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50 lines
1.4 KiB
50 lines
1.4 KiB
package remote_storage
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import (
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"fmt"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"sync"
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)
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type VisitFunc func(dir string, name string, isDirectory bool, remoteEntry *filer_pb.RemoteEntry) error
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type RemoteStorageClient interface {
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Traverse(rootDir string, visitFn VisitFunc) error
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}
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type RemoteStorageClientMaker interface {
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Make(remoteConf *filer_pb.RemoteConf) (RemoteStorageClient, error)
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}
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var (
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RemoteStorageClientMakers = make(map[string]RemoteStorageClientMaker)
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remoteStorageClients = make(map[string]RemoteStorageClient)
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remoteStorageClientsLock sync.Mutex
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)
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func makeRemoteStorageClient(remoteConf *filer_pb.RemoteConf) (RemoteStorageClient, error) {
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maker, found := RemoteStorageClientMakers[remoteConf.Type]
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if !found {
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return nil, fmt.Errorf("remote storage type %s not found", remoteConf.Type)
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}
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return maker.Make(remoteConf)
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}
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func GetRemoteStorage(remoteConf *filer_pb.RemoteConf) (RemoteStorageClient, error) {
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remoteStorageClientsLock.Lock()
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defer remoteStorageClientsLock.Unlock()
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existingRemoteStorageClient, found := remoteStorageClients[remoteConf.Name]
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if found {
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return existingRemoteStorageClient, nil
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}
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newRemoteStorageClient, err := makeRemoteStorageClient(remoteConf)
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if err != nil {
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return nil, fmt.Errorf("make remote storage client %s: %v", remoteConf.Name, err)
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}
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remoteStorageClients[remoteConf.Name] = newRemoteStorageClient
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return newRemoteStorageClient, nil
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}
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