Struct ZLayerMetrics 

pub struct ZLayerMetrics {

    pub services_total: Gauge,
    pub service_replicas: GaugeVec,
    pub service_health: GaugeVec,
    pub scale_events_total: CounterVec,
    pub scale_up_total: Counter,
    pub scale_down_total: Counter,
    pub requests_total: CounterVec,
    pub request_duration_seconds: HistogramVec,
    pub raft_is_leader: Gauge,
    pub raft_term: Gauge,
    pub raft_commit_index: Gauge,
    pub uptime_seconds: Gauge,
    pub gpu_utilization: GaugeVec,
    pub gpu_memory_used: GaugeVec,
    pub gpu_memory_total: GaugeVec,
    pub gpu_temperature: GaugeVec,
    pub gpu_power: GaugeVec,
    /* private fields */
}

ZLayer metrics collection

Pre-defined metrics for the ZLayer system.

Fields

services_total: Gauge

Total number of registered services

service_replicas: GaugeVec

Current replica count per service

service_health: GaugeVec

Service health status (0=unknown, 1=healthy, 2=degraded, 3=unhealthy)

scale_events_total: CounterVec

Total scaling events by service and direction

scale_up_total: Counter

Total scale up events

scale_down_total: Counter

Total scale down events

requests_total: CounterVec

Total HTTP requests by method, path, and status

request_duration_seconds: HistogramVec

HTTP request duration in seconds

raft_is_leader: Gauge

Whether this node is the Raft leader (1) or not (0)

raft_term: Gauge

Current Raft term

raft_commit_index: Gauge

Current Raft commit index

uptime_seconds: Gauge

Time since the service started in seconds

gpu_utilization: GaugeVec

GPU utilization percentage per GPU index and node

gpu_memory_used: GaugeVec

GPU memory used in bytes per GPU index and node

gpu_memory_total: GaugeVec

GPU total memory in bytes per GPU index and node

gpu_temperature: GaugeVec

GPU temperature in celsius per GPU index and node

gpu_power: GaugeVec

GPU power draw in watts per GPU index and node

Implementations

impl ZLayerMetrics

pub fn new() -> Result<Self>

Create a new metrics collection

Errors

Returns an error if Prometheus metric creation or registration fails.

pub fn registry(&self) -> &Registry

Get the Prometheus registry

pub fn encode(&self) -> Result<String>

Encode metrics in Prometheus text format

Errors

Returns an error if metric encoding fails.

pub fn record_scale_event(&self, service: &str, direction: &str)

Record a scale event

pub fn set_replicas(&self, service: &str, count: u32)

Update service replica count

pub fn set_health(&self, service: &str, health: HealthStatus)

Update service health status

pub fn record_request( &self, method: &str, path: &str, status: u16, duration_secs: f64, )

Record an HTTP request

pub fn set_raft_leader(&self, is_leader: bool)

Update Raft leader status

pub fn set_raft_term(&self, term: u64)

Update Raft term

pub fn set_raft_commit_index(&self, index: u64)

Update Raft commit index

pub fn set_uptime(&self, seconds: f64)

Update uptime

pub fn set_gpu_utilization(&self, gpu_index: u32, node: &str, percent: f64)

Update GPU utilization percentage

pub fn set_gpu_memory_used(&self, gpu_index: u32, node: &str, bytes: u64)

Update GPU memory used in bytes

pub fn set_gpu_memory_total(&self, gpu_index: u32, node: &str, bytes: u64)

Update GPU total memory in bytes

pub fn set_gpu_temperature(&self, gpu_index: u32, node: &str, celsius: f64)

Update GPU temperature in celsius

pub fn set_gpu_power(&self, gpu_index: u32, node: &str, watts: f64)

Update GPU power draw in watts

Trait Implementations

impl Default for ZLayerMetrics

fn default() -> Self

Returns the “default value” for a type.