import { sessionHostMetrics } from './schema/sessions.js';
import type { StoredSessionHostMetrics } from '@opensip-cli/contracts';
import type { DrizzleDataStore, DrizzleHandle } from '@opensip-cli/datastore/internal';
/** Package-private validated metrics projection shared by both write paths. */
export interface PreparedHostMetricsWrite {
    readonly row: typeof sessionHostMetrics.$inferInsert;
    readonly patch: Partial<typeof sessionHostMetrics.$inferInsert>;
}
export declare function prepareHostMetricsWrite(sessionId: string, metrics: StoredSessionHostMetrics): PreparedHostMetricsWrite;
/** Project a raw host-metrics row, dropping null columns (only captured metrics). */
export declare function projectHostMetrics(row: typeof sessionHostMetrics.$inferSelect): StoredSessionHostMetrics | undefined;
/** Read host-metrics for one session, or `undefined` when no row exists. */
export declare function readHostMetrics(datastore: DrizzleDataStore, sessionId: string): StoredSessionHostMetrics | undefined;
/** Batch-load host-metrics for a page of session ids (avoids list()'s N+1). */
export declare function hostMetricsBySessionId(datastore: DrizzleDataStore, ids: readonly string[]): Map<string, StoredSessionHostMetrics>;
/** Package-private strict metrics upsert used inside an owning transaction. */
export declare function writeHostMetricsRowOrThrow(tx: DrizzleHandle, sessionId: string, metrics: StoredSessionHostMetrics): void;
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