weed shell: add fs.meta.notify, removing filer.export

3 files changed, 78 insertions, 192 deletions

diff --git a/weed/command/command.go b/weed/command/command.go
index 91b9bf3fc..39a01cc05 100644
--- a/weed/command/command.go
+++ b/weed/command/command.go
@@ -13,7 +13,6 @@ var Commands = []*Command{
 	cmdCompact,
 	cmdCopy,
 	cmdFix,
-	cmdFilerExport,
 	cmdFilerReplicate,
 	cmdServer,
 	cmdMaster,
diff --git a/weed/command/filer_export.go b/weed/command/filer_export.go
deleted file mode 100644
index ed1ee8966..000000000
--- a/weed/command/filer_export.go
+++ /dev/null
@@ -1,191 +0,0 @@
-package command
-
-import (
-	"context"
-	"github.com/chrislusf/seaweedfs/weed/filer2"
-	"github.com/chrislusf/seaweedfs/weed/glog"
-	"github.com/chrislusf/seaweedfs/weed/notification"
-	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
-	"github.com/chrislusf/seaweedfs/weed/server"
-	"github.com/spf13/viper"
-)
-
-func init() {
-	cmdFilerExport.Run = runFilerExport // break init cycle
-}
-
-var cmdFilerExport = &Command{
-	UsageLine: "filer.export -sourceStore=mysql -targetStore=cassandra",
-	Short:     "export meta data in filer store",
-	Long: `Iterate the file tree and export all metadata out
-
-	Both source and target store:
-        * should be a store name already specified in filer.toml
-        * do not need to be enabled state
-
-	If target store is empty, only the directory tree will be listed.
-
-	If target store is "notification", the list of entries will be sent to notification.
-	This is usually used to bootstrap filer replication to a remote system.
-
-  `,
-}
-
-var (
-	// filerExportOutputFile  = cmdFilerExport.Flag.String("output", "", "the output file. If empty, only list out the directory tree")
-	filerExportSourceStore = cmdFilerExport.Flag.String("sourceStore", "", "the source store name in filer.toml, default to currently enabled store")
-	filerExportTargetStore = cmdFilerExport.Flag.String("targetStore", "", "the target store name in filer.toml, or \"notification\" to export all files to message queue")
-	dir                    = cmdFilerExport.Flag.String("dir", "/", "only process files under this directory")
-	dirListLimit           = cmdFilerExport.Flag.Int("dirListLimit", 100000, "limit directory list size")
-	dryRun                 = cmdFilerExport.Flag.Bool("dryRun", false, "not actually moving data")
-	verboseFilerExport     = cmdFilerExport.Flag.Bool("v", false, "verbose entry details")
-)
-
-type statistics struct {
-	directoryCount int
-	fileCount      int
-}
-
-func runFilerExport(cmd *Command, args []string) bool {
-
-	weed_server.LoadConfiguration("filer", true)
-	config := viper.GetViper()
-
-	var sourceStore, targetStore filer2.FilerStore
-
-	for _, store := range filer2.Stores {
-		if store.GetName() == *filerExportSourceStore || *filerExportSourceStore == "" && config.GetBool(store.GetName()+".enabled") {
-			viperSub := config.Sub(store.GetName())
-			if err := store.Initialize(viperSub); err != nil {
-				glog.Fatalf("Failed to initialize source store for %s: %+v",
-					store.GetName(), err)
-			} else {
-				sourceStore = store
-			}
-			break
-		}
-	}
-
-	for _, store := range filer2.Stores {
-		if store.GetName() == *filerExportTargetStore {
-			viperSub := config.Sub(store.GetName())
-			if err := store.Initialize(viperSub); err != nil {
-				glog.Fatalf("Failed to initialize target store for %s: %+v",
-					store.GetName(), err)
-			} else {
-				targetStore = store
-			}
-			break
-		}
-	}
-
-	if sourceStore == nil {
-		glog.Errorf("Failed to find source store %s", *filerExportSourceStore)
-		println("existing data sources are:")
-		for _, store := range filer2.Stores {
-			println("    " + store.GetName())
-		}
-		return false
-	}
-
-	if targetStore == nil && *filerExportTargetStore != "" && *filerExportTargetStore != "notification" {
-		glog.Errorf("Failed to find target store %s", *filerExportTargetStore)
-		println("existing data sources are:")
-		for _, store := range filer2.Stores {
-			println("    " + store.GetName())
-		}
-		return false
-	}
-
-	ctx := context.Background()
-
-	stat := statistics{}
-
-	var fn func(level int, entry *filer2.Entry) error
