481 lines
12 KiB
TypeScript
481 lines
12 KiB
TypeScript
/**
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* @author Martin Karkowski
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* @email m.karkowski@zema.de
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* @create date 2020-11-11 13:27:58
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* @modify date 2021-10-19 09:15:38
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* @desc [description]
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*
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*/
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import { ArgumentParser } from "argparse";
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import { readFile } from "fs/promises";
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import "reflect-metadata";
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import {
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getLayer,
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layerDefaultParameters,
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validLayerOrMirror,
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validLayers,
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} from "../communication/getLayer.nodejs";
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import { sleep } from "../helpers/async";
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import { generateId } from "../helpers/idMethods";
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import { deepClone } from "../helpers/objectMethods";
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import { getPackageLoader } from "../loader/getPackageLoader.browser";
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import { loadFunctions, loadPackages } from "../loader/loadPackages";
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import { generateLogfilePath, useLogFile } from "../logger/fileLogging";
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import { getNopeLogger } from "../logger/getLogger";
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import { LoggerLevel, LoggerLevels } from "../logger/nopeLogger";
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import { setGlobalLoggerLevel } from "../logger/setGlobalLoggerLevel";
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import { recordCPUProfile } from "../profiling/index.nodejs";
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import {
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INopeINopeConnectivityTimeOptions,
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ValidDefaultSelectors,
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} from "../types/nope";
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import { INopePackageLoader } from "../types/nope/nopePackageLoader.interface";
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import { NOPELOGO } from "./renderNope";
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export interface RunArgs {
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file: string;
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channel: validLayerOrMirror;
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params: string;
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// Flag to prevent loading the configuration
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skipLoadingConfig: boolean;
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// Level of the logger.
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log: LoggerLevel;
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// The Enable Singletons. Defaults to true
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singleton: boolean;
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// The default-selector to select the service providers
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defaultSelector: ValidDefaultSelectors;
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// The default-selector to select the service providers
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dispatcherLogLevel: LoggerLevel;
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// The default-selector to select the service providers
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communicationLogLevel: LoggerLevel;
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// Enable File-logging:
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logToFile: boolean;
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// Delay to wait for system beeing ready.
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delay: number;
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// Flag to force using the selectors. Might have a performance inpact.
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forceUsingSelectors: boolean;
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// Define the Timingsparameter
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timings: Partial<INopeINopeConnectivityTimeOptions>;
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// The Id to use.
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id: string;
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// Flag to enable profiling. Defaults to false.
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profile: boolean;
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// Flag to controll whether base-services should be loaded or not.
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useBaseServices: boolean;
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}
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export const DEFAULT_SETTINGS: RunArgs = {
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file: "./config/settings.json",
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channel: "event",
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skipLoadingConfig: false,
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params: "not-provided",
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log: "debug",
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singleton: true,
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dispatcherLogLevel: "info",
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communicationLogLevel: "info",
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delay: 2,
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timings: {},
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defaultSelector: "first",
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forceUsingSelectors: false,
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logToFile: false,
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id: generateId(),
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profile: false,
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useBaseServices: false,
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};
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/**
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* Helper Function to Read-In the Arguments used by the
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* cli-tool
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*
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* @return {*}
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*/
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export async function readInArgs(
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additionalArguments: {
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help: string;
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type: "string" | "number";
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name: string | string;
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defaultValue?: any;
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}[] = [],
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forcedArgs: Partial<RunArgs> = {}
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): Promise<RunArgs> {
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const parser = new ArgumentParser({
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// version: "1.0.0",
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add_help: true,
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description: "Command Line interface, determines the available Packages.",
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});
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for (const arg of additionalArguments) {
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parser.add_argument(arg.name, {
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help: arg.help,
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default: arg.defaultValue,
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type: arg.type,
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});
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}
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parser.add_argument("-f", "--file", {
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help: "File containing containing the package definitions.",
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default: "./config/settings.json",
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type: "str",
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dest: "file",
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});
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parser.add_argument("-c", "--channel", {
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help:
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"The Communication Channel, which should be used. Possible Values are: " +
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// Display all Options:
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Object.getOwnPropertyNames(validLayers)
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.map((item) => '"' + item + '"')
