package operation import ( "context" "fmt" "github.com/chrislusf/seaweedfs/weed/storage/needle" "google.golang.org/grpc" "github.com/chrislusf/seaweedfs/weed/pb/master_pb" "github.com/chrislusf/seaweedfs/weed/security" ) type VolumeAssignRequest struct { Count uint64 Replication string Collection string Ttl string DiskType string DataCenter string Rack string DataNode string WritableVolumeCount uint32 } type AssignResultReplica struct { Url string `json:"url,omitempty"` PublicUrl string `json:"publicUrl,omitempty"` } type AssignResult struct { Fid string `json:"fid,omitempty"` Url string `json:"url,omitempty"` PublicUrl string `json:"publicUrl,omitempty"` Count uint64 `json:"count,omitempty"` Error string `json:"error,omitempty"` Auth security.EncodedJwt `json:"auth,omitempty"` Replicas []AssignResultReplica `json:"replicas,omitempty"` } func Assign(masterFn GetMasterFn, grpcDialOption grpc.DialOption, primaryRequest *VolumeAssignRequest, alternativeRequests ...*VolumeAssignRequest) (*AssignResult, error) { var requests []*VolumeAssignRequest requests = append(requests, primaryRequest) requests = append(requests, alternativeRequests...) var lastError error ret := &AssignResult{} for i, request := range requests { if request == nil { continue } lastError = WithMasterServerClient(masterFn(), grpcDialOption, func(masterClient master_pb.SeaweedClient) error { req := &master_pb.AssignRequest{ Count: request.Count, Replication: request.Replication, Collection: request.Collection, Ttl: request.Ttl, DiskType: request.DiskType, DataCenter: request.DataCenter, Rack: request.Rack, DataNode: request.DataNode, WritableVolumeCount: request.WritableVolumeCount, } resp, grpcErr := masterClient.Assign(context.Background(), req) if grpcErr != nil { return grpcErr } ret.Count = resp.Count ret.Fid = resp.Fid ret.Url = resp.Url ret.PublicUrl = resp.PublicUrl ret.Error = resp.Error ret.Auth = security.EncodedJwt(resp.Auth) for _, r := range resp.Replicas { ret.Replicas = append(ret.Replicas, AssignResultReplica{ Url: r.Url, PublicUrl: r.PublicUrl, }) } if resp.Error != "" { return fmt.Errorf("assignRequest: %v", resp.Error) } return nil }) if lastError != nil { continue } if ret.Count <= 0 { lastError = fmt.Errorf("assign failure %d: %v", i+1, ret.Error) continue } break } return ret, lastError } func LookupJwt(master string, grpcDialOption grpc.DialOption, fileId string) (token security.EncodedJwt) { WithMasterServerClient(master, grpcDialOption, func(masterClient master_pb.SeaweedClient) error { resp, grpcErr := masterClient.LookupVolume(context.Background(), &master_pb.LookupVolumeRequest{ VolumeOrFileIds: []string{fileId}, }) if grpcErr != nil { return grpcErr } if len(resp.VolumeIdLocations) == 0 { return nil } token = security.EncodedJwt(resp.VolumeIdLocations[0].Auth) return nil }) return } type StorageOption struct { Replication string DiskType string Collection string DataCenter string Rack string TtlSeconds int32 Fsync bool VolumeGrowthCount uint32 } func (so *StorageOption) TtlString() string { return needle.SecondsToTTL(so.TtlSeconds) } func (so *StorageOption) ToAssignRequests(count int) (ar *VolumeAssignRequest, altRequest *VolumeAssignRequest) { ar = &VolumeAssignRequest{ Count: uint64(count), Replication: so.Replication, Collection: so.Collection, Ttl: so.TtlString(), DiskType: so.DiskType, DataCenter: so.DataCenter, Rack: so.Rack, WritableVolumeCount: so.VolumeGrowthCount, } if so.DataCenter != "" || so.Rack != "" { altRequest = &VolumeAssignRequest{ Count: uint64(count), Replication: so.Replication, Collection: so.Collection, Ttl: so.TtlString(), DiskType: so.DiskType, DataCenter: "", Rack: "", WritableVolumeCount: so.VolumeGrowthCount, } } return }