Struct Observation

pub struct Observation<Context, Value>
where
    Context: Config,
{
    pub first_seen: Moment<Context>,
    pub last_seen: Moment<Context>,
    pub blocks_seen: BlockNumberFor<Context>,
    pub value: Value,
}

Persistent observation record for a value managed by Finalized storage.

An Observation captures when a value was seen and how many distinct blocks it has survived after entering the finality window.

This structure does not imply finality by itself; it only provides the evidence required by FinalizedPolicy to derive a Confidence level.

Fields

first_seen: Moment<Context>

Wall-clock time when the value was first observed.

last_seen: Moment<Context>

Wall-clock time when the value was last observed.

blocks_seen: BlockNumberFor<Context>

Number of distinct blocks in which the value was observed after the finality window elapsed.

value: Value

The observed value.

Trait Implementations

impl<Context, Value: Clone> Clone for Observation<Context, Value>

where Context: Config + Clone,

fn clone(&self) -> Observation<Context, Value>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Context, Value: Debug> Debug for Observation<Context, Value>

where Context: Config + Debug,

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

Formats the value using the given formatter.

impl<Context, Value> Decode for Observation<Context, Value>

where Context: Config, Moment<Context>: Decode, BlockNumberFor<Context>: Decode, Value: Decode,

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<Context, Value> Encode for Observation<Context, Value>

where Context: Config, Moment<Context>: Encode, BlockNumberFor<Context>: Encode, Value: Encode,

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

Convert self to a slice and append it to the destination.

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

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R

where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<Context, Value> EncodeLike for Observation<Context, Value>

where Context: Config, Moment<Context>: Encode, BlockNumberFor<Context>: Encode, Value: Encode,