tracing_tunnel

Struct TracingEventSender

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pub struct TracingEventSender<F = fn(_: TracingEvent)> { /* private fields */ }
Available on crate feature sender only.
Expand description

Tracing [Subscriber] that converts tracing events into (de)serializable presentation that can be sent elsewhere using a customizable hook.

As an example, this subscriber is used in the Tardigrade client library to send workflow traces to the host via a WASM import function.

§Examples

See crate-level docs for an example of usage.

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impl<F: Fn(TracingEvent) + 'static> TracingEventSender<F>

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pub fn new(on_event: F) -> Self

Creates a subscriber with the specified “on event” hook.

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impl<F: Debug> Debug for TracingEventSender<F>

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

Formats the value using the given formatter. Read more
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impl<F: Fn(TracingEvent) + 'static> Subscriber for TracingEventSender<F>

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

Registers a new callsite with this subscriber, returning whether or not the subscriber is interested in being notified about the callsite. Read more
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fn enabled(&self, _metadata: &Metadata<'_>) -> bool

Returns true if a span or event with the specified metadata would be recorded. Read more
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fn new_span(&self, span: &Attributes<'_>) -> Id

Visit the construction of a new span, returning a new span ID for the span being constructed. Read more
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fn record(&self, span: &Id, values: &Record<'_>)

Record a set of values on a span. Read more
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fn record_follows_from(&self, span: &Id, follows: &Id)

Adds an indication that span follows from the span with the id follows. Read more
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fn event(&self, event: &Event<'_>)

Records that an Event has occurred. Read more
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fn enter(&self, span: &Id)

Records that a span has been entered. Read more
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fn exit(&self, span: &Id)

Records that a span has been exited. Read more
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fn clone_span(&self, span: &Id) -> Id

Notifies the subscriber that a span ID has been cloned. Read more
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fn try_close(&self, span: Id) -> bool

Notifies the subscriber that a span ID has been dropped, and returns true if there are now 0 IDs that refer to that span. Read more
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fn on_register_dispatch(&self, subscriber: &Dispatch)

Invoked when this subscriber becomes a [Dispatch]. Read more
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fn max_level_hint(&self) -> Option<LevelFilter>

Returns the highest verbosity level that this Subscriber will enable, or None, if the subscriber does not implement level-based filtering or chooses not to implement this method. Read more
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fn event_enabled(&self, event: &Event<'_>) -> bool

Determine if an [Event] should be recorded. Read more
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fn drop_span(&self, _id: Id)

👎Deprecated since 0.1.2: use Subscriber::try_close instead
This method is deprecated. Read more
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fn current_span(&self) -> Current

Returns a type representing this subscriber’s view of the current span. Read more
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unsafe fn downcast_raw(&self, id: TypeId) -> Option<*const ()>

If self is the same type as the provided TypeId, returns an untyped *const pointer to that type. Otherwise, returns None. Read more

Auto Trait Implementations§

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impl<F = fn(_: TracingEvent)> !Freeze for TracingEventSender<F>

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impl<F> RefUnwindSafe for TracingEventSender<F>
where F: RefUnwindSafe,

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impl<F> Send for TracingEventSender<F>
where F: Send,

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impl<F> Sync for TracingEventSender<F>
where F: Sync,

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impl<F> Unpin for TracingEventSender<F>
where F: Unpin,

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impl<F> UnwindSafe for TracingEventSender<F>
where F: UnwindSafe,

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, 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.