Updated Workflow Template Versions to support IsLatest and added API methods to save, save & publish

2025-09-27 01:56:03 +08:00 · 2020-01-24 10:35:06 -08:00
parent 11ae2e9abb
commit 11e90e17da
12 changed files with 501 additions and 77 deletions
--- a/api/workflow.pb.go
+++ b/api/workflow.pb.go
@@ -495,55 +495,57 @@ func init() {
 func init() { proto.RegisterFile("workflow.proto", fileDescriptor_892c7f566756b0be) }

 var fileDescriptor_892c7f566756b0be = []byte{
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 }

 // Reference imports to suppress errors if they are not otherwise used.
@@ -565,6 +567,7 @@ type WorkflowServiceClient interface {
 	WatchWorkflow(ctx context.Context, in *WatchWorkflowRequest, opts ...grpc.CallOption) (WorkflowService_WatchWorkflowClient, error)
 	GetWorkflowLogs(ctx context.Context, in *GetWorkflowLogsRequest, opts ...grpc.CallOption) (WorkflowService_GetWorkflowLogsClient, error)
 	CreateWorkflowTemplate(ctx context.Context, in *CreateWorkflowTemplateRequest, opts ...grpc.CallOption) (*WorkflowTemplate, error)
+	UpdateWorkflowTemplateVersion(ctx context.Context, in *UpdateWorkflowTemplateVersionRequest, opts ...grpc.CallOption) (*WorkflowTemplate, error)
 	CreateWorkflowTemplateVersion(ctx context.Context, in *CreateWorkflowTemplateRequest, opts ...grpc.CallOption) (*WorkflowTemplate, error)
 	GetWorkflowTemplate(ctx context.Context, in *GetWorkflowTemplateRequest, opts ...grpc.CallOption) (*WorkflowTemplate, error)
 	ListWorkflowTemplateVersions(ctx context.Context, in *ListWorkflowTemplateVersionsRequest, opts ...grpc.CallOption) (*ListWorkflowTemplateVersionsResponse, error)
@@ -679,6 +682,15 @@ func (c *workflowServiceClient) CreateWorkflowTemplate(ctx context.Context, in *
 	return out, nil
 }

+func (c *workflowServiceClient) UpdateWorkflowTemplateVersion(ctx context.Context, in *UpdateWorkflowTemplateVersionRequest, opts ...grpc.CallOption) (*WorkflowTemplate, error) {
+	out := new(WorkflowTemplate)
+	err := c.cc.Invoke(ctx, "/api.WorkflowService/UpdateWorkflowTemplateVersion", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *workflowServiceClient) CreateWorkflowTemplateVersion(ctx context.Context, in *CreateWorkflowTemplateRequest, opts ...grpc.CallOption) (*WorkflowTemplate, error) {
 	out := new(WorkflowTemplate)
 	err := c.cc.Invoke(ctx, "/api.WorkflowService/CreateWorkflowTemplateVersion", in, out, opts...)
@@ -724,6 +736,7 @@ type WorkflowServiceServer interface {
 	WatchWorkflow(*WatchWorkflowRequest, WorkflowService_WatchWorkflowServer) error
 	GetWorkflowLogs(*GetWorkflowLogsRequest, WorkflowService_GetWorkflowLogsServer) error
 	CreateWorkflowTemplate(context.Context, *CreateWorkflowTemplateRequest) (*WorkflowTemplate, error)
+	UpdateWorkflowTemplateVersion(context.Context, *UpdateWorkflowTemplateVersionRequest) (*WorkflowTemplate, error)
 	CreateWorkflowTemplateVersion(context.Context, *CreateWorkflowTemplateRequest) (*WorkflowTemplate, error)
 	GetWorkflowTemplate(context.Context, *GetWorkflowTemplateRequest) (*WorkflowTemplate, error)
 	ListWorkflowTemplateVersions(context.Context, *ListWorkflowTemplateVersionsRequest) (*ListWorkflowTemplateVersionsResponse, error)
@@ -752,6 +765,9 @@ func (*UnimplementedWorkflowServiceServer) GetWorkflowLogs(req *GetWorkflowLogsR
 func (*UnimplementedWorkflowServiceServer) CreateWorkflowTemplate(ctx context.Context, req *CreateWorkflowTemplateRequest) (*WorkflowTemplate, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CreateWorkflowTemplate not implemented")
 }
+func (*UnimplementedWorkflowServiceServer) UpdateWorkflowTemplateVersion(ctx context.Context, req *UpdateWorkflowTemplateVersionRequest) (*WorkflowTemplate, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method UpdateWorkflowTemplateVersion not implemented")
+}
 func (*UnimplementedWorkflowServiceServer) CreateWorkflowTemplateVersion(ctx context.Context, req *CreateWorkflowTemplateRequest) (*WorkflowTemplate, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CreateWorkflowTemplateVersion not implemented")
 }
@@ -883,6 +899,24 @@ func _WorkflowService_CreateWorkflowTemplate_Handler(srv interface{}, ctx contex
 	return interceptor(ctx, in, info, handler)
 }

