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- package weed_server
- import (
- "context"
- "net/http"
- "strings"
- "github.com/seaweedfs/seaweedfs/weed/glog"
- "github.com/seaweedfs/seaweedfs/weed/storage/needle"
- "github.com/seaweedfs/seaweedfs/weed/util"
- )
- // add or replace one file Seaweed- prefixed attributes
- // curl -X PUT -H "Seaweed-Name1: value1" http://localhost:8888/path/to/a/file?tagging
- func (fs *FilerServer) PutTaggingHandler(w http.ResponseWriter, r *http.Request) {
- ctx := context.Background()
- path := r.URL.Path
- if strings.HasSuffix(path, "/") {
- path = path[:len(path)-1]
- }
- existingEntry, err := fs.filer.FindEntry(ctx, util.FullPath(path))
- if err != nil {
- writeJsonError(w, r, http.StatusNotFound, err)
- return
- }
- if existingEntry == nil {
- writeJsonError(w, r, http.StatusNotFound, err)
- return
- }
- if existingEntry.Extended == nil {
- existingEntry.Extended = make(map[string][]byte)
- }
- for header, values := range r.Header {
- if strings.HasPrefix(header, needle.PairNamePrefix) {
- for _, value := range values {
- existingEntry.Extended[header] = []byte(value)
- }
- }
- }
- if dbErr := fs.filer.CreateEntry(ctx, existingEntry, false, false, nil, false); dbErr != nil {
- glog.V(0).Infof("failing to update %s tagging : %v", path, dbErr)
- writeJsonError(w, r, http.StatusInternalServerError, err)
- return
- }
- writeJsonQuiet(w, r, http.StatusAccepted, nil)
- return
- }
- // remove all Seaweed- prefixed attributes
- // curl -X DELETE http://localhost:8888/path/to/a/file?tagging
- func (fs *FilerServer) DeleteTaggingHandler(w http.ResponseWriter, r *http.Request) {
- ctx := context.Background()
- path := r.URL.Path
- if strings.HasSuffix(path, "/") {
- path = path[:len(path)-1]
- }
- existingEntry, err := fs.filer.FindEntry(ctx, util.FullPath(path))
- if err != nil {
- writeJsonError(w, r, http.StatusNotFound, err)
- return
- }
- if existingEntry == nil {
- writeJsonError(w, r, http.StatusNotFound, err)
- return
- }
- if existingEntry.Extended == nil {
- existingEntry.Extended = make(map[string][]byte)
- }
- // parse out tags to be deleted
- toDelete := strings.Split(r.URL.Query().Get("tagging"), ",")
- deletions := make(map[string]struct{})
- for _, deletion := range toDelete {
- if deletion != "" {
- deletions[deletion] = struct{}{}
- }
- }
- // delete all tags or specific tags
- hasDeletion := false
- for header, _ := range existingEntry.Extended {
- if strings.HasPrefix(header, needle.PairNamePrefix) {
- if len(deletions) == 0 {
- delete(existingEntry.Extended, header)
- hasDeletion = true
- } else {
- tag := header[len(needle.PairNamePrefix):]
- if _, found := deletions[tag]; found {
- delete(existingEntry.Extended, header)
- hasDeletion = true
- }
- }
- }
- }
- if !hasDeletion {
- writeJsonQuiet(w, r, http.StatusNotModified, nil)
- return
- }
- if dbErr := fs.filer.CreateEntry(ctx, existingEntry, false, false, nil, false); dbErr != nil {
- glog.V(0).Infof("failing to delete %s tagging : %v", path, dbErr)
- writeJsonError(w, r, http.StatusInternalServerError, err)
- return
- }
- writeJsonQuiet(w, r, http.StatusAccepted, nil)
- return
- }
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