Crate cumulus_primitives_parachain_inherent

Cumulus parachain inherent

The ParachainInherentData is the data that is passed by the collator to the parachain runtime. The runtime will use this data to execute messages from other parachains/the relay chain or to read data from the relay chain state. When the parachain is validated by a parachain validator on the relay chain, this data is checked for correctness. If the data passed by the collator to the runtime isn’t correct, the parachain candidate is considered invalid.

To create a ParachainInherentData for a specific relay chain block, there exists the ParachainInherentDataExt trait in cumulus-client-parachain-inherent that helps with this.

Modules

v0

Legacy ParachainInherentData that is kept around for backward compatibility. Can be removed once we can safely assume that parachain nodes provide the relay_parent_descendants and collator_peer_id fields.

Structs

HashedMessage

An inbound message whose content was hashed.

MessageQueueChain

This struct provides ability to extend a message queue chain (MQC) and compute a new head.

ParachainInherentData

The inherent data that is passed by the collator to the parachain runtime.

Constants

INHERENT_IDENTIFIER

PARACHAIN_INHERENT_IDENTIFIER_V0

The identifier for the parachain inherent.