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    #OpenTelemetry Metrics SDK

    This package implements synchronous and observable metric instruments, exporters, views, and reader coordination.

    #Main types

    • SdkMeterProvider: owns resource, exporters, and readers
    • SdkMeter: creates instruments scoped to a name/version/schema URL
    • Counter, UpDownCounter, Histogram, Gauge: supported synchronous instruments
    • ObservableCounter, ObservableUpDownCounter, ObservableGauge: callback driven instruments sampled during collection
    • ManualReader: pulls a snapshot on demand
    • PeriodicMetricReader: pushes snapshots on an interval
    • Temporality: selects cumulative vs delta style reporting for readers
    • Stream, StreamBuilder: view output configuration for renaming, attribute filtering, and cardinality limits
    • MetricExporter, InMemoryMetricExporter: exporter abstraction and test helper

    #Aggregation model

    The current implementation stores one point per unique attribute set and emits one of these aggregations:

    • Aggregation::Sum
    • Aggregation::Gauge
    • Aggregation::Histogram

    Histograms keep count, sum, min, and max. They do not currently compute bucket boundaries.

    #Reader behavior

    ManualReader::builder() creates a detached reader that can be registered with SdkMeterProviderBuilder::with_reader(). SdkMeterProvider::manual_reader() remains as a convenience for creating a reader directly from an existing provider.

    ManualReader::collect_result() is the lifecycle-aware pull API. It returns an error after shutdown and also reports detached readers that were never registered with a provider.

    ManualReader::collect() remains the convenience wrapper. It returns [] when collection is unavailable, including after shutdown.

    ManualReader::force_flush() is a no-op and always succeeds because the reader does not own exporters or background work.

    PeriodicMetricReader::builder(exporter) creates a detached push reader that can be registered with SdkMeterProviderBuilder::with_periodic_reader(). with_periodic_exporter() remains as the convenience shortcut.

    Both reader builders support with_temporality():

    • Temporality::Cumulative
    • Temporality::Delta
    • Temporality::LowMemory

    SdkMeterProvider::force_flush() collects a fresh snapshot, exports it through every registered exporter, and then asks each exporter to flush.

    PeriodicMetricReader::run() performs the same collection/export cycle on a timer. Like the trace and log batch processors, it must be spawned explicitly.

    When with_periodic_exporter() is used without an explicit interval, the reader defaults from OTEL_METRIC_EXPORT_INTERVAL.

    Delta temporality currently applies to sum-like streams and the simplified histogram summary model used in this package. Histogram deltas reuse the current cycle's min/max because the implementation does not yet store full bucket state.

    Counter::add() now ignores negative deltas so the instrument remains monotonic.

    Observable callbacks run during each collect() / periodic export cycle. Their last values are cleared before each run so gauges and counters report the current callback result instead of accumulating stale points forever.

    with_view() currently supports per-instrument stream renaming, aggregation override, attribute allow-lists, and cardinality limits.

    StreamBuilder::with_aggregation() supports these modes:

    • StreamAggregation::Default
    • StreamAggregation::Drop
    • StreamAggregation::Sum
    • StreamAggregation::LastValue
    • StreamAggregation::Histogram

    Drop suppresses the matching stream entirely. Sum, LastValue, and Histogram remap the recorded measurements into the selected aggregation without changing the instrument name or scope unless the view also overrides those fields.

    View

    source
    type View = (Instrument) -> Stream?

    View callback used to transform metric streams during instrument creation. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#view

    Aggregation

    source
    pub(all) enum Aggregation {
      Sum(Number)
      Gauge(Number)
      Histogram(HistogramSummary)
    } derive(Eq, ToJson, 
    Debug    )

    Aggregated metric payload for one attribute set. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#aggregation

    Counter

    source
    pub struct Counter {
      state : 
    Ref    [SyncInstrumentState]
    }

    Counter instrument handle. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#counter

    Counter::add

    source

    Adds a delta to the counter for one attribute set.

