Crate bp_westend

Primitives of the Westend chain.

Modules

parachains

Primitives of polkadot-like chains, that are related to parachains functionality.

time_units

Human readable time units defined in terms of number of blocks.

Structs

AccountInfoStorageMapKeyProvider

Provides a storage key for account data.

BlockLength

All Polkadot-like chains have maximal block size set to 5MB.

BlockWeights

All Polkadot-like chains have the same block weights.

ExtrinsicBaseWeight

Weight of executing a NO-OP extrinsic, for example System::remark. Calculated by multiplying the Average with 1.0 and adding 0.

Perbill

A fixed point representation of a number in the range [0, 1].

Westend

Westend Chain

Constants

AVERAGE_HEADER_SIZE

Average header size in votes_ancestries field of justification on Polkadot-like chains.

AVERAGE_ON_INITIALIZE_RATIO

All Polkadot-like chains assume that an on-initialize consumes 1 percent of the weight on average, hence a single extrinsic will not be allowed to consume more than AvailableBlockRatio - 1 percent.

BEST_FINALIZED_WESTEND_HEADER_METHOD

Name of the <ThisChain>FinalityApi::best_finalized runtime method.

DAYS

A day, expressed in Polkadot-like chain blocks.

EXTRA_STORAGE_PROOF_SIZE

Number of extra bytes (excluding size of storage value itself) of storage proof, built at Polkadot-like chain. This mostly depends on number of entries in the storage trie. Some reserve is reserved to account future chain growth.

FREE_HEADERS_INTERVAL_FOR_WESTEND_METHOD

Name of the <ThisChain>FinalityApi::free_headers_interval runtime method.

HOURS

A hour, expressed in Polkadot-like chain blocks.

MAXIMUM_BLOCK_WEIGHT

All Polkadot-like chains allow 2 seconds of compute with a 6-second average block time.

MAX_AUTHORITIES_COUNT

Maximal number of GRANDPA authorities at Polkadot-like chains.

MAX_MANDATORY_HEADER_SIZE

Approximate maximal header size on Polkadot-like chains.

MAX_MESSAGES_IN_DELIVERY_TRANSACTION

Maximal number of messages in single delivery transaction.

MAX_NESTED_PARACHAIN_HEAD_DATA_SIZE

Maximal size of encoded bp_parachains::ParaStoredHeaderData structure among all Westend parachains.

MILLISECS_PER_BLOCK

Milliseconds between Polkadot-like chain blocks.

MINUTES

A minute, expressed in Polkadot-like chain blocks.

PARAS_PALLET_NAME

Name of the parachains pallet in the Rococo runtime.

REASONABLE_HEADERS_IN_JUSTIFICATION_ANCESTRY

Reasonable number of headers in the votes_ancestries on Polkadot-like chains.

SLOT_DURATION

Slot duration in Polkadot-like chain consensus algorithms.

TX_EXTRA_BYTES

Maximal number of bytes, included in the signed Polkadot-like transaction apart from the encoded call itself.

WESTEND_SYNCED_HEADERS_GRANDPA_INFO_METHOD

Name of the <ThisChain>FinalityApi::accepted_<consensus>_finality_proofs runtime method.

WITH_WESTEND_BRIDGE_PARACHAINS_PALLET_NAME

Name of the With-Westend parachains pallet instance that is deployed at bridged chains.

WITH_WESTEND_GRANDPA_PALLET_NAME

Name of the With-Westend GRANDPA pallet instance that is deployed at bridged chains.

Traits

Convert

Infallible conversion trait. Generic over both source and destination types.

Parameter

A type that can be used as a parameter in a dispatchable function.

SuffixedCommonTransactionExtensionExt

Helper trait to define some extra methods on SuffixedCommonTransactionExtension.

WestendFinalityApi

API for querying information about the finalized chain headers.

Functions

max_extrinsic_size

Returns maximal extrinsic size on all Polkadot-like chains.

max_extrinsic_weight

Returns maximal extrinsic weight on all Polkadot-like chains.

Type Aliases

AccountAddress

Address of account on Polkadot-like chains.

AccountId

Id of account on Polkadot-like chains.

AccountPublic

Public key of account on Polkadot-like chains.

Address

Account address, used by the Polkadot-like chain.

Balance

The balance of an account on Polkadot-like chain.

Block

Block type of Polkadot-like chains.

BlockNumber

Block number type used in Polkadot-like chains.

CommonTransactionExtension

Signed extension that is used by most chains.

CommonTransactionExtra

Extra signed extension data that is used by most chains.

Hash

Hash type used in Polkadot-like chains.

Hasher

The type of object that can produce hashes on Polkadot-like chains.

Hashing

Hashing type.

Header

The header type used by Polkadot-like chains.

Nonce

Nonce of a transaction on the Polkadot-like chains.

Signature

Signature type used by Polkadot-like chains.

SignedBlock

Polkadot-like block signed with a Justification.

SuffixedCommonTransactionExtension

Extra transaction extension data that starts with CommonTransactionExtra.

TransactionExtension

Signed extension that is used by most chains.

UncheckedExtrinsic

Unchecked Extrinsic type.