import * as otel from '@opentelemetry/api';
import * as tracing from '@opentelemetry/sdk-trace-base';
import { InstrumentationLibrary } from '@opentelemetry/core';
import type { Sink, Sinks } from '@temporalio/workflow';
/**
 * Serializable version of SpanContext where traceState is converted to a string.
 */
export type SerializableSpanContext = Omit<otel.SpanContext, 'traceState'> & {
    traceState?: string;
};
/**
 * Serializable version of the opentelemetry Span for cross isolate copying
 */
export interface SerializableSpan {
    readonly name: string;
    readonly kind: otel.SpanKind;
    readonly spanContext: SerializableSpanContext;
    readonly parentSpanId?: string;
    readonly startTime: otel.HrTime;
    readonly endTime: otel.HrTime;
    readonly status: otel.SpanStatus;
    readonly attributes: otel.Attributes;
    readonly links: otel.Link[];
    readonly events: tracing.TimedEvent[];
    readonly duration: otel.HrTime;
    readonly ended: boolean;
    readonly droppedAttributesCount: number;
    readonly droppedLinksCount: number;
    readonly droppedEventsCount: number;
    readonly instrumentationLibrary: InstrumentationLibrary;
}
export interface OpenTelemetryWorkflowExporter extends Sink {
    export(span: SerializableSpan[]): void;
}
/**
 * Required external dependencies for Workflow interceptor to export spans
 */
export interface OpenTelemetrySinks extends Sinks {
    exporter: OpenTelemetryWorkflowExporter;
}
export declare enum SpanName {
    /**
     * Workflow is scheduled by a client
     */
    WORKFLOW_START = "StartWorkflow",
    /**
     * Workflow is signalled
     */
    WORKFLOW_SIGNAL = "SignalWorkflow",
    /**
     * Workflow is client calls signalWithStart
     */
    WORKFLOW_SIGNAL_WITH_START = "SignalWithStartWorkflow",
    /**
     * Workflow is queried
     */
    WORKFLOW_QUERY = "QueryWorkflow",
    /**
     * Workflow update is started by client
     */
    WORKFLOW_START_UPDATE = "StartWorkflowUpdate",
    /**
     * Workflow is started with an update
     */
    WORKFLOW_UPDATE_WITH_START = "UpdateWithStartWorkflow",
    /**
     * Workflow handles an incoming signal
     */
    WORKFLOW_HANDLE_SIGNAL = "HandleSignal",
    /**
     * Workflow handles an incoming query
     */
    WORKFLOW_HANDLE_QUERY = "HandleQuery",
    /**
     * Workflow handles an incoming update
     */
    WORKFLOW_HANDLE_UPDATE = "HandleUpdate",
    /**
     * Workflow validates an incoming update
     */
    WORKFLOW_VALIDATE_UPDATE = "ValidateUpdate",
    /**
     * Workflow is terminated
     */
    WORKFLOW_TERMINATE = "TerminateWorkflow",
    /**
     * Workflow is cancelled
     */
    WORKFLOW_CANCEL = "CancelWorkflow",
    /**
     * Workflow is described
     */
    WORKFLOW_DESCRIBE = "DescribeWorkflow",
    /**
     * Workflow run is executing
     */
    WORKFLOW_EXECUTE = "RunWorkflow",
    /**
     * Child Workflow is started (by parent Workflow)
     */
    CHILD_WORKFLOW_START = "StartChildWorkflow",
    /**
     * Activity is scheduled by a Workflow
     */
    ACTIVITY_START = "StartActivity",
    /**
     * Activity is executing
     */
    ACTIVITY_EXECUTE = "RunActivity",
    /**
     * Workflow is continuing as new
     */
    CONTINUE_AS_NEW = "ContinueAsNew",
    /**
     * Nexus operation is started
     */
    NEXUS_OPERATION_START = "StartNexusOperation"
}
export declare const SPAN_DELIMITER = ":";