    Negative values are ignored because counters are monotonic. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    CounterBuilder

    source
    pub struct CounterBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
    }

    Builder for a monotonic counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    CounterBuilder::build

    source

    Builds the counter instrument and registers it with the provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    CounterBuilder::with_description

    source
    fn CounterBuilder::with_description(self : CounterBuilder, description : StringView) -> CounterBuilder

    Sets the instrument description. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    CounterBuilder::with_unit

    source
    fn CounterBuilder::with_unit(self : CounterBuilder, unit : StringView) -> CounterBuilder

    Sets the instrument unit. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    DoubleCounter

    source
    pub struct DoubleCounter {
      state : 
    Ref    [SyncInstrumentState]
    }

    Floating-point counter instrument handle. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#counter

    DoubleCounter::add

    source

    Adds a floating-point delta to the counter for one attribute set. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    DoubleCounterBuilder

    source
    pub struct DoubleCounterBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
    }

    Builder for a monotonic floating-point counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    DoubleCounterBuilder::build

    source

    Builds the floating-point counter instrument and registers it with the provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    DoubleCounterBuilder::with_description

    source
    fn DoubleCounterBuilder::with_description(self : DoubleCounterBuilder, description : StringView) -> DoubleCounterBuilder

    Sets the instrument description. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    DoubleCounterBuilder::with_unit

    source
    fn DoubleCounterBuilder::with_unit(self : DoubleCounterBuilder, unit : StringView) -> DoubleCounterBuilder

    Sets the instrument unit. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    DoubleUpDownCounter

    source
    pub struct DoubleUpDownCounter {
      state : 
    Ref    [SyncInstrumentState]
    }

    Floating-point up-down counter instrument handle. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#updowncounter

    DoubleUpDownCounter::add

    source

    Adds a floating-point delta to the up-down counter for one attribute set. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    DoubleUpDownCounterBuilder

    source
    pub struct DoubleUpDownCounterBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
    }

    Builder for a signed floating-point counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    DoubleUpDownCounterBuilder::build

    source

    Builds the floating-point up-down counter instrument and registers it with the provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    DoubleUpDownCounterBuilder::with_description

    source
    fn DoubleUpDownCounterBuilder::with_description(self : DoubleUpDownCounterBuilder, description : StringView) -> DoubleUpDownCounterBuilder

    Sets the instrument description. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    DoubleUpDownCounterBuilder::with_unit

    source

    Sets the instrument unit. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    Gauge

    source

    Gauge instrument handle. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#gauge

    Gauge::record

    source
    fn Gauge::record(self : Gauge, value : Double, attributes? : ArrayView[
    KeyValue    ]) -> Unit

    Records the latest gauge value for an attribute set. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    GaugeBuilder

    source
    pub struct GaugeBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
    }

    Builder for a gauge instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    GaugeBuilder::build

    source
    fn GaugeBuilder::build(self : GaugeBuilder) -> Gauge

    Builds the gauge instrument and registers it with the provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    GaugeBuilder::with_description

    source
    fn GaugeBuilder::with_description(self : GaugeBuilder, description : StringView) -> GaugeBuilder

    Sets the instrument description. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    GaugeBuilder::with_unit

    source
    fn GaugeBuilder::with_unit(self : GaugeBuilder, unit : StringView) -> GaugeBuilder

    Sets the instrument unit. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    Histogram

    source
    pub struct Histogram {
      state : 
    Ref    [SyncInstrumentState]
    }

    Histogram instrument handle. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#histogram

    Histogram::record

    source
    fn Histogram::record(self : Histogram, value : Double, attributes? : ArrayView[
    KeyValue    ]) -> Unit

    Records one histogram sample for an attribute set. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    HistogramBuilder

    source
    pub struct HistogramBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
    }

    Builder for a histogram instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    HistogramBuilder::build

    source

    Builds the histogram instrument and registers it with the provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    HistogramBuilder::with_description

    source
    fn HistogramBuilder::with_description(self : HistogramBuilder, description : StringView) -> HistogramBuilder

    Sets the instrument description. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    HistogramBuilder::with_unit

    source
    fn HistogramBuilder::with_unit(self : HistogramBuilder, unit : StringView) -> HistogramBuilder

    Sets the instrument unit. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    HistogramSummary

    source
    pub struct HistogramSummary {
      count : Int64
      sum : Number
      min : Number?
      max : Number?
    } derive(Eq, ToJson, 
    Debug    )

    Compact histogram summary emitted by the current implementation. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#aggregation

    InMemoryMetricExporter

    source
    pub struct InMemoryMetricExporter {
      state : 
    Ref    [InMemoryMetricExporterState]
    }

    Test exporter that keeps finished metrics in memory. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk_exporters/in-memory/#metrics-exporter---in-memory

    InMemoryMetricExporter::finished_metrics

    source

    Returns the finished metrics accumulated so far. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk_exporters/in-memory/#metrics-exporter---in-memory

    InMemoryMetricExporter::into_metric_exporter

    source

    Erases the concrete in-memory exporter type into MetricExporter. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk_exporters/in-memory/#metrics-exporter---in-memory