+func _WorkflowService_UpdateWorkflowTemplateVersion_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(UpdateWorkflowTemplateVersionRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(WorkflowServiceServer).UpdateWorkflowTemplateVersion(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/api.WorkflowService/UpdateWorkflowTemplateVersion",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(WorkflowServiceServer).UpdateWorkflowTemplateVersion(ctx, req.(*UpdateWorkflowTemplateVersionRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _WorkflowService_CreateWorkflowTemplateVersion_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(CreateWorkflowTemplateRequest)
 	if err := dec(in); err != nil {
@@ -975,6 +1009,10 @@ var _WorkflowService_serviceDesc = grpc.ServiceDesc{
 			MethodName: "CreateWorkflowTemplate",
 			Handler:    _WorkflowService_CreateWorkflowTemplate_Handler,
 		},
+		{
+			MethodName: "UpdateWorkflowTemplateVersion",
+			Handler:    _WorkflowService_UpdateWorkflowTemplateVersion_Handler,
+		},
 		{
 			MethodName: "CreateWorkflowTemplateVersion",
 			Handler:    _WorkflowService_CreateWorkflowTemplateVersion_Handler,
--- a/api/workflow.pb.gw.go
+++ b/api/workflow.pb.gw.go
@@ -430,6 +430,120 @@ func local_request_WorkflowService_CreateWorkflowTemplate_0(ctx context.Context,

 }

+func request_WorkflowService_UpdateWorkflowTemplateVersion_0(ctx context.Context, marshaler runtime.Marshaler, client WorkflowServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq UpdateWorkflowTemplateVersionRequest
+	var metadata runtime.ServerMetadata
+
+	newReader, berr := utilities.IOReaderFactory(req.Body)
+	if berr != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", berr)
+	}
+	if err := marshaler.NewDecoder(newReader()).Decode(&protoReq.WorkflowTemplate); err != nil && err != io.EOF {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["namespace"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "namespace")
+	}
+
+	protoReq.Namespace, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "namespace", err)
+	}
+
+	val, ok = pathParams["workflowTemplate.uid"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "workflowTemplate.uid")
+	}
+
+	err = runtime.PopulateFieldFromPath(&protoReq, "workflowTemplate.uid", val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "workflowTemplate.uid", err)
+	}
+
+	val, ok = pathParams["workflowTemplate.version"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "workflowTemplate.version")
+	}
+
+	err = runtime.PopulateFieldFromPath(&protoReq, "workflowTemplate.version", val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "workflowTemplate.version", err)
+	}
+
+	msg, err := client.UpdateWorkflowTemplateVersion(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_WorkflowService_UpdateWorkflowTemplateVersion_0(ctx context.Context, marshaler runtime.Marshaler, server WorkflowServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq UpdateWorkflowTemplateVersionRequest
+	var metadata runtime.ServerMetadata
+
+	newReader, berr := utilities.IOReaderFactory(req.Body)
+	if berr != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", berr)
+	}
+	if err := marshaler.NewDecoder(newReader()).Decode(&protoReq.WorkflowTemplate); err != nil && err != io.EOF {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["namespace"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "namespace")
+	}
+
+	protoReq.Namespace, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "namespace", err)
+	}
+
+	val, ok = pathParams["workflowTemplate.uid"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "workflowTemplate.uid")
+	}
+
+	err = runtime.PopulateFieldFromPath(&protoReq, "workflowTemplate.uid", val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "workflowTemplate.uid", err)
+	}
+
+	val, ok = pathParams["workflowTemplate.version"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "workflowTemplate.version")
+	}
+
+	err = runtime.PopulateFieldFromPath(&protoReq, "workflowTemplate.version", val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "workflowTemplate.version", err)
+	}
+
+	msg, err := server.UpdateWorkflowTemplateVersion(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
 func request_WorkflowService_CreateWorkflowTemplateVersion_0(ctx context.Context, marshaler runtime.Marshaler, client WorkflowServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
 	var protoReq CreateWorkflowTemplateRequest
 	var metadata runtime.ServerMetadata
@@ -940,6 +1054,26 @@ func RegisterWorkflowServiceHandlerServer(ctx context.Context, mux *runtime.Serv

 	})

+	mux.Handle("PUT", pattern_WorkflowService_UpdateWorkflowTemplateVersion_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_WorkflowService_UpdateWorkflowTemplateVersion_0(rctx, inboundMarshaler, server, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_WorkflowService_UpdateWorkflowTemplateVersion_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	mux.Handle("POST", pattern_WorkflowService_CreateWorkflowTemplateVersion_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@@ -1201,6 +1335,26 @@ func RegisterWorkflowServiceHandlerClient(ctx context.Context, mux *runtime.Serv

 	})

+	mux.Handle("PUT", pattern_WorkflowService_UpdateWorkflowTemplateVersion_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_WorkflowService_UpdateWorkflowTemplateVersion_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_WorkflowService_UpdateWorkflowTemplateVersion_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	mux.Handle("POST", pattern_WorkflowService_CreateWorkflowTemplateVersion_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@@ -1317,6 +1471,8 @@ var (

 	pattern_WorkflowService_CreateWorkflowTemplate_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2, 2, 3}, []string{"apis", "v1beta1", "namespace", "workflow_templates"}, "", runtime.AssumeColonVerbOpt(true)))

