Struct Replica 

pub struct Replica {
    pub id: String,
    pub address: String,
    pub role: ReplicaRole,
    pub status: ReplicaStatus,
    pub lag_ms: u64,
    pub log_position: u64,
    pub last_heartbeat: DateTime<Utc>,
    pub priority: u32,
}

Represents a single replica in the replication topology

Fields

id: String

Unique identifier for the replica

address: String

Network address of the replica

role: ReplicaRole

Current role of the replica

status: ReplicaStatus

Current status of the replica

lag_ms: u64

Replication lag in milliseconds

log_position: u64

Last known position in the replication log

last_heartbeat: DateTime<Utc>

Last heartbeat timestamp

priority: u32

Priority for failover (higher is better)

Implementations

impl Replica

pub fn new( id: impl Into<String>, address: impl Into<String>, role: ReplicaRole, ) -> Self

Create a new replica

pub fn is_healthy(&self) -> bool

Check if the replica is healthy

pub fn is_readable(&self) -> bool

Check if the replica is available for reads

pub fn is_writable(&self) -> bool

Check if the replica is available for writes

pub fn update_lag(&mut self, lag_ms: u64)

Update the replica’s lag

pub fn update_position(&mut self, position: u64)

Update the replica’s log position

pub fn heartbeat(&mut self)

Record a heartbeat

pub fn is_timed_out(&self, timeout: Duration) -> bool

Check if the replica has timed out

Trait Implementations

impl Clone for Replica

fn clone(&self) -> Replica

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Replica

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Replica

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Replica

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

where __S: Serializer,

Serialize this value into the given Serde serializer.