195 lines
8.9 KiB
JavaScript
195 lines
8.9 KiB
JavaScript
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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var __generator = (this && this.__generator) || function (thisArg, body) {
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var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
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return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
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function verb(n) { return function (v) { return step([n, v]); }; }
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function step(op) {
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if (f) throw new TypeError("Generator is already executing.");
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while (_) try {
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if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
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if (y = 0, t) op = [op[0] & 2, t.value];
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switch (op[0]) {
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case 0: case 1: t = op; break;
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case 4: _.label++; return { value: op[1], done: false };
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case 5: _.label++; y = op[1]; op = [0]; continue;
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case 7: op = _.ops.pop(); _.trys.pop(); continue;
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default:
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if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
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if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
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if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
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if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
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if (t[2]) _.ops.pop();
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_.trys.pop(); continue;
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}
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op = body.call(thisArg, _);
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} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
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if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
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}
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};
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var __read = (this && this.__read) || function (o, n) {
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var m = typeof Symbol === "function" && o[Symbol.iterator];
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if (!m) return o;
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var i = m.call(o), r, ar = [], e;
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try {
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while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
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}
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catch (error) { e = { error: error }; }
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finally {
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try {
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if (r && !r.done && (m = i["return"])) m.call(i);
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}
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finally { if (e) throw e.error; }
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}
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return ar;
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};
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var __spread = (this && this.__spread) || function () {
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for (var ar = [], i = 0; i < arguments.length; i++) ar = ar.concat(__read(arguments[i]));
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return ar;
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};
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import { getUpHosts } from '../api';
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/**
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* @description 解冻时间，key 是 host，value 为解冻时间
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*/
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var unfreezeTimeMap = new Map();
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var Host = /** @class */ (function () {
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function Host(host, protocol) {
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this.host = host;
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this.protocol = protocol;
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}
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/**
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* @description 当前 host 是否为冻结状态
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*/
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Host.prototype.isFrozen = function () {
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var currentTime = new Date().getTime();
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var unfreezeTime = unfreezeTimeMap.get(this.host);
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return unfreezeTime != null && unfreezeTime >= currentTime;
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};
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/**
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* @param {number} time 单位秒，默认 20s
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* @description 冻结该 host 对象，该 host 将在指定时间内不可用
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*/
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Host.prototype.freeze = function (time) {
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if (time === void 0) { time = 20; }
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var unfreezeTime = new Date().getTime() + (time * 1000);
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unfreezeTimeMap.set(this.host, unfreezeTime);
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};
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/**
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* @description 解冻该 host
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*/
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Host.prototype.unfreeze = function () {
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unfreezeTimeMap["delete"](this.host);
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};
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/**
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* @description 获取当前 host 的完整 url
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*/
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Host.prototype.getUrl = function () {
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return this.protocol + "://" + this.host;
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};
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/**
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* @description 获取解冻时间
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*/
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Host.prototype.getUnfreezeTime = function () {
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return unfreezeTimeMap.get(this.host);
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};
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return Host;
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}());
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export { Host };
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var HostPool = /** @class */ (function () {
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/**
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* @param {string[]} initHosts
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* @description 如果在构造时传入 initHosts，则该 host 池始终使用传入的 initHosts 做为可用的数据
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*/
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function HostPool(initHosts) {
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if (initHosts === void 0) { initHosts = []; }
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this.initHosts = initHosts;
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/**
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* @description 缓存的 host 表，以 bucket 和 accessKey 作为 key
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*/
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this.cachedHostsMap = new Map();
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}
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/**
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* @param {string} accessKey
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* @param {string} bucketName
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* @param {string[]} hosts
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* @param {InternalConfig['upprotocol']} protocol
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* @returns {void}
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* @description 注册可用 host
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*/
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HostPool.prototype.register = function (accessKey, bucketName, hosts, protocol) {
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this.cachedHostsMap.set(accessKey + "@" + bucketName, hosts.map(function (host) { return new Host(host, protocol); }));
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};
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/**
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* @param {string} accessKey
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* @param {string} bucketName
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* @param {InternalConfig['upprotocol']} protocol
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* @returns {Promise<void>}
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* @description 刷新最新的 host 数据，如果用户在构造时该类时传入了 host 或者已经存在缓存则不会发起请求
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*/
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HostPool.prototype.refresh = function (accessKey, bucketName, protocol) {
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var _a, _b, _c, _d;
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return __awaiter(this, void 0, void 0, function () {
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var cachedHostList, response, stashHosts;
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return __generator(this, function (_e) {
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switch (_e.label) {
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case 0:
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cachedHostList = this.cachedHostsMap.get(accessKey + "@" + bucketName) || [];
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if (cachedHostList.length > 0)
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return [2 /*return*/];
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if (this.initHosts.length > 0) {
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this.register(accessKey, bucketName, this.initHosts, protocol);
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return [2 /*return*/];
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}
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return [4 /*yield*/, getUpHosts(accessKey, bucketName, protocol)];
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case 1:
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response = _e.sent();
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if ((response === null || response === void 0 ? void 0 : response.data) != null) {
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stashHosts = __spread((((_b = (_a = response.data.up) === null || _a === void 0 ? void 0 : _a.acc) === null || _b === void 0 ? void 0 : _b.main) || []), (((_d = (_c = response.data.up) === null || _c === void 0 ? void 0 : _c.acc) === null || _d === void 0 ? void 0 : _d.backup) || []));
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this.register(accessKey, bucketName, stashHosts, protocol);
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}
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return [2 /*return*/];
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}
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});
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});
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};
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/**
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* @param {string} accessKey
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* @param {string} bucketName
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* @param {InternalConfig['upprotocol']} protocol
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* @returns {Promise<Host | null>}
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* @description 获取一个可用的上传 Host，排除已冻结的
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*/
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HostPool.prototype.getUp = function (accessKey, bucketName, protocol) {
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return __awaiter(this, void 0, void 0, function () {
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var cachedHostList, availableHostList, priorityQueue;
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return __generator(this, function (_a) {
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switch (_a.label) {
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case 0: return [4 /*yield*/, this.refresh(accessKey, bucketName, protocol)];
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case 1:
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_a.sent();
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cachedHostList = this.cachedHostsMap.get(accessKey + "@" + bucketName) || [];
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if (cachedHostList.length === 0)
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return [2 /*return*/, null];
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availableHostList = cachedHostList.filter(function (host) { return !host.isFrozen(); });
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if (availableHostList.length > 0)
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return [2 /*return*/, availableHostList[0]
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// 无可用的，去取离解冻最近的 host
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];
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priorityQueue = cachedHostList
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.slice().sort(function (hostA, hostB) { return (hostA.getUnfreezeTime() || 0) - (hostB.getUnfreezeTime() || 0); });
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return [2 /*return*/, priorityQueue[0]];
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}
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});
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});
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};
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return HostPool;
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}());
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export { HostPool };
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//# sourceMappingURL=hosts.js.map
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