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Board

Struct Board 

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pub struct Board { /* private fields */ }
Expand description

Rolling buffer of recent events for cross-component visibility.

Backed by a VecDeque with a configurable maximum size. When full, the oldest entry is evicted on each append.

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impl Board

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pub fn new() -> Self

Creates a new Board with default capacity (1000 entries).

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pub fn with_capacity(max_entries: usize) -> Self

Creates a new Board with specified maximum entries.

A max_entries of 0 is treated as 1 (at least one entry is always stored).

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pub fn append(&mut self, entry: BoardEntry)

Appends an entry, evicting the oldest if at capacity.

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pub fn recent(&self, n: usize) -> Vec<&BoardEntry>

Returns the most recent n entries (oldest first, newest last).

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pub fn query_by_source( &self, source: &ComponentId, n: usize, ) -> Vec<&BoardEntry>

Returns the most recent n entries from a specific source (oldest first).

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pub fn recent_as_json(&self, n: usize) -> Vec<Value>

Returns the most recent n entries as JSON values.

Each entry is serialized via serde. Entries that fail serialization are silently skipped.

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pub fn len(&self) -> usize

Returns the total number of entries.

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pub fn is_empty(&self) -> bool

Returns true if the board has no entries.

Trait Implementations§

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impl Default for Board

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl Freeze for Board

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impl RefUnwindSafe for Board

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impl Send for Board

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impl Sync for Board

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impl Unpin for Board

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impl UnsafeUnpin for Board

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impl UnwindSafe for Board

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more