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.join(", "),
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default: "event",
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type: "str",
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dest: "channel",
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});
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parser.add_argument("-p", "--params", {
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help:
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"Paramas for the Channel, to connect to. The Following Defaults are used: \n" +
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JSON.stringify(layerDefaultParameters, undefined, 4),
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default: "not-provided",
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type: "str",
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dest: "params",
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});
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parser.add_argument("-s", "--skip-loading-config", {
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help: "Flag to prevent loading the elements defined in the settings.json.",
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action: "append",
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nargs: "?",
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dest: "skipLoadingConfig",
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});
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parser.add_argument("--default-selector", {
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help:
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"The default-selector to select the service providers. Possible Values are: " +
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// Display all Options:
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Object.getOwnPropertyNames(ValidDefaultSelectors)
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.map((item) => '"' + item + '"')
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.join(", "),
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default: "first",
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type: "str",
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dest: "defaultSelector",
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});
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parser.add_argument("--log-to-file", {
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help: "Log will be stored in a logfile.",
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action: "append",
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nargs: "?",
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dest: "logToFile",
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});
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parser.add_argument("-l", "--log", {
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help:
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'Specify the Logger Level. Defaults to "info". Valid values are: ' +
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LoggerLevels.join(", "),
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default: "info",
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type: "str",
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dest: "log",
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});
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parser.add_argument("--id", {
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help: "Define a custom id to the Dispatcher: " + LoggerLevels.join(", "),
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default: generateId({
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prestring: "_dispatcher",
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useAsVar: true,
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}),
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type: "str",
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dest: "id",
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});
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parser.add_argument("--dispatcher-log", {
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help:
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'Specify the Logger Level of the Dispatcher. Defaults to "info". Valid values are: ' +
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LoggerLevels.join(", "),
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default: "info",
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type: "str",
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dest: "dispatcherLogLevel",
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});
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parser.add_argument("--force-selector", {
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help: "Forces to use the Selector. Otherwise a smart approach is used, which only enables them if required.",
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action: "append",
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nargs: "?",
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dest: "forceUsingSelectors",
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});
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parser.add_argument("-d", "--delay", {
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help: 'Adds an delay, which will be waited, after the system connected. Parmeter is provided in [s]. Defaults to "2"',
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default: 2,
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type: "float",
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dest: "delay",
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});
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parser.add_argument("--communication-log", {
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help:
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'Specify the Logger Level of the Communication. Defaults to "info". Valid values are: ' +
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LoggerLevels.join(", "),
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default: "info",
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type: "str",
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dest: "communicationLogLevel",
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});
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parser.add_argument("--profile", {
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help: "Flag to enable Profiling",
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action: "append",
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nargs: "?",
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dest: "profile",
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});
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parser.add_argument("--noBaseServices", {
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help: "Flag to enable prevent the base Services to be loaded",
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action: "append",
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nargs: "?",
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dest: "useBaseServices",
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});
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const args: RunArgs = parser.parse_args();
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if (args.params === "not-provided") {
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delete args.params;
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}
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args.skipLoadingConfig = Array.isArray(args.skipLoadingConfig);
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args.profile = Array.isArray(args.profile);
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args.logToFile = Array.isArray(args.logToFile);
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args.forceUsingSelectors = Array.isArray(args.forceUsingSelectors);
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args.useBaseServices = !Array.isArray(args.useBaseServices);
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return Object.assign(args, forcedArgs);
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}
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// Define the Main Function.
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// This function is used as cli tool.
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export async function runNopeBackend(
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_args: Partial<RunArgs> = {}
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): Promise<INopePackageLoader> {
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let opts: {
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params: string | number;
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};
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// Default Settings
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const _defaultSettings: RunArgs = deepClone(DEFAULT_SETTINGS);
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// Use a different ID.
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_defaultSettings.id = generateId();
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const args = Object.assign(_defaultSettings, _args);
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if (args.channel === "io-server") {
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args.skipLoadingConfig = true;
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}
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const closeCallbacks = [];
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try {
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// Try to read in the default config file.
