Crate ismp_parachain

Expand description

§ISMP Parachain Client

This allows parachains communicate over ISMP leveraging the relay chain as a consensus oracle.

The consensus client relies on a pallet which stores a list of parachains whom we intend to track their finalized states. This can be paired with an inherent provider which includes the proofs for the relevant parachains configured in the pallet at every block.

§Overview

The Pallet allows the AdminOrigin configured in pallet-ismp to dispatch calls for adding and removing parachains from the pallet whitelist.

§License

Re-exports§

pub use weights::WeightInfo;
pub use consensus::*;
pub use pallet::*;

Modules§

consensus: The parachain consensus client module
migration: Storage migrations for ismp-parachain.
pallet: The pallet module in each FRAME pallet hosts the most important items needed to construct this pallet.
weights: weights trait crate

Structs§

MaxRelayStateCommitments: Type-level Get<u32> mirror of MAX_RELAY_STATE_COMMITMENTS, used as the bound for pallet::KnownRelayHeights.
ParachainData: Data provided when registering a parachain to be tracked by hyperbridge consensus client

Enums§

LegacyDrainState: State of the multi-block drain of the legacy RelayChainStateCommitments map. Active(None) is the initial state and means the next on_idle call should pass None as the clear() cursor (start from the beginning). Active(Some(cursor)) carries the cursor returned by the previous call so the next call resumes where it left off. Done is set when clear() returns None, indicating the prefix has been fully cleared; subsequent on_idle calls become a single cheap read and do no further work.

Constants§

MAX_RELAY_STATE_COMMITMENTS: Maximum number of relay-chain state commitments retained in pallet::CurrentRelayChainStateRoots. At ~6s per relay block, 256 entries covers ~25 minutes of history.

Traits§

RelayChainOracle: Interface that exposes the relay chain state roots.

Functions§

parachain_consensus_state_id: Returns the consensus state id for The relay chain