Struct tracing_subscriber::fmt::Subscriber[][src]

pub struct Subscriber<N = DefaultFields, E = Format<Full>, F = LevelFilter, W = fn() -> Stdout> { /* fields omitted */ }
This is supported on crate feature fmt only.
Expand description

A Subscriber that logs formatted representations of tracing events.

This consists of an inner Formatter wrapped in a layer that performs filtering.

Implementations

The maximum verbosity level that is enabled by a Subscriber by default.

This can be overridden with the SubscriberBuilder::with_max_level method.

Returns a new SubscriberBuilder for configuring a format subscriber.

Returns a new format subscriber with the default configuration.

Trait Implementations

Formats the value using the given formatter. Read more

Returns the “default value” for a type. 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

This is supported on crate feature registry only.

Registers a Filter for per-layer filtering with this Subscriber. 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

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

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

Notifies the subscriber that a span ID has been cloned. 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 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

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

👎 Deprecated since 0.1.2:

use Subscriber::try_close instead

This method is deprecated. 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

Performs the conversion.

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

Performs the conversion.

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 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.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more