Struct sc_tracing::ProfilingLayer

pub struct ProfilingLayer { /* private fields */ }

Responsible for assigning ids to new spans, which are not re-used.

Implementations

impl ProfilingLayer

pub fn new(receiver: TracingReceiver, targets: &str) -> Self

Takes a TracingReceiver and a comma separated list of targets, either with a level: “pallet=trace,frame=debug” or without: “pallet,frame” in which case the level defaults to trace. wasm_tracing indicates whether to enable wasm traces

pub fn new_with_handler(
    trace_handler: Box<dyn TraceHandler>,
    targets: &str
) -> Self

Allows use of a custom TraceHandler to create a new instance of ProfilingSubscriber. Takes a comma separated list of targets, either with a level, eg: “pallet=trace” or without: “pallet” in which case the level defaults to trace. wasm_tracing indicates whether to enable wasm traces

Trait Implementations

impl<S: Subscriber> Layer<S> for ProfilingLayer

fn new_span(&self, attrs: &Attributes<'_>, id: &Id, _ctx: Context<'_, S>)

Notifies this layer that a new span was constructed with the given Attributes and Id.

fn on_record(&self, span: &Id, values: &Record<'_>, _ctx: Context<'_, S>)

Notifies this layer that a span with the given Id recorded the given values.

fn on_event(&self, event: &Event<'_>, _ctx: Context<'_, S>)

Notifies this layer that an event has occurred.

fn on_enter(&self, span: &Id, _ctx: Context<'_, S>)

Notifies this layer that a span with the given ID was entered.

fn on_exit(&self, span: &Id, _ctx: Context<'_, S>)

Notifies this layer that the span with the given ID was exited.

fn on_close(&self, span: Id, ctx: Context<'_, S>)

Notifies this layer that the span with the given ID has been closed.

fn register_callsite(&self, metadata: &'static Metadata<'static>) -> Interest

Registers a new callsite with this layer, returning whether or not the layer is interested in being notified about the callsite, similarly to Subscriber::register_callsite.

fn enabled(&self, metadata: &Metadata<'_>, ctx: Context<'_, S>) -> bool

Returns true if this layer is interested in a span or event with the given metadata in the current Context, similarly to Subscriber::enabled.

fn on_follows_from(&self, _span: &Id, _follows: &Id, _ctx: Context<'_, S>)

Notifies this layer that a span with the ID span recorded that it follows from the span with the ID follows.

fn on_id_change(&self, _old: &Id, _new: &Id, _ctx: Context<'_, S>)

Notifies this layer that a span ID has been cloned, and that the subscriber returned a different ID.

fn and_then<L>(self, layer: L) -> Layered<L, Self, S> where
    L: Layer<S>, 

Composes this layer around the given Layer, returning a Layered struct implementing Layer.

fn with_subscriber(self, inner: S) -> Layered<Self, S, S>

Composes this Layer with the given Subscriber, returning a Layered struct that implements Subscriber.