+	pattern_WorkflowService_UpdateWorkflowTemplateVersion_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2, 2, 3, 1, 0, 4, 1, 5, 4, 2, 5, 1, 0, 4, 1, 5, 6}, []string{"apis", "v1beta1", "namespace", "workflow_templates", "workflowTemplate.uid", "versions", "workflowTemplate.version"}, "", runtime.AssumeColonVerbOpt(true)))
+
 	pattern_WorkflowService_CreateWorkflowTemplateVersion_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2, 2, 3, 1, 0, 4, 1, 5, 4, 2, 5}, []string{"apis", "v1beta1", "namespace", "workflow_templates", "workflowTemplate.uid", "versions"}, "", runtime.AssumeColonVerbOpt(true)))

 	pattern_WorkflowService_GetWorkflowTemplate_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 1, 0, 4, 1, 5, 2, 2, 3, 1, 0, 4, 1, 5, 4}, []string{"apis", "v1beta1", "namespace", "workflow_templates", "uid"}, "", runtime.AssumeColonVerbOpt(true)))
@@ -1341,6 +1497,8 @@ var (

 	forward_WorkflowService_CreateWorkflowTemplate_0 = runtime.ForwardResponseMessage

+	forward_WorkflowService_UpdateWorkflowTemplateVersion_0 = runtime.ForwardResponseMessage
+
 	forward_WorkflowService_CreateWorkflowTemplateVersion_0 = runtime.ForwardResponseMessage

 	forward_WorkflowService_GetWorkflowTemplate_0 = runtime.ForwardResponseMessage
--- a/api/workflow.proto
+++ b/api/workflow.proto
@@ -45,6 +45,13 @@ service WorkflowService {
        };
    }

+    rpc UpdateWorkflowTemplateVersion (UpdateWorkflowTemplateVersionRequest) returns (WorkflowTemplate) {
+        option (google.api.http) = {
+            put: "/apis/v1beta1/{namespace}/workflow_templates/{workflowTemplate.uid}/versions/{workflowTemplate.version}"
+            body: "workflowTemplate"
+        };
+    }
+
    rpc CreateWorkflowTemplateVersion (CreateWorkflowTemplateRequest) returns (WorkflowTemplate) {
        option (google.api.http) = {
            post: "/apis/v1beta1/{namespace}/workflow_templates/{workflowTemplate.uid}/versions"
--- a/api/workflow.swagger.json
+++ b/api/workflow.swagger.json
@@ -207,6 +207,51 @@
        ]
      }
    },
+    "/apis/v1beta1/{namespace}/workflow_templates/{workflowTemplate.uid}/versions/{workflowTemplate.version}": {
+      "put": {
+        "operationId": "UpdateWorkflowTemplateVersion",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/apiWorkflowTemplate"
+            }
+          }
+        },
+        "parameters": [
+          {
+            "name": "namespace",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "workflowTemplate.uid",
+            "in": "path",
+            "required": true,
+            "type": "string"
+          },
+          {
+            "name": "workflowTemplate.version",
+            "in": "path",
+            "required": true,
+            "type": "integer",
+            "format": "int32"
+          },
+          {
+            "name": "body",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/apiWorkflowTemplate"
+            }
+          }
+        ],
+        "tags": [
+          "WorkflowService"
+        ]
+      }
+    },
    "/apis/v1beta1/{namespace}/workflows": {
      "get": {
        "operationId": "ListWorkflows",
@@ -474,6 +519,10 @@
        },
        "manifest": {
          "type": "string"
+        },
+        "isLatest": {
+          "type": "boolean",
+          "format": "boolean"
        }
      }
    },
--- a/api/workflow_template.pb.go
+++ b/api/workflow_template.pb.go
@@ -67,6 +67,53 @@ func (m *CreateWorkflowTemplateRequest) GetWorkflowTemplate() *WorkflowTemplate
 	return nil
 }

