Struct tracing_subscriber::fmt::writer::WithFilter[][src]

pub struct WithFilter<M, F> { /* fields omitted */ }
This is supported on crate feature fmt only.
Expand description

A MakeWriter combinator that wraps a MakeWriter with a predicate for span and event Metadata, so that the MakeWriter::make_writer_for method returns OptionalWriter::some when the predicate returns true, and OptionalWriter::none when the predicate returns false.

This is returned by the MakeWriterExt::with_filter method. See the method documentation for details.

Implementations

Wraps make with the provided filter, returning a MakeWriter that will call make.make_writer_for() when filter returns true for a span or event’s Metadata, and returns a sink otherwise.

See MakeWriterExt::with_filter for details.

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

The concrete io::Write implementation returned by make_writer. Read more

Returns an instance of Writer. Read more

Returns a Writer for writing data from the span or event described by the provided Metadata. Read more

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

This method tests for !=.

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.

This is supported on crate feature fmt only.

Wraps self and returns a MakeWriter that will only write output for events at or below the provided verbosity Level. For instance, Level::TRACE is considered to be _more verbosethanLevel::INFO`. Read more

This is supported on crate feature fmt only.

Wraps self and returns a MakeWriter that will only write output for events at or above the provided verbosity Level. Read more

This is supported on crate feature fmt only.

Wraps self with a predicate that takes a span or event’s Metadata and returns a bool. The returned MakeWriter’s MakeWriter::make_writer_for method will check the predicate to determine if a writer should be produced for a given span or event. Read more

This is supported on crate feature fmt only.

Combines self with another type implementing MakeWriter, returning a new MakeWriter that produces writers that write to both outputs. Read more

This is supported on crate feature fmt only.

Combines self with another type implementing MakeWriter, returning a new MakeWriter that calls other’s make_writer if self’s make_writer returns OptionalWriter::none. 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)

recently added

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.

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