Struct tower_balance::pool::PoolDiscoverer

[+] Show declaration

pub struct PoolDiscoverer<MS, Target, Request> where
    MS: MakeService<Target, Request>,  { /* fields omitted */ }

[−] Expand description

A wrapper around MakeService that discovers a new service when load is high, and removes a service when load is low. See Pool.

Trait Implementations

impl<MS, Target, Request> Debug for PoolDiscoverer<MS, Target, Request> where
    MS: MakeService<Target, Request> + Debug,
    Target: Debug, [+]

[+] Show hidden undocumented items

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

Formats the value using the given formatter.

impl<MS, Target, Request> Discover for PoolDiscoverer<MS, Target, Request> where
    MS: MakeService<Target, Request>,
    MS::MakeError: Into<Box<dyn Error + Send + Sync>>,
    MS::Error: Into<Box<dyn Error + Send + Sync>>,
    Target: Clone, [+]

[+] Show hidden undocumented items

type Key = usize

NewService key

type Service = DropNotifyService<MS::Service>

The type of Service yielded by this Discover.

type Error = MS::MakeError

Error produced during discovery

fn poll_discover(
    self: Pin<&mut Self>,
    cx: &mut Context<'_>
) -> Poll<Result<Change<Self::Key, Self::Service>, Self::Error>>[−]

Yields the next discovery change set.

impl<MS, Target, Request> PinnedDrop for PoolDiscoverer<MS, Target, Request> where
    MS: MakeService<Target, Request>, [+]

[+] Show hidden undocumented items

unsafe fn drop(self: Pin<&mut Self>)

impl<'pin, MS, Target, Request> Unpin for PoolDiscoverer<MS, Target, Request> where
    MS: MakeService<Target, Request>,
    __PoolDiscoverer<'pin, MS, Target, Request>: Unpin, 

impl<MS, Target, Request> UnsafeUnpin for PoolDiscoverer<MS, Target, Request> where
    MS: MakeService<Target, Request>,