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73 lines
1.7 KiB
73 lines
1.7 KiB
package remote_storage
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import (
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"context"
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"errors"
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"github.com/chrislusf/seaweedfs/weed/pb"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/util"
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"google.golang.org/grpc"
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)
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const (
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SyncKeyPrefix = "remote.sync."
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)
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func GetSyncOffset(grpcDialOption grpc.DialOption, filer pb.ServerAddress, dir string) (lastOffsetTsNs int64, readErr error) {
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dirHash := uint32(util.HashStringToLong(dir))
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readErr = pb.WithFilerClient(false, filer, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
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syncKey := []byte(SyncKeyPrefix + "____")
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util.Uint32toBytes(syncKey[len(SyncKeyPrefix):len(SyncKeyPrefix)+4], dirHash)
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resp, err := client.KvGet(context.Background(), &filer_pb.KvGetRequest{Key: syncKey})
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if err != nil {
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return err
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}
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if len(resp.Error) != 0 {
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return errors.New(resp.Error)
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}
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if len(resp.Value) < 8 {
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return nil
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}
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lastOffsetTsNs = int64(util.BytesToUint64(resp.Value))
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return nil
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})
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return
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}
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func SetSyncOffset(grpcDialOption grpc.DialOption, filer pb.ServerAddress, dir string, offsetTsNs int64) error {
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dirHash := uint32(util.HashStringToLong(dir))
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return pb.WithFilerClient(false, filer, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
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syncKey := []byte(SyncKeyPrefix + "____")
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util.Uint32toBytes(syncKey[len(SyncKeyPrefix):len(SyncKeyPrefix)+4], dirHash)
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valueBuf := make([]byte, 8)
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util.Uint64toBytes(valueBuf, uint64(offsetTsNs))
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resp, err := client.KvPut(context.Background(), &filer_pb.KvPutRequest{
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Key: syncKey,
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Value: valueBuf,
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})
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if err != nil {
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return err
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}
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if len(resp.Error) != 0 {
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return errors.New(resp.Error)
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}
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return nil
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})
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}
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