mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-19 05:27:50 +08:00
415 lines
12 KiB
Go
415 lines
12 KiB
Go
package weed_server
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import (
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"bufio"
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"bytes"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"io/fs"
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"mime/multipart"
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"net/http"
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"net/url"
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"path/filepath"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/seaweedfs/seaweedfs/weed/filer"
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"github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants"
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"google.golang.org/grpc"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/operation"
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"github.com/seaweedfs/seaweedfs/weed/stats"
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"github.com/seaweedfs/seaweedfs/weed/storage/needle"
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"github.com/seaweedfs/seaweedfs/weed/util"
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"github.com/gorilla/mux"
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)
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var serverStats *stats.ServerStats
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var startTime = time.Now()
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var writePool = sync.Pool{New: func() interface{} {
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return bufio.NewWriterSize(nil, 128*1024)
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},
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}
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func init() {
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serverStats = stats.NewServerStats()
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go serverStats.Start()
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}
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// bodyAllowedForStatus is a copy of http.bodyAllowedForStatus non-exported function.
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func bodyAllowedForStatus(status int) bool {
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switch {
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case status >= 100 && status <= 199:
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return false
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case status == http.StatusNoContent:
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return false
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case status == http.StatusNotModified:
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return false
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}
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return true
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}
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func writeJson(w http.ResponseWriter, r *http.Request, httpStatus int, obj interface{}) (err error) {
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if !bodyAllowedForStatus(httpStatus) {
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return
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}
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var bytes []byte
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if obj != nil {
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if r.FormValue("pretty") != "" {
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bytes, err = json.MarshalIndent(obj, "", " ")
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} else {
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bytes, err = json.Marshal(obj)
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}
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}
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if err != nil {
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return
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}
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if httpStatus >= 400 {
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glog.V(0).Infof("response method:%s URL:%s with httpStatus:%d and JSON:%s",
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r.Method, r.URL.String(), httpStatus, string(bytes))
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}
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callback := r.FormValue("callback")
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if callback == "" {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(httpStatus)
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if httpStatus == http.StatusNotModified {
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return
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}
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_, err = w.Write(bytes)
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} else {
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w.Header().Set("Content-Type", "application/javascript")
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w.WriteHeader(httpStatus)
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if httpStatus == http.StatusNotModified {
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return
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}
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if _, err = w.Write([]uint8(callback)); err != nil {
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return
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}
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if _, err = w.Write([]uint8("(")); err != nil {
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return
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}
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fmt.Fprint(w, string(bytes))
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if _, err = w.Write([]uint8(")")); err != nil {
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return
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}
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}
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return
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}
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// wrapper for writeJson - just logs errors
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func writeJsonQuiet(w http.ResponseWriter, r *http.Request, httpStatus int, obj interface{}) {
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if err := writeJson(w, r, httpStatus, obj); err != nil {
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glog.V(0).Infof("error writing JSON status %s %d: %v", r.URL, httpStatus, err)
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glog.V(1).Infof("JSON content: %+v", obj)
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}
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}
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func writeJsonError(w http.ResponseWriter, r *http.Request, httpStatus int, err error) {
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m := make(map[string]interface{})
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m["error"] = err.Error()
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glog.V(1).Infof("error JSON response status %d: %s", httpStatus, m["error"])
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writeJsonQuiet(w, r, httpStatus, m)
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}
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func debug(params ...interface{}) {
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glog.V(4).Infoln(params...)
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}
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func submitForClientHandler(w http.ResponseWriter, r *http.Request, masterFn operation.GetMasterFn, grpcDialOption grpc.DialOption) {
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m := make(map[string]interface{})
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if r.Method != "POST" {
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writeJsonError(w, r, http.StatusMethodNotAllowed, errors.New("Only submit via POST!"))
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return
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}
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debug("parsing upload file...")
