99 lines
4.3 KiB
Plaintext
99 lines
4.3 KiB
Plaintext
"use strict";
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var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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var desc = Object.getOwnPropertyDescriptor(m, k);
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if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
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desc = { enumerable: true, get: function() { return m[k]; } };
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}
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Object.defineProperty(o, k2, desc);
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}) : (function(o, m, k, k2) {
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if (k2 === undefined) k2 = k;
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o[k2] = m[k];
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}));
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var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
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Object.defineProperty(o, "default", { enumerable: true, value: v });
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}) : function(o, v) {
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o["default"] = v;
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});
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var __importStar = (this && this.__importStar) || (function () {
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var ownKeys = function(o) {
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ownKeys = Object.getOwnPropertyNames || function (o) {
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var ar = [];
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for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
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return ar;
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};
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return ownKeys(o);
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};
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return function (mod) {
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if (mod && mod.__esModule) return mod;
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var result = {};
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if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
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__setModuleDefault(result, mod);
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return result;
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};
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})();
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.RestartProcess = void 0;
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const Rx = __importStar(require("rxjs"));
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const operators_1 = require("rxjs/operators");
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const defaults = __importStar(require("../defaults"));
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/**
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* Restarts commands that fail up to a defined number of times.
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*/
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class RestartProcess {
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logger;
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scheduler;
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delay;
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tries;
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constructor({ delay, tries, logger, scheduler, }) {
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this.logger = logger;
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this.delay = delay ?? 0;
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this.tries = tries != null ? +tries : defaults.restartTries;
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this.tries = this.tries < 0 ? Infinity : this.tries;
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this.scheduler = scheduler;
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}
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handle(commands) {
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if (this.tries === 0) {
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return { commands };
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}
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const delayOperator = (0, operators_1.delayWhen)((_, index) => {
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const { delay } = this;
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const value = delay === 'exponential' ? Math.pow(2, index) * 1000 : delay;
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return Rx.timer(value, this.scheduler);
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});
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commands
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.map((command) => command.close.pipe((0, operators_1.take)(this.tries), (0, operators_1.takeWhile)(({ exitCode }) => exitCode !== 0)))
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.forEach((failure, index) => Rx.merge(
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// Delay the emission (so that the restarts happen on time),
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// explicitly telling the subscriber that a restart is needed
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failure.pipe(delayOperator, (0, operators_1.map)(() => true)),
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// Skip the first N emissions (as these would be duplicates of the above),
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// meaning it will be empty because of success, or failed all N times,
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// and no more restarts should be attempted.
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failure.pipe((0, operators_1.skip)(this.tries), (0, operators_1.map)(() => false), (0, operators_1.defaultIfEmpty)(false))).subscribe((restart) => {
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const command = commands[index];
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if (restart) {
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this.logger.logCommandEvent(`${command.command} restarted`, command);
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command.start();
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}
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}));
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return {
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commands: commands.map((command) => {
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const closeStream = command.close.pipe((0, operators_1.filter)(({ exitCode }, emission) => {
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// We let all success codes pass, and failures only after restarting won't happen again
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return exitCode === 0 || emission >= this.tries;
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}));
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// Return a proxy so that mutations happen on the original Command object.
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// If either `Object.assign()` or `Object.create()` were used, it'd be hard to
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// reflect the mutations on Command objects referenced by previous flow controllers.
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return new Proxy(command, {
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get(target, prop) {
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return prop === 'close' ? closeStream : target[prop];
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},
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});
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}),
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};
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}
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}
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exports.RestartProcess = RestartProcess;
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