import * as otel from '@opentelemetry/api';
import type { Resource } from '@opentelemetry/resources';
import type { SpanExporter, SpanProcessor } from '@opentelemetry/sdk-trace-base';
import type * as nexus from 'nexus-rpc';
import type { Context as ActivityContext } from '@temporalio/activity';
import type { Next, ActivityInboundCallsInterceptor, ActivityOutboundCallsInterceptor, NexusInboundCallsInterceptor, NexusOutboundCallsInterceptor, NexusStartOperationInput, NexusStartOperationOutput, NexusCancelOperationInput, InjectedSink, GetLogAttributesInput, GetMetricTagsInput, ActivityExecuteInput } from '@temporalio/worker';
import { type OpenTelemetryWorkflowExporter } from '../workflow/definitions';
export interface InterceptorOptions {
    readonly tracer?: otel.Tracer;
}
/**
 * Intercepts calls to start an Activity.
 *
 * Wraps the operation in an opentelemetry Span and links it to a parent Span context if one is
 * provided in the Activity input headers.
 */
export declare class OpenTelemetryActivityInboundInterceptor implements ActivityInboundCallsInterceptor {
    protected readonly ctx: ActivityContext;
    protected readonly tracer: otel.Tracer;
    constructor(ctx: ActivityContext, options?: InterceptorOptions);
    execute(input: ActivityExecuteInput, next: Next<ActivityInboundCallsInterceptor, 'execute'>): Promise<unknown>;
}
/**
 * Intercepts calls to emit logs and metrics from an Activity.
 *
 * Attach OpenTelemetry context tracing attributes to emitted log messages and metrics, if appropriate.
 */
export declare class OpenTelemetryActivityOutboundInterceptor implements ActivityOutboundCallsInterceptor {
    protected readonly ctx: ActivityContext;
    constructor(ctx: ActivityContext);
    getLogAttributes(input: GetLogAttributesInput, next: Next<ActivityOutboundCallsInterceptor, 'getLogAttributes'>): Record<string, unknown>;
    getMetricTags(input: GetMetricTagsInput, next: Next<ActivityOutboundCallsInterceptor, 'getMetricTags'>): GetMetricTagsInput;
}
/**
 * Intercepts inbound Nexus Operation calls on the worker.
 *
 * Wraps `startOperation` and `cancelOperation` in opentelemetry Spans, linking to a parent Span context
 * if one is provided in the Nexus request headers.
 */
export declare class OpenTelemetryNexusInboundInterceptor implements NexusInboundCallsInterceptor {
    protected readonly ctx: nexus.OperationContext;
    protected readonly tracer: otel.Tracer;
    constructor(ctx: nexus.OperationContext, options?: InterceptorOptions);
    startOperation(input: NexusStartOperationInput, next: Next<NexusInboundCallsInterceptor, 'startOperation'>): Promise<NexusStartOperationOutput>;
    cancelOperation(input: NexusCancelOperationInput, next: Next<NexusInboundCallsInterceptor, 'cancelOperation'>): Promise<void>;
}
/**
 * Intercepts outbound calls from a Nexus Operation handler.
 *
 * Attaches OpenTelemetry context tracing attributes to emitted log messages and metrics.
 */
export declare class OpenTelemetryNexusOutboundInterceptor implements NexusOutboundCallsInterceptor {
    protected readonly ctx: nexus.OperationContext;
    constructor(ctx: nexus.OperationContext);
    getLogAttributes(input: GetLogAttributesInput, next: Next<NexusOutboundCallsInterceptor, 'getLogAttributes'>): Record<string, unknown>;
    getMetricTags(input: GetMetricTagsInput, next: Next<NexusOutboundCallsInterceptor, 'getMetricTags'>): GetMetricTagsInput;
}
/**
 * Takes an opentelemetry SpanExporter and turns it into an injected Workflow span exporter sink
 *
 * @deprecated Do not directly pass a `SpanExporter`. Pass a `SpanProcessor` instead to ensure proper handling of async attributes.
 */
export declare function makeWorkflowExporter(spanExporter: SpanExporter, resource: Resource): InjectedSink<OpenTelemetryWorkflowExporter>;
/**
 * Takes an opentelemetry SpanProcessor and turns it into an injected Workflow span exporter sink.
 *
 * For backward compatibility, passing a `SpanExporter` directly is still supported.
 */
export declare function makeWorkflowExporter(spanProcessor: SpanProcessor, resource: Resource): InjectedSink<OpenTelemetryWorkflowExporter>;