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pub struct Layered<L, I, S = I> { /* private fields */ }
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A Subscriber composed of a Subscriber wrapped by one or more Layers.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

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. Read more

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

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

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

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

Notifies this layer that an event has occurred.

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

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

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

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

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

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

The type of span data stored in this registry.

Returns the SpanData for a given Id, if it exists. Read more

Returns a SpanRef for the span with the given Id, if it exists. Read more

Registers a new callsite with this subscriber, returning whether or not the subscriber is interested in being notified about the callsite. Read more

Returns true if a span or event with the specified metadata would be recorded. Read more

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

Visit the construction of a new span, returning a new span ID for the span being constructed. Read more

Record a set of values on a span. Read more

Adds an indication that span follows from the span with the id follows. Read more

Records that an Event has occurred. Read more

Records that a span has been entered. Read more

Records that a span has been exited. Read more

Notifies the subscriber that a span ID has been cloned. Read more

👎 Deprecated since 0.1.2:

use Subscriber::try_close instead

This method is deprecated. Read more

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

Returns a type representing this subscriber’s view of the current span. Read more

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

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Wraps self with the provided layer.

Sets self as the default subscriber in the current scope, returning a guard that will unset it when dropped. Read more

Attempts to set self as the global default subscriber in the current scope, returning an error if one is already set. Read more

Attempts to set self as the global default subscriber in the current scope, panicking if this fails. Read more

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.