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package weed_server
import (
"context"
"fmt"
"github.com/chrislusf/raft"
"reflect"
"strings"
"sync"
"time"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
"github.com/chrislusf/seaweedfs/weed/security"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"github.com/chrislusf/seaweedfs/weed/storage/super_block"
"github.com/chrislusf/seaweedfs/weed/storage/types"
"github.com/chrislusf/seaweedfs/weed/topology"
)
func (ms *MasterServer) ProcessGrowRequest() {
go func() {
filter := sync.Map{}
for {
req, ok := <-ms.vgCh
if !ok {
break
}
if !ms.Topo.IsLeader() {
//discard buffered requests
time.Sleep(time.Second * 1)
continue
}
// filter out identical requests being processed
found := false
filter.Range(func(k, v interface{}) bool {
if reflect.DeepEqual(k, req) {
found = true
}
return !found
})
option := req.Option
vl := ms.Topo.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.DiskType)
// not atomic but it's okay
if !found && vl.ShouldGrowVolumes(option) {
filter.Store(req, nil)
// we have lock called inside vg
go func() {
glog.V(1).Infoln("starting automatic volume grow")
start := time.Now()
newVidLocations, err := ms.vg.AutomaticGrowByType(req.Option, ms.grpcDialOption, ms.Topo, req.Count)
glog.V(1).Infoln("finished automatic volume grow, cost ", time.Now().Sub(start))
if err == nil {
for _, newVidLocation := range newVidLocations {
ms.broadcastToClients(&master_pb.KeepConnectedResponse{VolumeLocation: newVidLocation})
}
}
vl.DoneGrowRequest()
if req.ErrCh != nil {
req.ErrCh <- err
close(req.ErrCh)
}
filter.Delete(req)
}()
} else {
glog.V(4).Infoln("discard volume grow request")
}
}
}()
}
func (ms *MasterServer) LookupVolume(ctx context.Context, req *master_pb.LookupVolumeRequest) (*master_pb.LookupVolumeResponse, error) {
resp := &master_pb.LookupVolumeResponse{}
volumeLocations := ms.lookupVolumeId(req.VolumeOrFileIds, req.Collection)
for _, result := range volumeLocations {
var locations []*master_pb.Location
for _, loc := range result.Locations {
locations = append(locations, &master_pb.Location{
Url: loc.Url,
PublicUrl: loc.PublicUrl,
})
}
var auth string
if strings.Contains(result.VolumeOrFileId, ",") { // this is a file id
auth = string(security.GenJwtForVolumeServer(ms.guard.SigningKey, ms.guard.ExpiresAfterSec, result.VolumeOrFileId))
}
resp.VolumeIdLocations = append(resp.VolumeIdLocations, &master_pb.LookupVolumeResponse_VolumeIdLocation{
VolumeOrFileId: result.VolumeOrFileId,
Locations: locations,
Error: result.Error,
Auth: auth,
})
}
return resp, nil
}
func (ms *MasterServer) Assign(ctx context.Context, req *master_pb.AssignRequest) (*master_pb.AssignResponse, error) {
if !ms.Topo.IsLeader() {
return nil, raft.NotLeaderError
}
if req.Count == 0 {
req.Count = 1
}
if req.Replication == "" {
req.Replication = ms.option.DefaultReplicaPlacement
}
replicaPlacement, err := super_block.NewReplicaPlacementFromString(req.Replication)
if err != nil {
return nil, err
}
ttl, err := needle.ReadTTL(req.Ttl)
if err != nil {
return nil, err
}
diskType := types.ToDiskType(req.DiskType)
option := &topology.VolumeGrowOption{
Collection: req.Collection,
ReplicaPlacement: replicaPlacement,
Ttl: ttl,
DiskType: diskType,
Preallocate: ms.preallocateSize,
DataCenter: req.DataCenter,
Rack: req.Rack,
DataNode: req.DataNode,
MemoryMapMaxSizeMb: req.MemoryMapMaxSizeMb,
}
vl := ms.Topo.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl, option.DiskType)
if !vl.HasGrowRequest() && vl.ShouldGrowVolumes(option) {
if ms.Topo.AvailableSpaceFor(option) <= 0 {
return nil, fmt.Errorf("no free volumes left for " + option.String())
}
vl.AddGrowRequest()
ms.vgCh <- &topology.VolumeGrowRequest{
Option: option,
Count: int(req.WritableVolumeCount),
}
}
var (
lastErr error
maxTimeout = time.Second * 10
startTime = time.Now()
)
for time.Now().Sub(startTime) < maxTimeout {
fid, count, dnList, err := ms.Topo.PickForWrite(req.Count, option)
if err == nil {
dn := dnList.Head()
var replicas []*master_pb.Location
for _, r := range dnList.Rest() {
replicas = append(replicas, &master_pb.Location{
Url: r.Url(),
PublicUrl: r.PublicUrl,
GrpcPort: uint32(r.GrpcPort),
})
}
return &master_pb.AssignResponse{
Fid: fid,
Location: &master_pb.Location{
Url: dn.Url(),
PublicUrl: dn.PublicUrl,
GrpcPort: uint32(dn.GrpcPort),
},
Count: count,
Auth: string(security.GenJwtForVolumeServer(ms.guard.SigningKey, ms.guard.ExpiresAfterSec, fid)),
Replicas: replicas,
}, nil
}
//glog.V(4).Infoln("waiting for volume growing...")
