Struct DeltaBuffer 

pub struct DeltaBuffer<D> { /* private fields */ }

A ring buffer that stores recent deltas along with their versions.

When a peer requests sync, we can provide deltas since their last known version. If the gap is too large (oldest delta evicted), the peer needs a full state transfer instead.

Implementations

impl<D: Clone> DeltaBuffer<D>

pub fn new(max_size: usize) -> Self

Create a new buffer with the given capacity.

pub fn push(&mut self, version: VClock, delta: D)

Push a new delta with its associated version.

pub fn deltas_since(&self, version: &VClock) -> Option<Vec<D>>

Get all deltas since the given version.

Returns None if the version is older than or equal to our oldest evicted delta. Returns Some(vec![]) if the peer is up-to-date.

pub fn can_serve(&self, version: &VClock) -> bool

Check if we can provide deltas since the given version.

pub fn len(&self) -> usize

Get the number of deltas currently stored.

pub fn is_empty(&self) -> bool

Check if the buffer is empty.

Trait Implementations

impl<D: Clone> Clone for DeltaBuffer<D>

fn clone(&self) -> DeltaBuffer<D>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<D: Debug> Debug for DeltaBuffer<D>

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

Formats the value using the given formatter.

impl<'de, D> Deserialize<'de> for DeltaBuffer<D>

where D: Deserialize<'de>,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<D> Serialize for DeltaBuffer<D>

where D: Serialize,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.