mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
271 lines
7.7 KiB
Go
271 lines
7.7 KiB
Go
package shell
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import (
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"context"
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"errors"
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"flag"
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"fmt"
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"io"
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"net/http"
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"strings"
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"github.com/seaweedfs/seaweedfs/weed/storage/needle"
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"github.com/seaweedfs/seaweedfs/weed/wdclient"
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"github.com/seaweedfs/seaweedfs/weed/operation"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
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"github.com/seaweedfs/seaweedfs/weed/util"
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)
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var (
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client *http.Client
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)
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func init() {
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client = &http.Client{}
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Commands = append(Commands, &commandFsMergeVolumes{})
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}
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type commandFsMergeVolumes struct {
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volumes map[needle.VolumeId]*master_pb.VolumeInformationMessage
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}
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func (c *commandFsMergeVolumes) Name() string {
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return "fs.mergeVolumes"
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}
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func (c *commandFsMergeVolumes) Help() string {
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return `re-locate chunks into target volumes and try to clear lighter volumes.
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This would help clear half-full volumes and let vacuum system to delete them later.
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fs.mergeVolumes -toVolumeId=y [-fromVolumeId=x] [-apply] /dir/
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`
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}
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func (c *commandFsMergeVolumes) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
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dir, err := commandEnv.parseUrl(findInputDirectory(args))
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if err != nil {
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return err
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}
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dir = strings.TrimRight(dir, "/")
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fsMergeVolumesCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
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fromVolumeArg := fsMergeVolumesCommand.Uint("fromVolumeId", 0, "move chunks with this volume id")
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toVolumeArg := fsMergeVolumesCommand.Uint("toVolumeId", 0, "change chunks to this volume id")
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apply := fsMergeVolumesCommand.Bool("apply", false, "applying the metadata changes")
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if err = fsMergeVolumesCommand.Parse(args); err != nil {
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return err
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}
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fromVolumeId := needle.VolumeId(*fromVolumeArg)
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toVolumeId := needle.VolumeId(*toVolumeArg)
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if toVolumeId == 0 {
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return fmt.Errorf("volume id can not be zero")
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}
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c.reloadVolumesInfo(commandEnv.MasterClient)
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toVolumeInfo, err := c.getVolumeInfoById(toVolumeId)
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if err != nil {
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return err
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}
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if toVolumeInfo.ReadOnly {
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return fmt.Errorf("volume is readonly: %d", toVolumeId)
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}
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if fromVolumeId != 0 {
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if fromVolumeId == toVolumeId {
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return fmt.Errorf("no volume id changes, %d == %d", fromVolumeId, toVolumeId)
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}
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compatible, err := c.volumesAreCompatible(fromVolumeId, toVolumeId)
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if err != nil {
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return fmt.Errorf("cannot determine volumes are compatible: %d and %d", fromVolumeId, toVolumeId)
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}
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if !compatible {
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return fmt.Errorf("volume %d is not compatible with volume %d", fromVolumeId, toVolumeId)
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}
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}
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defer client.CloseIdleConnections()
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compatibility := make(map[string]bool)
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return commandEnv.WithFilerClient(false, func(filerClient filer_pb.SeaweedFilerClient) error {
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return filer_pb.TraverseBfs(commandEnv, util.FullPath(dir), func(parentPath util.FullPath, entry *filer_pb.Entry) {
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if !entry.IsDirectory {
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for _, chunk := range entry.Chunks {
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if chunk.IsChunkManifest {
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fmt.Printf("Change volume id for large file is not implemented yet: %s/%s\n", parentPath, entry.Name)
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continue
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}
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chunkVolumeId := needle.VolumeId(chunk.Fid.VolumeId)
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if chunkVolumeId == toVolumeId || (fromVolumeId != 0 && fromVolumeId != chunkVolumeId) {
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continue
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}
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cacheKey := fmt.Sprintf("%d-%d", chunkVolumeId, toVolumeId)
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compatible, cached := compatibility[cacheKey]
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if !cached {
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compatible, err = c.volumesAreCompatible(chunkVolumeId, toVolumeId)
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if err != nil {
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_ = fmt.Errorf("cannot determine volumes are compatible: %d and %d", chunkVolumeId, toVolumeId)
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return
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}
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compatibility[cacheKey] = compatible
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}
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if !compatible {
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if fromVolumeId != 0 {
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_ = fmt.Errorf("volumes are incompatible: %d and %d", fromVolumeId, toVolumeId)
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return
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}
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continue
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}
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path := parentPath.Child(entry.Name)
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fmt.Printf("move %s(%s)\n", path, chunk.GetFileIdString())
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if !*apply {
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continue
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}
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if err = moveChunk(chunk, toVolumeId, commandEnv.MasterClient); err != nil {
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fmt.Printf("failed to move %s/%s: %v\n", path, chunk.GetFileIdString(), err)
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continue
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}
