Struct InMemorySink 

pub struct InMemorySink { /* private fields */ }

In-memory sink that collects every recorded StepFact.

Useful for tests and for tooling that wants to inspect the fact stream without going through disk. It builds the same chain as the file sink, so its fingerprint is the one the file would have.

Implementations

impl InMemorySink

pub fn new() -> Self

Create an empty sink.

pub fn header(&self) -> Option<&TranscriptHeader>

The header, once written.

pub fn facts(&self) -> &[StepFact]

Recorded facts in the order they arrived.

pub fn len(&self) -> usize

Number of facts recorded so far.

pub fn is_empty(&self) -> bool

Whether any fact has been recorded.

Trait Implementations

impl Debug for InMemorySink

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

Formats the value using the given formatter.

impl Default for InMemorySink

fn default() -> Self

Returns the “default value” for a type.

impl TranscriptSink for InMemorySink

fn begin(&mut self, header: &TranscriptHeader) -> Result<()>

Write the header line. Must be called once, before any fact.

fn record( &mut self, at: DateTime<Utc>, level: Level, fact: &StepFact, ) -> Result<()>

Record a single fact at level, stamped with the caller-supplied event time at. Must persist before returning, the file-backed implementation calls sync_data so a power loss after record returns cannot drop the fact.

fn finalize(&mut self) -> Result<TranscriptFingerprint>

Finalize the transcript and return its fingerprint.