VOL-3818: Initial version of OLT Topology discovery app; used to find active links between OLT NNI and Leaf switch ports.
Change-Id: I058b603d028446e8176821d85a25af8963e28924
diff --git a/app/src/main/java/org/opencord/olttopology/impl/OltTopologyInformationCodec.java b/app/src/main/java/org/opencord/olttopology/impl/OltTopologyInformationCodec.java
new file mode 100644
index 0000000..bd45bed
--- /dev/null
+++ b/app/src/main/java/org/opencord/olttopology/impl/OltTopologyInformationCodec.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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 org.opencord.olttopology.impl;
+
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.onlab.packet.LLDPTLV;
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.JsonCodec;
+import org.opencord.olttopology.OltNeighborInfo;
+
+import java.util.Date;
+import java.util.List;
+
+/*
+Codec for JSON encoding of OLT topology information.
+ */
+public class OltTopologyInformationCodec extends JsonCodec<OltNeighborInfo> {
+ /**
+ * Encoder for the information in Json format.
+ *
+ * @param en : The topology information to be encoded
+ * @param context : The context to which the Json data needs to be added
+ * @return Json Object Node
+ */
+ @Override
+ public ObjectNode encode(OltNeighborInfo en, CodecContext context) {
+ final ObjectNode result = context.mapper().createObjectNode()
+ .put("oltName", (en.oltName() == null) ? "" : en.oltName())
+ .put("oltPort", (en.oltPort().annotations().value("portName").isEmpty()) ? "" :
+ en.oltPort().annotations().value("portName"))
+ .put("oltSerialNo", (en.oltSerialNo() == null) ? "" : en.oltSerialNo())
+ .put("neighborName", (en.neighborName() == null) ? "" : en.neighborName())
+ .put("neighborPort", (en.neighborPort() == null) ? "" : en.neighborPort())
+ .put("neighborManagementAddress", (en.mgmtAddr() == null) ? "" : en.mgmtAddr());
+
+ if (en.getOtherOptionalTlvs() != null) {
+ ArrayNode optionalTlvNodes = result.putArray("optionalTlvs");
+
+ List<LLDPTLV> optionalTlvsList = en.getOtherOptionalTlvs();
+ for (LLDPTLV tlv : optionalTlvsList) {
+ ObjectNode optionalTlvNode = context.mapper().createObjectNode();
+ optionalTlvNode.put("type", tlv.getType());
+ optionalTlvNode.put("value", "0x" + byteArrayInHex(tlv.getValue()));
+ optionalTlvNodes.add(optionalTlvNode);
+ }
+ }
+
+ Date currentTime = new Date();
+ long lastUpdatedValue = currentTime.getTime() - en.getLastUpdated().getTime();
+ long lastUpdatedSecondsValue = lastUpdatedValue / 1000;
+ result.put("last_updated", Long.toString(lastUpdatedSecondsValue));
+ return result;
+ }
+
+ /**
+ * Utility function to convert byte array to Hex String.
+ *
+ * @param bytes : The byte arrary to be converted
+ * @return Hex string representation of the byte array
+ */
+ private String byteArrayInHex(byte[] bytes) {
+ String s = "";
+ for (byte b : bytes) {
+ s += String.format("%02x", b);
+ }
+ return s;
+ }
+}