zng_ext_config

Struct SwapConfig

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

Represents a config source that can swap its backing config source without disconnecting any bound keys.

Note that the CONFIG service already uses this type internally.

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impl SwapConfig

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pub fn new() -> Self

New with MemoryConfig backend.

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pub fn load(&mut self, cfg: impl AnyConfig)

Load the config.

The previous source will be dropped and all active config variables are set and rebound to the new config.

Trait Implementations§

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impl AnyConfig for SwapConfig

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fn get_raw( &mut self, key: ConfigKey, default: RawConfigValue, insert: bool, shared: bool, ) -> BoxedVar<RawConfigValue>

Gets a weak typed variable to the config key. Read more
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fn contains_key(&mut self, key: ConfigKey) -> BoxedVar<bool>

Gets a read-only variable that tracks if an entry for the key is in the backing storage.
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fn status(&self) -> BoxedVar<ConfigStatus>

Gets a read-only variable that represents the IO status of the config.
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fn remove(&mut self, key: &ConfigKey) -> bool

Removes the key from the backing storage. Read more
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fn low_memory(&mut self)

Cleanup and flush RAM caches.
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impl Config for SwapConfig

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fn get<T: ConfigValue>( &mut self, key: impl Into<ConfigKey>, default: T, insert: bool, ) -> BoxedVar<T>

Gets a variable that is bound to the config key. Read more
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impl Default for SwapConfig

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fn default() -> Self

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

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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

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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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. 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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

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impl<T> StateValue for T
where T: Any + Send + Sync,