1 files changed, 46 insertions, 0 deletions
diff --git a/vpp-classifier/impl/src/main/java/io/fd/hc2vpp/vpp/classifier/read/VppNodeReader.java b/vpp-classifier/impl/src/main/java/io/fd/hc2vpp/vpp/classifier/read/VppNodeReader.java
new file mode 100644
index 000000000..8fe4786bc
--- /dev/null
+++ b/vpp-classifier/impl/src/main/java/io/fd/hc2vpp/vpp/classifier/read/VppNodeReader.java
@@ -0,0 +1,46 @@
+/*
+ * 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.vpp.classifier.read;
+
+import com.google.common.base.Optional;
+import io.fd.hc2vpp.vpp.classifier.context.VppClassifierContextManager;
+import io.fd.honeycomb.translate.MappingContext;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev161214.PacketHandlingAction;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev161214.VppNode;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.vpp.classifier.rev161214.VppNodeName;
+import org.slf4j.Logger;
+
+interface VppNodeReader {
+
+    /**
+     * Converts vpp node index to YANG representation of vpp node.
+     *
+     * @param nodeIndex index of vpp node treated as signed integer.
+     * @return vpp node representation
+     */
+    default Optional<VppNode> readVppNode(final int tableIndex, final int nodeIndex,
+                                          @Nonnull final VppClassifierContextManager vppClassifierContextManager,
+                                          @Nonnull final MappingContext ctx, @Nonnull final Logger log) {
+        final PacketHandlingAction action = PacketHandlingAction.forValue(nodeIndex);
+        if (action == null) {
+            return vppClassifierContextManager.getNodeName(tableIndex, nodeIndex, ctx)
+                .transform(nodeName -> new VppNode(new VppNodeName(nodeName)));
+        }
+        return Optional.of(new VppNode(action));
+    }
+}