Struct DnsResolver 

pub struct DnsResolver { /* private fields */ }

Available on crate feature client only.

A service discover implementation for DNS.

Implementations

impl DnsResolver

pub fn new(config: ResolverConfig, options: ResolverOpts) -> Self

Build a new DnsResolver through ResolverConfig and ResolverOpts.

For using system config, you can create a new instance by DnsResolver::default().

pub async fn resolve(&self, host: &str) -> Option<IpAddr>

Resolve a host to an IP address.

Trait Implementations

impl Clone for DnsResolver

fn clone(&self) -> DnsResolver

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for DnsResolver

fn default() -> Self

Returns the “default value” for a type.

impl Discover for DnsResolver

type Key = DiscoverKey

Key identifies a group of instances, such as the cluster name.

type Error = LoadBalanceError

Error is the discovery error.

async fn discover<'s>( &'s self, endpoint: &'s Endpoint, ) -> Result<Vec<Arc<Instance>>, Self::Error>

discover allows to request an endpoint and return a discover future.

fn key(&self, endpoint: &Endpoint) -> Self::Key

key should return a key suitable for cache.

fn watch(&self, _: Option<&[Self::Key]>) -> Option<Receiver<Change<Self::Key>>>

watch should return a async_broadcast::Receiver which can be used to subscribe Change.