/**
 * Metrics Types
 * Type definitions for OpenTelemetry metrics system
 */
import type { Counter, Histogram, Meter, ObservableGauge, UpDownCounter } from "../tracing/api-shim.js";
export interface OpenTelemetryAPI {
    metrics: {
        getMeter(name: string | undefined, version?: string): Meter;
    };
}
export interface MetricsInstruments {
    httpRequestCounter: Counter | null;
    httpRequestDuration: Histogram | null;
    httpActiveRequests: UpDownCounter | null;
    cacheGetCounter: Counter | null;
    cacheHitCounter: Counter | null;
    cacheMissCounter: Counter | null;
    cacheSetCounter: Counter | null;
    cacheInvalidateCounter: Counter | null;
    cacheSizeGauge: ObservableGauge | null;
    renderDuration: Histogram | null;
    renderCounter: Counter | null;
    renderErrorCounter: Counter | null;
    rscRenderDuration: Histogram | null;
    rscStreamDuration: Histogram | null;
    rscManifestCounter: Counter | null;
    rscPageCounter: Counter | null;
    rscStreamCounter: Counter | null;
    rscActionCounter: Counter | null;
    rscErrorCounter: Counter | null;
    buildDuration: Histogram | null;
    bundleSizeHistogram: Histogram | null;
    bundleCounter: Counter | null;
    dependencyArtifactBuildCounter: Counter | null;
    dependencyArtifactBuildDuration: Histogram | null;
    dependencyArtifactBuildBytes: Histogram | null;
    dependencyArtifactBuildAssetCount: Histogram | null;
    dependencyArtifactBuildExternalImportCount: Histogram | null;
    dataFetchDuration: Histogram | null;
    dataFetchCounter: Counter | null;
    dataFetchErrorCounter: Counter | null;
    corsRejectionCounter: Counter | null;
    securityHeadersCounter: Counter | null;
    memoryUsageGauge: ObservableGauge | null;
    heapUsageGauge: ObservableGauge | null;
    heapTotalGauge: ObservableGauge | null;
    heapPercentGauge: ObservableGauge | null;
    errorCounter: Counter | null;
    streamLifecycleOutcomeCounter: Counter | null;
    streamLifecycleDeadlineCounter: Counter | null;
    streamLifecycleTelemetryCounter: Counter | null;
    streamLifecycleRepairCounter: Counter | null;
    streamLifecycleShadowDivergenceCounter: Counter | null;
    streamLifecycleAttemptDuration: Histogram | null;
    streamLifecycleFirstProgressDuration: Histogram | null;
    streamLifecycleSemanticIdleDuration: Histogram | null;
    streamLifecycleToolInputDuration: Histogram | null;
    streamLifecycleToolExecutionDuration: Histogram | null;
}
/** Configuration used by metrics. */
export interface MetricsConfig {
    enabled: boolean;
    exporter: "prometheus" | "otlp" | "console";
    endpoint?: string;
    prefix?: string;
    collectInterval?: number;
    debug?: boolean;
}
export interface RuntimeState {
    cacheSize: number;
    activeRequests: number;
}
export interface MemoryUsage {
    rss: number;
    heapUsed: number;
    heapTotal: number;
}
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