ONOS-4086 to ONOS-4091, ONOS-4098 to ONOS-4100:ISIS controller implementation

Change-Id: I7be52805652fe762baf808515401d6b5042b2aa5
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/pdu/LsPdu.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/pdu/LsPdu.java
index 11de4f4..f6bd85c 100644
--- a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/pdu/LsPdu.java
+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/pdu/LsPdu.java
@@ -280,7 +280,7 @@
      * Returns the packet data unit length of link state packet.
      * Entire length of this PDU, in octets
      *
-     * @return pduLength packte date unit length
+     * @return pduLength packet data unit length
      */
     public int pduLength() {
         return pduLength;
@@ -290,7 +290,7 @@
      * Sets the packet data unit length for link state packet.
      * Entire Length of this PDU, in octets
      *
-     * @param pduLength packte data length
+     * @param pduLength packet data length
      */
     public void setPduLength(int pduLength) {
         this.pduLength = pduLength;
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/IpExtendedReachabilityTlv.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/IpExtendedReachabilityTlv.java
index 14962d8..f1549e4 100644
--- a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/IpExtendedReachabilityTlv.java
+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/IpExtendedReachabilityTlv.java
@@ -220,10 +220,9 @@
         byte[] bytes = null;
         byte[] tlvHeader = tlvHeaderAsByteArray();
         byte[] tlvBody = tlvBodyAsBytes();
-        //systemID + pseudo number+length of subtlv=11l
-        tlvBody[10] = (byte) (tlvBody.length - 11);
         tlvHeader[1] = (byte) tlvBody.length;
         bytes = Bytes.concat(tlvHeader, tlvBody);
+
         return bytes;
     }
 
@@ -246,8 +245,8 @@
         } else {
             controlInfo = controlInfo + "0";
         }
-        String prefixlength = IsisUtil.toEightBitBinary(Integer.toBinaryString(this.prefixLength()));
-        controlInfo = controlInfo + prefixlength.substring(2, prefixlength.length());
+        String prefixLength = IsisUtil.toEightBitBinary(Integer.toBinaryString(this.prefixLength()));
+        controlInfo = controlInfo + prefixLength.substring(2, prefixLength.length());
         bodyLst.add(Byte.parseByte(controlInfo, 2));
         if (this.isSubTlvPresence()) {
             bodyLst.add(this.subTlvLength());
@@ -255,6 +254,8 @@
                 bodyLst.addAll(SubTlvToBytes.tlvToBytes(trafficEngineeringSubTlv));
             }
         }
+        bodyLst.addAll(Bytes.asList(IsisUtil.prefixToBytes(this.prefix())));
+
         return Bytes.toArray(bodyLst);
     }
 
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/IsExtendedReachability.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/IsExtendedReachability.java
new file mode 100644
index 0000000..c6cd9f0
--- /dev/null
+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/IsExtendedReachability.java
@@ -0,0 +1,151 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.onosproject.isis.io.isispacket.tlv;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.primitives.Bytes;
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.onosproject.isis.io.isispacket.tlv.subtlv.SubTlvFinder;
+import org.onosproject.isis.io.isispacket.tlv.subtlv.SubTlvToBytes;
+import org.onosproject.isis.io.isispacket.tlv.subtlv.SubTlvType;
+import org.onosproject.isis.io.isispacket.tlv.subtlv.TrafficEngineeringSubTlv;
+import org.onosproject.isis.io.util.IsisUtil;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Representation of IS extended reachability TLV.
+ */
+public class IsExtendedReachability extends TlvHeader implements IsisTlv {
+
+    private String neighborId;
+    private int metric;
+    private List<TrafficEngineeringSubTlv> trafEnginSubTlv = new ArrayList<>();
+
+    /**
+     * Creates an instance of IP external reachability TLV.
