/**
*  - OTLP trace types — `@opentelemetry/otlp-transformer`:
*    https://github.com/open-telemetry/opentelemetry-js/blob/main/experimental/packages/otlp-transformer/src/trace/internal-types.ts
*  - OTLP common types (`IKeyValue`/`IAnyValue`) — `@opentelemetry/otlp-transformer`:
*    https://github.com/open-telemetry/opentelemetry-js/blob/main/experimental/packages/otlp-transformer/src/common/internal-types.ts
*  - `SpanContext` — `@opentelemetry/api`:
*    https://github.com/open-telemetry/opentelemetry-js/blob/5954fdeb908ca2123c8dd6e9d51958147b434618/api/src/trace/span_context.ts#L25
*/
export interface IExportTraceServiceRequest {
	resourceSpans?: IResourceSpans[];
}
export interface IResourceSpans {
	resource?: IResource;
	scopeSpans: IScopeSpans[];
	schemaUrl?: string;
}
export interface IResource {
	attributes: IKeyValue[];
	droppedAttributesCount?: number;
}
export interface IScopeSpans {
	scope?: IInstrumentationScope;
	spans?: ISpan[];
	schemaUrl?: string | null;
}
export interface IInstrumentationScope {
	name: string;
	version?: string;
	attributes?: IKeyValue[];
	droppedAttributesCount?: number;
}
export interface ISpan {
	traceId: string;
	spanId: string;
	parentSpanId?: string;
	name: string;
	kind: number;
	startTimeUnixNano: string;
	endTimeUnixNano: string;
	attributes?: IKeyValue[];
	droppedAttributesCount?: number;
	events?: ISpanEvent[];
	droppedEventsCount?: number;
	links?: unknown[];
	droppedLinksCount?: number;
	traceState?: string | null;
	status?: {
		message?: string;
		code: number;
	};
}
/** OTLP span `Event` — e.g. a recorded `exception` (type/message/stacktrace). */
export interface ISpanEvent {
	timeUnixNano: string;
	name: string;
	attributes: IKeyValue[];
	droppedAttributesCount?: number;
}
export interface IKeyValue {
	key: string;
	value: IAnyValue;
}
export interface IAnyValue {
	stringValue?: string | null;
	boolValue?: boolean | null;
	intValue?: number | null;
	doubleValue?: number | null;
}
/**
* Subset of `@opentelemetry/api`'s `SpanContext`
*/
export interface SpanContext {
	traceId: string;
	spanId: string;
	/** Trace flags bitmap; bit 0 is the sampled flag. */
	traceFlags?: number;
}
/** Name, kind and attributes derived from a completed channel operation. */
export interface SpanInfo {
	name: string;
	kind: number;
	attributes: IKeyValue[];
}
/**
* Maps a completed channel operation to a span name, kind and attributes. Each
* describer casts `data` to the payload its producer documents and reads fields
* directly; a malformed payload throws and is caught by `describeSpan`.
*/
export type ChannelDescriber = (channel: string, data: unknown) => SpanInfo;