data class OtlpMetric(val name: String, val description: String? = null, val unit: String? = null, val gauge: OtlpGauge? = null, val sum: OtlpSum? = null)

OTLP metric definition containing one data type (gauge or sum).

@Serializable

Root OTLP metrics payload following the OpenTelemetry proto JSON mapping.

@Serializable

data class OtlpNumberDataPoint(val attributes: List<OtlpKeyValue> = emptyList(), val startTimeUnixNano: Long = 0, val timeUnixNano: Long = 0, val asDouble: Double? = null, val asInt: Long? = null)

Numeric data point used by gauge and sum types.

@Serializable

data class OtlpResource(val attributes: List<OtlpKeyValue> = emptyList())

OTLP resource description.

@Serializable

data class OtlpResourceMetrics(val resource: OtlpResource? = null, val scopeMetrics: List<OtlpScopeMetrics>)

Metrics attached to a single resource with their instrumentation scopes.

@Serializable

Metrics produced by a single instrumentation scope.

@Serializable

data class OtlpSum(val dataPoints: List<OtlpNumberDataPoint>, val aggregationTemporality: AggregationTemporality, val isMonotonic: Boolean)

Sum metric payload.

Functions

fun OtlpJsonMetricsSink(delegate: Sink<String>, namespace: String = DEFAULT_NAMESPACE, scopeName: String = DEFAULT_SCOPE, resourceAttributes: Map<String, String> = emptyMap(), resourceAttributesProvider: (Meta) -> Map<String, String> = { resourceAttributes }, temporality: AggregationTemporality = AggregationTemporality.AGGREGATION_TEMPORALITY_CUMULATIVE, fixedTimestamp: Instant? = null, surfaceVersion: MetricsSchemaVersion? = null, json: Json = DefaultJson): MetricsSink

Builds a sink that emits OTLP JSON (metrics) strings.

fun MetricsSnapshot.toOtlpPayload(namespace: String = DEFAULT_NAMESPACE, resourceAttributes: Map<String, String> = emptyMap(), resourceAttributesProvider: (Meta) -> Map<String, String> = { resourceAttributes }, scopeName: String = DEFAULT_SCOPE, temporality: AggregationTemporality = AggregationTemporality.AGGREGATION_TEMPORALITY_CUMULATIVE, fixedTimestamp: Instant? = null, surfaceVersion: MetricsSchemaVersion? = null): OtlpMetricsPayload

Maps a MetricsSnapshot to an OTLP JSON payload ready for serialization.