot-sdk/pull/1717 // DONE make the pallet work only with `fungibles` trait and make it free from the concept of a `native` asset - https://github.com/paritytech/polkadot-sdk/issues/1842 --------- Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
NOTE: We have recently made significant changes to our repository structure. In order to streamline our development process and foster better contributions, we have merged three separate repositories Cumulus, Substrate and Polkadot into this repository. Read more about the changes here.
Polkadot SDK
The Polkadot SDK repository provides all the resources needed to start building on the Polkadot network, a multi-chain blockchain platform that enables different blockchains to interoperate and share information in a secure and scalable way. The Polkadot SDK comprises three main pieces of software:
Polkadot
Implementation of a node for the https://polkadot.network in Rust, using the Substrate framework. This directory
currently contains runtimes for the Polkadot, Kusama, Westend, and Rococo networks. In the future, these will be
relocated to the runtimes repository.
Substrate
Substrate is the primary blockchain SDK used by developers to create the parachains that make up the Polkadot network. Additionally, it allows for the development of self-sovereign blockchains that operate completely independently of Polkadot.
Cumulus
Cumulus is a set of tools for writing Substrate-based Polkadot parachains.
Upstream Dependencies
Below are the primary upstream dependencies utilized in this project:
Security
The security policy and procedures can be found in docs/contributor/SECURITY.md.
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Additional Resources
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visit the
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