lastErr = err
time.Sleep(200 * time.Millisecond)
}
return nil, lastErr
}
func (ms *MasterServer) Statistics(ctx context.Context, req *master_pb.StatisticsRequest) (*master_pb.StatisticsResponse, error) {
if !ms.Topo.IsLeader() {
return nil, raft.NotLeaderError
}
if req.Replication == "" {
req.Replication = ms.option.DefaultReplicaPlacement
}
replicaPlacement, err := super_block.NewReplicaPlacementFromString(req.Replication)
if err != nil {
return nil, err
}
ttl, err := needle.ReadTTL(req.Ttl)
if err != nil {
return nil, err
}
volumeLayout := ms.Topo.GetVolumeLayout(req.Collection, replicaPlacement, ttl, types.ToDiskType(req.DiskType))
stats := volumeLayout.Stats()
totalSize := ms.Topo.GetDiskUsages().GetMaxVolumeCount() * int64(ms.option.VolumeSizeLimitMB) * 1024 * 1024
resp := &master_pb.StatisticsResponse{
TotalSize: uint64(totalSize),
UsedSize: stats.UsedSize,
FileCount: stats.FileCount,
}
return resp, nil
}
func (ms *MasterServer) VolumeList(ctx context.Context, req *master_pb.VolumeListRequest) (*master_pb.VolumeListResponse, error) {
if !ms.Topo.IsLeader() {
return nil, raft.NotLeaderError
}
resp := &master_pb.VolumeListResponse{
TopologyInfo: ms.Topo.ToTopologyInfo(),
VolumeSizeLimitMb: uint64(ms.option.VolumeSizeLimitMB),
}
return resp, nil
}
func (ms *MasterServer) LookupEcVolume(ctx context.Context, req *master_pb.LookupEcVolumeRequest) (*master_pb.LookupEcVolumeResponse, error) {
if !ms.Topo.IsLeader() {
return nil, raft.NotLeaderError
}
resp := &master_pb.LookupEcVolumeResponse{}
ecLocations, found := ms.Topo.LookupEcShards(needle.VolumeId(req.VolumeId))
if !found {
return resp, fmt.Errorf("ec volume %d not found", req.VolumeId)
}
resp.VolumeId = req.VolumeId
for shardId, shardLocations := range ecLocations.Locations {
var locations []*master_pb.Location
for _, dn := range shardLocations {
locations = append(locations, &master_pb.Location{
Url: string(dn.Id()),
PublicUrl: dn.PublicUrl,
})
}
resp.ShardIdLocations = append(resp.ShardIdLocations, &master_pb.LookupEcVolumeResponse_EcShardIdLocation{
ShardId: uint32(shardId),
Locations: locations,
})
}
return resp, nil
}
func (ms *MasterServer) VacuumVolume(ctx context.Context, req *master_pb.VacuumVolumeRequest) (*master_pb.VacuumVolumeResponse, error) {
if !ms.Topo.IsLeader() {
return nil, raft.NotLeaderError
}
resp := &master_pb.VacuumVolumeResponse{}
ms.Topo.Vacuum(ms.grpcDialOption, float64(req.GarbageThreshold), req.VolumeId, req.Collection, ms.preallocateSize)
return resp, nil
}