Struct LogSpecBuilder

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pub struct LogSpecBuilder { /* private fields */ }
Expand description

Builder for LogSpecification.

§Example

Start with a programmatically built log specification, and use the LoggerHandle to apply a modified version of the log specification at a later point in time:

use flexi_logger::{Logger, LogSpecification};
use log::LevelFilter;

fn main() {
    // Build the initial log specification
    let mut builder = LogSpecification::builder();
    builder
        .default(LevelFilter::Info)
        .module("karl", LevelFilter::Debug);

    // Initialize Logger, keep builder alive
    let mut logger = Logger::with(builder.build())
        // your logger configuration goes here, as usual
        .start()
        .unwrap_or_else(|e| panic!("Logger initialization failed with {}", e));

    // ...

    // Modify builder and update the logger
    builder
        .default(LevelFilter::Error)
        .remove("karl")
        .module("emma", LevelFilter::Trace);

    logger.set_new_spec(builder.build());

    // ...
}

Implementations§

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impl LogSpecBuilder

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pub fn new() -> LogSpecBuilder

Creates a LogSpecBuilder with all logging turned off.

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pub fn from_module_filters(module_filters: &[ModuleFilter]) -> LogSpecBuilder

Creates a LogSpecBuilder from given module filters.

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pub fn default(&mut self, lf: LevelFilter) -> &mut LogSpecBuilder

Adds a default log level filter, or updates the default log level filter.

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pub fn module<M>( &mut self, module_name: M, lf: LevelFilter, ) -> &mut LogSpecBuilder
where M: AsRef<str>,

Adds a log level filter, or updates the log level filter, for a module.

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pub fn remove<M>(&mut self, module_name: M) -> &mut LogSpecBuilder
where M: AsRef<str>,

Adds a log level filter, or updates the log level filter, for a module.

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pub fn insert_modules_from( &mut self, other: LogSpecification, ) -> &mut LogSpecBuilder

Adds log level filters from a LogSpecification.

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pub fn finalize(self) -> LogSpecification

Creates a log specification without text filter.

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pub fn build(&self) -> LogSpecification

Creates a log specification without being consumed.

Trait Implementations§

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impl Clone for LogSpecBuilder

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fn clone(&self) -> LogSpecBuilder

Returns a copy of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for LogSpecBuilder

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for LogSpecBuilder

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fn default() -> LogSpecBuilder

Returns the “default value” for a type. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.