HC2VPP-115 - lisp state check before write/read

 - checks lisp state before read,disabled state will
 result in returning empty data
 - checks lisp state before write,disabled state will
 result in throwing IllegalStateException
 - fixes ordering issues for lisp gpe interfaces

Change-Id: I6dcfc6c7f514aad57841f2aac1b2ee0c6b868c3c
Signed-off-by: Jan Srnicek <jsrnicek@cisco.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/lisp/lisp2vpp/src/main/java/io/fd/hc2vpp/lisp/translate/service/LispStateCheckService.java b/lisp/lisp2vpp/src/main/java/io/fd/hc2vpp/lisp/translate/service/LispStateCheckService.java
new file mode 100644
index 000000000..ab0ea797c
--- /dev/null
+++ b/lisp/lisp2vpp/src/main/java/io/fd/hc2vpp/lisp/translate/service/LispStateCheckService.java
@@ -0,0 +1,37 @@
+/*
+ * 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 io.fd.hc2vpp.lisp.translate.service;
+
+import io.fd.honeycomb.translate.read.ReadContext;
+import io.fd.honeycomb.translate.write.WriteContext;
+import javax.annotation.Nonnull;
+
+/**
+ * Provides functionality to check whether lisp is enabled
+ */
+public interface LispStateCheckService {
+
+    /**
+     * Checks whether lisp is enabled while operating inside {@link WriteContext}
+     */
+    void checkLispEnabled(@Nonnull final WriteContext ctx);
+
+    /**
+     * Checks whether lisp is enabled while operating inside {@link ReadContext}
+     */
+    boolean lispEnabled(@Nonnull final ReadContext ctx);
+}