    InMemoryMetricExporter::new

    source

    Creates an empty in-memory metric exporter. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk_exporters/in-memory/#metrics-exporter---in-memory

    InMemoryMetricExporter::reset

    source

    Clears the in-memory metric buffer. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk_exporters/in-memory/#metrics-exporter---in-memory

    InMemoryMetricExporterState

    source
    type InMemoryMetricExporterState

    Instrument

    source
    pub struct Instrument {
      name : String
      description : String?
      unit : String?
      kind : InstrumentKind
      instrumentation_scope : 
    InstrumentationScope
    } derive(Eq, ToJson, 
    Debug    )

    Instrument metadata used by views to match and transform streams. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#view

    InstrumentKind

    source
    pub(all) enum InstrumentKind {
      Counter
      UpDownCounter
      Histogram
      Gauge
      ObservableCounter
      ObservableUpDownCounter
      ObservableGauge
    } derive(Compare, Eq, Hash, ToJson, 
    Debug    )

    Supported metric instrument kinds.

    Instrument kind is part of stream identity and controls the default aggregation selected by the SDK. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ManualReader

    source
    pub struct ManualReader {
      state : 
    Ref    [ManualReaderState]
    }

    Pull-based metric reader that snapshots the provider on demand.

    Use this in tests or integrations that want explicit collection instead of a background export loop. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    ManualReader::builder

    source

    Creates a detached manual reader that can later be registered with a provider using SdkMeterProviderBuilder::with_reader(). Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    ManualReader::collect

    source
    fn ManualReader::collect(self : ManualReader) -> Array[MetricData]

    Pulls a metric snapshot from the provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    ManualReader::collect_result

    source

    Pulls a metric snapshot from the provider and returns lifecycle failures. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    ManualReader::force_flush

    source

    Manual readers do not own exporters, so force_flush is a no-op.

    ManualReader::shutdown

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#shutdown

    ManualReader::shutdown_with_timeout

    source
    async fn ManualReader::shutdown_with_timeout(self : ManualReader, timeout_millis : Int) -> Result[Unit, 
    OTelSdkError    ]

    Detaches the reader from the provider.

    ManualReaderBuilder

    source
    pub struct ManualReaderBuilder {
      temporality : Temporality
    }

    Builder for ManualReader. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    ManualReaderBuilder::build

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    ManualReaderBuilder::with_temporality

    source
    fn ManualReaderBuilder::with_temporality(self : ManualReaderBuilder, temporality : Temporality) -> ManualReaderBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    ManualReaderState

    source
    type ManualReaderState

    MeterProviderState

    source
    type MeterProviderState

    MetricData

    source

    Immutable metric data item exported from a meter provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    MetricExporter

    source
    pub struct MetricExporter {
      export_fn : async (ArrayView[MetricData]) -> Result[Unit, 
    OTelSdkError    ]
      force_flush_fn : async () -> Result[Unit, 
    OTelSdkError    ]
      shutdown_fn : async () -> Result[Unit, 
    OTelSdkError    ]
      name_fn : () -> String
    }

    Exporter callback wrapper for metric batches. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricexporter

    MetricExporter::export_batch

    source

    Exports one batch of metrics. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#exportbatch

    MetricExporter::force_flush

    source

    Requests exporter flush. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#forceflush

    MetricExporter::name

    source
    fn MetricExporter::name(self : MetricExporter) -> String

    Returns a human-readable exporter name. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricexporter

    MetricExporter::new

    source
    fn MetricExporter::new(export_fn : async (ArrayView[MetricData]) -> Result[Unit, 
    OTelSdkError    ], force_flush_fn? : async () -> Result[Unit, 
    OTelSdkError    ], shutdown_fn? : async () -> Result[Unit, 
    OTelSdkError    ], name_fn? : () -> String) -> MetricExporter

    Builds a metric exporter from callbacks. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricexporter

    MetricExporter::shutdown

    source

    Requests exporter shutdown. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#shutdown

    MetricExporter::shutdown_with_timeout

    source
    async fn MetricExporter::shutdown_with_timeout(self : MetricExporter, timeout_millis : Int) -> Result[Unit, 
    OTelSdkError    ]

    Requests exporter shutdown with an optional timeout budget in milliseconds. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#shutdown

    Number

    source
    pub(all) enum Number {
      Int64(Int64)
      UInt64(UInt64)
      Double(Double)
    } derive(Eq, ToJson, 
    Debug    )

    Numeric value stored inside metric aggregations. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#aggregation

