pub enum Either<A, B> {
    A(A),
    B(B),
}
Available on crate feature util only.
Expand description

Combine two different service types into a single type.

Both services must be of the same request, response, and error types. Either is useful for handling conditional branching in service middleware to different inner service types.

Variants

A(A)

One type of backing Service.

B(B)

The other type of backing Service.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

The type of value produced on completion.

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more

The wrapped service

Wrap the given service with the middleware, returning a new service that has been decorated with the middleware. Read more

Responses given by the service.

Errors produced by the service.

The future response value.

Returns Poll::Ready(Ok(())) when the service is able to process requests. Read more

Process the request and return the response asynchronously. Read more

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.

Map this future’s output to a different type, returning a new future of the resulting type. Read more

Map this future’s output to a different type, returning a new future of the resulting type. Read more

Chain on a computation for when a future finished, passing the result of the future to the provided closure f. Read more

Wrap this future in an Either future, making it the left-hand variant of that Either. Read more

Wrap this future in an Either future, making it the right-hand variant of that Either. Read more

Convert this future into a single element stream. Read more

Flatten the execution of this future when the output of this future is itself another future. Read more

Flatten the execution of this future when the successful result of this future is a stream. Read more

Fuse a future such that poll will never again be called once it has completed. This method can be used to turn any Future into a FusedFuture. Read more

Do something with the output of a future before passing it on. Read more

Catches unwinding panics while polling the future. Read more

Create a cloneable handle to this future where all handles will resolve to the same result. Read more

Turn this future into a future that yields () on completion and sends its output to another future on a separate task. Read more

Wrap the future in a Box, pinning it. Read more

Wrap the future in a Box, pinning it. Read more

A convenience for calling Future::poll on Unpin future types.

Evaluates and consumes the future, returning the resulting output if the future is ready after the first call to Future::poll. Read more

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.

🔬 This is a nightly-only experimental API. (into_future)

The output that the future will produce on completion.

🔬 This is a nightly-only experimental API. (into_future)

Which kind of future are we turning this into?

🔬 This is a nightly-only experimental API. (into_future)

Creates a future from a value. Read more

Available on crate feature util only.

Yields a mutable reference to the service when it is ready to accept a request.

👎 Deprecated since 0.4.6:

please use the ServiceExt::ready method instead

Available on crate feature util only.

Yields a mutable reference to the service when it is ready to accept a request.

Available on crate feature util only.

Yields the service when it is ready to accept a request.

Available on crate feature util only.

Consume this Service, calling with the providing request once it is ready.

Available on crate feature util only.

Process all requests from the given Stream, and produce a Stream of their responses. Read more

Available on crate feature util only.

Executes a new future after this service’s future resolves. This does not alter the behaviour of the poll_ready method. Read more

Available on crate feature util only.

Maps this service’s response value to a different value. This does not alter the behaviour of the poll_ready method. Read more

Available on crate feature util only.

Maps this service’s error value to a different value. This does not alter the behaviour of the poll_ready method. Read more

Available on crate feature util only.

Maps this service’s result type (Result<Self::Response, Self::Error>) to a different value, regardless of whether the future succeeds or fails. Read more

Available on crate feature util only.

Composes a function in front of the service. Read more

Available on crate features util and filter only.

Composes this service with a Filter that conditionally accepts or rejects requests based on a predicate. Read more

Available on crate features util and filter only.

Composes this service with an AsyncFilter that conditionally accepts or rejects requests based on an [async predicate]. Read more

Available on crate feature util only.

Composes an asynchronous function after this service. Read more

Available on crate feature util only.

Composes a function that transforms futures produced by the service. Read more

Available on crate feature util only.

Convert the service into a Service + Send trait object. Read more

Available on crate feature util only.

Convert the service into a Service + Clone + Send trait object. Read more

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 of successful values yielded by this future

The type of failures yielded by this future

Poll this TryFuture as if it were a Future. Read more

Flattens the execution of this future when the successful result of this future is a [Sink]. Read more

Maps this future’s success value to a different value. Read more

Maps this future’s success value to a different value, and permits for error handling resulting in the same type. Read more

Maps this future’s error value to a different value. Read more

Maps this future’s Error to a new error type using the Into trait. Read more

Maps this future’s Ok to a new type using the Into trait. Read more

Executes another future after this one resolves successfully. The success value is passed to a closure to create this subsequent future. Read more

Executes another future if this one resolves to an error. The error value is passed to a closure to create this subsequent future. Read more

Do something with the success value of a future before passing it on. Read more

Do something with the error value of a future before passing it on. Read more

Flatten the execution of this future when the successful result of this future is another future. Read more

Flatten the execution of this future when the successful result of this future is a stream. Read more

Unwraps this future’s output, producing a future with this future’s Ok type as its Output type. Read more

Wraps a TryFuture into a type that implements Future. Read more

A convenience method for calling TryFuture::try_poll on Unpin future types. Read more

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