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opts = JSON.parse(
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await readFile("./nopeconfig.json", {
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encoding: "utf-8",
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})
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);
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} catch (error) {
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opts = {} as any;
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}
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if (LoggerLevels.includes(args.log)) {
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setGlobalLoggerLevel(args.log);
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}
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// Define a Logger
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const logger = getNopeLogger("starter");
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if (args.logToFile) {
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const fileName = generateLogfilePath("run");
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logger.warn("Using File Logger. Logging to", fileName);
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closeCallbacks.push(useLogFile(fileName, 200));
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}
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if (args.profile) {
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logger.warn("Enabled Profiling.");
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closeCallbacks.push(recordCPUProfile());
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}
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if (args.channel === "io-server") {
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logger.warn("Running as Server. Wont load any module!");
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args.skipLoadingConfig = true;
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}
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if (!Object.getOwnPropertyNames(validLayers).includes(args.channel)) {
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logger.error(
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"Invalid Channel. Please use the following values. " +
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Object.getOwnPropertyNames(validLayers)
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.map((item) => '"' + item + '"')
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.join(", ")
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);
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const error = Error(
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"Invalid Channel. Please use the following values. " +
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Object.getOwnPropertyNames(validLayers)
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.map((item) => '"' + item + '"')
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.join(", ")
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);
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logger.error(error);
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throw error;
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}
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let _closing = false;
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const _dispose = (reason, p) => {
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if (_closing) {
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return;
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}
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_closing = true;
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if (reason) {
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// If there is a reason
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logger.error("Unhandled Rejection at: Promise", p, "reason:", reason);
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logger.error(reason);
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} else {
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// We should close the Process:
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logger.warn("received 'ctrl+c'. Shutting down the Instances");
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}
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// Exit the Process
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const promises = [];
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for (const callback of closeCallbacks) {
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try {
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promises.push(callback());
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} catch (e) {
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logger.error("During exiting, an error occourd");
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logger.error(e);
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}
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}
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// Wait for all Promises to finish.
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Promise.all(promises).then(() => {
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process.exit();
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});
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};
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// Subscribe to unhandled Reactions.
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process.on("unhandledRejection", (reason, p) => _dispose(reason, p));
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process.on("SIGINT", () => _dispose());
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process.on("SIGTERM", () => _dispose());
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process.on("exit", () => {
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logger.info("Completed. Goodbye");
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});
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// Assign the Default Setting for the Channel.
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opts.params = layerDefaultParameters[args.channel];
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if (args.params != "not-provided") {
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try {
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try {
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// We try to parse the data.
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opts.params = JSON.parse(args.params);
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} catch (e) {
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opts.params = JSON.parse('"' + args.params + '"');
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}
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} catch (e) {
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logger.error(
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"Unable to parse the Parameters for the channel. Please use valid JSON!"
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);
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logger.error(args.params[0]);
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logger.error(e);
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throw e;
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}
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}
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// If required load all Packages.
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if (!args.skipLoadingConfig) {
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// Try to load the Modules.
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try {
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logger.info("loading Functions");
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await loadFunctions(args.file);
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} catch (e) {
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logger.error("Unable to load the Packages defined in " + args.file);
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logger.error("Returning without config. ");
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args.skipLoadingConfig = true;
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}
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}
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let loader: INopePackageLoader;
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try {
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loader = getPackageLoader(
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{
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communicator: getLayer(
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args.channel,
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opts.params,
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args.communicationLogLevel
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),
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logger: getNopeLogger("dispatcher", args.dispatcherLogLevel),
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defaultSelector: args.defaultSelector,
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forceUsingSelectors: args.forceUsingSelectors,
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id: args.id,
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isMaster: args.channel !== "io-server" ? null : false,
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},
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{
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singleton: _args.singleton,
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useBaseServices: _args.useBaseServices,
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}
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);
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// Add the Dispatcher
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closeCallbacks.push(async () => {
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await loader.dispatcher.dispose();
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});
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// If required load all Packages.
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if (!args.skipLoadingConfig) {
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// Try to load the Modules.
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if (args.delay > 0) {
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logger.info(`Waiting ${args.delay} [s] to get all information.`);
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await sleep(args.delay * 1000);
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}
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try {
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logger.info("loading Packages");
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await loadPackages(loader, args.file, args.delay);
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} catch (e) {
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logger.error("Unable to load the Packages defined in " + args.file);
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}
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}
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} catch (e) {
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getNopeLogger("cli", "info").error("failed to load the Packages", e);
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throw e;
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}
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return loader;
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}
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/**
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* Main Function.
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*
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* @export
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*/
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export async function run(
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additionalArguments: {
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help: string;
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type: "string" | "number";
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name: string | string;
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defaultValue?: any;
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}[] = [],
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forcedArgs: Partial<RunArgs> = {},
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quite = false
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) {
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if (!quite) {
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console.log(NOPELOGO);
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console.log("\n\n");
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}
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const args = await readInArgs(additionalArguments, forcedArgs);
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return await runNopeBackend(args);
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}
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export default run;
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// If requested As Main => Perform the Operation.
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if (require.main === module) {
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run();
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}
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