/// <reference types="node" />
import { IModuleHook, IModuleOptions, Module } from "../../../container";
import { ErrorChain } from "../../error";
/** Process runtime information interface. */
export interface IProcessInformation {
    name: string;
    title: string;
    version: string;
    environment: string;
    arch: string;
    platform: NodeJS.Platform;
    nodeVersion: string;
    pid: number;
    type: string;
    release: string;
    endianness: "BE" | "LE";
    hostname: string;
}
/** Process status interface. */
export interface IProcessStatus {
    uptime: number;
    cpuUsage: NodeJS.CpuUsage;
    memoryUsage: NodeJS.MemoryUsage;
}
/** Process error codes. */
export declare enum EProcessError {
    Signal = "ProcessError.Signal"
}
/** Process error class. */
export declare class ProcessError extends ErrorChain {
    constructor(code: EProcessError, cause?: Error, context?: object);
}
/** Process environment variable names. */
export declare enum EProcessEnv {
    Name = "PROCESS_NAME",
    Version = "PROCESS_VERSION",
    NodeEnv = "NODE_ENV"
}
/** Process log names. */
export declare enum EProcessLog {
    Information = "Process.Information",
    Signal = "Process.Signal"
}
/** Process metric names. */
export declare enum EProcessMetric {
    UserCpuUsage = "Process.UserCpuUsage",
    SystemCpuUsage = "Process.SystemCpuUsage",
    RssMemoryUsage = "Process.RssMemoryUsage",
    HeapTotalMemoryUsage = "Process.HeapTotalMemoryUsage",
    HeapUsedMemoryUsage = "Process.HeapUsedMemoryUsage"
}
/** Node.js process interface. */
export declare class Process extends Module {
    /** Default module name. */
    static readonly moduleName: string;
    /** Get Node.js process title. */
    static get title(): string;
    /** Set Node.js process title. */
    static setTitle(name?: string): string;
    get envTitle(): string;
    readonly envVersion: string;
    readonly envNodeEnv: string;
    /** Override in subclass to change metric interval. */
    get metricInterval(): number;
    /** Get Node.js process information. */
    get information(): IProcessInformation;
    /** Get Node.js process status. */
    get status(): IProcessStatus;
    constructor(options: IModuleOptions);
    /** Try to read process information asset file, handle process events. */
    moduleUp(...args: IModuleHook[]): Promise<void>;
    /** Kill this process with "SIGINT" signal. */
    kill(): void;
    /** Container down when process termination signal received. */
    protected processOnSignal(signal: string): Promise<void>;
    protected processMetrics(status: IProcessStatus): void;
}