Data

Struct Data 

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pub struct Data<T>(/* private fields */);
Expand description

Extension data for tasks. This is commonly used to share state across tasks. or across layers within the same tasks

// Some shared state used throughout our application
struct State {
    // ...
}

async fn send_email(email: String, state: Data<Arc<State>>) {
     
}

let state = Arc::new(State { /* ... */ });
let backend = MemoryStorage::new();

let worker = WorkerBuilder::new("tasty-avocado")
    .backend(backend)
    .data(state)
    .build(send_email);

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impl<T> Data<T>

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pub fn new(inner: T) -> Self

Build a new data entry

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impl<T: Clone> Clone for Data<T>

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fn clone(&self) -> Data<T>

Returns a duplicate 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<T: Debug> Debug for Data<T>

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

Formats the value using the given formatter. Read more
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impl<T> Deref for Data<T>

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type Target = T

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl<T: Clone + Send + Sync + 'static, Args: Sync, Ctx: Sync, IdType: Sync + Send> FromRequest<Task<Args, Ctx, IdType>> for Data<T>

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type Error = MissingDataError

The error type that can occur during extraction.
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async fn from_request( task: &Task<Args, Ctx, IdType>, ) -> Result<Self, Self::Error>

Perform the extraction.
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impl<S, T> Layer<S> for Data<T>
where T: Clone + Send + Sync + 'static,

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type Service = AddExtension<S, T>

The wrapped service
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fn layer(&self, inner: S) -> Self::Service

Wrap the given service with the middleware, returning a new service that has been decorated with the middleware.
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impl<T: Copy> Copy for Data<T>

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impl<T> Freeze for Data<T>
where T: Freeze,

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impl<T> RefUnwindSafe for Data<T>
where T: RefUnwindSafe,

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impl<T> Send for Data<T>
where T: Send,

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impl<T> Sync for Data<T>
where T: Sync,

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impl<T> Unpin for Data<T>
where T: Unpin,

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impl<T> UnwindSafe for Data<T>
where T: UnwindSafe,

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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> 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>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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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.
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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>

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