-
-	if *filerExportTargetStore == "notification" {
-		weed_server.LoadConfiguration("notification", false)
-		v := viper.GetViper()
-		notification.LoadConfiguration(v.Sub("notification"))
-
-		fn = func(level int, entry *filer2.Entry) error {
-			printout(level, entry)
-			if *dryRun {
-				return nil
-			}
-			return notification.Queue.SendMessage(
-				string(entry.FullPath),
-				&filer_pb.EventNotification{
-					NewEntry: entry.ToProtoEntry(),
-				},
-			)
-		}
-	} else if targetStore == nil {
-		fn = printout
-	} else {
-		fn = func(level int, entry *filer2.Entry) error {
-			printout(level, entry)
-			if *dryRun {
-				return nil
-			}
-			return targetStore.InsertEntry(ctx, entry)
-		}
-	}
-
-	doTraverse(ctx, &stat, sourceStore, filer2.FullPath(*dir), 0, fn)
-
-	glog.Infof("processed %d directories, %d files", stat.directoryCount, stat.fileCount)
-
-	return true
-}
-
-func doTraverse(ctx context.Context, stat *statistics, filerStore filer2.FilerStore, parentPath filer2.FullPath, level int, fn func(level int, entry *filer2.Entry) error) {
-
-	limit := *dirListLimit
-	lastEntryName := ""
-	for {
-		entries, err := filerStore.ListDirectoryEntries(ctx, parentPath, lastEntryName, false, limit)
-		if err != nil {
-			break
-		}
-		for _, entry := range entries {
-			if fnErr := fn(level, entry); fnErr != nil {
-				glog.Errorf("failed to process entry: %s", entry.FullPath)
-			}
-			if entry.IsDirectory() {
-				stat.directoryCount++
-				doTraverse(ctx, stat, filerStore, entry.FullPath, level+1, fn)
-			} else {
-				stat.fileCount++
-			}
-			lastEntryName = entry.Name()
-		}
-		if len(entries) < limit {
-			break
-		}
-	}
-}
-
-func printout(level int, entry *filer2.Entry) error {
-	for i := 0; i < level; i++ {
-		if i == level-1 {
-			print("+-")
-		} else {
-			print("| ")
-		}
-	}
-	print(entry.FullPath.Name())
-	if *verboseFilerExport {
-		for _, chunk := range entry.Chunks {
-			print("[")
-			print(chunk.FileId)
-			print(",")
-			print(chunk.Offset)
-			print(",")
-			print(chunk.Size)
-			print(")")
-		}
-	}
-	println()
-	return nil
-}
diff --git a/weed/shell/command_fs_meta_notify.go b/weed/shell/command_fs_meta_notify.go
new file mode 100644
index 000000000..ca4d8da5b
--- /dev/null
+++ b/weed/shell/command_fs_meta_notify.go
@@ -0,0 +1,78 @@
+package shell
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"github.com/chrislusf/seaweedfs/weed/filer2"
+	"github.com/chrislusf/seaweedfs/weed/notification"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	weed_server "github.com/chrislusf/seaweedfs/weed/server"
+	"github.com/spf13/viper"
+)
+
+func init() {
+	commands = append(commands, &commandFsMetaNotify{})
+}
+
+type commandFsMetaNotify struct {
+}
+
+func (c *commandFsMetaNotify) Name() string {
+	return "fs.meta.notify"
+}
+
+func (c *commandFsMetaNotify) Help() string {
+	return `recursively send directory and file meta data to notifiction message queue
+
+	fs.meta.notify	# send meta data from current directory to notification message queue
+
+	The message queue will use it to trigger replication from this filer.
+
+`
+}
+
+func (c *commandFsMetaNotify) Do(args []string, commandEnv *commandEnv, writer io.Writer) (err error) {
+
+	filerServer, filerPort, path, err := commandEnv.parseUrl(findInputDirectory(args))
+	if err != nil {
+		return err
+	}
+
+	weed_server.LoadConfiguration("notification", true)
+	v := viper.GetViper()
+	notification.LoadConfiguration(v.Sub("notification"))
+
+	ctx := context.Background()
+
+	return commandEnv.withFilerClient(ctx, filerServer, filerPort, func(client filer_pb.SeaweedFilerClient) error {
+
+		var dirCount, fileCount uint64
+
+		err = doTraverse(ctx, writer, client, filer2.FullPath(path), func(parentPath filer2.FullPath, entry *filer_pb.Entry) error {
+
+			if entry.IsDirectory {
+				dirCount++
+			} else {
+				fileCount++
+			}
+
+			return notification.Queue.SendMessage(
+				string(parentPath.Child(entry.Name)),
+				&filer_pb.EventNotification{
+					NewEntry: entry,
+				},
+			)
+
+		})
+
+		if err == nil {
+			fmt.Fprintf(writer, "\ntotal notified %d directories, %d files\n", dirCount, fileCount)
+		}
+
+		return err
+
+	})
+
+}