Struct WitnessState 

pub struct WitnessState {
    pub snapshot: ContentHash,
    pub at: u64,
}

What one witness has attested, as the fold sees it after replaying OpKind::CountersignSnapshot (D67).

One row per witness, not one per (witness, snapshot) pair. The question worth answering is “how many witnesses have seen the ref-state that is current”, and keeping only the latest bounds this section by the witness population rather than by uptime — the D64 growth property, and the same trade View::vouches makes. Everything older is still in the log, which is where history lives.

Fields

snapshot: ContentHash

Content address of the snapshot this witness last attested.

at: u64

Log sequence of the countersigning op.

Trait Implementations

impl Clone for WitnessState

fn clone(&self) -> WitnessState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WitnessState

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WitnessState

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for WitnessState

fn eq(&self, other: &WitnessState) -> 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 Serialize for WitnessState

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for WitnessState

impl StructuralPartialEq for WitnessState