    ObservableCounter

    source
    pub struct ObservableCounter {
      state : 
    Ref    [SyncInstrumentState]
    }

    Observable counter instrument handle passed to callbacks. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-counter

    ObservableCounter::observe

    source

    Observes one value for an observable counter during callback execution. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    ObservableCounterBuilder

    source
    pub struct ObservableCounterBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
      callbacks : Array[(ObservableCounter) -> Unit]
    }

    Builder for an observable monotonic counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableCounterBuilder::build

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableCounterBuilder::with_callback

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableCounterBuilder::with_description

    source
    fn ObservableCounterBuilder::with_description(self : ObservableCounterBuilder, description : StringView) -> ObservableCounterBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    ObservableCounterBuilder::with_unit

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    ObservableDoubleCounter

    source
    pub struct ObservableDoubleCounter {
      state : 
    Ref    [SyncInstrumentState]
    }

    Observable floating-point counter instrument handle passed to callbacks. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-counter

    ObservableDoubleCounter::observe

    source

    Observes one floating-point value for an observable counter during callback execution. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    ObservableDoubleCounterBuilder

    source
    pub struct ObservableDoubleCounterBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
      callbacks : Array[(ObservableDoubleCounter) -> Unit]
    }

    Builder for an observable monotonic floating-point counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableDoubleCounterBuilder::build

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableDoubleCounterBuilder::with_callback

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableDoubleCounterBuilder::with_description

    source
    fn ObservableDoubleCounterBuilder::with_description(self : ObservableDoubleCounterBuilder, description : StringView) -> ObservableDoubleCounterBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    ObservableDoubleCounterBuilder::with_unit

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    ObservableDoubleUpDownCounter

    source
    pub struct ObservableDoubleUpDownCounter {
      state : 
    Ref    [SyncInstrumentState]
    }

    Observable floating-point up-down counter instrument handle passed to callbacks. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-updowncounter

    ObservableDoubleUpDownCounter::observe

    source

    Observes one floating-point value for an observable up-down counter during callback execution. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    ObservableDoubleUpDownCounterBuilder

    source
    pub struct ObservableDoubleUpDownCounterBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
      callbacks : Array[(ObservableDoubleUpDownCounter) -> Unit]
    }

    Builder for an observable signed floating-point counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableDoubleUpDownCounterBuilder::build

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableDoubleUpDownCounterBuilder::with_callback

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableDoubleUpDownCounterBuilder::with_description

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    ObservableDoubleUpDownCounterBuilder::with_unit

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    ObservableGauge

    source
    pub struct ObservableGauge {
      state : 
    Ref    [SyncInstrumentState]
    }

    Observable gauge instrument handle passed to callbacks. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-gauge

    ObservableGauge::observe

    source

    Observes one value for an observable gauge during callback execution. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    ObservableGaugeBuilder

    source
    pub struct ObservableGaugeBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
      callbacks : Array[(ObservableGauge) -> Unit]
    }

    Builder for an observable gauge instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableGaugeBuilder::build

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableGaugeBuilder::with_callback

    source
    fn ObservableGaugeBuilder::with_callback(self : ObservableGaugeBuilder, callback : (ObservableGauge) -> Unit) -> ObservableGaugeBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableGaugeBuilder::with_description

    source
    fn ObservableGaugeBuilder::with_description(self : ObservableGaugeBuilder, description : StringView) -> ObservableGaugeBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    ObservableGaugeBuilder::with_unit

    source
    fn ObservableGaugeBuilder::with_unit(self : ObservableGaugeBuilder, unit : StringView) -> ObservableGaugeBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    ObservableUInt64Counter

    source
    pub struct ObservableUInt64Counter {
      state : 
    Ref    [SyncInstrumentState]
    }

    Unsigned observable counter instrument handle passed to callbacks. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-counter

    ObservableUInt64Counter::observe

    source

    Observes one unsigned value for an observable counter during callback execution. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    ObservableUInt64CounterBuilder

    source
    pub struct ObservableUInt64CounterBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
      callbacks : Array[(ObservableUInt64Counter) -> Unit]
    }

    Builder for an unsigned observable monotonic counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableUInt64CounterBuilder::build

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableUInt64CounterBuilder::with_callback

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableUInt64CounterBuilder::with_description

    source
    fn ObservableUInt64CounterBuilder::with_description(self : ObservableUInt64CounterBuilder, description : StringView) -> ObservableUInt64CounterBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    ObservableUInt64CounterBuilder::with_unit

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    ObservableUInt64Gauge

    source
    pub struct ObservableUInt64Gauge {
      state : 
    Ref    [SyncInstrumentState]
    }

