Struct InboundMessageId

pub struct InboundMessageId {
    pub sent_at: BlockNumber,
    pub reverse_idx: u32,
}

A structure that helps identify a message inside a collection of messages sorted by sent_at.

This structure contains a sent_at field and a reverse index. Using this information, we can identify a message inside a sorted collection by walking back reverse_idx positions starting from the last message that has the provided sent_at.

We use a reverse index instead of a normal index because sometimes the messages at the beginning of the collection are being pruned.

Example

For the collection msgs = [{sent_at: 0}, {sent_at: 1}, {sent_at: 1}, {sent_at: 1}, {sent_at: 1}, {sent_at: 3}]

InboundMessageId {sent_at: 1, reverse_idx: 0} points to msgs[4] InboundMessageId {sent_at: 1, reverse_idx: 3} points to msgs[1] InboundMessageId {sent_at: 1, reverse_idx: 4} points to msgs[0]

Fields

sent_at: BlockNumber

The block number at which this message was added to the message passing queue on the relay chain.

reverse_idx: u32

The reverse index of the message in the collection of messages sent at sent_at.

Trait Implementations

impl Clone for InboundMessageId

fn clone(&self) -> InboundMessageId

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for InboundMessageId

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

Formats the value using the given formatter.

impl Decode for InboundMessageId

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

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

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 Default for InboundMessageId

fn default() -> InboundMessageId

Returns the “default value” for a type.

impl Encode for InboundMessageId

fn size_hint(&self) -> usize

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

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

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

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

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R

where 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 for InboundMessageId

fn eq(&self, other: &InboundMessageId) -> bool

Tests for self and other values to be equal, and is used by ==.

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

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

impl TypeInfo for InboundMessageId

type Identity = InboundMessageId

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl DecodeWithMemTracking for InboundMessageId

impl EncodeLike for InboundMessageId

impl StructuralPartialEq for InboundMessageId