Struct MetricSet

pub struct MetricSet { /* private fields */ }

Dual-limit cache using standard LRU with optional capacity and TTL policies.

This implementation uses the standard LRU crate with optional enforcement of both memory and entry count limits via CapacityPolicy, plus optional TTL via TtlPolicy.

Implementations

impl MetricSet

pub fn new(settings: MetricSetSettings) -> Self

Creates a new MetricSet with the given settings.

pub fn with_policies( capacity_policy: Option<CapacityPolicy>, ttl_policy: Option<TtlPolicy>, ) -> Self

Creates a new MetricSet with the given policies.

pub const fn capacity_policy(&self) -> Option<&CapacityPolicy>

Gets the current capacity policy.

pub const fn ttl_policy(&self) -> Option<&TtlPolicy>

Gets the current TTL policy.

pub const fn ttl_policy_mut(&mut self) -> Option<&mut TtlPolicy>

Gets a mutable reference to the TTL policy configuration.

pub fn len(&self) -> usize

Gets the current number of entries in the cache.

pub fn is_empty(&self) -> bool

Returns true if the cache contains no entries.

pub fn weighted_size(&self) -> u64

Gets the current memory usage in bytes.

pub fn into_metrics(self) -> Vec<Metric>

Consumes this MetricSet and returns a vector of Metric.

pub fn make_absolute(&mut self, metric: Metric) -> Option<Metric>

Either pass the metric through as-is if absolute, or convert it to absolute if incremental.

pub fn make_incremental(&mut self, metric: Metric) -> Option<Metric>

Either convert the metric to incremental if absolute, or aggregate it with any previous value if already incremental.

pub fn insert_update(&mut self, metric: Metric)

pub fn remove(&mut self, series: &MetricSeries) -> bool

Removes a series from the cache.

If the series existed and was removed, returns true. Otherwise, false.

Trait Implementations

impl Clone for MetricSet

fn clone(&self) -> MetricSet

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MetricSet

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

Formats the value using the given formatter.

impl Default for MetricSet

fn default() -> Self

Returns the “default value” for a type.