Struct futures_retry::FutureRetry
[−]
[src]
pub struct FutureRetry<F, R> where
F: FutureFactory, { /* fields omitted */ }
A future that transparently launches an underlying future (created by a provided factory each time) as many times as needed to get things done.
It is useful fot situations when you need to make several attempts, e.g. for establishing connections, RPC calls.
There is also a type to handle Stream
errors: StreamRetry
.
Methods
impl<F: FutureFactory, R> FutureRetry<F, R>
[src]
pub fn new<ExtErr>(factory: F, error_action: R) -> Self where
R: FnMut(<F::FutureItem as Future>::Error) -> RetryPolicy<ExtErr>,
[src]
R: FnMut(<F::FutureItem as Future>::Error) -> RetryPolicy<ExtErr>,
Creates a FutureRetry
using a provided factory and a closure that decides on a
retry-policy depending on an encountered error.
Please refer to the tcl-client
example in the examples
folder to have a look at a
possible usage.
Arguments
factory
: a factory that creates futures,error_action
: a closure that accepts and error and decides which route to take: simply try again, wait and then try, or give up (on a critical error for exapmle).
Trait Implementations
impl<F: FutureFactory, R, ExtErr> Future for FutureRetry<F, R> where
R: FnMut(<F::FutureItem as Future>::Error) -> RetryPolicy<ExtErr>,
[src]
R: FnMut(<F::FutureItem as Future>::Error) -> RetryPolicy<ExtErr>,
type Item = <<F as FutureFactory>::FutureItem as Future>::Item
The type of value that this future will resolved with if it is successful. Read more
type Error = ExtErr
The type of error that this future will resolve with if it fails in a normal fashion. Read more
fn poll(&mut self) -> Poll<Self::Item, Self::Error>
[src]
Query this future to see if its value has become available, registering interest if it is not. Read more
fn wait(self) -> Result<Self::Item, Self::Error>
[src]
Block the current thread until this future is resolved. Read more
fn map<F, U>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Item) -> U,
[src]
F: FnOnce(Self::Item) -> U,
Map this future's result to a different type, returning a new future of the resulting type. Read more
fn map_err<F, E>(self, f: F) -> MapErr<Self, F> where
F: FnOnce(Self::Error) -> E,
[src]
F: FnOnce(Self::Error) -> E,
Map this future's error to a different error, returning a new future. Read more
fn from_err<E>(self) -> FromErr<Self, E> where
E: From<Self::Error>,
[src]
E: From<Self::Error>,
Map this future's error to any error implementing From
for this future's Error
, returning a new future. Read more
fn then<F, B>(self, f: F) -> Then<Self, B, F> where
B: IntoFuture,
F: FnOnce(Result<Self::Item, Self::Error>) -> B,
[src]
B: IntoFuture,
F: FnOnce(Result<Self::Item, Self::Error>) -> B,
Chain on a computation for when a future finished, passing the result of the future to the provided closure f
. Read more
fn and_then<F, B>(self, f: F) -> AndThen<Self, B, F> where
B: IntoFuture<Error = Self::Error>,
F: FnOnce(Self::Item) -> B,
[src]
B: IntoFuture<Error = Self::Error>,
F: FnOnce(Self::Item) -> B,
Execute another future after this one has resolved successfully. Read more
fn or_else<F, B>(self, f: F) -> OrElse<Self, B, F> where
B: IntoFuture<Item = Self::Item>,
F: FnOnce(Self::Error) -> B,
[src]
B: IntoFuture<Item = Self::Item>,
F: FnOnce(Self::Error) -> B,
Execute another future if this one resolves with an error. Read more
fn select<B>(self, other: B) -> Select<Self, <B as IntoFuture>::Future> where
B: IntoFuture<Item = Self::Item, Error = Self::Error>,
[src]
B: IntoFuture<Item = Self::Item, Error = Self::Error>,
Waits for either one of two futures to complete. Read more
fn select2<B>(self, other: B) -> Select2<Self, <B as IntoFuture>::Future> where
B: IntoFuture,
[src]
B: IntoFuture,
Waits for either one of two differently-typed futures to complete. Read more
fn join<B>(self, other: B) -> Join<Self, <B as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
[src]
B: IntoFuture<Error = Self::Error>,
Joins the result of two futures, waiting for them both to complete. Read more
fn join3<B, C>(
self,
b: B,
c: C
) -> Join3<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
[src]
self,
b: B,
c: C
) -> Join3<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
Same as join
, but with more futures.
fn join4<B, C, D>(
self,
b: B,
c: C,
d: D
) -> Join4<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
[src]
self,
b: B,
c: C,
d: D
) -> Join4<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
Same as join
, but with more futures.
fn join5<B, C, D, E>(
self,
b: B,
c: C,
d: D,
e: E
) -> Join5<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future, <E as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
E: IntoFuture<Error = Self::Error>,
[src]
self,
b: B,
c: C,
d: D,
e: E
) -> Join5<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future, <E as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
E: IntoFuture<Error = Self::Error>,
Same as join
, but with more futures.
fn into_stream(self) -> IntoStream<Self>
[src]
Convert this future into a single element stream. Read more
fn flatten(self) -> Flatten<Self> where
Self::Item: IntoFuture,
<Self::Item as IntoFuture>::Error: From<Self::Error>,
[src]
Self::Item: IntoFuture,
<Self::Item as IntoFuture>::Error: From<Self::Error>,
Flatten the execution of this future when the successful result of this future is itself another future. Read more
fn flatten_stream(self) -> FlattenStream<Self> where
Self::Item: Stream,
<Self::Item as Stream>::Error == Self::Error,
[src]
Self::Item: Stream,
<Self::Item as Stream>::Error == Self::Error,
Flatten the execution of this future when the successful result of this future is a stream. Read more
fn fuse(self) -> Fuse<Self>
[src]
Fuse a future such that poll
will never again be called once it has completed. Read more
fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Item),
[src]
F: FnOnce(&Self::Item),
Do something with the item of a future, passing it on. Read more
fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
[src]
Self: UnwindSafe,
Catches unwinding panics while polling the future. Read more
[src]
Create a cloneable handle to this future where all handles will resolve to the same result. Read more
Auto Trait Implementations
impl<F, R> Send for FutureRetry<F, R> where
F: Send,
R: Send,
<F as FutureFactory>::FutureItem: Send,
F: Send,
R: Send,
<F as FutureFactory>::FutureItem: Send,
impl<F, R> Sync for FutureRetry<F, R> where
F: Sync,
R: Sync,
<F as FutureFactory>::FutureItem: Sync,
F: Sync,
R: Sync,
<F as FutureFactory>::FutureItem: Sync,