+type UpdateWorkflowTemplateVersionRequest struct {
+	Namespace            string            `protobuf:"bytes,1,opt,name=namespace,proto3" json:"namespace,omitempty"`
+	WorkflowTemplate     *WorkflowTemplate `protobuf:"bytes,2,opt,name=workflowTemplate,proto3" json:"workflowTemplate,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *UpdateWorkflowTemplateVersionRequest) Reset()         { *m = UpdateWorkflowTemplateVersionRequest{} }
+func (m *UpdateWorkflowTemplateVersionRequest) String() string { return proto.CompactTextString(m) }
+func (*UpdateWorkflowTemplateVersionRequest) ProtoMessage()    {}
+func (*UpdateWorkflowTemplateVersionRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_b9a07547748a96e8, []int{1}
+}
+
+func (m *UpdateWorkflowTemplateVersionRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_UpdateWorkflowTemplateVersionRequest.Unmarshal(m, b)
+}
+func (m *UpdateWorkflowTemplateVersionRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_UpdateWorkflowTemplateVersionRequest.Marshal(b, m, deterministic)
+}
+func (m *UpdateWorkflowTemplateVersionRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_UpdateWorkflowTemplateVersionRequest.Merge(m, src)
+}
+func (m *UpdateWorkflowTemplateVersionRequest) XXX_Size() int {
+	return xxx_messageInfo_UpdateWorkflowTemplateVersionRequest.Size(m)
+}
+func (m *UpdateWorkflowTemplateVersionRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_UpdateWorkflowTemplateVersionRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_UpdateWorkflowTemplateVersionRequest proto.InternalMessageInfo
+
+func (m *UpdateWorkflowTemplateVersionRequest) GetNamespace() string {
+	if m != nil {
+		return m.Namespace
+	}
+	return ""
+}
+
+func (m *UpdateWorkflowTemplateVersionRequest) GetWorkflowTemplate() *WorkflowTemplate {
+	if m != nil {
+		return m.WorkflowTemplate
+	}
+	return nil
+}
+
 type GetWorkflowTemplateRequest struct {
 	Namespace            string   `protobuf:"bytes,1,opt,name=namespace,proto3" json:"namespace,omitempty"`
 	Uid                  string   `protobuf:"bytes,2,opt,name=uid,proto3" json:"uid,omitempty"`
@@ -80,7 +127,7 @@ func (m *GetWorkflowTemplateRequest) Reset()         { *m = GetWorkflowTemplateR
 func (m *GetWorkflowTemplateRequest) String() string { return proto.CompactTextString(m) }
 func (*GetWorkflowTemplateRequest) ProtoMessage()    {}
 func (*GetWorkflowTemplateRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_b9a07547748a96e8, []int{1}
+	return fileDescriptor_b9a07547748a96e8, []int{2}
 }

 func (m *GetWorkflowTemplateRequest) XXX_Unmarshal(b []byte) error {
@@ -134,7 +181,7 @@ func (m *ListWorkflowTemplateVersionsRequest) Reset()         { *m = ListWorkflo
 func (m *ListWorkflowTemplateVersionsRequest) String() string { return proto.CompactTextString(m) }
 func (*ListWorkflowTemplateVersionsRequest) ProtoMessage()    {}
 func (*ListWorkflowTemplateVersionsRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_b9a07547748a96e8, []int{2}
+	return fileDescriptor_b9a07547748a96e8, []int{3}
 }

 func (m *ListWorkflowTemplateVersionsRequest) XXX_Unmarshal(b []byte) error {
@@ -181,7 +228,7 @@ func (m *ListWorkflowTemplateVersionsResponse) Reset()         { *m = ListWorkfl
 func (m *ListWorkflowTemplateVersionsResponse) String() string { return proto.CompactTextString(m) }
 func (*ListWorkflowTemplateVersionsResponse) ProtoMessage()    {}
 func (*ListWorkflowTemplateVersionsResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_b9a07547748a96e8, []int{3}
+	return fileDescriptor_b9a07547748a96e8, []int{4}
 }

 func (m *ListWorkflowTemplateVersionsResponse) XXX_Unmarshal(b []byte) error {
@@ -227,7 +274,7 @@ func (m *ListWorkflowTemplatesRequest) Reset()         { *m = ListWorkflowTempla
 func (m *ListWorkflowTemplatesRequest) String() string { return proto.CompactTextString(m) }
 func (*ListWorkflowTemplatesRequest) ProtoMessage()    {}
 func (*ListWorkflowTemplatesRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_b9a07547748a96e8, []int{4}
+	return fileDescriptor_b9a07547748a96e8, []int{5}
 }

 func (m *ListWorkflowTemplatesRequest) XXX_Unmarshal(b []byte) error {
@@ -267,7 +314,7 @@ func (m *ListWorkflowTemplatesResponse) Reset()         { *m = ListWorkflowTempl
 func (m *ListWorkflowTemplatesResponse) String() string { return proto.CompactTextString(m) }
 func (*ListWorkflowTemplatesResponse) ProtoMessage()    {}
 func (*ListWorkflowTemplatesResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_b9a07547748a96e8, []int{5}
+	return fileDescriptor_b9a07547748a96e8, []int{6}
 }

 func (m *ListWorkflowTemplatesResponse) XXX_Unmarshal(b []byte) error {
@@ -307,6 +354,7 @@ type WorkflowTemplate struct {
 	Name                 string   `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
 	Version              int32    `protobuf:"varint,3,opt,name=version,proto3" json:"version,omitempty"`
 	Manifest             string   `protobuf:"bytes,4,opt,name=manifest,proto3" json:"manifest,omitempty"`
+	IsLatest             bool     `protobuf:"varint,5,opt,name=isLatest,proto3" json:"isLatest,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -316,7 +364,7 @@ func (m *WorkflowTemplate) Reset()         { *m = WorkflowTemplate{} }
 func (m *WorkflowTemplate) String() string { return proto.CompactTextString(m) }
 func (*WorkflowTemplate) ProtoMessage()    {}
 func (*WorkflowTemplate) Descriptor() ([]byte, []int) {
-	return fileDescriptor_b9a07547748a96e8, []int{6}
+	return fileDescriptor_b9a07547748a96e8, []int{7}
 }

 func (m *WorkflowTemplate) XXX_Unmarshal(b []byte) error {
@@ -365,8 +413,16 @@ func (m *WorkflowTemplate) GetManifest() string {
 	return ""
 }

