seaweedfs/weed/operation/assign_file_id.go

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package operation
import (
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"context"
"fmt"
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"github.com/chrislusf/seaweedfs/weed/storage/needle"
"google.golang.org/grpc"
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
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"github.com/chrislusf/seaweedfs/weed/security"
)
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type VolumeAssignRequest struct {
Count uint64
Replication string
Collection string
Ttl string
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DiskType string
DataCenter string
Rack string
DataNode string
WritableVolumeCount uint32
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}
type AssignResult struct {
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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"`
}
func Assign(masterFn GetMasterFn, grpcDialOption grpc.DialOption, primaryRequest *VolumeAssignRequest, alternativeRequests ...*VolumeAssignRequest) (*AssignResult, error) {
var requests []*VolumeAssignRequest
requests = append(requests, primaryRequest)
requests = append(requests, alternativeRequests...)
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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{
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Count: request.Count,
Replication: request.Replication,
Collection: request.Collection,
Ttl: request.Ttl,
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DiskType: request.DiskType,
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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
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ret.Auth = security.EncodedJwt(resp.Auth)
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
}
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break
}
return ret, lastError
}
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func LookupJwt(master string, grpcDialOption grpc.DialOption, fileId string) (token security.EncodedJwt) {
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WithMasterServerClient(master, grpcDialOption, func(masterClient master_pb.SeaweedClient) error {
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resp, grpcErr := masterClient.LookupVolume(context.Background(), &master_pb.LookupVolumeRequest{
VolumeOrFileIds: []string{fileId},
})
if grpcErr != nil {
return grpcErr
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}
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if len(resp.VolumeIdLocations) == 0 {
return nil
}
token = security.EncodedJwt(resp.VolumeIdLocations[0].Auth)
return nil
})
return
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}
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type StorageOption struct {
Replication string
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DiskType string
Collection string
DataCenter string
Rack string
TtlSeconds int32
Fsync bool
VolumeGrowthCount uint32
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}
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(),
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DiskType: so.DiskType,
DataCenter: so.DataCenter,
Rack: so.Rack,
WritableVolumeCount: so.VolumeGrowthCount,
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}
if so.DataCenter != "" || so.Rack != "" {
altRequest = &VolumeAssignRequest{
Count: uint64(count),
Replication: so.Replication,
Collection: so.Collection,
Ttl: so.TtlString(),
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DiskType: so.DiskType,
DataCenter: "",
Rack: "",
WritableVolumeCount: so.VolumeGrowthCount,
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}
}
return
}