Crate bp_header_chain

Defines traits which represent a common interface for Substrate pallets which want to incorporate bridge functionality.

Modules

• justification
  Logic for checking GRANDPA Finality Proofs.
• storage_keys
  Storage keys of bridge GRANDPA pallet.

Structs

• AuthoritySet
  A GRANDPA Authority List and ID.
• GrandpaConsensusLogReader
  A struct that provides helper methods for querying the GRANDPA consensus log.
• HeaderFinalityInfo
  The finality-related info associated to a header.
• InitializationData
  Data required for initializing the GRANDPA bridge pallet.
• StoredHeaderData
  Header data that we’re storing on-chain.
• SubmitFinalityProofCallExtras
  Result of checking maximal expected submit finality proof call weight and size.
• SubmitFinalityProofInfo
  A digest information on the BridgeGrandpaCall::submit_finality_proof call.

Enums

• BridgeGrandpaCall
  A minimized version of pallet-bridge-grandpa::Call that can be used without a runtime.
• HeaderChainError
  Header chain error.

Traits

• ChainWithGrandpa
  Substrate-based chain that is using direct GRANDPA finality.
• ConsensusLogReader
  A trait that provides helper methods for querying the consensus log.
• FinalityProof
  Abstract finality proof that is justifying block finality.
• FindEquivocations
  Helper trait for finding equivocations in finality proofs.
• HeaderChain
  Substrate header chain, abstracted from the way it is stored.
• Parameter
  A type that can be used as a parameter in a dispatchable function.
• StoredHeaderDataBuilder
  Stored header data builder.

Functions

• max_expected_submit_finality_proof_arguments_size
  Returns maximal expected size of submit_finality_proof call arguments.
• submit_finality_proof_limits_extras
  Checks whether the given header and its finality proof fit the maximal expected call limits (size and weight). The submission may be refunded sometimes (see pallet configuration for details), but it should fit some limits. If the call has some extra weight and/or size included, though, we won’t refund it or refund will be partial.

Type Aliases

• BridgeGrandpaCallOf
  The BridgeGrandpaCall for a pallet that bridges with given C;
• HeaderGrandpaInfo
  Processed Grandpa-related info associated to a header.
• StoredHeaderGrandpaInfo
  Grandpa-related info associated to a header. This info can be saved to events.