+     *
+     * @param tlvHeader TLV header
+     */
+    public IsExtendedReachability(TlvHeader tlvHeader) {
+        this.setTlvType(tlvHeader.tlvType());
+        this.setTlvLength(tlvHeader.tlvLength());
+    }
+
+    /**
+     * Returns neighbor ID.
+     *
+     * @return neighbor ID
+     */
+    public String neighborId() {
+        return neighborId;
+    }
+
+    /**
+     * Sets neighbor ID.
+     *
+     * @param neighborId neighbor ID
+     */
+    public void setNeighborId(String neighborId) {
+        this.neighborId = neighborId;
+    }
+
+    /**
+     * Returns metric.
+     *
+     * @return metric
+     */
+    public int metric() {
+        return metric;
+    }
+
+    /**
+     * Sets metric.
+     *
+     * @param metric metric
+     */
+    public void setMetric(int metric) {
+        this.metric = metric;
+    }
+
+    /**
+     * Adds the traffic engineering sub TLV to IS extended reachability TLV.
+     *
+     * @param trafEnginSubTlv traffic engineering sub TLV
+     */
+    public void addSubTlv(TrafficEngineeringSubTlv trafEnginSubTlv) {
+        this.trafEnginSubTlv.add(trafEnginSubTlv);
+    }
+
+    @Override
+    public void readFrom(ChannelBuffer channelBuffer) {
+        byte[] tempByteArray = new byte[IsisUtil.ID_SIX_BYTES];
+        channelBuffer.readBytes(tempByteArray, 0, IsisUtil.ID_SIX_BYTES);
+        this.setNeighborId(IsisUtil.systemId(tempByteArray));
+        this.setMetric(channelBuffer.readUnsignedMedium());
+        while (channelBuffer.readableBytes() > 0) {
+            TlvHeader tlvHeader = new TlvHeader();
+            tlvHeader.setTlvType(channelBuffer.readByte());
+            tlvHeader.setTlvLength(channelBuffer.readByte());
+            SubTlvType tlvValue = SubTlvType.get(tlvHeader.tlvType());
+            if (tlvValue != null) {
+                this.addSubTlv(SubTlvFinder.findSubTlv(tlvHeader,
+                                                       channelBuffer.readBytes(tlvHeader.tlvLength())));
+            } else {
+                channelBuffer.readBytes(tlvHeader.tlvLength());
+            }
+        }
+    }
+
+    @Override
+    public byte[] asBytes() {
+        byte[] bytes = null;
+        byte[] tlvHeader = tlvHeaderAsByteArray();
+        byte[] tlvBody = tlvBodyAsBytes();
+        tlvHeader[1] = (byte) tlvBody.length;
+        bytes = Bytes.concat(tlvHeader, tlvBody);
+        return bytes;
+    }
+
+    /**
+     * Returns TLV body of IS extended reachability TLV.
+     *
+     * @return byteArray TLV body of IS extended reachability TLV.
