mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
240 lines
6.8 KiB
Go
240 lines
6.8 KiB
Go
package weed_server
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import (
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"encoding/json"
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"errors"
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"io/ioutil"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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"time"
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"github.com/chrislusf/seaweedfs/weed/filer2"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/operation"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/util"
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"os"
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)
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var (
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OS_UID = uint32(os.Getuid())
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OS_GID = uint32(os.Getgid())
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)
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type FilerPostResult struct {
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Name string `json:"name,omitempty"`
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Size uint32 `json:"size,omitempty"`
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Error string `json:"error,omitempty"`
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Fid string `json:"fid,omitempty"`
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Url string `json:"url,omitempty"`
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}
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func (fs *FilerServer) queryFileInfoByPath(w http.ResponseWriter, r *http.Request, path string) (fileId, urlLocation string, err error) {
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var entry *filer2.Entry
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entry, err = fs.filer.FindEntry(filer2.FullPath(path))
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if err == filer2.ErrNotFound {
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return "", "", nil
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}
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if err != nil {
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glog.V(0).Infoln("failing to find path in filer store", path, err.Error())
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writeJsonError(w, r, http.StatusInternalServerError, err)
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return
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}
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if len(entry.Chunks) == 0 {
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glog.V(1).Infof("empty entry: %s", path)
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w.WriteHeader(http.StatusNoContent)
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} else {
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fileId = entry.Chunks[0].FileId
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urlLocation, err = operation.LookupFileId(fs.filer.GetMaster(), fileId)
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if err != nil {
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glog.V(1).Infof("operation LookupFileId %s failed, err is %s", fileId, err.Error())
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w.WriteHeader(http.StatusNotFound)
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}
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}
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return
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}
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func (fs *FilerServer) assignNewFileInfo(w http.ResponseWriter, r *http.Request, replication, collection string, dataCenter string) (fileId, urlLocation string, err error) {
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ar := &operation.VolumeAssignRequest{
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Count: 1,
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Replication: replication,
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Collection: collection,
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Ttl: r.URL.Query().Get("ttl"),
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DataCenter: dataCenter,
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}
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var altRequest *operation.VolumeAssignRequest
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if dataCenter != "" {
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altRequest = &operation.VolumeAssignRequest{
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Count: 1,
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Replication: replication,
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Collection: collection,
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Ttl: r.URL.Query().Get("ttl"),
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DataCenter: "",
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}
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}
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assignResult, ae := operation.Assign(fs.filer.GetMaster(), ar, altRequest)
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if ae != nil {
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glog.Errorf("failing to assign a file id: %v", ae)
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writeJsonError(w, r, http.StatusInternalServerError, ae)
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err = ae
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return
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}
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fileId = assignResult.Fid
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urlLocation = "http://" + assignResult.Url + "/" + assignResult.Fid
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return
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}
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func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) {
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query := r.URL.Query()
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replication := query.Get("replication")
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if replication == "" {
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replication = fs.option.DefaultReplication
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}
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collection := query.Get("collection")
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if collection == "" {
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collection = fs.option.Collection
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}
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dataCenter := query.Get("dataCenter")
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if dataCenter == "" {
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dataCenter = fs.option.DataCenter
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}
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if autoChunked := fs.autoChunk(w, r, replication, collection, dataCenter); autoChunked {
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return
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}
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fileId, urlLocation, err := fs.queryFileInfoByPath(w, r, r.URL.Path)
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if err == nil && fileId == "" {
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fileId, urlLocation, err = fs.assignNewFileInfo(w, r, replication, collection, dataCenter)
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}
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if err != nil || fileId == "" || urlLocation == "" {
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return
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}
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glog.V(0).Infof("request header %+v, urlLocation: %v", r.Header, urlLocation)
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u, _ := url.Parse(urlLocation)
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// This allows a client to generate a chunk manifest and submit it to the filer -- it is a little off
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// because they need to provide FIDs instead of file paths...