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if err = filer_pb.UpdateEntry(filerClient, &filer_pb.UpdateEntryRequest{
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Directory: string(parentPath),
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Entry: entry,
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}); err != nil {
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fmt.Printf("failed to update %s: %v\n", path, err)
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}
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}
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}
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})
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})
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}
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func (c *commandFsMergeVolumes) getVolumeInfoById(vid needle.VolumeId) (*master_pb.VolumeInformationMessage, error) {
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info := c.volumes[vid]
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var err error
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if info == nil {
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err = errors.New("cannot find volume")
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}
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return info, err
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}
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func (c *commandFsMergeVolumes) volumesAreCompatible(src needle.VolumeId, dest needle.VolumeId) (bool, error) {
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srcInfo, err := c.getVolumeInfoById(src)
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if err != nil {
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return false, err
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}
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destInfo, err := c.getVolumeInfoById(dest)
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if err != nil {
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return false, err
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}
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return (srcInfo.Collection == destInfo.Collection &&
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srcInfo.Ttl == destInfo.Ttl &&
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srcInfo.ReplicaPlacement == destInfo.ReplicaPlacement), nil
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}
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func (c *commandFsMergeVolumes) reloadVolumesInfo(masterClient *wdclient.MasterClient) error {
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c.volumes = make(map[needle.VolumeId]*master_pb.VolumeInformationMessage)
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return masterClient.WithClient(false, func(client master_pb.SeaweedClient) error {
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volumes, err := client.VolumeList(context.Background(), &master_pb.VolumeListRequest{})
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if err != nil {
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return err
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}
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for _, dc := range volumes.TopologyInfo.DataCenterInfos {
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for _, rack := range dc.RackInfos {
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for _, node := range rack.DataNodeInfos {
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for _, disk := range node.DiskInfos {
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for _, volume := range disk.VolumeInfos {
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vid := needle.VolumeId(volume.Id)
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if found := c.volumes[vid]; found == nil {
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c.volumes[vid] = volume
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}
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}
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}
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}
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}
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}
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return nil
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})
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}
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func moveChunk(chunk *filer_pb.FileChunk, toVolumeId needle.VolumeId, masterClient *wdclient.MasterClient) error {
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fromFid := needle.NewFileId(needle.VolumeId(chunk.Fid.VolumeId), chunk.Fid.FileKey, chunk.Fid.Cookie)
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toFid := needle.NewFileId(toVolumeId, chunk.Fid.FileKey, chunk.Fid.Cookie)
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downloadURLs, err := masterClient.LookupVolumeServerUrl(fromFid.VolumeId.String())
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if err != nil {
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return err
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}
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downloadURL := fmt.Sprintf("http://%s/%s", downloadURLs[0], fromFid.String())
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uploadURLs, err := masterClient.LookupVolumeServerUrl(toVolumeId.String())
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if err != nil {
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return err
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}
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uploadURL := fmt.Sprintf("http://%s/%s", uploadURLs[0], toFid.String())
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resp, reader, err := readUrl(downloadURL)
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if err != nil {
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return err
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}
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defer util.CloseResponse(resp)
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defer reader.Close()
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var filename string
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contentDisposition := resp.Header.Get("Content-Disposition")
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if len(contentDisposition) > 0 {
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idx := strings.Index(contentDisposition, "filename=")
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if idx != -1 {
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filename = contentDisposition[idx+len("filename="):]
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filename = strings.Trim(filename, "\"")
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}
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}
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contentType := resp.Header.Get("Content-Type")
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isCompressed := resp.Header.Get("Content-Encoding") == "gzip"
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md5 := resp.Header.Get("Content-MD5")
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_, err, _ = operation.Upload(reader, &operation.UploadOption{
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UploadUrl: uploadURL,
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Filename: filename,
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IsInputCompressed: isCompressed,
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Cipher: false,
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MimeType: contentType,
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PairMap: nil,
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Md5: md5,
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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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chunk.Fid.VolumeId = uint32(toVolumeId)
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chunk.FileId = ""
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return nil
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}
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func readUrl(fileUrl string) (*http.Response, io.ReadCloser, error) {
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req, err := http.NewRequest("GET", fileUrl, nil)
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if err != nil {
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return nil, nil, err
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}
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req.Header.Add("Accept-Encoding", "gzip")
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r, err := client.Do(req)
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if err != nil {
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return nil, nil, err
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}
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if r.StatusCode >= 400 {
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util.CloseResponse(r)
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return nil, nil, fmt.Errorf("%s: %s", fileUrl, r.Status)
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}
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return r, r.Body, nil
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}
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