mirror of
https://github.com/seaweedfs/seaweedfs.git
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285 lines
8.0 KiB
Go
285 lines
8.0 KiB
Go
package weed_server
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import (
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"context"
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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/ioutil"
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"mime"
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"net/http"
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"net/url"
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"os"
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filenamePath "path"
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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/security"
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"github.com/chrislusf/seaweedfs/weed/stats"
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"github.com/chrislusf/seaweedfs/weed/util"
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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) assignNewFileInfo(w http.ResponseWriter, r *http.Request, replication, collection string, dataCenter string) (fileId, urlLocation string, auth security.EncodedJwt, err error) {
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stats.FilerRequestCounter.WithLabelValues("assign").Inc()
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start := time.Now()
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defer func() { stats.FilerRequestHistogram.WithLabelValues("assign").Observe(time.Since(start).Seconds()) }()
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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(), fs.grpcDialOption, 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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auth = assignResult.Auth
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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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ctx := context.Background()
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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(ctx, w, r, replication, collection, dataCenter); autoChunked {
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return
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}
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fileId, urlLocation, auth, err := fs.assignNewFileInfo(w, r, replication, collection, dataCenter)
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if err != nil || fileId == "" || urlLocation == "" {
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glog.V(0).Infof("fail to allocate volume for %s, collection:%s, datacenter:%s", r.URL.Path, collection, dataCenter)
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return
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}
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glog.V(4).Infof("write %s to %v", r.URL.Path, 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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ret, err := fs.uploadToVolumeServer(r, u, auth, w, fileId)
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if err != nil {
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return
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}
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if err = fs.updateFilerStore(ctx, r, w, replication, collection, ret, fileId); err != nil {
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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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setEtag(w, ret.ETag)
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writeJsonQuiet(w, r, http.StatusCreated, reply)
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}
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// update metadata in filer store
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func (fs *FilerServer) updateFilerStore(ctx context.Context, r *http.Request, w http.ResponseWriter,
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replication string, collection string, ret operation.UploadResult, fileId string) (err error) {
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stats.FilerRequestCounter.WithLabelValues("postStoreWrite").Inc()
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start := time.Now()
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defer func() {
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stats.FilerRequestHistogram.WithLabelValues("postStoreWrite").Observe(time.Since(start).Seconds())
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}()
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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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}
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}
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existingEntry, err := fs.filer.FindEntry(ctx, filer2.FullPath(path))
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crTime := time.Now()
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if err == nil && existingEntry != nil {
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crTime = existingEntry.Crtime
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}
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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: crTime,
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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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ETag: ret.ETag,
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}},
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}
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if ext := filenamePath.Ext(path); ext != "" {
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entry.Attr.Mime = mime.TypeByExtension(ext)
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}
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// glog.V(4).Infof("saving %s => %+v", path, entry)
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if dbErr := fs.filer.CreateEntry(ctx, entry); dbErr != nil {
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fs.filer.DeleteChunks(entry.FullPath, entry.Chunks)
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glog.V(0).Infof("failing to write %s to filer server : %v", path, dbErr)
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writeJsonError(w, r, http.StatusInternalServerError, dbErr)
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err = dbErr
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return
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}
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return nil
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}
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// send request to volume server
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func (fs *FilerServer) uploadToVolumeServer(r *http.Request, u *url.URL, auth security.EncodedJwt, w http.ResponseWriter, fileId string) (ret operation.UploadResult, err error) {
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stats.FilerRequestCounter.WithLabelValues("postUpload").Inc()
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start := time.Now()
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defer func() { stats.FilerRequestHistogram.WithLabelValues("postUpload").Observe(time.Since(start).Seconds()) }()
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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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if auth != "" {
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request.Header.Set("Authorization", "BEARER "+string(auth))
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}
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resp, doErr := util.Do(request)
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if doErr != nil {
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glog.Errorf("failing to connect to volume server %s: %v, %+v", r.RequestURI, doErr, r.Method)
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writeJsonError(w, r, http.StatusInternalServerError, doErr)
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err = doErr
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return
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}
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defer func() {
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io.Copy(ioutil.Discard, resp.Body)
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resp.Body.Close()
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}()
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etag := resp.Header.Get("ETag")
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respBody, raErr := ioutil.ReadAll(resp.Body)
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if raErr != nil {
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glog.V(0).Infoln("failing to upload to volume server", r.RequestURI, raErr.Error())
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writeJsonError(w, r, http.StatusInternalServerError, raErr)
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err = raErr
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return
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}
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glog.V(4).Infoln("post result", string(respBody))
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unmarshalErr := json.Unmarshal(respBody, &ret)
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if unmarshalErr != nil {
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glog.V(0).Infoln("failing to read upload resonse", r.RequestURI, string(respBody))
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writeJsonError(w, r, http.StatusInternalServerError, unmarshalErr)
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err = unmarshalErr
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return
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}
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if ret.Error != "" {
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err = errors.New(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, err)
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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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err = fmt.Errorf("can not to write to folder %s without a file name", path)
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fs.filer.DeleteFileByFileId(fileId)
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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, err)
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return
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}
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}
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if etag != "" {
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ret.ETag = etag
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}
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return
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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(context.Background(), 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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