Struct polkadot_primitives::v2::AbridgedHrmpChannel

pub struct AbridgedHrmpChannel {
    pub max_capacity: u32,
    pub max_total_size: u32,
    pub max_message_size: u32,
    pub msg_count: u32,
    pub total_size: u32,
    pub mqc_head: Option<Hash>,
}

Abridged version of HrmpChannel (from the Hrmp parachains host runtime module) meant to be used by a parachain or PDK such as cumulus.

Fields

max_capacity: u32

The maximum number of messages that can be pending in the channel at once.

max_total_size: u32

The maximum total size of the messages that can be pending in the channel at once.

max_message_size: u32

The maximum message size that could be put into the channel.

msg_count: u32

The current number of messages pending in the channel. Invariant: should be less or equal to max_capacity.s`.

total_size: u32

The total size in bytes of all message payloads in the channel. Invariant: should be less or equal to max_total_size.

mqc_head: Option<Hash>

A head of the Message Queue Chain for this channel. Each link in this chain has a form: (prev_head, B, H(M)), where

• prev_head: is the previous value of mqc_head or zero if none.
• B: is the [relay-chain] block number in which a message was appended
• H(M): is the hash of the message being appended. This value is initialized to a special value that consists of all zeroes which indicates that no messages were previously added.

Trait Implementations

impl Clone for AbridgedHrmpChannel

fn clone(&self) -> AbridgedHrmpChannel

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AbridgedHrmpChannel

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

Formats the value using the given formatter.

impl Decode for AbridgedHrmpChannel

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 Encode for AbridgedHrmpChannel

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 PartialEq<AbridgedHrmpChannel> for AbridgedHrmpChannel

fn eq(&self, other: &AbridgedHrmpChannel) -> 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 TypeInfo for AbridgedHrmpChannel

type Identity = AbridgedHrmpChannel

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl EncodeLike<AbridgedHrmpChannel> for AbridgedHrmpChannel

impl StructuralPartialEq for AbridgedHrmpChannel