我尝试使用缓存设置node-http-proxy模块 node-http-proxy module。我设法配置node-http-proxy以完成我在代理调用方面需要做的事情,但我想找到一种方法来缓存其中一些调用。
我当前的代码如下(省略了一些配置引导):
var http = require('http');
var https = require('https');
var httpProxy = require('http-proxy');
var proxy = httpProxy.createProxyServer({});
var fs = require('fs');
var handler = function(req, res) {
proxy.web(req, res, {target: 'http://localhost:9000'});
};
var server = http.createServer(handler).listen(config.children.http.port, function() {
console.log('Listening on port %d', server.address().port);
});
var secure = https.createServer(config.children.https.options, handler).listen(config.children.https.port, function() {
console.log('Listening on port %d', secure.address().port);
});
在处理程序函数中,我希望能够以某种方式捕获代理正在读取的内容" target"并在将它输出到res之前将其流式传输到fs.createWriteStream(' / somepath')。然后我会修改我的函数来做一些事情:
var handler = function(req, res) {
var path = '/somepath';
fs.exists(path, function(exists) {
if(exists) {
console.log('is file');
fs.createReadStream(path).pipe(res);
} else {
console.log('proxying');
// Here I need to find a way to write into path
proxy.web(req, res, {target: 'http://localhost:9000'});
}
});
};
有谁知道怎么做?
答案 0 :(得分:5)
问题的答案最终非常简单:
var handler = function(req, res, next) {
var path = '/tmp/file';
fs.exists(path, function(exists) {
if(exists) {
fs.createReadStream(path).pipe(res);
} else {
proxy.on('proxyRes', function(proxyRes, req, res) {
proxyRes.pipe(fs.createWriteStream(path));
});
proxy.web(req, res, {target: 'http://localhost:9000'});
}
});
};