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package weed_server
import (
"context"
"fmt"
"github.com/chrislusf/seaweedfs/weed/storage/types"
"math/rand"
"net/http"
"strconv"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
"github.com/chrislusf/seaweedfs/weed/storage/backend/memory_map"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"github.com/chrislusf/seaweedfs/weed/storage/super_block"
"github.com/chrislusf/seaweedfs/weed/topology"
"github.com/chrislusf/seaweedfs/weed/util"
)
func (ms *MasterServer) collectionDeleteHandler(w http.ResponseWriter, r *http.Request) {
collectionName := r.FormValue("collection")
collection, ok := ms.Topo.FindCollection(collectionName)
if !ok {
writeJsonError(w, r, http.StatusBadRequest, fmt.Errorf("collection %s does not exist", collectionName))
return
}
for _, server := range collection.ListVolumeServers() {
err := operation.WithVolumeServerClient(server.Url(), ms.grpcDialOption, func(client volume_server_pb.VolumeServerClient) error {
_, deleteErr := client.DeleteCollection(context.Background(), &volume_server_pb.DeleteCollectionRequest{
Collection: collection.Name,
})
return deleteErr
})
if err != nil {
writeJsonError(w, r, http.StatusInternalServerError, err)
return
}
}
ms.Topo.DeleteCollection(collectionName)
w.WriteHeader(http.StatusNoContent)
return
}
func (ms *MasterServer) dirStatusHandler(w http.ResponseWriter, r *http.Request) {
m := make(map[string]interface{})
m["Version"] = util.Version()
m["Topology"] = ms.Topo.ToMap()
writeJsonQuiet(w, r, http.StatusOK, m)
}
func (ms *MasterServer) volumeVacuumHandler(w http.ResponseWriter, r *http.Request) {
gcString := r.FormValue("garbageThreshold")
gcThreshold := ms.option.GarbageThreshold
if gcString != "" {
var err error
gcThreshold, err = strconv.ParseFloat(gcString, 32)
if err != nil {
glog.V(0).Infof("garbageThreshold %s is not a valid float number: %v", gcString, err)
writeJsonError(w, r, http.StatusNotAcceptable, fmt.Errorf("garbageThreshold %s is not a valid float number", gcString))
return
}
}
// glog.Infoln("garbageThreshold =", gcThreshold)
ms.Topo.Vacuum(ms.grpcDialOption, gcThreshold, ms.preallocateSize)
ms.dirStatusHandler(w, r)
}
func (ms *MasterServer) volumeGrowHandler(w http.ResponseWriter, r *http.Request) {
count := 0
option, err := ms.getVolumeGrowOption(r)
if err != nil {
writeJsonError(w, r, http.StatusNotAcceptable, err)
return
}
if count, err = strconv.Atoi(r.FormValue("count")); err == nil {
if ms.Topo.AvailableSpaceFor(option) < int64(count*option.ReplicaPlacement.GetCopyCount()) {
err = fmt.Errorf("only %d volumes left, not enough for %d", ms.Topo.AvailableSpaceFor(option), count*option.ReplicaPlacement.GetCopyCount())
} else {
count, err = ms.vg.GrowByCountAndType(ms.grpcDialOption, count, option, ms.Topo)
}
} else {
err = fmt.Errorf("can not parse parameter count %s", r.FormValue("count"))
}
if err != nil {
writeJsonError(w, r, http.StatusNotAcceptable, err)
} else {
writeJsonQuiet(w, r, http.StatusOK, map[string]interface{}{"count": count})
}
}
func (ms *MasterServer) volumeStatusHandler(w http.ResponseWriter, r *http.Request) {
m := make(map[string]interface{})
m["Version"] = util.Version()
m["Volumes"] = ms.Topo.ToVolumeMap()
writeJsonQuiet(w, r, http.StatusOK, m)
}
func (ms *MasterServer) redirectHandler(w http.ResponseWriter, r *http.Request) {
vid, _, _, _, _ := parseURLPath(r.URL.Path)
collection := r.FormValue("collection")
location := ms.findVolumeLocation(collection, vid)
if location.Error == "" {
loc := location.Locations[rand.Intn(len(location.Locations))]
var url string
if r.URL.RawQuery != "" {
url = util.NormalizeUrl(loc.PublicUrl) + r.URL.Path + "?" + r.URL.RawQuery
} else {
url = util.NormalizeUrl(loc.PublicUrl) + r.URL.Path
}
http.Redirect(w, r, url, http.StatusPermanentRedirect)
} else {
writeJsonError(w, r, http.StatusNotFound, fmt.Errorf("volume id %s not found: %s", vid, location.Error))
}
}
func (ms *MasterServer) selfUrl(r *http.Request) string {
if r.Host != "" {
return r.Host
}
return "localhost:" + strconv.Itoa(ms.option.Port)
}
func (ms *MasterServer) submitFromMasterServerHandler(w http.ResponseWriter, r *http.Request) {
if ms.Topo.IsLeader() {
submitForClientHandler(w, r, func()string{return ms.selfUrl(r)}, ms.grpcDialOption)
} else {
masterUrl, err := ms.Topo.Leader()
if err != nil {
writeJsonError(w, r, http.StatusInternalServerError, err)
} else {
submitForClientHandler(w, r, func()string{return masterUrl}, ms.grpcDialOption)
}
}
}
func (ms *MasterServer) HasWritableVolume(option *topology.VolumeGrowOption) bool {
vl := ms.Topo.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.DiskType)
return vl.GetActiveVolumeCount(option) > 0
}
func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGrowOption, error) {
replicationString := r.FormValue("replication")
if replicationString == "" {
replicationString = ms.option.DefaultReplicaPlacement
}
replicaPlacement, err := super_block.NewReplicaPlacementFromString(replicationString)
if err != nil {
return nil, err
}
ttl, err := needle.ReadTTL(r.FormValue("ttl"))
if err != nil {
return nil, err
}
memoryMapMaxSizeMb, err := memory_map.ReadMemoryMapMaxSizeMb(r.FormValue("memoryMapMaxSizeMb"))
if err != nil {
return nil, err
}
diskType := types.ToDiskType(r.FormValue("disk"))
preallocate := ms.preallocateSize
if r.FormValue("preallocate") != "" {
preallocate, err = strconv.ParseInt(r.FormValue("preallocate"), 10, 64)
if err != nil {
return nil, fmt.Errorf("Failed to parse int64 preallocate = %s: %v", r.FormValue("preallocate"), err)
}
}
volumeGrowOption := &topology.VolumeGrowOption{
Collection: r.FormValue("collection"),
ReplicaPlacement: replicaPlacement,
Ttl: ttl,
DiskType: diskType,
Prealloacte: preallocate,
DataCenter: r.FormValue("dataCenter"),
Rack: r.FormValue("rack"),
DataNode: r.FormValue("dataNode"),
MemoryMapMaxSizeMb: memoryMapMaxSizeMb,
}
return volumeGrowOption, nil
}
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