+     */
+    private byte[] tlvBodyAsBytes() {
+        List<Byte> byteList = new ArrayList<>();
+        byteList.addAll(IsisUtil.sourceAndLanIdToBytes(this.neighborId()));
+        byteList.addAll(Bytes.asList(IsisUtil.convertToThreeBytes(this.metric())));
+        if (this.trafEnginSubTlv.size() > 0) {
+            for (TrafficEngineeringSubTlv trafficEngineeringSubTlv : this.trafEnginSubTlv) {
+                byteList.addAll(SubTlvToBytes.tlvToBytes(trafficEngineeringSubTlv));
+            }
+        }
+        return Bytes.toArray(byteList);
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .omitNullValues()
+                .add("neighborId", neighborId)
+                .add("metric", metric)
+                .add("trafEnginSubTlv", trafEnginSubTlv)
+                .toString();
+    }
+
+}
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/MetricOfInternalReachability.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/MetricOfInternalReachability.java
index 179b3e6..4ad4871 100644
--- a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/MetricOfInternalReachability.java
+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/MetricOfInternalReachability.java
@@ -358,10 +358,7 @@
         } else {
             this.setErrorMetricSupported(false);
         }
-        List<Byte> byteList = new ArrayList<>();
-        while (channelBuffer.readableBytes() > 0) {
-            byteList.add(channelBuffer.readByte());
-        }
+
         byte[] tempByteArray = new byte[IsisUtil.FOUR_BYTES];
         channelBuffer.readBytes(tempByteArray, 0, IsisUtil.FOUR_BYTES);
         this.setIpAddress(Ip4Address.valueOf(tempByteArray));
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/TlvFinder.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/TlvFinder.java
index d6bb909..5e31c17 100644
--- a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/TlvFinder.java
+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/TlvFinder.java
@@ -42,7 +42,10 @@
                 //TODO
                 break;
             case EXTENDEDISREACHABILITY:
-                //TODO
+                IsExtendedReachability isExtendedReachability =
+                        new IsExtendedReachability(tlvHeader);
+                isExtendedReachability.readFrom(channelBuffer);
+                isisTlv = isExtendedReachability;
                 break;
             case HOSTNAME:
                 HostNameTlv hostNameTlv = new HostNameTlv(tlvHeader);
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/TlvsToBytes.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/TlvsToBytes.java
index e3eba57..7978385 100644
--- a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/TlvsToBytes.java
+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/isispacket/tlv/TlvsToBytes.java
@@ -82,6 +82,10 @@
             LspEntriesTlv lspEntriesTlv
                     = (LspEntriesTlv) isisTlv;
             tlvBytes.addAll(Bytes.asList(lspEntriesTlv.asBytes()));
+        } else if (isisTlv instanceof IsExtendedReachability) {
+            IsExtendedReachability isExtendedReachability
+                    = (IsExtendedReachability) isisTlv;
+            tlvBytes.addAll(Bytes.asList(isExtendedReachability.asBytes()));
         } else {
             log.debug("TlvsToBytes::UNKNOWN TLV TYPE ::TlvsToBytes ");
         }
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/IsisConfig.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/IsisConfig.java
deleted file mode 100644
index 9b37cbd..0000000
--- a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/IsisConfig.java
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright 2016-present Open Networking Laboratory
- *
- * 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.onosproject.isis.io.util;
-
-import com.fasterxml.jackson.databind.JsonNode;
-
-/**
- * Representation of ISIS config.
- */
-public enum IsisConfig {
-    INSTANCE;
-    private JsonNode jsonNodes = null;
-
-    /**
-     * Returns the config value.
-     *
-     * @return jsonNodes json node
-     */
-    public JsonNode config() {
-        return jsonNodes;
-    }
-
-    /**
-     * Sets the config value for jsonNode.
-     *
-     * @param jsonNodes json node
-     */
-    public void setConfig(JsonNode jsonNodes) {
-        this.jsonNodes = jsonNodes;
-    }
-}
\ No newline at end of file
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/IsisConstants.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/IsisConstants.java
index fe84218..cf5871a 100644
--- a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/IsisConstants.java
+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/IsisConstants.java
@@ -16,21 +16,25 @@
 
 package org.onosproject.isis.io.util;
 
+import org.onlab.packet.Ip4Address;
+
 /**
  * Representation of ISIS Constants.
