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package weed_server
import (
"context"
"fmt"
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
"github.com/chrislusf/seaweedfs/weed/topology"
"github.com/chrislusf/seaweedfs/weed/storage"
)
func (ms *MasterServer) LookupVolume(ctx context.Context, req *master_pb.LookupVolumeRequest) (*master_pb.LookupVolumeResponse, error) {
resp := &master_pb.LookupVolumeResponse{}
volumeLocations := ms.lookupVolumeId(req.VolumeIds, 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,
})
}
resp.VolumeIdLocations = append(resp.VolumeIdLocations, &master_pb.LookupVolumeResponse_VolumeIdLocation{
VolumeId: result.VolumeId,
Locations: locations,
Error: result.Error,
})
}
return resp, nil
}
func (ms *MasterServer) Assign(ctx context.Context, req *master_pb.AssignRequest) (*master_pb.AssignResponse, error) {
if req.Count == 0 {
req.Count = 1
}
if req.Replication == "" {
req.Replication = ms.defaultReplicaPlacement
}
replicaPlacement, err := storage.NewReplicaPlacementFromString(req.Replication)
if err != nil {
return nil, err
}
ttl, err := storage.ReadTTL(req.Ttl)
if err != nil {
return nil, err
}
option := &topology.VolumeGrowOption{
Collection: req.Collection,
ReplicaPlacement: replicaPlacement,
Ttl: ttl,
Prealloacte: ms.preallocate,
DataCenter: req.DataCenter,
Rack: req.Rack,
DataNode: req.DataNode,
}
if !ms.Topo.HasWritableVolume(option) {
if ms.Topo.FreeSpace() <= 0 {
return nil, fmt.Errorf("No free volumes left!")
}
ms.vgLock.Lock()
if !ms.Topo.HasWritableVolume(option) {
if _, err = ms.vg.AutomaticGrowByType(option, ms.Topo); err != nil {
ms.vgLock.Unlock()
return nil, fmt.Errorf("Cannot grow volume group! %v", err)
}
}
ms.vgLock.Unlock()
}
fid, count, dn, err := ms.Topo.PickForWrite(req.Count, option)
if err != nil {
return nil, fmt.Errorf("%v", err)
}
return &master_pb.AssignResponse{
Fid: fid,
Url: dn.Url(),
PublicUrl: dn.PublicUrl,
Count: count,
}, nil
}
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