Struct NullTracer 

pub struct NullTracer;

A no-op implementation of TracerSystem that silently discards all tracing operations

This class follows the Null Object Pattern to eliminate conditional checks in client code. All record methods are overridden to do nothing, and all query methods return empty results.

Implementations

impl NullTracer

pub fn new() -> Self

Create a new null tracer

pub fn is_enabled(&self) -> bool

Always returns false for null tracer

pub fn enable(&self)

No-op method for interface compatibility

pub fn disable(&self)

No-op method for interface compatibility

pub fn record_event(&self, _event: Box<dyn TracerEvent>)

Do nothing implementation of record_event

pub fn record_llm_call( &self, _model: impl Into<String>, _messages: Vec<HashMap<String, Value>>, _temperature: f64, _tools: Option<Vec<HashMap<String, Value>>>, _source: impl Into<String>, _correlation_id: impl Into<String>, )

Do nothing implementation of record_llm_call

pub fn record_llm_response( &self, _model: impl Into<String>, _content: impl Into<String>, _tool_calls: Option<Vec<HashMap<String, Value>>>, _call_duration_ms: Option<f64>, _source: impl Into<String>, _correlation_id: impl Into<String>, )

Do nothing implementation of record_llm_response

pub fn record_tool_call( &self, _tool_name: impl Into<String>, _arguments: HashMap<String, Value>, _result: Value, _caller: Option<String>, _call_duration_ms: Option<f64>, _source: impl Into<String>, _correlation_id: impl Into<String>, )

Do nothing implementation of record_tool_call

pub fn record_agent_interaction( &self, _from_agent: impl Into<String>, _to_agent: impl Into<String>, _event_type: impl Into<String>, _event_id: Option<String>, _source: impl Into<String>, _correlation_id: impl Into<String>, )

Do nothing implementation of record_agent_interaction

pub fn get_event_summaries( &self, _start_time: Option<f64>, _end_time: Option<f64>, _filter_func: Option<&dyn EventFilterFn>, ) -> Vec<String>

Return an empty vector for any get_event_summaries request

pub fn get_last_n_summaries( &self, _n: usize, _filter_func: Option<&dyn EventFilterFn>, ) -> Vec<String>

Return an empty vector for any get_last_n_summaries request

pub fn count_events( &self, _start_time: Option<f64>, _end_time: Option<f64>, _filter_func: Option<&dyn EventFilterFn>, ) -> usize

Return 0 for any count_events request

pub fn clear(&self)

Do nothing implementation of clear method

pub fn len(&self) -> usize

Always returns 0 for null tracer

pub fn is_empty(&self) -> bool

Always returns true for null tracer

Trait Implementations

impl Default for NullTracer

fn default() -> Self

Returns the “default value” for a type.