Crate cumulus_pallet_parachain_system

cumulus-pallet-parachain-system is a base pallet for cumulus-based parachains.

This pallet handles low-level details of being a parachain. It’s responsibilities include:

• ingestion of the parachain validation data
• ingestion of incoming downward and lateral messages and dispatching them
• coordinating upgrades with the relay-chain
• communication of parachain outputs, such as sent messages, signalling an upgrade, etc.

Users must ensure that they register this pallet as an inherent provider.

Re-exports

pub use pallet::*;

Modules

pallet

The module that hosts all the FRAME types needed to add this pallet to a runtime.

validate_block

A module that enables a runtime to work as parachain.

Macros

register_validate_block

Register the validate_block function that is used by parachains to validate blocks on a validator.

Structs

AnyRelayNumber

Provides an implementation of CheckAssociatedRelayNumber.

MessagingStateSnapshot

A snapshot of some messaging related state of relay chain pertaining to the current parachain.

ParachainSetCode

RelayChainStateProof

A state proof extracted from the relay chain.

RelayNumberStrictlyIncreases

Provides an implementation of CheckAssociatedRelayNumber.

RelaychainBlockNumberProvider

Implements BlockNumberProvider that returns relay chain block number fetched from validation data. NTOE: When validation data is not available (e.g. within on_initialize), 0 will be returned.

Traits

CheckAssociatedRelayNumber

Something that can check the associated relay block number.

CheckInherents

Something that can check the inherents of a block.

OnSystemEvent

Something that should be informed about system related events.