Struct TracingContext 

pub struct TracingContext { /* private fields */ }

High-level tracing context for LangGraph applications.

Bundles store, event bus, and observer into a single convenient API. Use with #[derive(Traceable)] on your state struct for automatic setup.

Implementations

impl TracingContext

pub fn observer(&mut self) -> &mut TracingGraphObserver

Access the underlying observer for low-level tracing operations.

pub fn store(&self) -> &Arc<InMemoryTracingStore>

Access the underlying store.

pub fn event_bus(&self) -> &EventBus

Access the underlying event bus.

pub fn new() -> Self

Create a new tracing context with in-memory store.

pub fn start_server(&self, addr: &str)

Start the tracing web server in a background task.

pub async fn run_with_tracing<F, Fut>( &mut self, name: &str, input: JsonValue, base_config: RunnableConfig, f: F, ) -> JsonValue

where F: FnOnce(RunnableConfig) -> Fut, Fut: Future<Output = JsonValue>,

Run a graph with automatic tracing.

The closure receives a RunnableConfig (with trace_id injected into configurable) and should execute the graph, returning the output.

on_graph_start and on_graph_end are called automatically.

Trait Implementations

impl Default for TracingContext

fn default() -> Self

Returns the “default value” for a type.