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cm, _ := strconv.ParseBool(query.Get("cm"))
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if cm {
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q := u.Query()
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q.Set("cm", "true")
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u.RawQuery = q.Encode()
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}
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glog.V(4).Infoln("post to", u)
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// send request to volume server
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request := &http.Request{
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Method: r.Method,
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URL: u,
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Proto: r.Proto,
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ProtoMajor: r.ProtoMajor,
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ProtoMinor: r.ProtoMinor,
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Header: r.Header,
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Body: r.Body,
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Host: r.Host,
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ContentLength: r.ContentLength,
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}
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resp, do_err := util.Do(request)
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if do_err != nil {
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glog.Errorf("failing to connect to volume server %s: %v, %+v", r.RequestURI, do_err, r.Method)
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writeJsonError(w, r, http.StatusInternalServerError, do_err)
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return
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}
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defer resp.Body.Close()
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resp_body, ra_err := ioutil.ReadAll(resp.Body)
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if ra_err != nil {
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glog.V(0).Infoln("failing to upload to volume server", r.RequestURI, ra_err.Error())
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writeJsonError(w, r, http.StatusInternalServerError, ra_err)
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return
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}
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glog.V(4).Infoln("post result", string(resp_body))
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var ret operation.UploadResult
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unmarshal_err := json.Unmarshal(resp_body, &ret)
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if unmarshal_err != nil {
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glog.V(0).Infoln("failing to read upload resonse", r.RequestURI, string(resp_body))
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writeJsonError(w, r, http.StatusInternalServerError, unmarshal_err)
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return
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}
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if ret.Error != "" {
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glog.V(0).Infoln("failing to post to volume server", r.RequestURI, ret.Error)
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writeJsonError(w, r, http.StatusInternalServerError, errors.New(ret.Error))
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return
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}
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// find correct final path
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path := r.URL.Path
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if strings.HasSuffix(path, "/") {
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if ret.Name != "" {
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path += ret.Name
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} else {
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operation.DeleteFile(fs.filer.GetMaster(), fileId, fs.jwt(fileId)) //clean up
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glog.V(0).Infoln("Can not to write to folder", path, "without a file name!")
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writeJsonError(w, r, http.StatusInternalServerError,
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errors.New("Can not to write to folder "+path+" without a file name"))
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return
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}
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}
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// update metadata in filer store
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glog.V(4).Infoln("saving", path, "=>", fileId)
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entry := &filer2.Entry{
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FullPath: filer2.FullPath(path),
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Attr: filer2.Attr{
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Mtime: time.Now(),
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Crtime: time.Now(),
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Mode: 0660,
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Uid: OS_UID,
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Gid: OS_GID,
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Replication: replication,
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Collection: collection,
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TtlSec: int32(util.ParseInt(r.URL.Query().Get("ttl"), 0)),
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},
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Chunks: []*filer_pb.FileChunk{{
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FileId: fileId,
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Size: uint64(ret.Size),
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Mtime: time.Now().UnixNano(),
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}},
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}
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if db_err := fs.filer.CreateEntry(entry); db_err != nil {
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operation.DeleteFile(fs.filer.GetMaster(), fileId, fs.jwt(fileId)) //clean up
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glog.V(0).Infof("failing to write %s to filer server : %v", path, db_err)
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writeJsonError(w, r, http.StatusInternalServerError, db_err)
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return
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}
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// send back post result
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reply := FilerPostResult{
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Name: ret.Name,
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Size: ret.Size,
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Error: ret.Error,
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Fid: fileId,
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Url: urlLocation,
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}
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writeJsonQuiet(w, r, http.StatusCreated, reply)
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}
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// curl -X DELETE http://localhost:8888/path/to
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// curl -X DELETE http://localhost:8888/path/to?recursive=true
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func (fs *FilerServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
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isRecursive := r.FormValue("recursive") == "true"
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err := fs.filer.DeleteEntryMetaAndData(filer2.FullPath(r.URL.Path), isRecursive, true)
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if err != nil {
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glog.V(1).Infoln("deleting", r.URL.Path, ":", err.Error())
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writeJsonError(w, r, http.StatusInternalServerError, err)
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return
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}
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w.WriteHeader(http.StatusNoContent)
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}
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