Struct NullBackend 

pub struct NullBackend;

Available on non-WebAssembly only.

No-op backend that discards all events.

Useful for testing or when observability is disabled.

Implementations

impl NullBackend

pub fn new() -> Self

Create a new null backend.

Trait Implementations

impl Clone for NullBackend

fn clone(&self) -> NullBackend

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for NullBackend

impl Debug for NullBackend

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

Formats the value using the given formatter.

impl Default for NullBackend

fn default() -> Self

Returns the “default value” for a type.

impl ObservabilityBackend for NullBackend

fn record_request<'life0, 'life1, 'async_trait>( &'life0 self, _event: &'life1 McpRequestEvent, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Record a request event (called when request is received).

fn record_response<'life0, 'life1, 'async_trait>( &'life0 self, _event: &'life1 McpResponseEvent, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Record a response event (called when response is sent).

fn emit_metric<'life0, 'life1, 'async_trait>( &'life0 self, _metric: &'life1 McpMetric, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Emit a metric data point.

fn flush<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Flush pending data (called on shutdown or periodically).

fn name(&self) -> &'static str

Backend name for diagnostics.

fn is_enabled(&self) -> bool

Check if the backend is enabled.