Struct Datacenter 

pub struct Datacenter { /* private fields */ }

One datacenter.

Mirrors struct datacenter. The preselected_rack_for_replication field is computed by crate::cluster::pool::ServerPool::preselect_remote_racks and reproduces the reference engine’s strategy of choosing one rack per remote DC for cross-DC writes.

Implementations

impl Datacenter

pub fn new(name: String) -> Self

Build an empty datacenter.

Examples

use dynomite::cluster::datacenter::Datacenter;
let dc = Datacenter::new("dc1".into());
assert_eq!(dc.name(), "dc1");

pub fn name(&self) -> &str

Datacenter name.

pub fn racks(&self) -> &[Rack]

Borrow the rack list.

pub fn racks_mut(&mut self) -> &mut [Rack]

Mutable rack list.

pub fn rack(&self, name: &str) -> Option<&Rack>

Find a rack by name.

pub fn rack_mut(&mut self, name: &str) -> Option<&mut Rack>

Mutably find a rack by name.

pub fn rack_idx(&self, name: &str) -> Option<usize>

Find a rack and return its index.

pub fn upsert_rack(&mut self, name: String) -> &mut Rack

Insert a rack if absent; return a mutable handle to the rack regardless. Mirrors server_get_rack.

pub fn sort_racks(&mut self)

Sort racks by name (ascending). Used by crate::cluster::pool::ServerPool::preselect_remote_racks and mirrors the array_sort(&dc->racks, rack_name_cmp) call in preselect_remote_rack_for_replication.

pub fn preselected_rack_idx(&self) -> Option<usize>

Preselected rack index for replicating writes from another DC into this DC.

pub fn preselected_rack(&self) -> Option<&Rack>

Borrow the preselected rack, if any.

pub fn set_preselected_rack_idx(&mut self, idx: Option<usize>)

Set the preselected rack index (used by the pool’s preselect_remote_racks pass).

Trait Implementations

impl Clone for Datacenter

fn clone(&self) -> Datacenter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Datacenter

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

Formats the value using the given formatter.

impl From<&Datacenter> for DatacenterSnapshot

fn from(dc: &Datacenter) -> Self

Converts to this type from the input type.