    Unsigned observable gauge instrument handle passed to callbacks. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-gauge

    ObservableUInt64Gauge::observe

    source

    Observes one unsigned value for an observable gauge during callback execution. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    ObservableUInt64GaugeBuilder

    source
    pub struct ObservableUInt64GaugeBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
      callbacks : Array[(ObservableUInt64Gauge) -> Unit]
    }

    Builder for an unsigned observable gauge instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableUInt64GaugeBuilder::build

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableUInt64GaugeBuilder::with_callback

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableUInt64GaugeBuilder::with_description

    source
    fn ObservableUInt64GaugeBuilder::with_description(self : ObservableUInt64GaugeBuilder, description : StringView) -> ObservableUInt64GaugeBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    ObservableUInt64GaugeBuilder::with_unit

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    ObservableUpDownCounter

    source
    pub struct ObservableUpDownCounter {
      state : 
    Ref    [SyncInstrumentState]
    }

    Observable up-down counter instrument handle passed to callbacks. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-updowncounter

    ObservableUpDownCounter::observe

    source

    Observes one value for an observable up-down counter during callback execution. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    ObservableUpDownCounterBuilder

    source
    pub struct ObservableUpDownCounterBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
      callbacks : Array[(ObservableUpDownCounter) -> Unit]
    }

    Builder for an observable signed counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableUpDownCounterBuilder::build

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableUpDownCounterBuilder::with_callback

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    ObservableUpDownCounterBuilder::with_description

    source
    fn ObservableUpDownCounterBuilder::with_description(self : ObservableUpDownCounterBuilder, description : StringView) -> ObservableUpDownCounterBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    ObservableUpDownCounterBuilder::with_unit

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    PeriodicMetricReader

    source
    pub struct PeriodicMetricReader {
      state : 
    Ref    [PeriodicMetricReaderState]
    }

    Push-style metric reader that exports snapshots on an interval.

    The interval loop is not started automatically. Register the provider and call spawn_periodic_readers() or the facade/global equivalent. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#periodic-exporting-metricreader

    PeriodicMetricReader::builder

    source

    Creates a detached periodic reader around the supplied exporter. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#periodic-exporting-metricreader

    PeriodicMetricReader::collect

    source

    Collects one snapshot for this reader and applies its temporality policy. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#periodic-exporting-metricreader

    PeriodicMetricReader::force_flush

    source

    Exports one temporality-adjusted snapshot immediately. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#forceflush

    PeriodicMetricReader::run

    source
    async fn PeriodicMetricReader::run(self : PeriodicMetricReader) -> Unit

    Background loop for periodic metric collection and export. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#periodic-exporting-metricreader

    PeriodicMetricReader::shutdown

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#shutdown

    PeriodicMetricReader::shutdown_with_timeout

    source
    async fn PeriodicMetricReader::shutdown_with_timeout(self : PeriodicMetricReader, timeout_millis : Int) -> Result[Unit, 
    OTelSdkError    ]

    Shuts down the periodic reader and its exporter. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#shutdown

    PeriodicMetricReaderBuilder

    source
    pub struct PeriodicMetricReaderBuilder {
      exporter : MetricExporter
      interval_millis : Int
      temporality : Temporality
    }

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#periodic-exporting-metricreader

    PeriodicMetricReaderBuilder::build

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#periodic-exporting-metricreader

    PeriodicMetricReaderBuilder::with_interval

    source
    fn PeriodicMetricReaderBuilder::with_interval(self : PeriodicMetricReaderBuilder, interval_millis : Int) -> PeriodicMetricReaderBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#periodic-exporting-metricreader

    PeriodicMetricReaderBuilder::with_temporality

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#periodic-exporting-metricreader

    PeriodicMetricReaderState

    source
    type PeriodicMetricReaderState

    SdkMeter

    source

    Meter scoped to one instrumentation library.

