380 lines
14 KiB
JavaScript
380 lines
14 KiB
JavaScript
"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.FileHelper = void 0;
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const TOML = __importStar(require("@iarna/toml"));
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const fast_xml_parser_1 = require("fast-xml-parser");
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const INI = __importStar(require("ini"));
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const fs = __importStar(require("node:fs/promises"));
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const YAML = __importStar(require("yaml"));
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const zod_1 = require("zod");
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const util_1 = require("../../../base/lib/util");
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const Watchable_1 = require("../../../base/lib/util/Watchable");
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const previousPath = /(.+?)\/([^/]*)$/;
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const exists = (path) => fs.access(path).then(() => true, () => false);
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async function onCreated(path) {
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if (path === '/')
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return;
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if (!path.startsWith('/'))
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path = `${process.cwd()}/${path}`;
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if (await exists(path)) {
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return;
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}
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const split = path.split('/');
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const filename = split.pop();
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const parent = split.join('/');
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await onCreated(parent);
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const ctrl = new AbortController();
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const watch = fs.watch(parent, { persistent: false, signal: ctrl.signal });
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if (await exists(path)) {
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ctrl.abort();
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return;
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}
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if (await fs.access(path).then(() => true, () => false)) {
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ctrl.abort();
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return;
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}
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for await (let event of watch) {
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if (event.filename === filename) {
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ctrl.abort('finished');
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return;
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}
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}
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}
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function fileMerge(...args) {
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let res = args.shift();
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for (const arg of args) {
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if (res === arg)
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continue;
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else if (res &&
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arg &&
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typeof res === 'object' &&
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typeof arg === 'object' &&
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!Array.isArray(res) &&
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!Array.isArray(arg)) {
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for (const key of Object.keys(arg)) {
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res[key] = fileMerge(res[key], arg[key]);
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}
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}
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else
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res = arg;
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}
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return res;
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}
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function filterUndefined(a) {
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if (a && typeof a === 'object') {
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if (Array.isArray(a)) {
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return a.map(filterUndefined);
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}
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return Object.entries(a).reduce((acc, [k, v]) => {
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if (v !== undefined) {
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acc[k] = filterUndefined(v);
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}
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return acc;
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}, {});
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}
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return a;
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}
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function toPath(path) {
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if (typeof path === 'string') {
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return path;
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}
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return path.base.subpath(path.subpath);
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}
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/**
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* @description Use this class to read/write an underlying configuration file belonging to the upstream service.
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*
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* These type definitions should reflect the underlying file as closely as possible. For example, if the service does not require a particular value, it should be marked as optional(), even if your package requires it.
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*
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* It is recommended to use onMismatch() whenever possible. This provides an escape hatch in case the user edits the file manually and accidentally sets a value to an unsupported type.
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*
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* Officially supported file types are json, yaml, and toml. Other files types can use "raw"
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*
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* Choose between officially supported file formats (), or a custom format (raw).
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*
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* @example
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* Below are a few examples
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*
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* ```
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* import { matches, FileHelper } from '@start9labs/start-sdk'
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* const { arrayOf, boolean, literal, literals, object, natural, string } = matches
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*
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* export const jsonFile = FileHelper.json('./inputSpec.json', object({
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* passwords: arrayOf(string).onMismatch([])
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* type: literals('private', 'public').optional().onMismatch(undefined)
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* }))
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*
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* export const tomlFile = FileHelper.toml('./inputSpec.toml', object({
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* url: literal('https://start9.com').onMismatch('https://start9.com')
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* public: boolean.onMismatch(true)
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* }))
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*
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* export const yamlFile = FileHelper.yaml('./inputSpec.yml', object({
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* name: string.optional().onMismatch(undefined)
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* age: natural.optional().onMismatch(undefined)
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* }))
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*
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* export const bitcoinConfFile = FileHelper.raw(
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* './service.conf',
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* (obj: CustomType) => customConvertObjToFormattedString(obj),
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* (str) => customParseStringToTypedObj(str),
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* )
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* ```
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*/
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class FileHelper {
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constructor(path, writeData, readData, validate) {
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this.path = path;
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this.writeData = writeData;
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this.readData = readData;
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this.validate = validate;
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this.consts = [];
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}
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async writeFileRaw(data) {
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const parent = previousPath.exec(this.path);
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if (parent) {
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await fs.mkdir(parent[1], { recursive: true });
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}
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await fs.writeFile(this.path, data);
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return null;
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}
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/**
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* Accepts structured data and overwrites the existing file on disk.
