diff --git a/commands/funcmap.go b/commands/funcmap.go
new file mode 100644
index 0000000..0342653
--- /dev/null
+++ b/commands/funcmap.go
@@ -0,0 +1,75 @@
+/*
+ * Portions copyright 2019-present Open Networking Foundation
+ * Original copyright 2019-present Ciena Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package commands
+
+import (
+	"fmt"
+	"github.com/fullstorydev/grpcurl"
+	"github.com/jhump/protoreflect/dynamic"
+	"github.com/jhump/protoreflect/grpcreflect"
+	"golang.org/x/net/context"
+	"google.golang.org/grpc"
+	reflectpb "google.golang.org/grpc/reflection/grpc_reflection_v1alpha"
+)
+
+type MethodNotFoundError struct {
+	Name string
+}
+
+func (e *MethodNotFoundError) Error() string {
+	return fmt.Sprintf("Method '%s' not found in function map", e.Name)
+}
+
+type MethodVersionNotFoundError struct {
+	Name    string
+	Version string
+}
+
+func (e *MethodVersionNotFoundError) Error() string {
+	return fmt.Sprintf("Method '%s' does not have a verison for '%s' specfied in function map", e.Name, e.Version)
+}
+
+type DescriptorNotFoundError struct {
+	Version string
+}
+
+func (e *DescriptorNotFoundError) Error() string {
+	return fmt.Sprintf("Protocol buffer descriptor for API version '%s' not found", e.Version)
+}
+
+type UnableToParseDescriptorErrror struct {
+	err     error
+	Version string
+}
+
+func (e *UnableToParseDescriptorErrror) Error() string {
+	return fmt.Sprintf("Unable to parse protocal buffer descriptor for version '%s': %s", e.Version, e.err)
+}
+
+func GetReflectionMethod(conn *grpc.ClientConn, name string) (grpcurl.DescriptorSource, string, error) {
+	refClient := grpcreflect.NewClient(context.Background(), reflectpb.NewServerReflectionClient(conn))
+	defer refClient.Reset()
+
+	desc := grpcurl.DescriptorSourceFromServer(context.Background(), refClient)
+
+	return desc, name, nil
+}
+
+func GetEnumValue(val *dynamic.Message, name string) string {
+	return val.FindFieldDescriptorByName(name).GetEnumType().
+		FindValueByNumber(val.GetFieldByName(name).(int32)).GetName()
+}