workflow: Add horizontal resharding workflow.

go/cmd/vtctld/plugin_grpcvtworkerclient.go

@@ -0,0 +1,11 @@
+// Copyright 2015, Google Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+// Imports and registers the gRPC vtworker client.
+
+import (
+	_ "github.com/youtube/vitess/go/vt/worker/grpcvtworkerclient"
+)

go/vt/vtctld/workflow.go

@@ -13,6 +13,7 @@ import (
 	"github.com/youtube/vitess/go/vt/topo"
 	"github.com/youtube/vitess/go/vt/vtctl"
 	"github.com/youtube/vitess/go/vt/workflow"
+	"github.com/youtube/vitess/go/vt/workflow/resharding"
 	"github.com/youtube/vitess/go/vt/workflow/topovalidator"
 )
 
@@ -36,6 +37,8 @@ func initWorkflowManager(ts topo.Server) {
 		// Register the Schema Swap workflow.
 		schemaswap.RegisterWorkflowFactory()
 
+		// Register the Horizontal Resharding workflow.
+		resharding.Register()
 		// Unregister the blacklisted workflows.
 		for _, name := range workflowManagerDisable {
 			workflow.Unregister(name)