'use strict';
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const Agent = require('agentkeepalive');
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const HttpsAgent = require('agentkeepalive').HttpsAgent;
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const urllib = require('urllib');
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const ms = require('humanize-ms');
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class HttpClient extends urllib.HttpClient2 {
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constructor(app) {
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normalizeConfig(app);
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const config = app.config.httpclient;
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super({
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app,
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defaultArgs: config.request,
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agent: new Agent(config.httpAgent),
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httpsAgent: new HttpsAgent(config.httpsAgent),
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});
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this.app = app;
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}
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request(url, args, callback) {
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if (typeof args === 'function') {
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callback = args;
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args = null;
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}
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args = args || {};
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if (args.ctx && args.ctx.tracer) {
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args.tracer = args.ctx.tracer;
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} else {
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args.tracer = args.tracer || this.app.tracer;
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}
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// the callback style
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if (callback) {
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this.app.deprecate('[httpclient] We now support async for this function, so callback isn\'t recommended.');
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super.request(url, args)
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.then(result => process.nextTick(() => callback(null, result.data, result.res)))
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.catch(err => process.nextTick(() => callback(err)));
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return;
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}
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// the Promise style
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return super.request(url, args);
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}
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curl(url, args, callback) {
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return this.request(url, args, callback);
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}
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requestThunk(url, args) {
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this.app.deprecate('[httpclient] Please use `request()` instead of `requestThunk()`');
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return callback => {
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this.request(url, args, (err, data, res) => {
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if (err) {
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return callback(err);
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}
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callback(null, {
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data,
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status: res.status,
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headers: res.headers,
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res,
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});
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});
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};
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}
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}
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function normalizeConfig(app) {
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const config = app.config.httpclient;
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// compatibility
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if (typeof config.keepAlive === 'boolean') {
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config.httpAgent.keepAlive = config.keepAlive;
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config.httpsAgent.keepAlive = config.keepAlive;
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}
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if (config.timeout) {
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config.timeout = ms(config.timeout);
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config.httpAgent.timeout = config.timeout;
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config.httpsAgent.timeout = config.timeout;
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}
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// compatibility httpclient.freeSocketKeepAliveTimeout => httpclient.freeSocketTimeout
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if (config.freeSocketKeepAliveTimeout && !config.freeSocketTimeout) {
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config.freeSocketTimeout = config.freeSocketKeepAliveTimeout;
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delete config.freeSocketKeepAliveTimeout;
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}
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if (config.freeSocketTimeout) {
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config.freeSocketTimeout = ms(config.freeSocketTimeout);
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config.httpAgent.freeSocketTimeout = config.freeSocketTimeout;
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config.httpsAgent.freeSocketTimeout = config.freeSocketTimeout;
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} else {
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// compatibility agent.freeSocketKeepAliveTimeout
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if (config.httpAgent.freeSocketKeepAliveTimeout && !config.httpAgent.freeSocketTimeout) {
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config.httpAgent.freeSocketTimeout = config.httpAgent.freeSocketKeepAliveTimeout;
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delete config.httpAgent.freeSocketKeepAliveTimeout;
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}
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if (config.httpsAgent.freeSocketKeepAliveTimeout && !config.httpsAgent.freeSocketTimeout) {
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config.httpsAgent.freeSocketTimeout = config.httpsAgent.freeSocketKeepAliveTimeout;
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delete config.httpsAgent.freeSocketKeepAliveTimeout;
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}
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}
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if (typeof config.maxSockets === 'number') {
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config.httpAgent.maxSockets = config.maxSockets;
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config.httpsAgent.maxSockets = config.maxSockets;
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}
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if (typeof config.maxFreeSockets === 'number') {
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config.httpAgent.maxFreeSockets = config.maxFreeSockets;
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config.httpsAgent.maxFreeSockets = config.maxFreeSockets;
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}
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if (config.httpAgent.timeout < 30000) {
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app.coreLogger.warn('[egg:httpclient] config.httpclient.httpAgent.timeout(%s) can\'t below 30000, auto reset to 30000',
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config.httpAgent.timeout);
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config.httpAgent.timeout = 30000;
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}
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if (config.httpsAgent.timeout < 30000) {
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app.coreLogger.warn('[egg:httpclient] config.httpclient.httpsAgent.timeout(%s) can\'t below 30000, auto reset to 30000',
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config.httpsAgent.timeout);
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config.httpsAgent.timeout = 30000;
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}
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if (typeof config.request.timeout === 'string') {
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config.request.timeout = ms(config.request.timeout);
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}
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}
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module.exports = HttpClient;
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