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Showing content from https://docs.rs/tracing-subscriber/latest/tracing_subscriber/filter/struct.LevelFilter.html below:

LevelFilter in tracing_subscriber::filter - Rust

pub struct LevelFilter();

A filter comparable to a verbosity Level.

If a Level is considered less than or equal to a LevelFilter, it should be considered enabled; if greater than the LevelFilter, that level is disabled. See LevelFilter::current for more details.

Note that this is essentially identical to the Level type, but with the addition of an OFF level that completely disables all trace instrumentation.

See the documentation for the Level type to see how Levels and LevelFilters interact.

The “off” level.

Designates that trace instrumentation should be completely disabled.

The “error” level.

Designates very serious errors.

The “warn” level.

Designates hazardous situations.

The “info” level.

Designates useful information.

The “debug” level.

Designates lower priority information.

The “trace” level.

Designates very low priority, often extremely verbose, information.

Returns a LevelFilter that enables spans and events with verbosity up to and including level.

Returns the most verbose Level that this filter accepts, or None if it is OFF.

Returns a LevelFilter that matches the most verbose Level that any currently active Subscriber will enable.

User code should treat this as a hint. If a given span or event has a level higher than the returned LevelFilter, it will not be enabled. However, if the level is less than or equal to this value, the span or event is not guaranteed to be enabled; the subscriber will still filter each callsite individually.

Therefore, comparing a given span or event’s level to the returned LevelFilter can be used for determining if something is disabled, but should not be used for determining if something is enabled.

The log type that this type can be converted into.

Returns the log equivalent of self.

Called before the filtered [

on_event

on_event` should be called.

Notifies this filter that a new span was constructed with the given

and

.

Notifies this filter that a span with the given

recorded the given

.

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

Notifies this filter that a span with the given ID was exited.

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

Converts to this type from the input type.

Converts to this type from the input type.

Converts to this type from the input type.

The associated error which can be returned from parsing.

Parses a string

to return a value of this type.

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

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

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

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.

Composes this layer around the given

, returning a

struct implementing

.

Tests for self and other values to be equal, and is used by ==.

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

Tests for self and other values to be equal, and is used by ==.

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

This method returns an ordering between

and

values if one exists.

Tests less than (for

and

) and is used by the

operator.

Tests less than or equal to (for

and

) and is used by the

operator.

Tests greater than (for

and

) and is used by the

operator.

Tests greater than or equal to (for

and

) and is used by the

operator.

This method returns an ordering between

and

values if one exists.

Tests less than (for

and

) and is used by the

operator.

Tests less than or equal to (for

and

) and is used by the

operator.

Tests greater than (for

and

) and is used by the

operator.

Tests greater than or equal to (for

and

) and is used by the

operator.

Performs copy-assignment from

to

.

Combines this

with another

s so that spans and events are enabled if and only if

filters return

.

Combines two

s so that spans and events are enabled if

filter returns

.

Inverts

, returning a filter that enables spans and events only if

would

enable them.

Returns the argument unchanged.

Calls U::from(self).

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

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning.

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

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.

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