+func (m *WorkflowTemplate) GetIsLatest() bool {
+	if m != nil {
+		return m.IsLatest
+	}
+	return false
+}
+
 func init() {
 	proto.RegisterType((*CreateWorkflowTemplateRequest)(nil), "api.CreateWorkflowTemplateRequest")
+	proto.RegisterType((*UpdateWorkflowTemplateVersionRequest)(nil), "api.UpdateWorkflowTemplateVersionRequest")
 	proto.RegisterType((*GetWorkflowTemplateRequest)(nil), "api.GetWorkflowTemplateRequest")
 	proto.RegisterType((*ListWorkflowTemplateVersionsRequest)(nil), "api.ListWorkflowTemplateVersionsRequest")
 	proto.RegisterType((*ListWorkflowTemplateVersionsResponse)(nil), "api.ListWorkflowTemplateVersionsResponse")
@@ -378,23 +434,25 @@ func init() {
 func init() { proto.RegisterFile("workflow_template.proto", fileDescriptor_b9a07547748a96e8) }

 var fileDescriptor_b9a07547748a96e8 = []byte{
-	// 286 bytes of a gzipped FileDescriptorProto
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-	0xb3, 0xf0, 0xbb, 0x37, 0xf1, 0x37, 0x98, 0x0d, 0x4c, 0xff, 0xbd, 0x73, 0x05, 0x71, 0x17, 0xb6,
-	0xc9, 0x98, 0x6c, 0x97, 0x4a, 0x61, 0xbc, 0xb2, 0xdb, 0xc6, 0xee, 0xeb, 0xe1, 0x45, 0xd3, 0x09,
-	0xec, 0x95, 0x42, 0xc9, 0x02, 0xad, 0x63, 0x63, 0x3f, 0xf1, 0xd5, 0x3f, 0xfe, 0xf3, 0x7f, 0xff,
-	0xfc, 0x33, 0x00, 0x00, 0xff, 0xff, 0xfd, 0x8f, 0xf0, 0x3d, 0x16, 0x03, 0x00, 0x00,
+	// 316 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x53, 0x41, 0x4b, 0xf3, 0x40,
+	0x10, 0x65, 0x9b, 0xe6, 0xfb, 0xda, 0xf1, 0x52, 0x17, 0xc5, 0xa5, 0xb4, 0x10, 0xd6, 0x1e, 0x72,
+	0xea, 0x41, 0xaf, 0x5e, 0xa4, 0x07, 0x2f, 0x3d, 0x2d, 0x56, 0x8f, 0xb2, 0xb6, 0x53, 0x58, 0x6c,
+	0xb2, 0x6b, 0x76, 0x63, 0xc0, 0x93, 0x9e, 0x04, 0x7f, 0xb5, 0x24, 0x4d, 0x5b, 0x48, 0x1a, 0x91,
+	0x82, 0xde, 0xe6, 0x25, 0x6f, 0x66, 0xde, 0x7b, 0xc3, 0xc2, 0x59, 0xa6, 0x93, 0xa7, 0xe5, 0x4a,
+	0x67, 0x0f, 0x0e, 0x23, 0xb3, 0x92, 0x0e, 0xc7, 0x26, 0xd1, 0x4e, 0x53, 0x4f, 0x1a, 0xc5, 0xdf,
+	0x08, 0x0c, 0x27, 0x09, 0x4a, 0x87, 0xf7, 0x25, 0xed, 0xb6, 0x64, 0x09, 0x7c, 0x4e, 0xd1, 0x3a,
+	0x3a, 0x80, 0x6e, 0x2c, 0x23, 0xb4, 0x46, 0xce, 0x91, 0x91, 0x80, 0x84, 0x5d, 0xb1, 0xfb, 0x40,
+	0xaf, 0xa1, 0x97, 0x55, 0x1a, 0x59, 0x2b, 0x20, 0xe1, 0xd1, 0xc5, 0xe9, 0x58, 0x1a, 0x35, 0xae,
+	0x4d, 0xad, 0xd1, 0xf9, 0x07, 0x81, 0xd1, 0xcc, 0x2c, 0xf6, 0x48, 0xb8, 0xc3, 0xc4, 0x2a, 0x1d,
+	0xff, 0x99, 0x92, 0x25, 0xf4, 0x6f, 0xd0, 0x1d, 0x16, 0x44, 0x0f, 0xbc, 0x54, 0x2d, 0x8a, 0x8d,
+	0x5d, 0x91, 0x97, 0x94, 0xc1, 0xff, 0x97, 0xb5, 0x01, 0xe6, 0x05, 0x24, 0xf4, 0xc5, 0x06, 0xf2,
+	0x19, 0x9c, 0x4f, 0x95, 0x75, 0x0d, 0x76, 0xed, 0x81, 0x0b, 0xf9, 0x3b, 0x81, 0xd1, 0xf7, 0x73,
+	0xad, 0xd1, 0xb1, 0x45, 0x7a, 0x02, 0xfe, 0x5c, 0xa7, 0xb1, 0x2b, 0x86, 0xfa, 0x62, 0x0d, 0xe8,
+	0x04, 0x8e, 0xab, 0x89, 0x58, 0xd6, 0x0a, 0xbc, 0xe6, 0x04, 0xeb, 0x7c, 0x7e, 0x05, 0x83, 0x7d,
+	0x12, 0x7e, 0xe6, 0x89, 0xbf, 0xc2, 0xb0, 0xa1, 0xfb, 0xf7, 0x95, 0x7f, 0x12, 0xe8, 0x55, 0x79,
+	0x9b, 0x90, 0xc9, 0xee, 0xaa, 0x14, 0xda, 0xb9, 0xde, 0x32, 0xf7, 0xa2, 0x6e, 0xbe, 0x34, 0xed,
+	0x43, 0x27, 0x92, 0xb1, 0x5a, 0xa2, 0x75, 0xac, 0x5d, 0x74, 0x6c, 0x71, 0xfe, 0x4f, 0xd9, 0x69,
+	0xbe, 0xdb, 0x31, 0x3f, 0x20, 0x61, 0x47, 0x6c, 0xf1, 0xe3, 0xbf, 0xe2, 0x89, 0x5e, 0x7e, 0x05,
+	0x00, 0x00, 0xff, 0xff, 0x7d, 0x80, 0xa3, 0x6b, 0xbd, 0x03, 0x00, 0x00,
 }
--- a/api/workflow_template.proto
+++ b/api/workflow_template.proto
@@ -7,6 +7,11 @@ message CreateWorkflowTemplateRequest {
    WorkflowTemplate workflowTemplate = 2;
 }