  */
 public final class IsisConstants {
-    public static final char PDU_LENGTH = 1497; // mtu (1500) - (3) LLC
+    public static final char PDU_LENGTH = 1497;
+    public static final char CONFIG_LENGTH = 1498;
     public static final int MINIMUM_FRAME_LEN = 1521;
     public static final int METADATA_LEN = 7;
     public static final String SHOST = "127.0.0.1";
+    public static final Ip4Address DEFAULTIP = Ip4Address.valueOf("0.0.0.0");
     public static final int SPORT = 3000;
     public static final byte L2 = 1;
     public static final int IRPDISCRIMINATOR = 131;
     public static final int ISISVERSION = 1;
     public static final int RESERVED = 0;
     public static final int MAXAREAADDRESS = 0;
-    public static final int IDLENGTH = 0;
+    public static final int SYSTEMIDLENGTH = 0;
     public static final int PROTOCOLSUPPORTED = 204;
     public static final int LOCALCIRCUITIDFORP2P = 130;
     public static final int P2PHELLOHEADERLENGTH = 20;
@@ -48,6 +52,27 @@
     public static final int CHECKSUMPOSITION = 24;
     public static final String REFRESHLSP = "refreshLsp";
     public static final String MAXAGELSP = "maxAgeLsp";
+    public static final String DEFAULTLANID = "0000.0000.0000.00";
+    public static final String PROCESSESID = "processId";
+    public static final String INTERFACE = "interface";
+    public static final String INTERFACEIP = "interfaceIp";
+    public static final String NETWORKMASK = "networkMask";
+    public static final String INTERFACEINDEX = "interfaceIndex";
+    public static final String INTERMEDIATESYSTEMNAME = "intermediateSystemName";
+    public static final String SYSTEMID = "systemId";
+    public static final String LANID = "lanId";
+    public static final String IDLENGTH = "idLength";
+    public static final String MAXAREAADDRESSES = "maxAreaAddresses";
+    public static final String RESERVEDPACKETCIRCUITTYPE = "reservedPacketCircuitType";
+    public static final String CIRCUITID = "circuitId";
+    public static final String NETWORKTYPE = "networkType";
+    public static final String AREAADDRESS = "areaAddress";
+    public static final String AREALENGTH = "areaLength";
+    public static final String LSPID = "lspId";
+    public static final String HOLDINGTIME = "holdingTime";
+    public static final String HELLOINTERVAL = "helloInterval";
+    public static final String PRIORITY = "priority";
+    public static final String MACADDRESS = "macAddress";
 
     /**
      * Non parameterized constructor.
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/IsisUtil.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/IsisUtil.java
index 44ad9e0..c21a93b 100644
--- a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/IsisUtil.java
+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/IsisUtil.java
@@ -391,7 +391,7 @@
         isisHeader.setIrpDiscriminator((byte) IsisConstants.IRPDISCRIMINATOR);
         isisHeader.setPduHeaderLength((byte) IsisConstants.P2PHELLOHEADERLENGTH);
         isisHeader.setVersion((byte) IsisConstants.ISISVERSION);
-        isisHeader.setIdLength((byte) IsisConstants.IDLENGTH);
+        isisHeader.setIdLength((byte) IsisConstants.SYSTEMIDLENGTH);
         isisHeader.setIsisPduType(IsisPduType.P2PHELLOPDU.value());
         isisHeader.setVersion2((byte) IsisConstants.ISISVERSION);
         //isisHeader.setReserved((byte) IsisConstants.RESERVED);
@@ -484,7 +484,7 @@
         isisHeader.setIrpDiscriminator((byte) IsisConstants.IRPDISCRIMINATOR);
         isisHeader.setPduHeaderLength((byte) IsisConstants.HELLOHEADERLENGTH);
         isisHeader.setVersion((byte) IsisConstants.ISISVERSION);
-        isisHeader.setIdLength((byte) IsisConstants.IDLENGTH);
+        isisHeader.setIdLength((byte) IsisConstants.SYSTEMIDLENGTH);
         if (isisPduType == IsisPduType.L1HELLOPDU) {
             isisHeader.setIsisPduType(IsisPduType.L1HELLOPDU.value());
             lanId = isisInterface.l1LanId();
@@ -693,4 +693,19 @@
         }
         return prefix;
     }
+
+    /**
+     * Converts the prefix to bytes.
