Struct tracing::level_filters::LevelFilter[][src]

#[repr(transparent)]
pub struct LevelFilter(_);
Expand description

A filter comparable to a verbosity Level.

If a Level is considered less than a LevelFilter, it should be considered enabled; if greater than or equal to 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.

Implementations

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 collector 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 collector 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.

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

Formats the value using the given formatter. Read more

Performs the conversion.

Performs the conversion.

The associated error which can be returned from parsing.

Parses a string s to return a value of this type. Read more

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

This method returns an ordering between self and other values if one exists. Read more

This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

This method returns an ordering between self and other values if one exists. Read more

This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

This method returns an ordering between self and other values if one exists. Read more

This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. 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.

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)

recently added

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Converts the given value to a String. 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.

This is supported on crate feature std only.

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

This is supported on crate feature std only.

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