    Meters create instruments. Instruments should usually be built once and reused on hot paths. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#meter

    SdkMeter::counter

    source
    fn SdkMeter::counter(self : SdkMeter, name : StringView) -> CounterBuilder

    Starts building a counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#counter-creation

    SdkMeter::f64_counter

    source
    fn SdkMeter::f64_counter(self : SdkMeter, name : StringView) -> DoubleCounterBuilder

    Starts building a floating-point counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#counter-creation

    SdkMeter::f64_observable_counter

    source
    fn SdkMeter::f64_observable_counter(self : SdkMeter, name : StringView) -> ObservableDoubleCounterBuilder

    Starts building an observable floating-point counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-counter-creation

    SdkMeter::f64_observable_up_down_counter

    source
    fn SdkMeter::f64_observable_up_down_counter(self : SdkMeter, name : StringView) -> ObservableDoubleUpDownCounterBuilder

    Starts building an observable floating-point up-down counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-updowncounter-creation

    SdkMeter::f64_up_down_counter

    source
    fn SdkMeter::f64_up_down_counter(self : SdkMeter, name : StringView) -> DoubleUpDownCounterBuilder

    Starts building a floating-point up-down counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#updowncounter-creation

    SdkMeter::gauge

    source
    fn SdkMeter::gauge(self : SdkMeter, name : StringView) -> GaugeBuilder

    Starts building a gauge instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#gauge-creation

    SdkMeter::histogram

    source
    fn SdkMeter::histogram(self : SdkMeter, name : StringView) -> HistogramBuilder

    Starts building a histogram instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#histogram-creation

    SdkMeter::observable_counter

    source
    fn SdkMeter::observable_counter(self : SdkMeter, name : StringView) -> ObservableCounterBuilder

    Starts building an observable counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-counter-creation

    SdkMeter::observable_gauge

    source
    fn SdkMeter::observable_gauge(self : SdkMeter, name : StringView) -> ObservableGaugeBuilder

    Starts building an observable gauge instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-gauge-creation

    SdkMeter::observable_up_down_counter

    source
    fn SdkMeter::observable_up_down_counter(self : SdkMeter, name : StringView) -> ObservableUpDownCounterBuilder

    Starts building an observable up-down counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-updowncounter-creation

    SdkMeter::u64_counter

    source
    fn SdkMeter::u64_counter(self : SdkMeter, name : StringView) -> UInt64CounterBuilder

    Starts building an unsigned counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#counter-creation

    SdkMeter::u64_gauge

    source
    fn SdkMeter::u64_gauge(self : SdkMeter, name : StringView) -> UInt64GaugeBuilder

    Starts building an unsigned gauge instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#gauge-creation

    SdkMeter::u64_histogram

    source
    fn SdkMeter::u64_histogram(self : SdkMeter, name : StringView) -> UInt64HistogramBuilder

    Starts building an unsigned histogram instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#histogram-creation

    SdkMeter::u64_observable_counter

    source
    fn SdkMeter::u64_observable_counter(self : SdkMeter, name : StringView) -> ObservableUInt64CounterBuilder

    Starts building an unsigned observable counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-counter-creation

    SdkMeter::u64_observable_gauge

    source
    fn SdkMeter::u64_observable_gauge(self : SdkMeter, name : StringView) -> ObservableUInt64GaugeBuilder

    Starts building an unsigned observable gauge instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#asynchronous-gauge-creation

    SdkMeter::up_down_counter

    source
    fn SdkMeter::up_down_counter(self : SdkMeter, name : StringView) -> UpDownCounterBuilder

    Starts building an up-down counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#updowncounter-creation

    SdkMeterProvider

    source
    pub struct SdkMeterProvider {
      state : 
    Ref    [MeterProviderState]
    }

    Owns resource metadata, registered instruments, exporters, and readers.

    Applications create one provider, configure readers/exporters/views, and shut it down during application teardown. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#meterprovider

    SdkMeterProvider::builder

    source

    Starts building a meter provider with the default resource.

    Add readers, exporters, or views before build(). A provider without readers/exporters still aggregates local measurements but exports nothing. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#meterprovider

    SdkMeterProvider::collect

    source

    Collects a fresh snapshot from every registered synchronous instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#meterprovider

    SdkMeterProvider::force_flush

    source

    Collects and exports a fresh metric snapshot through every exporter. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#forceflush

    SdkMeterProvider::into_meter_provider

    source

    Erases this SDK provider into the public metrics API provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#meterprovider

    SdkMeterProvider::manual_reader

    source
    fn SdkMeterProvider::manual_reader(self : SdkMeterProvider) -> ManualReader

    Creates a pull-based reader over this provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    SdkMeterProvider::meter

    source
    fn SdkMeterProvider::meter(self : SdkMeterProvider, name : StringView, version? : String?, schema_url? : String?, attributes? : ArrayView[
    KeyValue    ]) -> SdkMeter

    Creates a meter scoped to the supplied instrumentation library metadata.

