shell: add remote.mount.buckets

1 files changed, 110 insertions, 0 deletions

diff --git a/weed/shell/command_remote_mount_buckets.go b/weed/shell/command_remote_mount_buckets.go
new file mode 100644
index 000000000..f95143dfd
--- /dev/null
+++ b/weed/shell/command_remote_mount_buckets.go
@@ -0,0 +1,110 @@
+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"
+)
+
+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", "", "a already configured storage name")
+	bucketPattern := remoteMountBucketsCommand.String("bucketPattern", "", "match existing bucket name with wildcard characters '*' and '?'")
+	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)
+	}
+
+	for _, bucket := range buckets {
+		if *bucketPattern != "" {
+			if matched, _ := filepath.Match(*bucketPattern, bucket.Name); !matched {
+				continue
+			}
+		}
+
+		fmt.Fprintf(writer, "bucket %s\n", bucket.Name)
+		if *apply {
+
+			dir := util.FullPath(fillerBucketsPath).Child(bucket.Name)
+			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
+}