@connectedcars/logutil/build/dist/src/metric.d.ts

Simple log formatting for Node

/// <reference types="node" />
import { EventEmitter } from 'events';
export declare enum MetricType {
    GAUGE = "GAUGE",
    CUMULATIVE = "CUMULATIVE"
}
interface BaseMetric {
    name: string;
    labels?: Record<string, unknown>;
    startTime?: number;
    endTime?: number;
}
type ReducerFn = (arr: number[]) => number;
interface GaugeMetric extends BaseMetric {
    type: MetricType.GAUGE;
    value: number | number[];
    reducerFn?: ReducerFn;
}
interface CumulativeMetric extends BaseMetric {
    type: MetricType.CUMULATIVE;
    value: number;
    startTime: number;
}
type Metric = GaugeMetric | CumulativeMetric;
type FilteredMetric = Omit<Metric, 'value'> & {
    value: number;
    endTime: number;
};
export declare class MetricRegistry extends EventEmitter {
    private metrics;
    logMetrics(): void;
    getMetrics(): FilteredMetric[];
    gauge(name: string, value: number, labels?: Record<string, unknown>, reducerFn?: ReducerFn | null): void;
    cumulative(name: string, value: number, labels?: Record<string, unknown>): void;
    getMetric(name: string): FilteredMetric[];
    clearMetric(name: string): void;
    getMetricNames(): string[];
    private convertTimestampToIsoString;
    private createKey;
    private formatLabels;
}
export declare function getMetricRegistry(delay?: number): MetricRegistry;
export declare function clearMetricRegistry(): void;
export {};