Struct Cursor 

pub struct Cursor {
    pub height: u32,
    pub tx_index: u32,
    pub mempool_seq: u64,
    pub instance_id: u64,
}

Durable resume position, re-exported from the wire schema. Persist the value returned by EventStream::cursor and present it again as from_cursor to resume. Durable resume position. Confirmed-side cursors are (height, tx_index) — per-transaction, so a client can resume mid-block after a disconnect. mempool_seq is a best-effort high-water mark for the mempool side (advisory; resets on daemon restart). A client persists the cursor from the last NodeEvent it durably processed and presents it as from_cursor on reconnect.

Fields

height: u32

block height of the last delivered confirmed item

tx_index: u32

index within that block of the last delivered tx

mempool_seq: u64

best-effort mempool high-water (advisory)

instance_id: u64

Per-process epoch nonce of the issuing publisher. node_id is stable across restarts, but mempool_seq resets to 0 each daemon start; on a from_cursor resume the server discards mempool_seq when this differs from the live instance (daemon restarted since the cursor was issued). Confirmed (height) replay is instance-independent and unaffected.

Trait Implementations

impl Clone for Cursor

fn clone(&self) -> Cursor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Cursor

impl Debug for Cursor

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

Formats the value using the given formatter.

impl Default for Cursor

fn default() -> Cursor

Returns the “default value” for a type.

impl Message for Cursor

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

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

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

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

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Cursor

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Cursor