import type { StepBuffer } from '../runtime/step-buffer.js';
/** The ingress point a trace was opened at. Mirrors `traceFields.entryKind`. */
export type TraceEntryKind = 'http' | 'job' | 'cron' | 'test';
export interface TraceContext {
    /** This trace's id — the `trace.id` of the row opened at the entry. */
    readonly id: string;
    /** The root of the trace tree. Equals `id` for a root trace. */
    readonly rootId: string;
    /** The UTC calendar day the trace opened — the partition its row lives in. */
    readonly openedDay: string;
    /**
     * Resolves once the opening `INSERT` has settled. The closing `UPDATE` waits
     * on this so it can never race ahead of the row it means to close.
     */
    readonly persisted: Promise<void>;
    /** The in-memory `trace_step` buffer flow steps record into — drained at close. */
    readonly buffer: StepBuffer;
}
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