+message UpdateWorkflowTemplateVersionRequest {
+    string namespace = 1;
+    WorkflowTemplate workflowTemplate = 2;
+}
+
 message GetWorkflowTemplateRequest {
    string namespace = 1;
    string uid = 2;
@@ -37,4 +42,5 @@ message WorkflowTemplate {
    string name = 2;
    int32 version = 3;
    string manifest = 4;
+    bool isLatest = 5;
 }
--- a/go.mod
+++ b/go.mod
@@ -12,6 +12,7 @@ require (
 	github.com/elazarl/goproxy v0.0.0-20191011121108-aa519ddbe484 // indirect
 	github.com/evanphx/json-patch v4.5.0+incompatible // indirect
 	github.com/go-openapi/spec v0.19.4 // indirect
+	github.com/go-sql-driver/mysql v1.5.0 // indirect
 	github.com/gogo/protobuf v1.3.1 // indirect
 	github.com/golang/protobuf v1.3.2
 	github.com/google/uuid v1.1.1
@@ -23,17 +24,20 @@ require (
 	github.com/imdario/mergo v0.3.8 // indirect
 	github.com/jmoiron/sqlx v1.2.0
 	github.com/json-iterator/go v1.1.8 // indirect
-	github.com/lib/pq v1.0.0
+	github.com/lib/pq v1.3.0
+	github.com/mattn/go-sqlite3 v2.0.2+incompatible // indirect
 	github.com/modern-go/reflect2 v1.0.1 // indirect
-	github.com/pkg/errors v0.8.1 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pressly/goose v2.6.0+incompatible
 	github.com/sirupsen/logrus v1.4.2 // indirect
 	github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5
 	github.com/valyala/fasttemplate v1.1.0 // indirect
+	github.com/ziutek/mymysql v1.5.4 // indirect
 	golang.org/x/crypto v0.0.0-20191128160524-b544559bb6d1 // indirect
 	golang.org/x/net v0.0.0-20191126235420-ef20fe5d7933 // indirect
 	golang.org/x/oauth2 v0.0.0-20191122200657-5d9234df094c // indirect
 	golang.org/x/time v0.0.0-20191024005414-555d28b269f0 // indirect
+	google.golang.org/appengine v1.6.5 // indirect
 	google.golang.org/genproto v0.0.0-20191206224255-0243a4be9c8f
 	google.golang.org/grpc v1.25.1
 	gopkg.in/inf.v0 v0.9.1 // indirect
--- a/go.sum
+++ b/go.sum
@@ -74,6 +74,8 @@ github.com/go-openapi/swag v0.19.5 h1:lTz6Ys4CmqqCQmZPBlbQENR1/GucA2bzYTE12Pw4tF
 github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
 github.com/go-sql-driver/mysql v1.4.0 h1:7LxgVwFb2hIQtMm87NdgAVfXjnt4OePseqT1tKx+opk=
 github.com/go-sql-driver/mysql v1.4.0/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w=
+github.com/go-sql-driver/mysql v1.5.0 h1:ozyZYNQW3x3HtqT1jira07DN2PArx2v7/mN66gGcHOs=
+github.com/go-sql-driver/mysql v1.5.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/gogo/protobuf v1.3.1 h1:DqDEcV5aeaTmdFBePNpYsp3FlcVH/2ISVVM9Qf8PSls=
 github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
@@ -81,6 +83,7 @@ github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfU
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v0.0.0-20161109072736-4bd1920723d7/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
@@ -123,12 +126,16 @@ github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0 h1:P6pPBnrTSX3DEVR4fDembhR
 github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0/go.mod h1:vmVJ0l/dxyfGW6FmdpVm2joNMFikkuWg0EoCKLGUMNw=
 github.com/lib/pq v1.0.0 h1:X5PMW56eZitiTeO7tKzZxFCSpbFZJtkMMooicw2us9A=
 github.com/lib/pq v1.0.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
+github.com/lib/pq v1.3.0 h1:/qkRGz8zljWiDcFvgpwUpwIAPu3r07TDvs3Rws+o/pU=
+github.com/lib/pq v1.3.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/mailru/easyjson v0.0.0-20160728113105-d5b7844b561a/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e h1:hB2xlXdHp/pmPZq0y3QnmWAArdw9PqbmotexnWx/FU8=
 github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mattn/go-sqlite3 v1.9.0 h1:pDRiWfl+++eC2FEFRy6jXmQlvp4Yh3z1MJKg4UeYM/4=
 github.com/mattn/go-sqlite3 v1.9.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
+github.com/mattn/go-sqlite3 v2.0.2+incompatible h1:qzw9c2GNT8UFrgWNDhCTqRqYUSmu/Dav/9Z58LGpk7U=
+github.com/mattn/go-sqlite3 v2.0.2+incompatible/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
@@ -143,6 +150,8 @@ github.com/onsi/gomega v0.0.0-20170829124025-dcabb60a477c h1:eSfnfIuwhxZyULg1NNu
 github.com/onsi/gomega v0.0.0-20170829124025-dcabb60a477c/go.mod h1:C1qb7wdrVGGVU+Z6iS04AVkA3Q65CEZX59MT0QO5uiA=
 github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v0.0.0-20151028094244-d8ed2627bdf0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
@@ -170,6 +179,8 @@ github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6Kllzaw
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
 github.com/valyala/fasttemplate v1.1.0 h1:RZqt0yGBsps8NGvLSGW804QQqCUYYLsaOjTVHy1Ocw4=
 github.com/valyala/fasttemplate v1.1.0/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
+github.com/ziutek/mymysql v1.5.4 h1:GB0qdRGsTwQSBVYuVShFBKaXSnSnYYC2d9knnE1LHFs=
+github.com/ziutek/mymysql v1.5.4/go.mod h1:LMSpPZ6DbqWFxNCHW77HeMg9I646SAhApZ/wKdgO/C0=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191128160524-b544559bb6d1 h1:anGSYQpPhQwXlwsu5wmfq0nWkCNaMEMUwAv13Y92hd8=
@@ -185,6 +196,7 @@ golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73r
 golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191002035440-2ec189313ef0/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@@ -221,6 +233,7 @@ golang.org/x/tools v0.0.0-20190614205625-5aca471b1d59/go.mod h1:/rFqwRUd4F7ZHNgw
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 h1:gSJIx1SDwno+2ElGhA4+qG2zF97qiUzTM+rQ0klBOcE=
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
--- a/manager/workflow_manager.go
+++ b/manager/workflow_manager.go
@@ -196,10 +196,39 @@ func (r *ResourceManager) CreateWorkflowTemplateVersion(namespace string, workfl
 		return nil, util.NewUserError(codes.InvalidArgument, err.Error())
 	}

