Struct tracing_subscriber::reload::Handle

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pub struct Handle<L, S> { /* private fields */ }

Expand description

Allows reloading the state of an associated Layer.

Implementations

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impl<L, S> Handle<L, S> where
L: Layer<S> + 'static,
S: Subscriber,

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pub fn reload(&self, new_layer: impl Into<L>) -> Result<(), Error>

Replace the current layer with the provided new_layer.

Warning: The Filtered type currently can’t be changed at runtime via the Handle::reload method. Use the Handle::modify method to change the filter instead. (see https://github.com/tokio-rs/tracing/issues/1629)

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pub fn modify(&self, f: impl FnOnce(&mut L)) -> Result<(), Error>

Invokes a closure with a mutable reference to the current layer, allowing it to be modified in place.

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pub fn clone_current(&self) -> Option<L> where
L: Clone,

Returns a clone of the layer’s current value if it still exists. Otherwise, if the subscriber has been dropped, returns None.

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pub fn with_current<T>(&self, f: impl FnOnce(&L) -> T) -> Result<T, Error>

Invokes a closure with a borrowed reference to the current layer, returning the result (or an error if the subscriber no longer exists).

Trait Implementations

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impl<L, S> Clone for Handle<L, S>

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fn clone(&self) -> Self

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl<L: Debug, S: Debug> Debug for Handle<L, S>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl<L, S> RefUnwindSafe for Handle<L, S>

impl<L, S> Send for Handle<L, S> where
L: Send + Sync,

impl<L, S> Sync for Handle<L, S> where
L: Send + Sync,

impl<L, S> Unpin for Handle<L, S>

impl<L, S> UnwindSafe for Handle<L, S>

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,

const: unstable · source

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,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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,

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)

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

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

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct tracing_subscriber::reload::Handle

Implementations

impl<L, S> Handle<L, S> where
L: Layer<S> + 'static,
S: Subscriber,

pub fn reload(&self, new_layer: impl Into<L>) -> Result<(), Error>

pub fn modify(&self, f: impl FnOnce(&mut L)) -> Result<(), Error>

pub fn clone_current(&self) -> Option<L> where
L: Clone,

pub fn with_current<T>(&self, f: impl FnOnce(&L) -> T) -> Result<T, Error>

Trait Implementations

impl<L, S> Clone for Handle<L, S>

fn clone(&self) -> Self

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

impl<L: Debug, S: Debug> Debug for Handle<L, S>

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

Auto Trait Implementations

impl<L, S> RefUnwindSafe for Handle<L, S>

impl<L, S> Send for Handle<L, S> where
L: Send + Sync,

impl<L, S> Sync for Handle<L, S> where
L: Send + Sync,

impl<L, S> Unpin for Handle<L, S>

impl<L, S> UnwindSafe for Handle<L, S>

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where
T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Struct tracing_subscriber::reload::Handle

Implementations

impl<L, S> Handle<L, S> where L: Layer<S> + 'static, S: Subscriber,

pub fn reload(&self, new_layer: impl Into<L>) -> Result<(), Error>

pub fn modify(&self, f: impl FnOnce(&mut L)) -> Result<(), Error>

pub fn clone_current(&self) -> Option<L> where L: Clone,

pub fn with_current<T>(&self, f: impl FnOnce(&L) -> T) -> Result<T, Error>

Trait Implementations

impl<L, S> Clone for Handle<L, S>

fn clone(&self) -> Self

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

impl<L: Debug, S: Debug> Debug for Handle<L, S>

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

Auto Trait Implementations

impl<L, S> RefUnwindSafe for Handle<L, S>

impl<L, S> Send for Handle<L, S> where L: Send + Sync,

impl<L, S> Sync for Handle<L, S> where L: Send + Sync,

impl<L, S> Unpin for Handle<L, S>

impl<L, S> UnwindSafe for Handle<L, S>

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<L, S> Handle<L, S> where
L: Layer<S> + 'static,
S: Subscriber,

pub fn clone_current(&self) -> Option<L> where
L: Clone,

impl<L, S> Send for Handle<L, S> where
L: Send + Sync,

impl<L, S> Sync for Handle<L, S> where
L: Send + Sync,

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

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

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

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

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,