Struct Cursor 

pub struct Cursor {
    pub block_number: u64,
    pub block_hash: String,
    pub confirmation_depth: u64,
}

The indexer’s current position in the chain.

The cursor knows:

• Which block was last successfully processed
• The confirmation depth (how many blocks behind head we consider “confirmed”)

Fields

block_number: u64

Last confirmed block number that was processed.

block_hash: String

Last confirmed block hash.

confirmation_depth: u64

Minimum number of confirmations before processing a block.

Implementations

impl Cursor

pub fn new( block_number: u64, block_hash: impl Into<String>, confirmation_depth: u64, ) -> Self

Create a new cursor at the given starting position.

pub fn advance(&mut self, block_number: u64, block_hash: impl Into<String>)

Advance the cursor to a new confirmed block.

pub fn is_confirmed(&self, target: u64, head_number: u64) -> bool

Returns true if head_number is far enough ahead for target to be confirmed.

pub fn next_block(&self) -> u64

Returns the next block to process (cursor + 1).

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 Debug for Cursor

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Cursor

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Cursor

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.