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*/
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async writeFile(data) {
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return await this.writeFileRaw(this.writeData(data));
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}
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async readFileRaw() {
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if (!(await exists(this.path))) {
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return null;
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}
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return await fs.readFile(this.path).then((data) => data.toString('utf-8'));
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}
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async readFile() {
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const raw = await this.readFileRaw();
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if (raw === null) {
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return raw;
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}
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return this.readData(raw);
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}
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/**
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* Reads the file from disk and converts it to structured data.
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*/
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async readOnce(map) {
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const data = await this.readFile();
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if (!data)
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return null;
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return map(this.validate(data));
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}
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createFileWatchable(effects, map, eq) {
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const doRead = async () => {
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const data = await this.readFile();
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if (!data)
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return null;
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return this.validate(data);
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};
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const filePath = this.path;
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const fileHelper = this;
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const wrappedMap = (raw) => {
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if (raw === null)
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return null;
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return map(raw);
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};
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return new (class extends Watchable_1.Watchable {
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constructor() {
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super(...arguments);
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this.label = 'FileHelper';
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}
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async fetch() {
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return doRead();
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}
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async *produce(abort) {
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while (this.effects.isInContext && !abort.aborted) {
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if (await exists(filePath)) {
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const ctrl = new AbortController();
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abort.addEventListener('abort', () => ctrl.abort());
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const watch = fs.watch(filePath, {
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persistent: false,
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signal: ctrl.signal,
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});
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yield await doRead();
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await Promise.resolve()
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.then(async () => {
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for await (const _ of watch) {
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ctrl.abort();
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return null;
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}
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})
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.catch((e) => console.error((0, util_1.asError)(e)));
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}
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else {
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yield null;
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await onCreated(filePath).catch((e) => console.error((0, util_1.asError)(e)));
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}
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}
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}
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onConstRegistered(value) {
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if (!this.effects.constRetry)
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return;
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const record = [
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this.effects.constRetry,
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value,
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wrappedMap,
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eq,
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];
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fileHelper.consts.push(record);
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return () => {
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fileHelper.consts = fileHelper.consts.filter((r) => r !== record);
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};
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}
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})(effects, { map: wrappedMap, eq });
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}
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read(map, eq) {
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map = map ?? ((a) => a);
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eq = eq ?? util_1.deepEqual;
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return {
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once: () => this.readOnce(map),
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const: (effects) => this.createFileWatchable(effects, map, eq).const(),
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watch: (effects, abort) => this.createFileWatchable(effects, map, eq).watch(abort),
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onChange: (effects, callback) => this.createFileWatchable(effects, map, eq).onChange(callback),
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waitFor: (effects, pred) => this.createFileWatchable(effects, map, eq).waitFor(pred),
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};
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}
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/**
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* Accepts full structured data and overwrites the existing file on disk if it exists.
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*/
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async write(effects, data, options = {}) {
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const newData = this.validate(data);
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await this.writeFile(newData);
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if (!options.allowWriteAfterConst && effects.constRetry) {
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const records = this.consts.filter(([c]) => c === effects.constRetry);
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for (const record of records) {
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const [_, prev, map, eq] = record;
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if (!eq(prev, map(newData))) {
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throw new Error(`Canceled: write after const: ${this.path}`);
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}
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}
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}
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return null;
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}
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/**
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* Accepts partial structured data and performs a merge with the existing file on disk.
