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refactor

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This commit is contained in:
Chris Lu 2021-09-04 05:09:38 -07:00
parent e9ce099453
commit c3db389e42
3 changed files with 66 additions and 64 deletions
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64
weed/filer/remote_mapping.go
View file

@ -4,6 +4,7 @@ import (
"fmt"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/pb/remote_pb"
"github.com/golang/protobuf/proto"
)
func SaveMountMapping(filerClient filer_pb.FilerClient, dir string, remoteStorageLocation *remote_pb.RemoteStorageLocation) (err error) {
@ -36,3 +37,66 @@ func SaveMountMapping(filerClient filer_pb.FilerClient, dir string, remoteStorag
return nil
}
func DeleteMountMapping(filerClient filer_pb.FilerClient, dir string) (err error) {
// read current mapping
var oldContent, newContent []byte
err = filerClient.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
oldContent, err = ReadInsideFiler(client, DirectoryEtcRemote, REMOTE_STORAGE_MOUNT_FILE)
return err
})
if err != nil {
if err != filer_pb.ErrNotFound {
return fmt.Errorf("read existing mapping: %v", err)
}
}
// add new mapping
newContent, err = RemoveRemoteStorageMapping(oldContent, dir)
if err != nil {
return fmt.Errorf("delete mount %s: %v", dir, err)
}
// save back
err = filerClient.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
return SaveInsideFiler(client, DirectoryEtcRemote, REMOTE_STORAGE_MOUNT_FILE, newContent)
})
if err != nil {
return fmt.Errorf("save mapping: %v", err)
}
return nil
}
func AddRemoteStorageMapping(oldContent []byte, dir string, storageLocation *remote_pb.RemoteStorageLocation) (newContent []byte, err error) {
mappings, unmarshalErr := UnmarshalRemoteStorageMappings(oldContent)
if unmarshalErr != nil {
// skip
}
// set the new mapping
mappings.Mappings[dir] = storageLocation
if newContent, err = proto.Marshal(mappings); err != nil {
return oldContent, fmt.Errorf("marshal mappings: %v", err)
}
return
}
func RemoveRemoteStorageMapping(oldContent []byte, dir string) (newContent []byte, err error) {
mappings, unmarshalErr := UnmarshalRemoteStorageMappings(oldContent)
if unmarshalErr != nil {
return nil, unmarshalErr
}
// set the new mapping
delete(mappings.Mappings, dir)
if newContent, err = proto.Marshal(mappings); err != nil {
return oldContent, fmt.Errorf("marshal mappings: %v", err)
}
return
}

32
weed/filer/remote_storage.go
View file

@ -131,38 +131,6 @@ func UnmarshalRemoteStorageMappings(oldContent []byte) (mappings *remote_pb.Remo
return
}
func AddRemoteStorageMapping(oldContent []byte, dir string, storageLocation *remote_pb.RemoteStorageLocation) (newContent []byte, err error) {
mappings, unmarshalErr := UnmarshalRemoteStorageMappings(oldContent)
if unmarshalErr != nil {
// skip
}
// set the new mapping
mappings.Mappings[dir] = storageLocation
if newContent, err = proto.Marshal(mappings); err != nil {
return oldContent, fmt.Errorf("marshal mappings: %v", err)
}
return
}
func RemoveRemoteStorageMapping(oldContent []byte, dir string) (newContent []byte, err error) {
mappings, unmarshalErr := UnmarshalRemoteStorageMappings(oldContent)
if unmarshalErr != nil {
return nil, unmarshalErr
}
// set the new mapping
delete(mappings.Mappings, dir)
if newContent, err = proto.Marshal(mappings); err != nil {
return oldContent, fmt.Errorf("marshal mappings: %v", err)
}
return
}
func ReadMountMappings(grpcDialOption grpc.DialOption, filerAddress string) (mappings *remote_pb.RemoteStorageMapping, readErr error) {
var oldContent []byte
if readErr = pb.WithFilerClient(filerAddress, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {

32
weed/shell/command_remote_unmount.go
View file

@ -62,7 +62,7 @@ func (c *commandRemoteUnmount) Do(args []string, commandEnv *CommandEnv, writer
// store a mount configuration in filer
fmt.Fprintf(writer, "deleting mount for %s ...\n", *dir)
if err = c.deleteMountMapping(commandEnv, *dir); err != nil {
if err = filer.DeleteMountMapping(commandEnv, *dir); err != nil {
return fmt.Errorf("delete mount mapping: %v", err)
}
@ -119,33 +119,3 @@ func (c *commandRemoteUnmount) purgeMountedData(commandEnv *CommandEnv, dir stri
return nil
}
func (c *commandRemoteUnmount) deleteMountMapping(commandEnv *CommandEnv, dir string) (err error) {
// read current mapping
var oldContent, newContent []byte
err = commandEnv.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
oldContent, err = filer.ReadInsideFiler(client, filer.DirectoryEtcRemote, filer.REMOTE_STORAGE_MOUNT_FILE)
return err
})
if err != nil {
if err != filer_pb.ErrNotFound {
return fmt.Errorf("read existing mapping: %v", err)
}
}
// add new mapping
newContent, err = filer.RemoveRemoteStorageMapping(oldContent, dir)
if err != nil {
return fmt.Errorf("delete mount %s: %v", dir, err)
}
// save back
err = commandEnv.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
return filer.SaveInsideFiler(client, filer.DirectoryEtcRemote, filer.REMOTE_STORAGE_MOUNT_FILE, newContent)
})
if err != nil {
return fmt.Errorf("save mapping: %v", err)
}
return nil
}