pub struct StateMiddleware<T>where
    T: Clone + RefUnwindSafe + StateData + Sync,
{ /* private fields */ }
Expand description

Middleware binding for generic types to enable easy shared state.

This acts as nothing more than a Middleware instance which will attach a generic type to a request State, however it removes a barrier for users to Gotham who might not know the internals.

The generic types inside this struct can (and will) be cloned often, so wrap your expensive types in reference counts as needed.

Implementations

Main implementation.

Creates a new middleware binding, taking ownership of the state data.

Trait Implementations

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more

Middleware trait implementation.

Attaches the inner generic value to the request state.

This will enable the Handler to borrow the value directly from the state.

NewMiddleware trait implementation.

Clones the current middleware to a new instance.

The type of Middleware created by the NewMiddleware.

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

Returns the argument unchanged.

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

Calls U::from(self).

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

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
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