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bytesBuffer := bufPool.Get().(*bytes.Buffer)
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defer bufPool.Put(bytesBuffer)
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pu, pe := needle.ParseUpload(r, 256*1024*1024, bytesBuffer)
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if pe != nil {
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writeJsonError(w, r, http.StatusBadRequest, pe)
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return
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}
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debug("assigning file id for", pu.FileName)
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r.ParseForm()
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count := uint64(1)
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if r.FormValue("count") != "" {
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count, pe = strconv.ParseUint(r.FormValue("count"), 10, 32)
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if pe != nil {
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writeJsonError(w, r, http.StatusBadRequest, pe)
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return
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}
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}
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ar := &operation.VolumeAssignRequest{
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Count: count,
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DataCenter: r.FormValue("dataCenter"),
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Rack: r.FormValue("rack"),
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Replication: r.FormValue("replication"),
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Collection: r.FormValue("collection"),
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Ttl: r.FormValue("ttl"),
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DiskType: r.FormValue("disk"),
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}
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assignResult, ae := operation.Assign(masterFn, grpcDialOption, ar)
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if ae != nil {
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writeJsonError(w, r, http.StatusInternalServerError, ae)
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return
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}
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url := "http://" + assignResult.Url + "/" + assignResult.Fid
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if pu.ModifiedTime != 0 {
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url = url + "?ts=" + strconv.FormatUint(pu.ModifiedTime, 10)
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}
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debug("upload file to store", url)
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uploadOption := &operation.UploadOption{
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UploadUrl: url,
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Filename: pu.FileName,
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Cipher: false,
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IsInputCompressed: pu.IsGzipped,
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MimeType: pu.MimeType,
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PairMap: pu.PairMap,
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Jwt: assignResult.Auth,
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}
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uploadResult, err := operation.UploadData(pu.Data, uploadOption)
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if err != nil {
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writeJsonError(w, r, http.StatusInternalServerError, err)
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return
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}
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m["fileName"] = pu.FileName
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m["fid"] = assignResult.Fid
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m["fileUrl"] = assignResult.PublicUrl + "/" + assignResult.Fid
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m["size"] = pu.OriginalDataSize
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m["eTag"] = uploadResult.ETag
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writeJsonQuiet(w, r, http.StatusCreated, m)
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return
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}
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func parseURLPath(path string) (vid, fid, filename, ext string, isVolumeIdOnly bool) {
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switch strings.Count(path, "/") {
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case 3:
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parts := strings.Split(path, "/")
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vid, fid, filename = parts[1], parts[2], parts[3]
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ext = filepath.Ext(filename)
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case 2:
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parts := strings.Split(path, "/")
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vid, fid = parts[1], parts[2]
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dotIndex := strings.LastIndex(fid, ".")
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if dotIndex > 0 {
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ext = fid[dotIndex:]
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fid = fid[0:dotIndex]
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}
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default:
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sepIndex := strings.LastIndex(path, "/")
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commaIndex := strings.LastIndex(path[sepIndex:], ",")
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if commaIndex <= 0 {
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vid, isVolumeIdOnly = path[sepIndex+1:], true
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return
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}
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dotIndex := strings.LastIndex(path[sepIndex:], ".")
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vid = path[sepIndex+1 : commaIndex]
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fid = path[commaIndex+1:]
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ext = ""
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if dotIndex > 0 {
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fid = path[commaIndex+1 : dotIndex]
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ext = path[dotIndex:]
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}
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}
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return
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}
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func statsHealthHandler(w http.ResponseWriter, r *http.Request) {
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m := make(map[string]interface{})
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m["Version"] = util.Version()
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writeJsonQuiet(w, r, http.StatusOK, m)
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}
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func statsCounterHandler(w http.ResponseWriter, r *http.Request) {
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m := make(map[string]interface{})
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m["Version"] = util.Version()
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m["Counters"] = serverStats
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writeJsonQuiet(w, r, http.StatusOK, m)
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}
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func statsMemoryHandler(w http.ResponseWriter, r *http.Request) {
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m := make(map[string]interface{})
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m["Version"] = util.Version()
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m["Memory"] = stats.MemStat()
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writeJsonQuiet(w, r, http.StatusOK, m)
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}
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var StaticFS fs.FS
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func handleStaticResources(defaultMux *http.ServeMux) {
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defaultMux.Handle("/favicon.ico", http.FileServer(http.FS(StaticFS)))
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defaultMux.Handle("/seaweedfsstatic/", http.StripPrefix("/seaweedfsstatic", http.FileServer(http.FS(StaticFS))))
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}
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func handleStaticResources2(r *mux.Router) {
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r.Handle("/favicon.ico", http.FileServer(http.FS(StaticFS)))
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r.PathPrefix("/seaweedfsstatic/").Handler(http.StripPrefix("/seaweedfsstatic", http.FileServer(http.FS(StaticFS))))
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}
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func AdjustPassthroughHeaders(w http.ResponseWriter, r *http.Request, filename string) {
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for header, values := range r.Header {
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if normalizedHeader, ok := s3_constants.PassThroughHeaders[strings.ToLower(header)]; ok {
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w.Header()[normalizedHeader] = values
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}
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}
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adjustHeaderContentDisposition(w, r, filename)
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}
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func adjustHeaderContentDisposition(w http.ResponseWriter, r *http.Request, filename string) {
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if contentDisposition := w.Header().Get("Content-Disposition"); contentDisposition != "" {
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return
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}
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if filename != "" {
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filename = url.QueryEscape(filename)
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contentDisposition := "inline"
