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66 lines
1.4 KiB
66 lines
1.4 KiB
package weed_server
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import (
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/util"
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"io"
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"math/rand"
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"net/http"
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)
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var (
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client *http.Client
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)
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func init() {
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client = &http.Client{Transport: &http.Transport{
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MaxIdleConnsPerHost: 1024,
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}}
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}
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func (fs *FilerServer) proxyToVolumeServer(w http.ResponseWriter, r *http.Request, fileId string) {
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urlStrings, err := fs.filer.MasterClient.GetLookupFileIdFunction()(fileId)
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if err != nil {
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glog.Errorf("locate %s: %v", fileId, err)
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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if len(urlStrings) == 0 {
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w.WriteHeader(http.StatusNotFound)
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return
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}
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proxyReq, err := http.NewRequest(r.Method, urlStrings[rand.Intn(len(urlStrings))], r.Body)
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if err != nil {
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glog.Errorf("NewRequest %s: %v", urlStrings[0], err)
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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proxyReq.Header.Set("Host", r.Host)
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proxyReq.Header.Set("X-Forwarded-For", r.RemoteAddr)
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for header, values := range r.Header {
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for _, value := range values {
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proxyReq.Header.Add(header, value)
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}
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}
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proxyResponse, postErr := client.Do(proxyReq)
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if postErr != nil {
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glog.Errorf("post to filer: %v", postErr)
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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defer util.CloseResponse(proxyResponse)
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for k, v := range proxyResponse.Header {
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w.Header()[k] = v
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}
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w.WriteHeader(proxyResponse.StatusCode)
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io.Copy(w, proxyResponse.Body)
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}
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