+	if err := r.workflowRepository.RemoveIsLatestFromWorkflowTemplateVersions(workflowTemplate); err != nil {
+		return nil, err
+	}
+
 	workflowTemplate, err := r.workflowRepository.CreateWorkflowTemplateVersion(namespace, workflowTemplate)
 	if err != nil {
 		return nil, util.NewUserErrorWrap(err, "Workflow template")
 	}
+
+	if err == nil && workflowTemplate == nil {
+		return nil, util.NewUserError(codes.NotFound, "Workflow template not found.")
+	}
+
+	return workflowTemplate, nil
+}
+
+func (r *ResourceManager) UpdateWorkflowTemplateVersion(namespace string, workflowTemplate *model.WorkflowTemplate) (*model.WorkflowTemplate, error) {
+	// validate workflow template
+	if err := r.kubeClient.ValidateWorkflow(workflowTemplate.GetManifestBytes()); err != nil {
+		return nil, util.NewUserError(codes.InvalidArgument, err.Error())
+	}
+
+	originalWorkflowTemplate, err := r.workflowRepository.GetWorkflowTemplate(namespace, workflowTemplate.UID, workflowTemplate.Version)
+	if err != nil {
+		return nil, err
+	}
+
+	workflowTemplate.ID = originalWorkflowTemplate.ID
+	workflowTemplate, err = r.workflowRepository.UpdateWorkflowTemplateVersion(workflowTemplate)
+	if err != nil {
+		return nil, util.NewUserErrorWrap(err, "Workflow template")
+	}
+
 	if err == nil && workflowTemplate == nil {
 		return nil, util.NewUserError(codes.NotFound, "Workflow template not found.")
 	}
--- a/model/workflow_template.go
+++ b/model/workflow_template.go
@@ -10,6 +10,7 @@ type WorkflowTemplate struct {
 	Name     string
 	Manifest string
 	Version  int32
+	IsLatest bool `db:"is_latest"`
 }

 func (wt *WorkflowTemplate) GetManifestBytes() []byte {
--- a/repository/workflow_repository.go
+++ b/repository/workflow_repository.go
@@ -23,6 +23,7 @@ func (r *WorkflowRepository) insertWorkflowTemplateVersion(workflowTemplate *mod
 			"workflow_template_id": workflowTemplate.ID,
 			"manifest":             workflowTemplate.Manifest,
 			"version":              int32(time.Now().Unix()),
+			"is_latest":            workflowTemplate.IsLatest,
 		}).
 		Suffix("RETURNING version").
 		RunWith(runner).
@@ -67,6 +68,25 @@ func (r *WorkflowRepository) CreateWorkflowTemplate(namespace string, workflowTe
 	return workflowTemplate, nil
 }

