Struct LogRingBuffer 

pub struct LogRingBuffer { /* private fields */ }

Bounded ring buffer of log records (oldest are dropped when full).

Implementations

impl LogRingBuffer

pub fn new(capacity: usize) -> Self

Create a new ring buffer with the given capacity. A capacity of 0 means the buffer is effectively disabled (pushes are no-ops, snapshots are empty).

pub fn capacity(&self) -> usize

Maximum number of records the buffer can hold.

pub fn push(&self, record: LogRecord)

Append a record, dropping the oldest one if the buffer is full.

pub fn snapshot( &self, since_ts_ms: Option<i64>, min_level: Option<&str>, target_prefix: Option<&str>, limit: Option<usize>, ) -> Vec<LogRecord>

Return a filtered, ordered (oldest first) snapshot of buffered records.

Arguments

• since_ts_ms - drop records with timestamp_ms < since_ts_ms
• min_level - drop records below this level (TRACE < DEBUG < INFO < WARN < ERROR)
• target_prefix - drop records whose target does not start with this prefix
• limit - return at most this many records (most recent records win)

pub fn clear(&self)

Clear all buffered records (used in tests).