seaweedfs/weed/shell/command_remote_mount_buckets.go
2021-09-06 15:13:38 -07:00

122 lines
3.6 KiB
Go

package shell
import (
"flag"
"fmt"
"github.com/chrislusf/seaweedfs/weed/filer"
"github.com/chrislusf/seaweedfs/weed/pb/remote_pb"
"github.com/chrislusf/seaweedfs/weed/remote_storage"
"github.com/chrislusf/seaweedfs/weed/util"
"io"
"path/filepath"
"regexp"
)
func init() {
Commands = append(Commands, &commandRemoteMountBuckets{})
}
type commandRemoteMountBuckets struct {
}
func (c *commandRemoteMountBuckets) Name() string {
return "remote.mount.buckets"
}
func (c *commandRemoteMountBuckets) Help() string {
return `mount all buckets in remote storage and pull its metadata
# assume a remote storage is configured to name "cloud1"
remote.configure -name=cloud1 -type=s3 -access_key=xxx -secret_key=yyy
# mount all buckets
remote.mount.buckets -remote=cloud1
# after mount, start a separate process to write updates to remote storage
weed filer.remote.sync -filer=<filerHost>:<filerPort> -createBucketAt=cloud1
`
}
func (c *commandRemoteMountBuckets) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
remoteMountBucketsCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
remote := remoteMountBucketsCommand.String("remote", "", "an already configured storage name")
bucketPattern := remoteMountBucketsCommand.String("bucketPattern", "", "match existing bucket name with wildcard characters '*' and '?'")
trimBucketSuffix := remoteMountBucketsCommand.Bool("trimBucketSuffix", true, "remote suffix auto generated by 'weed filer.remote.sync'")
apply := remoteMountBucketsCommand.Bool("apply", false, "apply the mount for listed buckets")
if err = remoteMountBucketsCommand.Parse(args); err != nil {
return nil
}
if *remote == "" {
_, err = listExistingRemoteStorageMounts(commandEnv, writer)
return err
}
// find configuration for remote storage
remoteConf, err := filer.ReadRemoteStorageConf(commandEnv.option.GrpcDialOption, commandEnv.option.FilerAddress, *remote)
if err != nil {
return fmt.Errorf("find configuration for %s: %v", *remote, err)
}
// get storage client
remoteStorageClient, err := remote_storage.GetRemoteStorage(remoteConf)
if err != nil {
return fmt.Errorf("get storage client for %s: %v", *remote, err)
}
buckets, err := remoteStorageClient.ListBuckets()
if err != nil {
return fmt.Errorf("list buckets on %s: %v", *remote, err)
}
fillerBucketsPath, err := readFilerBucketsPath(commandEnv)
if err != nil {
return fmt.Errorf("read filer buckets path: %v", err)
}
hasSuffixPattern, _ := regexp.Compile(".+-[0-9][0-9][0-9][0-9]")
for _, bucket := range buckets {
if *bucketPattern != "" {
if matched, _ := filepath.Match(*bucketPattern, bucket.Name); !matched {
continue
}
}
fmt.Fprintf(writer, "bucket %s\n", bucket.Name)
localBucketName := bucket.Name
if *trimBucketSuffix {
if hasSuffixPattern.MatchString(localBucketName) {
localBucketName = localBucketName[:len(localBucketName)-5]
fmt.Fprintf(writer, " mount bucket %s as %s\n", bucket.Name, localBucketName)
}
}
if *apply {
dir := util.FullPath(fillerBucketsPath).Child(localBucketName)
remoteStorageLocation := &remote_pb.RemoteStorageLocation{
Name: *remote,
Bucket: bucket.Name,
Path: "/",
}
// sync metadata from remote
if err = syncMetadata(commandEnv, writer, string(dir), true, remoteConf, remoteStorageLocation); err != nil {
return fmt.Errorf("pull metadata on %+v: %v", remoteStorageLocation, err)
}
// store a mount configuration in filer
if err = filer.InsertMountMapping(commandEnv, string(dir), remoteStorageLocation); err != nil {
return fmt.Errorf("save mount mapping %s to %+v: %v", dir, remoteStorageLocation, err)
}
}
}
return nil
}