mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-11-29 14:31:30 +08:00
105 lines
3.2 KiB
Go
105 lines
3.2 KiB
Go
package weed_server
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import (
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"code.google.com/p/weed-fs/go/operation"
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"code.google.com/p/weed-fs/go/stats"
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"code.google.com/p/weed-fs/go/storage"
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"net/http"
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"strconv"
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"strings"
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)
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func (ms *MasterServer) lookupVolumeId(vids []string, collection string) (volumeLocations map[string]operation.LookupResult) {
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volumeLocations = make(map[string]operation.LookupResult)
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for _, vid := range vids {
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commaSep := strings.Index(vid, ",")
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if commaSep > 0 {
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vid = vid[0:commaSep]
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}
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if _, ok := volumeLocations[vid]; ok {
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continue
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}
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volumeId, err := storage.NewVolumeId(vid)
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if err == nil {
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machines := ms.Topo.Lookup(collection, volumeId)
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if machines != nil {
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var ret []operation.Location
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for _, dn := range machines {
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ret = append(ret, operation.Location{Url: dn.Url(), PublicUrl: dn.PublicUrl})
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}
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volumeLocations[vid] = operation.LookupResult{VolumeId: vid, Locations: ret}
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} else {
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volumeLocations[vid] = operation.LookupResult{VolumeId: vid, Error: "volumeId not found."}
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}
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} else {
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volumeLocations[vid] = operation.LookupResult{VolumeId: vid, Error: "Unknown volumeId format."}
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}
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}
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return
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}
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// Takes one volumeId only, can not do batch lookup
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func (ms *MasterServer) dirLookupHandler(w http.ResponseWriter, r *http.Request) {
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vid := r.FormValue("volumeId")
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commaSep := strings.Index(vid, ",")
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if commaSep > 0 {
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vid = vid[0:commaSep]
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}
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vids := []string{vid}
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collection := r.FormValue("collection") //optional, but can be faster if too many collections
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volumeLocations := ms.lookupVolumeId(vids, collection)
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location := volumeLocations[vid]
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if location.Error != "" {
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w.WriteHeader(http.StatusNotFound)
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}
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writeJsonQuiet(w, r, location)
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}
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// This can take batched volumeIds, &volumeId=x&volumeId=y&volumeId=z
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func (ms *MasterServer) volumeLookupHandler(w http.ResponseWriter, r *http.Request) {
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r.ParseForm()
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vids := r.Form["volumeId"]
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collection := r.FormValue("collection") //optional, but can be faster if too many collections
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volumeLocations := ms.lookupVolumeId(vids, collection)
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writeJsonQuiet(w, r, volumeLocations)
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}
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func (ms *MasterServer) dirAssignHandler(w http.ResponseWriter, r *http.Request) {
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stats.AssignRequest()
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requestedCount, e := strconv.Atoi(r.FormValue("count"))
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if e != nil {
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requestedCount = 1
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}
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option, err := ms.getVolumeGrowOption(r)
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if err != nil {
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w.WriteHeader(http.StatusNotAcceptable)
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writeJsonQuiet(w, r, map[string]string{"error": err.Error()})
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return
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}
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if !ms.Topo.HasWriableVolume(option) {
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if ms.Topo.FreeSpace() <= 0 {
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w.WriteHeader(http.StatusNotFound)
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writeJsonQuiet(w, r, map[string]string{"error": "No free volumes left!"})
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return
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} else {
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ms.vgLock.Lock()
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defer ms.vgLock.Unlock()
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if !ms.Topo.HasWriableVolume(option) {
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if _, err = ms.vg.AutomaticGrowByType(option, ms.Topo); err != nil {
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writeJsonQuiet(w, r, map[string]string{"error": "Cannot grow volume group! " + err.Error()})
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return
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}
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}
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}
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}
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fid, count, dn, err := ms.Topo.PickForWrite(requestedCount, option)
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if err == nil {
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writeJsonQuiet(w, r, map[string]interface{}{"fid": fid, "url": dn.Url(), "publicUrl": dn.PublicUrl, "count": count})
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} else {
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w.WriteHeader(http.StatusNotAcceptable)
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writeJsonQuiet(w, r, map[string]string{"error": err.Error()})
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}
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}
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