Struct TopologySnapshot 

pub struct TopologySnapshot { /* private fields */ }

Immutable topology snapshot with unique host identities.

Implementations

impl TopologySnapshot

pub fn new<I>(hosts: I) -> Result<Self, TopologyError>

where I: IntoIterator<Item = HostRecord>,

Builds a snapshot and rejects duplicate host identities.

pub fn revision(&self) -> &TopologyRevision

Returns the snapshot revision.

pub fn get(&self, id: &HostId) -> Option<&HostRecord>

Returns a host by stable identity.

pub fn hosts(&self) -> impl Iterator<Item = &HostRecord>

Iterates over hosts in identity order.

pub fn len(&self) -> usize

Returns the number of hosts.

pub fn is_empty(&self) -> bool

Returns whether the snapshot has no hosts.

Trait Implementations

impl Clone for TopologySnapshot

fn clone(&self) -> TopologySnapshot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TopologySnapshot

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TopologySnapshot

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for TopologySnapshot

fn eq(&self, other: &TopologySnapshot) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for TopologySnapshot

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for TopologySnapshot

impl StructuralPartialEq for TopologySnapshot