Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/internal/pkg/commands/handler.go b/internal/pkg/commands/handler.go
new file mode 100644
index 0000000..3c4b0ff
--- /dev/null
+++ b/internal/pkg/commands/handler.go
@@ -0,0 +1,72 @@
+/*
+ * 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 (
+ "github.com/golang/protobuf/proto"
+ "github.com/jhump/protoreflect/desc"
+ "github.com/jhump/protoreflect/dynamic"
+ "google.golang.org/grpc/metadata"
+ "google.golang.org/grpc/status"
+ "io"
+)
+
+type RpcEventHandler struct {
+ Response proto.Message
+ Status *status.Status
+ Data []byte
+ Fields map[string]map[string]interface{}
+}
+
+func (h *RpcEventHandler) OnResolveMethod(*desc.MethodDescriptor) {
+}
+
+func (h *RpcEventHandler) OnSendHeaders(metadata.MD) {
+}
+
+func (h *RpcEventHandler) OnReceiveHeaders(metadata.MD) {
+}
+
+func (h *RpcEventHandler) OnReceiveResponse(m proto.Message) {
+ h.Response = m
+}
+
+func (h *RpcEventHandler) OnReceiveTrailers(s *status.Status, m metadata.MD) {
+ h.Status = s
+}
+
+func (h *RpcEventHandler) GetParams(msg proto.Message) error {
+ dmsg, err := dynamic.AsDynamicMessage(msg)
+ if err != nil {
+ return err
+ }
+
+ if h.Fields == nil || len(h.Fields) == 0 {
+ return io.EOF
+ }
+
+ fields, ok := h.Fields[dmsg.XXX_MessageName()]
+ if !ok {
+ return nil
+ }
+
+ for k, v := range fields {
+ dmsg.TrySetFieldByName(k, v)
+ }
+ delete(h.Fields, dmsg.XXX_MessageName())
+
+ return nil
+}