Crate pezpallet_bridge_grandpa 

Bizinikiwi GRANDPA Pezpallet

This pezpallet is an on-chain GRANDPA light client for Bizinikiwi based chains.

This pezpallet achieves this by trustlessly verifying GRANDPA finality proofs on-chain. Once verified, finalized headers are stored in the pezpallet, thereby creating a sparse header chain. This sparse header chain can be used as a source of truth for other higher-level applications.

The pezpallet is responsible for tracking GRANDPA validator set hand-offs. We only import headers with justifications signed by the current validator set we know of. The header is inspected for a ScheduledChanges digest item, which is then used to update to next validator set.

Since this pezpallet only tracks finalized headers it does not deal with forks. Forks can only occur if the GRANDPA validator set on the bridged chain is either colluding or there is a severe bug causing resulting in an equivocation. Such events are outside the scope of this pezpallet. Shall the fork occur on the bridged chain governance intervention will be required to re-initialize the bridge and track the right fork.

Re-exports

pub use weights::WeightInfo;

pub use weights_ext::WeightInfoExt;

pub use pezpallet::*;

Modules

pezpallet

The pezpallet module in each FRAME pezpallet hosts the most important items needed to construct this pezpallet.

weights

Module, containing weights for this pezpallet. Autogenerated weights for pezpallet_bridge_grandpa

weights_ext

Weight-related utilities.

Structs

StoredAuthoritySet

A bounded GRANDPA Authority List and ID.

SubmitFinalityProofHelper

Helper struct that provides methods for working with the SubmitFinalityProof call.

VerifiedSubmitFinalityProofInfo

Verified SubmitFinalityProofInfo<N>.

Constants

LOG_TARGET

The target that will be used when publishing logs related to this pezpallet.

Traits

CallSubType

Trait representing a call that is a sub type of this pezpallet’s call.

Type Aliases

BridgedBlockHash

Block hash of the bridged chain.

BridgedBlockHasher

Hasher of the bridged chain.

BridgedBlockId

Block id of the bridged chain.

BridgedBlockNumber

Block number of the bridged chain.

BridgedChain

Bridged chain from the pezpallet configuration.

BridgedHeader

Header of the bridged chain.

BridgedStoredHeaderData

Header data of the bridged chain that is stored at this chain by this pezpallet.

GrandpaChainHeaders

Bridge GRANDPA pezpallet as header chain.