/**
 * @fileoverview BrightTrustMetrics interface.
 *
 * Metrics exposed by the BrightTrustStateMachine for monitoring at scale.
 *
 * @see Requirements 12.5
 */
/**
 * Metrics for monitoring the BrightTrust system.
 */
export interface BrightTrustMetrics {
    /** Proposal metrics */
    proposals: {
        /** Total proposals created */
        total: number;
        /** Currently pending proposals */
        pending: number;
    };
    /** Vote metrics */
    votes: {
        /** Average time from proposal creation to threshold reached, in milliseconds */
        latency_ms: number;
    };
    /** Share redistribution metrics */
    redistribution: {
        /** Documents processed / total during active redistribution (0-1), or -1 if idle */
        progress: number;
        /** Failed document redistributions */
        failures: number;
    };
    /** Member metrics */
    members: {
        /** Current active member count */
        active: number;
    };
    /** Epoch metrics */
    epoch: {
        /** Current epoch number */
        current: number;
    };
    /** Expiration scheduler metrics */
    expiration: {
        /** Timestamp of last expiration scheduler run, or null if never run */
        last_run: Date | null;
        /** Total identity records expired */
        deleted_total: number;
    };
}
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