    The instrumentation scope is attached to metric data produced by instruments created from the meter. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#meter

    SdkMeterProvider::resource

    source

    Returns the provider resource. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#meterprovider

    SdkMeterProvider::shutdown

    source

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#shutdown

    SdkMeterProvider::shutdown_with_timeout

    source
    async fn SdkMeterProvider::shutdown_with_timeout(self : SdkMeterProvider, timeout_millis : Int) -> Result[Unit, 
    OTelSdkError    ]

    Flushes exporters, then shuts them down and marks the provider unusable. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#shutdown

    SdkMeterProvider::spawn_periodic_readers

    source
    fn SdkMeterProvider::spawn_periodic_readers(self : SdkMeterProvider, group : 
    TaskGroup    [Unit], allow_failure? : Bool) -> Unit

    Spawns all configured periodic readers into the provided task group. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    SdkMeterProviderBuilder

    source
    pub struct SdkMeterProviderBuilder {
      resource : 
    Resource
      exporters : Array[MetricExporter]
      manual_readers : Array[ManualReader]
      periodic_readers : Array[PeriodicMetricReader]
      views : Array[(Instrument) -> Stream?]
    }

    Builder for SdkMeterProvider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#meterprovider

    SdkMeterProviderBuilder::build

    source

    Builds the meter provider and wires up periodic readers. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#meterprovider

    SdkMeterProviderBuilder::with_exporter

    source

    Registers an exporter used during force_flush() and shutdown().

    For periodic background export, use with_periodic_exporter() or register a PeriodicMetricReader. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricexporter

    SdkMeterProviderBuilder::with_periodic_exporter

    source
    fn SdkMeterProviderBuilder::with_periodic_exporter(self : SdkMeterProviderBuilder, exporter : MetricExporter, interval_millis? : Int) -> SdkMeterProviderBuilder

    Registers an exporter and a periodic reader for background exports.

    A negative interval uses the SDK default. Zero is normalized to one millisecond. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricexporter

    SdkMeterProviderBuilder::with_periodic_reader

    source

    Registers a periodic reader with the provider.

    The reader's background loop starts only after spawn_periodic_readers() or the facade/global equivalent is called. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    SdkMeterProviderBuilder::with_reader

    source

    Registers a manual reader with the provider.

    Manual readers are useful for tests and pull-style integrations. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    SdkMeterProviderBuilder::with_resource

    source

    Replaces the provider resource. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#meterprovider

    SdkMeterProviderBuilder::with_view

    source

    Adds a view that can rename or reshape future metric streams.

    Views apply when instruments are registered. Use them to select aggregation, filter attributes, rename streams, or set cardinality limits. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#view

    Stream

    source
    pub struct Stream {
      name : String?
      description : String?
      unit : String?
      aggregation : StreamAggregation?
      allowed_attribute_keys : Array[String]?
      cardinality_limit : Int?
    } derive(Eq, ToJson, 
    Debug    )

    Stream configuration returned by a view. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#view

    Stream::builder

    source
    fn Stream::builder() -> StreamBuilder

    Creates an empty stream builder. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#stream-configuration

    StreamAggregation

    source
    pub(all) enum StreamAggregation {
      Default
      Drop
      Sum
      LastValue
      Histogram
    } derive(Eq, ToJson, 
    Debug    )

    Aggregation selection used by metric views.

    Views can keep the default, drop a stream, or force a supported aggregation. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#aggregation

    StreamBuilder

    source
    pub struct StreamBuilder {
      name : String?
      description : String?
      unit : String?
      aggregation : StreamAggregation?
      allowed_attribute_keys : Array[String]?
      cardinality_limit : Int?
    }

    Builder for stream transformations. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#view

    StreamBuilder::build

    source
    fn StreamBuilder::build(self : StreamBuilder) -> Stream

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#stream-configuration

    StreamBuilder::with_aggregation

    source
    fn StreamBuilder::with_aggregation(self : StreamBuilder, aggregation : StreamAggregation) -> StreamBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#stream-configuration

    StreamBuilder::with_allowed_attribute_keys

    source
    fn StreamBuilder::with_allowed_attribute_keys(self : StreamBuilder, keys : ArrayView[StringView]) -> StreamBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#stream-configuration

    StreamBuilder::with_cardinality_limit

    source
    fn StreamBuilder::with_cardinality_limit(self : StreamBuilder, limit : Int) -> StreamBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#stream-configuration

    StreamBuilder::with_description

    source
    fn StreamBuilder::with_description(self : StreamBuilder, description : StringView) -> StreamBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#stream-configuration

    StreamBuilder::with_name

    source
    fn StreamBuilder::with_name(self : StreamBuilder, name : StringView) -> StreamBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#stream-configuration

