import { type TelemetryClient } from '@aztec/telemetry-client';
export type HACleanupType = 'stuck' | 'old' | 'outdated_rollup';
/**
 * Metrics for HA signer tracking signing operations, lock acquisition, and cleanup.
 */
export declare class HASignerMetrics {
    private nodeId;
    private signingDuration;
    private signingSuccessCount;
    private dutyAlreadySignedCount;
    private slashingProtectionCount;
    private signingErrorCount;
    private lockAcquiredCount;
    private cleanupStuckDutiesCount;
    private cleanupOldDutiesCount;
    private cleanupOutdatedRollupDutiesCount;
    constructor(client: TelemetryClient, nodeId: string, name?: string);
    /**
     * Record a successful signing operation.
     * @param dutyType - The type of duty signed
     * @param durationMs - Duration from start of signWithProtection to completion
     */
    recordSigningSuccess(dutyType: string, durationMs: number): void;
    /**
     * Record a DutyAlreadySignedError (expected in HA; another node signed first).
     * @param dutyType - The type of duty
     */
    recordDutyAlreadySigned(dutyType: string): void;
    /**
     * Record a SlashingProtectionError (attempted to sign different data for same duty).
     * @param dutyType - The type of duty
     */
    recordSlashingProtection(dutyType: string): void;
    /**
     * Record a signing function failure (lock will be deleted for retry).
     * @param dutyType - The type of duty
     */
    recordSigningError(dutyType: string): void;
    /**
     * Record lock acquisition.
     * @param acquired - Whether a new lock was acquired (true) or existing record found (false)
     */
    recordLockAcquire(acquired: boolean): void;
    /**
     * Record cleanup metrics.
     * @param type - Type of cleanup
     * @param count - Number of duties cleaned up
     */
    recordCleanup(type: HACleanupType, count: number): void;
}
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