mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-06-02 16:50:25 +02:00
76 lines
2.3 KiB
Go
76 lines
2.3 KiB
Go
package remote_storage
|
|
|
|
import (
|
|
"fmt"
|
|
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
|
|
"io"
|
|
"strings"
|
|
"sync"
|
|
)
|
|
|
|
func ParseLocation(remote string) (loc *filer_pb.RemoteStorageLocation) {
|
|
loc = &filer_pb.RemoteStorageLocation{}
|
|
if strings.HasSuffix(string(remote), "/") {
|
|
remote = remote[:len(remote)-1]
|
|
}
|
|
parts := strings.SplitN(string(remote), "/", 3)
|
|
if len(parts) >= 1 {
|
|
loc.Name = parts[0]
|
|
}
|
|
if len(parts) >= 2 {
|
|
loc.Bucket = parts[1]
|
|
}
|
|
loc.Path = string(remote[len(loc.Name)+1+len(loc.Bucket):])
|
|
if loc.Path == "" {
|
|
loc.Path = "/"
|
|
}
|
|
return
|
|
}
|
|
|
|
type VisitFunc func(dir string, name string, isDirectory bool, remoteEntry *filer_pb.RemoteEntry) error
|
|
|
|
type RemoteStorageClient interface {
|
|
Traverse(loc *filer_pb.RemoteStorageLocation, visitFn VisitFunc) error
|
|
ReadFile(loc *filer_pb.RemoteStorageLocation, offset int64, size int64) (data []byte, err error)
|
|
WriteFile(loc *filer_pb.RemoteStorageLocation, entry *filer_pb.Entry, reader io.Reader) (remoteEntry *filer_pb.RemoteEntry, err error)
|
|
UpdateFileMetadata(loc *filer_pb.RemoteStorageLocation, entry *filer_pb.Entry) (err error)
|
|
DeleteFile(loc *filer_pb.RemoteStorageLocation) (err error)
|
|
}
|
|
|
|
type RemoteStorageClientMaker interface {
|
|
Make(remoteConf *filer_pb.RemoteConf) (RemoteStorageClient, error)
|
|
}
|
|
|
|
var (
|
|
RemoteStorageClientMakers = make(map[string]RemoteStorageClientMaker)
|
|
remoteStorageClients = make(map[string]RemoteStorageClient)
|
|
remoteStorageClientsLock sync.Mutex
|
|
)
|
|
|
|
func makeRemoteStorageClient(remoteConf *filer_pb.RemoteConf) (RemoteStorageClient, error) {
|
|
maker, found := RemoteStorageClientMakers[remoteConf.Type]
|
|
if !found {
|
|
return nil, fmt.Errorf("remote storage type %s not found", remoteConf.Type)
|
|
}
|
|
return maker.Make(remoteConf)
|
|
}
|
|
|
|
func GetRemoteStorage(remoteConf *filer_pb.RemoteConf) (RemoteStorageClient, error) {
|
|
remoteStorageClientsLock.Lock()
|
|
defer remoteStorageClientsLock.Unlock()
|
|
|
|
existingRemoteStorageClient, found := remoteStorageClients[remoteConf.Name]
|
|
if found {
|
|
return existingRemoteStorageClient, nil
|
|
}
|
|
|
|
newRemoteStorageClient, err := makeRemoteStorageClient(remoteConf)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("make remote storage client %s: %v", remoteConf.Name, err)
|
|
}
|
|
|
|
remoteStorageClients[remoteConf.Name] = newRemoteStorageClient
|
|
|
|
return newRemoteStorageClient, nil
|
|
}
|