+func (r *WorkflowRepository) RemoveIsLatestFromWorkflowTemplateVersions(workflowTemplate *model.WorkflowTemplate) error {
+	query, args, err := r.sb.Update("workflow_template_versions").
+		Set("is_latest", true).
+		Where(sq.Eq{
+			"workflow_template_id": workflowTemplate.ID,
+			"is_latest":            false,
+		}).
+		ToSql()
+	if err != nil {
+		return err
+	}
+
+	if _, err := r.db.Exec(query, args...); err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func (r *WorkflowRepository) CreateWorkflowTemplateVersion(namespace string, workflowTemplate *model.WorkflowTemplate) (*model.WorkflowTemplate, error) {
 	query, args, err := r.sb.Select("id, name").
 		From("workflow_templates").
@@ -90,8 +110,28 @@ func (r *WorkflowRepository) CreateWorkflowTemplateVersion(namespace string, wor
 	return workflowTemplate, nil
 }

+func (r *WorkflowRepository) UpdateWorkflowTemplateVersion(workflowTemplate *model.WorkflowTemplate) (*model.WorkflowTemplate, error) {
+	query, args, err := r.sb.Update("workflow_template_versions").
+		Set("manifest", workflowTemplate.Manifest).
+		Where(sq.Eq{
+			"workflow_template_id": workflowTemplate.ID,
+			"version":              workflowTemplate.Version,
+		}).
+		ToSql()
+
+	if err != nil {
+		return nil, err
+	}
+
+	if _, err := r.db.Exec(query, args...); err != nil {
+		return nil, err
+	}
+
+	return workflowTemplate, nil
+}
+
 func (r *WorkflowRepository) workflowTemplatesSelectBuilder(namespace string) sq.SelectBuilder {
-	sb := r.sb.Select("wt.uid", "wt.name", "wtv.version").
+	sb := r.sb.Select("wt.id", "wt.uid", "wt.name", "wtv.version", "wtv.is_latest").
 		From("workflow_template_versions wtv").
 		Join("workflow_templates wt ON wt.id = wtv.workflow_template_id").
 		Where(sq.Eq{
--- a/server/workflow_server.go
+++ b/server/workflow_server.go
@@ -32,6 +32,7 @@ func apiWorkflow(wf *model.Workflow) (workflow *api.Workflow) {
 			Name:     wf.WorkflowTemplate.Name,
 			Version:  wf.WorkflowTemplate.Version,
 			Manifest: wf.WorkflowTemplate.Manifest,
+			IsLatest: wf.WorkflowTemplate.IsLatest,
 		}
 	}

@@ -44,6 +45,7 @@ func apiWorkflowTemplate(wft *model.WorkflowTemplate) *api.WorkflowTemplate {
 		Name:     wft.Name,
 		Version:  wft.Version,
 		Manifest: wft.Manifest,
+		IsLatest: wft.IsLatest,
 	}
 }

@@ -177,6 +179,25 @@ func (s *WorkflowServer) CreateWorkflowTemplateVersion(ctx context.Context, req
 	return req.WorkflowTemplate, nil
 }

+func (s *WorkflowServer) UpdateWorkflowTemplateVersion(ctx context.Context, req *api.UpdateWorkflowTemplateVersionRequest) (*api.WorkflowTemplate, error) {
+	workflowTemplate := &model.WorkflowTemplate{
+		UID:      req.WorkflowTemplate.Uid,
+		Name:     req.WorkflowTemplate.Name,
+		Manifest: req.WorkflowTemplate.Manifest,
+		Version:  req.WorkflowTemplate.Version,
+	}
+
+	workflowTemplate, err := s.resourceManager.UpdateWorkflowTemplateVersion(req.Namespace, workflowTemplate)
+	if errors.As(err, &userError) {
+		return nil, userError.GRPCError()
+	}
+	req.WorkflowTemplate.Uid = workflowTemplate.UID
+	req.WorkflowTemplate.Name = workflowTemplate.Name
+	req.WorkflowTemplate.Version = workflowTemplate.Version
+
+	return req.WorkflowTemplate, nil
+}
+
 func (s *WorkflowServer) GetWorkflowTemplate(ctx context.Context, req *api.GetWorkflowTemplateRequest) (*api.WorkflowTemplate, error) {
 	workflowTemplate, err := s.resourceManager.GetWorkflowTemplate(req.Namespace, req.Uid, req.Version)
 	if errors.As(err, &userError) {