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if r.FormValue("dl") != "" {
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if dl, _ := strconv.ParseBool(r.FormValue("dl")); dl {
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contentDisposition = "attachment"
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}
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}
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w.Header().Set("Content-Disposition", contentDisposition+`; filename="`+fileNameEscaper.Replace(filename)+`"`)
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}
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}
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func ProcessRangeRequest(r *http.Request, w http.ResponseWriter, totalSize int64, mimeType string, prepareWriteFn func(offset int64, size int64) (filer.DoStreamContent, error)) error {
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rangeReq := r.Header.Get("Range")
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bufferedWriter := writePool.Get().(*bufio.Writer)
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bufferedWriter.Reset(w)
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defer func() {
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bufferedWriter.Flush()
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writePool.Put(bufferedWriter)
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}()
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if rangeReq == "" {
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w.Header().Set("Content-Length", strconv.FormatInt(totalSize, 10))
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writeFn, err := prepareWriteFn(0, totalSize)
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if err != nil {
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glog.Errorf("ProcessRangeRequest: %v", err)
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return fmt.Errorf("ProcessRangeRequest: %v", err)
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}
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if err = writeFn(bufferedWriter); err != nil {
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glog.Errorf("ProcessRangeRequest: %v", err)
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return fmt.Errorf("ProcessRangeRequest: %v", err)
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}
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return nil
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}
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//the rest is dealing with partial content request
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//mostly copy from src/pkg/net/http/fs.go
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ranges, err := parseRange(rangeReq, totalSize)
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if err != nil {
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glog.Errorf("ProcessRangeRequest headers: %+v err: %v", w.Header(), err)
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http.Error(w, err.Error(), http.StatusRequestedRangeNotSatisfiable)
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return fmt.Errorf("ProcessRangeRequest header: %v", err)
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}
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if sumRangesSize(ranges) > totalSize {
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// The total number of bytes in all the ranges
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// is larger than the size of the file by
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// itself, so this is probably an attack, or a
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// dumb client. Ignore the range request.
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return nil
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}
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if len(ranges) == 0 {
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return nil
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}
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if len(ranges) == 1 {
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// RFC 2616, Section 14.16:
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// "When an HTTP message includes the content of a single
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// range (for example, a response to a request for a
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// single range, or to a request for a set of ranges
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// that overlap without any holes), this content is
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// transmitted with a Content-Range header, and a
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// Content-Length header showing the number of bytes
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// actually transferred.
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// ...
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// A response to a request for a single range MUST NOT
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// be sent using the multipart/byteranges media type."
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ra := ranges[0]
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w.Header().Set("Content-Length", strconv.FormatInt(ra.length, 10))
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w.Header().Set("Content-Range", ra.contentRange(totalSize))
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writeFn, err := prepareWriteFn(ra.start, ra.length)
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if err != nil {
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glog.Errorf("ProcessRangeRequest range[0]: %+v err: %v", w.Header(), err)
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return fmt.Errorf("ProcessRangeRequest: %v", err)
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}
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w.WriteHeader(http.StatusPartialContent)
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err = writeFn(bufferedWriter)
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if err != nil {
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glog.Errorf("ProcessRangeRequest range[0]: %+v err: %v", w.Header(), err)
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return fmt.Errorf("ProcessRangeRequest range[0]: %v", err)
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}
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return nil
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}
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// process multiple ranges
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writeFnByRange := make(map[int](func(writer io.Writer) error))
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for i, ra := range ranges {
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if ra.start > totalSize {
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http.Error(w, "Out of Range", http.StatusRequestedRangeNotSatisfiable)
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return fmt.Errorf("out of range: %v", err)
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}
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writeFn, err := prepareWriteFn(ra.start, ra.length)
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if err != nil {
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glog.Errorf("ProcessRangeRequest range[%d] err: %v", i, err)
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http.Error(w, "Internal Error", http.StatusInternalServerError)
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return fmt.Errorf("ProcessRangeRequest range[%d] err: %v", i, err)
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}
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writeFnByRange[i] = writeFn
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}
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sendSize := rangesMIMESize(ranges, mimeType, totalSize)
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pr, pw := io.Pipe()
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mw := multipart.NewWriter(pw)
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w.Header().Set("Content-Type", "multipart/byteranges; boundary="+mw.Boundary())
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sendContent := pr
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defer pr.Close() // cause writing goroutine to fail and exit if CopyN doesn't finish.
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go func() {
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for i, ra := range ranges {
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part, e := mw.CreatePart(ra.mimeHeader(mimeType, totalSize))
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if e != nil {
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pw.CloseWithError(e)
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return
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}
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writeFn := writeFnByRange[i]
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if writeFn == nil {
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pw.CloseWithError(e)
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return
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}
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if e = writeFn(part); e != nil {
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pw.CloseWithError(e)
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return
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}
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}
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mw.Close()
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pw.Close()
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}()
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if w.Header().Get("Content-Encoding") == "" {
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w.Header().Set("Content-Length", strconv.FormatInt(sendSize, 10))
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}
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w.WriteHeader(http.StatusPartialContent)
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if _, err := io.CopyN(bufferedWriter, sendContent, sendSize); err != nil {
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glog.Errorf("ProcessRangeRequest err: %v", err)
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http.Error(w, "Internal Error", http.StatusInternalServerError)
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return fmt.Errorf("ProcessRangeRequest err: %v", err)
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}
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return nil
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}
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