70 lines
1.8 KiB
JavaScript
70 lines
1.8 KiB
JavaScript
'use strict';
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let express = require('express');
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let app = express();
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let mcache = require('memory-cache');
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const request = require('superagent');
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let cors = require('cors')
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app.use(cors())
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let cache = (duration) => {
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return (req, res, next) => {
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let key = '__express__' + req.originalUrl || req.url
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let cachedBody = mcache.get(key)
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if (cachedBody) {
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res.send(JSON.parse(cachedBody))
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} else {
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res.sendResponse = res.send
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res.send = (body) => {
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mcache.put(key, body, duration * 1000);
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res.sendResponse(body)
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};
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next();
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}
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}
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};
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app.get('/get',cache(20), cors(), (req, res) => {
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setTimeout(() => {
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const url = (req.query)?req.query.url:null;
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if (!url){
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res.status(404).send(getResponse(404,"Not Found " +url)) //not found
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}else{
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request.get(url, function (err, response) {
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// res.header("Access-Control-Allow-Origin", "http://localhost:3000");
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res.header("Access-Control-Allow-Headers", "Origin, Content-Type, Content-Length");
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res.header("Access-Control-Allow-Methods", "GET, OPTIONS");
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res.header("Access-Control-Allow-Methods", "GET, OPTIONS");
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res.header("Content-Type","application/json");
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if (!response && err){
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res.status(500).send(getResponse(500,"An error occured for " +url))
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return;
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}
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res.status(response.status).send(response.body);
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})
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}
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})
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});
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app.use((req, res) => {
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res.status(404).send(getResponse(404,"Not Found " +url)); //not found
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});
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app.listen((process.env.PORT)?process.env.PORT:3000, function () {
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console.log(`Example app listening on port ${process.env.PORT}!`)
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});
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function getResponse(code, message){
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var response ={};
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response["code"]=code;
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response["message"]=message;
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return response;
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}
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