OpenTelemetry SDK
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    Interface IMetricReader

    Reads metrics from the SDK. Implementations MUST follow the Metric Reader Specification as well as the requirements listed in this interface. Consider extending MetricReader to get a specification-compliant base implementation of this interface

    interface IMetricReader {
        collect(options?: CommonReaderOptions): Promise<CollectionResult>;
        forceFlush(options?: CommonReaderOptions): Promise<void>;
        selectAggregation(instrumentType: InstrumentType): AggregationOption;
        selectAggregationTemporality(
            instrumentType: InstrumentType,
        ): AggregationTemporality;
        selectCardinalityLimit(instrumentType: InstrumentType): number;
        setMetricProducer(metricProducer: MetricProducer): void;
        shutdown(options?: CommonReaderOptions): Promise<void>;
    }

    Implemented by

    Index
    collect forceFlush selectAggregation selectAggregationTemporality selectCardinalityLimit setMetricProducer shutdown

    • Flushes metrics read by this reader, the promise will reject after the optional timeout or resolve after completion.

      NOTE: this operation MAY continue even after the promise rejects due to a timeout.

      Parameters

      • Optionaloptions: CommonReaderOptions

        options with timeout.

      Returns Promise<void>

    • Shuts down the metric reader, the promise will reject after the optional timeout or resolve after completion.

      NOTE: this operation MAY continue even after the promise rejects due to a timeout.

      Parameters

      • Optionaloptions: CommonReaderOptions

        options with timeout.

      Returns Promise<void>

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