Struct DiagnosticLog 

pub struct DiagnosticLog<E: DiagnosticRecord> { /* private fields */ }

Bounded in-memory diagnostic log with optional stderr mirroring.

Generic over the entry type E so different subsystems can use their own entry structs while sharing the log infrastructure.

Implementations

impl<E: DiagnosticRecord> DiagnosticLog<E>

pub fn new() -> Self

Create a new diagnostic log with a default capacity of 10 000 entries.

pub fn with_stderr(self) -> Self

Enable stderr mirroring — each recorded entry is also written to stderr as a JSONL line.

pub fn with_max_entries(self, max: usize) -> Self

Set the maximum number of entries to keep. When the log is full, the oldest entry is evicted. Pass 0 for unlimited.

pub fn record(&mut self, entry: E)

Record a diagnostic entry.

pub fn entries(&self) -> &[E]

Get all entries.

pub fn entries_matching(&self, predicate: impl Fn(&E) -> bool) -> Vec<&E>

Get entries matching a predicate.

pub fn clear(&mut self)

Clear all entries.

pub fn to_jsonl(&self) -> String

Export all entries as a JSONL string (newline-separated).

pub fn len(&self) -> usize

Number of recorded entries.

pub fn is_empty(&self) -> bool

Whether the log is empty.

Trait Implementations

impl<E: Debug + DiagnosticRecord> Debug for DiagnosticLog<E>

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

Formats the value using the given formatter.

impl<E: DiagnosticRecord> Default for DiagnosticLog<E>

fn default() -> Self

Returns the “default value” for a type.