import type { FabricEvent } from './types.js';
import type { SubmissionTelemetrySink } from './submission-telemetry.js';
export declare const FABRIC_OPERATIONAL_METRICS: {
    readonly requestLatencyMs: "fabric_harness_request_latency_ms";
    readonly submissionDurationMs: "fabric_harness_submission_duration_ms";
    readonly queueAgeMs: "fabric_harness_queue_age_ms";
    readonly errorsTotal: "fabric_harness_errors_total";
    readonly approvalWaitMs: "fabric_harness_approval_wait_ms";
    readonly recoveryDurationMs: "fabric_harness_recovery_duration_ms";
    readonly costUsdTotal: "fabric_harness_cost_usd_total";
};
export interface OperationalMetricsSnapshot {
    generatedAt: string;
    histograms: Record<string, {
        count: number;
        sum: number;
        max: number;
        p50: number;
        p95: number;
        p99: number;
    }>;
    counters: Record<string, number>;
}
export interface OperationalSloTargets {
    requestLatencyP95Ms?: number;
    queueAgeP95Ms?: number;
    errorRateMax?: number;
    approvalWaitP95Ms?: number;
    recoveryP95Ms?: number;
    costUsdMax?: number;
}
export interface OperationalSloEvaluation {
    ok: boolean;
    checks: Array<{
        metric: string;
        actual: number;
        target: number;
        ok: boolean;
    }>;
}
export interface OperationalMetricsCollector {
    readonly submissionSink: SubmissionTelemetrySink;
    recordEvent(event: FabricEvent): void;
    recordRequest(durationMs: number, outcome?: 'ok' | 'error'): void;
    recordRecovery(durationMs: number, recovered: boolean): void;
    snapshot(): OperationalMetricsSnapshot;
    openMetrics(): string;
    reset(): void;
}
/** Low-cardinality operational metrics collector suitable for OTel/Prometheus bridging. */
export declare function createOperationalMetricsCollector(): OperationalMetricsCollector;
export declare function evaluateOperationalSlos(snapshot: OperationalMetricsSnapshot, targets: OperationalSloTargets): OperationalSloEvaluation;
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