    StreamBuilder::with_unit

    source
    fn StreamBuilder::with_unit(self : StreamBuilder, unit : StringView) -> StreamBuilder

    Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#stream-configuration

    SyncInstrumentState

    source
    type SyncInstrumentState

    Temporality

    source
    pub(all) enum Temporality {
      Cumulative
      Delta
      LowMemory
    } derive(Compare, Eq, Hash, ToJson, 
    Debug    )

    Defines the time window used when readers report aggregated measurements. Spec: https://opentelemetry.io/docs/specs/otel/metrics/sdk/#metricreader

    UInt64Counter

    source
    pub struct UInt64Counter {
      state : 
    Ref    [SyncInstrumentState]
    }

    Unsigned counter instrument handle. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#counter

    UInt64Counter::add

    source

    Adds a delta to the unsigned counter for one attribute set. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    UInt64CounterBuilder

    source
    pub struct UInt64CounterBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
    }

    Builder for an unsigned monotonic counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    UInt64CounterBuilder::build

    source

    Builds the unsigned counter instrument and registers it with the provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    UInt64CounterBuilder::with_description

    source
    fn UInt64CounterBuilder::with_description(self : UInt64CounterBuilder, description : StringView) -> UInt64CounterBuilder

    Sets the instrument description. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    UInt64CounterBuilder::with_unit

    source
    fn UInt64CounterBuilder::with_unit(self : UInt64CounterBuilder, unit : StringView) -> UInt64CounterBuilder

    Sets the instrument unit. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    UInt64Gauge

    source
    pub struct UInt64Gauge {
      state : 
    Ref    [SyncInstrumentState]
    }

    Unsigned gauge instrument handle. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#gauge

    UInt64Gauge::record

    source

    Records the latest unsigned gauge value for an attribute set. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    UInt64GaugeBuilder

    source
    pub struct UInt64GaugeBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
    }

    Builder for an unsigned gauge instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    UInt64GaugeBuilder::build

    source

    Builds the unsigned gauge instrument and registers it with the provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    UInt64GaugeBuilder::with_description

    source
    fn UInt64GaugeBuilder::with_description(self : UInt64GaugeBuilder, description : StringView) -> UInt64GaugeBuilder

    Sets the instrument description. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    UInt64GaugeBuilder::with_unit

    source
    fn UInt64GaugeBuilder::with_unit(self : UInt64GaugeBuilder, unit : StringView) -> UInt64GaugeBuilder

    Sets the instrument unit. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    UInt64Histogram

    source
    pub struct UInt64Histogram {
      state : 
    Ref    [SyncInstrumentState]
    }

    Unsigned histogram instrument handle. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#histogram

    UInt64Histogram::record

    source

    Records one unsigned histogram sample for an attribute set. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    UInt64HistogramBuilder

    source
    pub struct UInt64HistogramBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
    }

    Builder for an unsigned histogram instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    UInt64HistogramBuilder::build

    source

    Builds the unsigned histogram instrument and registers it with the provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    UInt64HistogramBuilder::with_description

    source
    fn UInt64HistogramBuilder::with_description(self : UInt64HistogramBuilder, description : StringView) -> UInt64HistogramBuilder

    Sets the instrument description. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    UInt64HistogramBuilder::with_unit

    source
    fn UInt64HistogramBuilder::with_unit(self : UInt64HistogramBuilder, unit : StringView) -> UInt64HistogramBuilder

    Sets the instrument unit. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

    UpDownCounter

    source
    pub struct UpDownCounter {
      state : 
    Ref    [SyncInstrumentState]
    }

    Up-down counter instrument handle. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#updowncounter

    UpDownCounter::add

    source

    Adds a delta to the up-down counter for one attribute set. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#measurement

    UpDownCounterBuilder

    source
    pub struct UpDownCounterBuilder {
      meter : SdkMeter
      name : String
      description : String?
      unit : String?
    }

    Builder for a signed counter instrument. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    UpDownCounterBuilder::build

    source

    Builds the up-down counter instrument and registers it with the provider. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument

    UpDownCounterBuilder::with_description

    source
    fn UpDownCounterBuilder::with_description(self : UpDownCounterBuilder, description : StringView) -> UpDownCounterBuilder

    Sets the instrument description. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-description

    UpDownCounterBuilder::with_unit

    source
    fn UpDownCounterBuilder::with_unit(self : UpDownCounterBuilder, unit : StringView) -> UpDownCounterBuilder

    Sets the instrument unit. Spec: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-unit

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