1 files changed, 74 insertions, 0 deletions
diff --git a/adapter/mock/util/binapi_reflect.go b/adapter/mock/util/binapi_reflect.go
new file mode 100644
index 0000000..0ab065d
--- /dev/null
+++ b/adapter/mock/util/binapi_reflect.go
@@ -0,0 +1,74 @@
+// Copyright (c) 2017 Cisco and/or its affiliates.
+//
+// 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 util is a helper package for generic handling of VPP binary
+// API messages in the mock adapter and integration tests.
+package util
+
+import (
+	"reflect"
+)
+
+const swIfIndexName = "swIfIndex"
+const retvalName = "retval"
+const replySuffix = "_reply"
+
+// findFieldOfType finds the field specified by its name in provided message defined as reflect.Type data type.
+func findFieldOfType(reply reflect.Type, fieldName string) (reflect.StructField, bool) {
+	if reply.Kind() == reflect.Struct {
+		field, found := reply.FieldByName(fieldName)
+		return field, found
+	} else if reply.Kind() == reflect.Ptr && reply.Elem().Kind() == reflect.Struct {
+		field, found := reply.Elem().FieldByName(fieldName)
+		return field, found
+	}
+	return reflect.StructField{}, false
+}
+
+// findFieldOfValue finds the field specified by its name in provided message defined as reflect.Value data type.
+func findFieldOfValue(reply reflect.Value, fieldName string) (reflect.Value, bool) {
+	if reply.Kind() == reflect.Struct {
+		field := reply.FieldByName(fieldName)
+		return field, field.IsValid()
+	} else if reply.Kind() == reflect.Ptr && reply.Elem().Kind() == reflect.Struct {
+		field := reply.Elem().FieldByName(fieldName)
+		return field, field.IsValid()
+	}
+	return reflect.Value{}, false
+}
+
+// HasSwIfIdx checks whether provided message has the swIfIndex field.
+func HasSwIfIdx(msg reflect.Type) bool {
+	_, found := findFieldOfType(msg, swIfIndexName)
+	return found
+}
+
+// SetSwIfIdx sets the swIfIndex field of provided message to provided value.
+func SetSwIfIdx(msg reflect.Value, swIfIndex uint32) {
+	if field, found := findFieldOfValue(msg, swIfIndexName); found {
+		field.Set(reflect.ValueOf(swIfIndex))
+	}
+}
+
+// SetRetval sets the retval field of provided message to provided value.
+func SetRetval(msg reflect.Value, retVal int32) {
+	if field, found := findFieldOfValue(msg, retvalName); found {
+		field.Set(reflect.ValueOf(retVal))
+	}
+}
+
+// ReplyNameFor returns reply message name to the given request message name.
+func ReplyNameFor(requestName string) (string, bool) {
+	return requestName + replySuffix, true
+}