Enum ScaleTriggerKind 

pub enum ScaleTriggerKind {
    Queue {
        source: String,
        key: String,
        target: u64,
    },
    Kafka {
        brokers: String,
        topic: String,
        group: String,
        target: u64,
    },
    HttpRps {
        target: u32,
    },
    Prometheus {
        source: String,
        query: String,
        target: OrderedFloat<f64>,
    },
    Cron {
        schedule: String,
        duration: Option<Duration>,
    },
}

The concrete kind of an event-driven scaler.

Variants

Queue

Scale on the depth of a queue (Redis list, AMQP, SQS, …).

Fields

source: String

Connection/source URL of the queue backend.

key: String

Queue/key name to measure.

target: u64

Target depth handled per replica.

Kafka

Scale on a Kafka consumer-group lag.

Fields

brokers: String

Bootstrap brokers.

topic: String

Topic to measure.

group: String

Consumer group whose lag is measured.

target: u64

Target lag handled per replica.

HttpRps

Scale on observed requests-per-second from the proxy.

Fields

target: u32

Target RPS handled per replica.

Prometheus

Scale on a Prometheus query result.

Fields

source: String

Prometheus base URL.

query: String

PromQL query returning a scalar.

target: OrderedFloat<f64>

Target value handled per replica.

Cron

Maintain a replica floor during a recurring time window.

Fields

schedule: String

Cron schedule (start of the window).

duration: Option<Duration>

Window duration.

Trait Implementations

impl Clone for ScaleTriggerKind

fn clone(&self) -> ScaleTriggerKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScaleTriggerKind

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ScaleTriggerKind

fn deserialize<__D>( __deserializer: __D, ) -> Result<ScaleTriggerKind, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ScaleTriggerKind

impl PartialEq for ScaleTriggerKind

fn eq(&self, other: &ScaleTriggerKind) -> 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 ScaleTriggerKind

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ScaleTriggerKind