79 lines
3.4 KiB
JavaScript
79 lines
3.4 KiB
JavaScript
var config = require('../config');
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var cloudReady;
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// The SDK timeout option does not protect us when its Promise/callback never
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// settles. Bound initialization and every request outside the native SDK too.
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function bounded(operation, milliseconds, message, code) {
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return new Promise(function (resolve, reject) {
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var settled = false;
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var timer = setTimeout(function () {
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var error = new Error(message); error.code = code;
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finish(reject, error);
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}, milliseconds);
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function finish(callback, value) {
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if (settled) return;
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settled = true; clearTimeout(timer); callback(value);
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}
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Promise.resolve().then(operation).then(function (value) { finish(resolve, value); },
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function (error) { finish(reject, error); });
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});
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}
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function unwrap(result) {
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if (typeof result === 'string') result = JSON.parse(result);
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if (result && typeof result.success === 'boolean') {
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if (!result.success) throw new Error(result.errorMessage || '服务暂不可用');
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return typeof result.data === 'string' ? JSON.parse(result.data) : result.data;
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}
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return result;
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}
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function initCloud() {
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if (!cloudReady) {
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var initializing = bounded(function () {
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var sdk = require('@tbmp/mp-cloud-sdk'), cloud = sdk.default || sdk;
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return Promise.resolve(cloud.init({ env: config.cloudEnv })).then(function (ok) {
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if (!ok) throw new Error('淘宝云服务初始化失败');
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return cloud;
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});
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}, 15000, '淘宝云服务连接超时，请稍后重试', 'CLOUD_INIT_TIMEOUT').catch(function (err) {
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if (cloudReady === initializing) cloudReady = null;
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throw err;
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});
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cloudReady = initializing;
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}
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return cloudReady;
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}
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function request(path, body, token) {
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var headers = { 'Content-Type': 'application/json;charset=UTF-8' };
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if (token) headers.Authorization = 'Bearer ' + token;
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if (config.transport === 'direct') {
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if (!/^http:\/\/(localhost|127\.0\.0\.1)(:\d+)?$/.test(config.baseUrl)) return Promise.reject(new Error('直连接口仅用于本机联调'));
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return bounded(function () {
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return new Promise(function (resolve, reject) {
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my.request({ url: config.baseUrl + config.basePath + path, method: 'POST', headers: headers, data: JSON.stringify(body),
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dataType: 'json', timeout: 10000,
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success: function (res) {
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try {
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if ((res.status || res.statusCode) !== 200) throw new Error('服务暂不可用');
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resolve(unwrap(res.data));
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} catch (e) { reject(e); }
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}, fail: function () { reject(new Error('网络异常，请稍后重试')); } });
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});
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}, 12000, '网络请求超时，请稍后重试', 'REQUEST_TIMEOUT');
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}
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var cloudType = config.cloudType || 'empty';
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if (cloudType === 'empty' && (!config.cloudAppId || !/^https:\/\//.test(config.baseUrl))) {
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return Promise.reject(new Error('请先配置淘宝云应用和 HTTPS 服务地址'));
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}
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return initCloud().then(function (cloud) {
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var exts = { timeout: 10000 };
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if (config.cloudAppId) exts.cloudAppId = config.cloudAppId;
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if (cloudType === 'empty') exts.domain = config.baseUrl;
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return bounded(function () {
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return cloud.application.httpRequest({ path: config.basePath + path, method: 'POST', headers: headers,
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params: {}, body: body, exts: exts });
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}, 12000, '网络请求超时，请稍后重试', 'REQUEST_TIMEOUT');
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}).then(unwrap);
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}
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module.exports = { request: request, unwrap: unwrap };
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