Struct polkadot_primitives::v2::CandidateDescriptor

pub struct CandidateDescriptor<H = Hash> {
    pub para_id: Id,
    pub relay_parent: H,
    pub collator: CollatorId,
    pub persisted_validation_data_hash: Hash,
    pub pov_hash: Hash,
    pub erasure_root: Hash,
    pub signature: CollatorSignature,
    pub para_head: Hash,
    pub validation_code_hash: ValidationCodeHash,
}

A unique descriptor of the candidate receipt.

Fields

para_id: Id

The ID of the para this is a candidate for.

relay_parent: H

The hash of the relay-chain block this is executed in the context of.

collator: CollatorId

The collator’s sr25519 public key.

persisted_validation_data_hash: Hash

The blake2-256 hash of the persisted validation data. This is extra data derived from relay-chain state which may vary based on bitfields included before the candidate. Thus it cannot be derived entirely from the relay-parent.

pov_hash: Hash

The blake2-256 hash of the PoV.

erasure_root: Hash

The root of a block’s erasure encoding Merkle tree.

signature: CollatorSignature

Signature on blake2-256 of components of this receipt: The parachain index, the relay parent, the validation data hash, and the pov_hash.

para_head: Hash

Hash of the para header that is being generated by this candidate.

validation_code_hash: ValidationCodeHash

The blake2-256 hash of the validation code bytes.

Implementations

impl<H: AsRef<[u8]>> CandidateDescriptor<H>

pub fn check_collator_signature(&self) -> Result<(), ()>

Check the signature of the collator within this descriptor.

Trait Implementations

impl<H: Clone> Clone for CandidateDescriptor<H>

fn clone(&self) -> CandidateDescriptor<H>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<H> Debug for CandidateDescriptor<H>where H: Debug,

fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<H> Decode for CandidateDescriptor<H>where H: Decode,

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn skip<I>(input: &mut I) -> Result<(), Error>where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<H> Encode for CandidateDescriptor<H>where H: Encode,

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy )

Convert self to a slice and append it to the destination.

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode(&self) -> Vec<u8, Global>

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> Rwhere F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<H: Hash> Hash for CandidateDescriptor<H>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<H: PartialEq> PartialEq<CandidateDescriptor<H>> for CandidateDescriptor<H>

fn eq(&self, other: &CandidateDescriptor<H>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<H> TypeInfo for CandidateDescriptor<H>where H: TypeInfo + 'static,

type Identity = CandidateDescriptor<H>

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl<H> EncodeLike<CandidateDescriptor<H>> for CandidateDescriptor<H>where H: Encode,

impl<H: Eq> Eq for CandidateDescriptor<H>

impl<H> StructuralEq for CandidateDescriptor<H>

impl<H> StructuralPartialEq for CandidateDescriptor<H>