commonMain.aws.smithy.kotlin.runtime.telemetry.metrics.UpDownCounter.kt Maven / Gradle / Ivy

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API for telemetry data

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/*
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */

package aws.smithy.kotlin.runtime.telemetry.metrics

import aws.smithy.kotlin.runtime.collections.Attributes
import aws.smithy.kotlin.runtime.collections.emptyAttributes
import aws.smithy.kotlin.runtime.telemetry.context.Context

public interface UpDownCounter {
    public companion object {
        /**
         * An [UpDownCounter] that does nothing
         */
        public val None: UpDownCounter = object : AbstractUpDownCounter() { }
    }

    /**
     * Records a value
     *
     * @param value the delta amount to record
     * @param attributes attributes to associate with this measurement
     * @param context (Optional) trace context to associate with this measurement
     */
    public fun add(
        value: Long,
        attributes: Attributes = emptyAttributes(),
        context: Context? = null,
    )
}