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*/
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async merge(effects, data, options = {}) {
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const fileDataRaw = await this.readFileRaw();
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let fileData = fileDataRaw === null ? null : this.readData(fileDataRaw);
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try {
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fileData = this.validate(fileData);
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}
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catch (_) { }
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const mergeData = this.validate(fileMerge({}, fileData, data));
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const toWrite = this.writeData(mergeData);
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if (toWrite !== fileDataRaw) {
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await this.writeFile(mergeData);
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if (!options.allowWriteAfterConst && effects.constRetry) {
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const records = this.consts.filter(([c]) => c === effects.constRetry);
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for (const record of records) {
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const [_, prev, map, eq] = record;
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if (!eq(prev, map(mergeData))) {
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throw new Error(`Canceled: write after const: ${this.path}`);
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}
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}
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}
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}
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return null;
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}
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/**
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* We wanted to be able to have a fileHelper, and just modify the path later in time.
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* Like one behavior of another dependency or something similar.
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*/
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withPath(path) {
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return new FileHelper(toPath(path), this.writeData, this.readData, this.validate);
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}
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/**
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* Create a File Helper for an arbitrary file type.
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*
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* Provide custom functions for translating data to/from the file format.
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*/
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static raw(path, toFile, fromFile, validate) {
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return new FileHelper(toPath(path), toFile, fromFile, validate);
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}
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static rawTransformed(path, toFile, fromFile, validate, transformers) {
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return FileHelper.raw(path, (inData) => {
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if (transformers) {
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return toFile(transformers.onWrite(inData));
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}
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return toFile(inData);
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}, (fileData) => {
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if (transformers) {
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return transformers.onRead(fromFile(fileData));
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}
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return fromFile(fileData);
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}, validate);
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}
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static string(path, shape, transformers) {
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return FileHelper.rawTransformed(path, (inData) => inData, (inString) => inString, (data) => (shape || zod_1.z.string()).parse(data), transformers);
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}
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static json(path, shape, transformers) {
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return FileHelper.rawTransformed(path, (inData) => JSON.stringify(inData, null, 2), (inString) => JSON.parse(inString), (data) => shape.parse(data), transformers);
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}
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static yaml(path, shape, transformers) {
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return FileHelper.rawTransformed(path, (inData) => YAML.stringify(inData, null, 2), (inString) => YAML.parse(inString), (data) => shape.parse(data), transformers);
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}
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static toml(path, shape, transformers) {
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return FileHelper.rawTransformed(path, (inData) => TOML.stringify(inData), (inString) => TOML.parse(inString), (data) => shape.parse(data), transformers);
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}
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static ini(path, shape, options, transformers) {
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return FileHelper.rawTransformed(path, (inData) => INI.stringify(filterUndefined(inData), options), (inString) => INI.parse(inString, options), (data) => shape.parse(data), transformers);
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}
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static env(path, shape, transformers) {
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return FileHelper.rawTransformed(path, (inData) => Object.entries(inData)
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.map(([k, v]) => `${k}=${v}`)
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.join('\n'), (inString) => Object.fromEntries(inString
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.split('\n')
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.map((line) => line.trim())
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.filter((line) => !line.startsWith('#') && line.includes('='))
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.map((line) => {
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const pos = line.indexOf('=');
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return [line.slice(0, pos), line.slice(pos + 1)];
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})), (data) => shape.parse(data), transformers);
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}
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static xml(path, shape, options, transformers) {
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const parser = new fast_xml_parser_1.XMLParser(options?.parser);
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const builder = new fast_xml_parser_1.XMLBuilder(options?.builder);
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return FileHelper.rawTransformed(path, (inData) => builder.build(inData), (inString) => parser.parse(inString), (data) => shape.parse(data), transformers);
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}
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}
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exports.FileHelper = FileHelper;
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exports.default = FileHelper;
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//# sourceMappingURL=fileHelper.js.map
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