Struct BlockTracker 

pub struct BlockTracker { /* private fields */ }

Tracks the last N block headers to enable reorg detection.

When a new block arrives, the tracker checks whether its parent_hash matches the hash of the previous block. A mismatch means a reorg occurred.

Implementations

impl BlockTracker

pub fn new(window_size: usize) -> Self

Create a new tracker with the given window size. A window of 128 covers deep reorgs for all major EVM chains.

pub fn push(&mut self, block: BlockInfo) -> Result<(), u64>

Add a new block to the tracker.

Returns Ok(()) if the block extends the current head. Returns Err(reorg_depth) if a reorg is detected (parent hash mismatch).

pub fn head(&self) -> Option<&BlockInfo>

Returns the current chain head (most recently added block).

pub fn get(&self, number: u64) -> Option<&BlockInfo>

Returns a block by number if it’s in the window.

pub fn len(&self) -> usize

Number of blocks in the window.

pub fn is_empty(&self) -> bool

Returns true if the window is empty.

pub fn rewind_to(&mut self, block_number: u64)

Rewind the tracker to a given block number (discard everything after it).