+     *
+     * @param prefix prefix
+     * @return prefix to bytes
+     */
+    public static byte[] prefixToBytes(String prefix) {
+        List<Byte> byteList = new ArrayList<>();
+        StringTokenizer tokenizer = new StringTokenizer(prefix, ".");
+        while (tokenizer.hasMoreTokens()) {
+            byteList.add((byte) Integer.parseInt(tokenizer.nextToken()));
+        }
+        return Bytes.toArray(byteList);
+    }
 }
\ No newline at end of file
diff --git a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/LspGenerator.java b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/LspGenerator.java
index 1dfb1a4..c6ae962 100644
--- a/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/LspGenerator.java
+++ b/protocols/isis/isisio/src/main/java/org/onosproject/isis/io/util/LspGenerator.java
@@ -26,6 +26,7 @@
 import org.onosproject.isis.io.isispacket.pdu.LsPdu;
 import org.onosproject.isis.io.isispacket.tlv.AreaAddressTlv;
 import org.onosproject.isis.io.isispacket.tlv.HostNameTlv;
+import org.onosproject.isis.io.isispacket.tlv.IpExtendedReachabilityTlv;
 import org.onosproject.isis.io.isispacket.tlv.IpInterfaceAddressTlv;
 import org.onosproject.isis.io.isispacket.tlv.IpInternalReachabilityTlv;
 import org.onosproject.isis.io.isispacket.tlv.IsReachabilityTlv;
@@ -115,7 +116,7 @@
         } else if (isisInterface.networkType() == IsisNetworkType.P2P) {
             MacAddress neighborMac = isisInterface.neighbors().iterator().next();
             IsisNeighbor neighbor = isisInterface.lookup(neighborMac);
-            metricsOfReachability.setNeighborId(neighbor.neighborSystemId());
+            metricsOfReachability.setNeighborId(neighbor.neighborSystemId() + ".00");
         }
 
         isReachabilityTlv.addMeticsOfReachability(metricsOfReachability);
@@ -137,10 +138,25 @@
         metricOfIntRea.setErrorMetric((byte) 0);
         metricOfIntRea.setErrorMetricSupported(false);
         metricOfIntRea.setExpenseIsInternal(true);
-        metricOfIntRea.setIpAddress(isisInterface.interfaceIpAddress());
+        Ip4Address ip4Address = isisInterface.interfaceIpAddress();
+        byte[] ipAddress = ip4Address.toOctets();
+        ipAddress[ipAddress.length - 1] = 0;
+        metricOfIntRea.setIpAddress(Ip4Address.valueOf(ipAddress));
         metricOfIntRea.setSubnetAddres(Ip4Address.valueOf(isisInterface.networkMask()));
         ipInterReacTlv.addInternalReachabilityMetric(metricOfIntRea);
         lsp.addTlv(ipInterReacTlv);
+
+        tlvHeader.setTlvType(TlvType.IPEXTENDEDREACHABILITY.value());
+        tlvHeader.setTlvLength(0);
+        IpExtendedReachabilityTlv extendedTlv = new IpExtendedReachabilityTlv(tlvHeader);
+        extendedTlv.setDown(false);
+        extendedTlv.setMetric(10);
+        extendedTlv.setPrefix("192.168.7");
+        extendedTlv.setPrefixLength(24);
+        extendedTlv.setSubTlvLength((byte) 0);
+        extendedTlv.setSubTlvPresence(false);
+        lsp.addTlv(extendedTlv);
+
         return lsp;
     }
 
@@ -149,7 +165,7 @@
         isisHeader.setIrpDiscriminator((byte) IsisConstants.IRPDISCRIMINATOR);
         isisHeader.setPduHeaderLength((byte) IsisUtil.getPduHeaderLength(pduType.value()));
         isisHeader.setVersion((byte) IsisConstants.ISISVERSION);
-        isisHeader.setIdLength((byte) IsisConstants.IDLENGTH);
+        isisHeader.setIdLength((byte) IsisConstants.SYSTEMIDLENGTH);
         isisHeader.setIsisPduType(pduType.value());
         isisHeader.setVersion2((byte) IsisConstants.ISISVERSION);
         isisHeader.setReserved((byte) IsisConstants.RESERVED);