Struct NullSink 

pub struct NullSink;

Discard sink: accepts every record and drops it. Use this when the test or production stack needs the runtime composition to match LoggingResource(...) shape but does not need to retain log records.

InMemorySink keeps every record alive for as long as the sink (and therefore the wrapping LoggingResource) lives. In long- running stress loops that compose LoggingResource(InMemorySink) once and reuse it across many iterations, that buffer grows unbounded — measurable memory and CPU overhead even if no test reads the records. NullSink solves that by discarding the record without allocating; the decorator still constructs the LogRecord (one stack-allocated value per call), but no per-record retention occurs.

Implementations

impl NullSink

pub fn new() -> Self

Trait Implementations

impl Default for NullSink

fn default() -> Self

Returns the “default value” for a type.

impl LoggingSink for NullSink

fn emit(&self, _record: LogRecord) -> Result<(), SinkError>

Accept a record. Implementations must not panic on full / closed / IO-error conditions — return SinkError instead.