1 files changed, 168 insertions, 0 deletions
diff --git a/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcepLabelRangeVer1.java b/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcepLabelRangeVer1.java
new file mode 100644
index 00000000..411c9604
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+++ b/framework/src/onos/protocols/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcepLabelRangeVer1.java
@@ -0,0 +1,168 @@
+/*
+ * Copyright 2015 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.pcepio.protocol.ver1;
+
+import java.util.LinkedList;
+import java.util.ListIterator;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.onosproject.pcepio.exceptions.PcepParseException;
+import org.onosproject.pcepio.protocol.PcepLabelRange;
+import org.onosproject.pcepio.protocol.PcepLabelRangeObject;
+import org.onosproject.pcepio.protocol.PcepSrpObject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * Provides PCEP Label Range.
+ */
+public class PcepLabelRangeVer1 implements PcepLabelRange {
+
+    protected static final Logger log = LoggerFactory.getLogger(PcepLabelRangeVer1.class);
+
+    /*
+        <label-range> ::= <SRP>
+                          <labelrange-list>
+        Where
+                <labelrange-list>::=<LABEL-RANGE>[<labelrange-list>]
+     */
+
+    // PCEP SRP Object
+    private PcepSrpObject srpObject;
+    //<labelrange-list> of type PcepLabelRangeObject.
+    private LinkedList<PcepLabelRangeObject> llLabelRangeList;
+
+    /**
+     * Default Constructor.
+     */
+    public PcepLabelRangeVer1() {
+        srpObject = null;
+        llLabelRangeList = null;
+    }
+
+    /**
+     * Constructor to initialize objects.
+     *
+     * @param srpObj PCEP Srp object.
+     * @param llLabelRangeList list of PcepLabelRangeObject.
+     */
+    PcepLabelRangeVer1(PcepSrpObject srpObj, LinkedList<PcepLabelRangeObject> llLabelRangeList) {
+        this.srpObject = srpObj;
+        this.llLabelRangeList = llLabelRangeList;
+    }
+
+    @Override
+    public PcepSrpObject getSrpObject() {
+        return srpObject;
+    }
+
+    @Override
+    public void setSrpObject(PcepSrpObject srpObject) {
+        this.srpObject = srpObject;
+
+    }
+
+    @Override
+    public LinkedList<PcepLabelRangeObject> getLabelRangeList() {
+        return llLabelRangeList;
+    }
+
+    @Override
+    public void setLabelRangeList(LinkedList<PcepLabelRangeObject> ll) {
+        this.llLabelRangeList = ll;
+    }
+
+    /**
+     * Reads channel buffer and returns object of PcepLabelRange.
+     *
+     * @param cb of type channel buffer.
+     * @return object of PcepLabelRange
+     * @throws PcepParseException when fails to read from channel buffer
+     */
+    public static PcepLabelRange read(ChannelBuffer cb) throws PcepParseException {
+
+        //parse and store SRP mandatory object
+        PcepSrpObject srpObj = null;
+        srpObj = PcepSrpObjectVer1.read(cb);
+        if (srpObj == null) {
+            throw new PcepParseException("Exception while parsing srp object");
+        }
+
+        LinkedList<PcepLabelRangeObject> llLabelRangeList = new LinkedList<>();
+        boolean bFoundLabelRangeObj = false;
+        while (0 < cb.readableBytes()) {
+            //parse and store <labelrange-list>
+            PcepLabelRangeObject lrObj;
+            lrObj = PcepLabelRangeObjectVer1.read(cb);
+            if (lrObj == null) {
+                throw new PcepParseException("Exception while parsing label range object");
+            } else {
+                llLabelRangeList.add(lrObj);
+                bFoundLabelRangeObj = true;
+            }
+        }
+
+        if (!bFoundLabelRangeObj) {
+            throw new PcepParseException("At least one LABEL-RANGE MUST be present.");
+        }
+        return new PcepLabelRangeVer1(srpObj, llLabelRangeList);
+    }
+
+    @Override
+    public int write(ChannelBuffer cb) throws PcepParseException {
+        //write Object header
+        int objStartIndex = cb.writerIndex();
+
+        //write <SRP>
+        int objLenIndex = srpObject.write(cb);
+
+        if (objLenIndex <= 0) {
+            throw new PcepParseException("bjectLength is " + objLenIndex);
+        }
+
+        //write <labelrange-list>
+        ListIterator<PcepLabelRangeObject> listIterator = llLabelRangeList.listIterator();
+        while (listIterator.hasNext()) {
+            listIterator.next().write(cb);
+        }
+
+        //Update object length now
+        int length = cb.writerIndex() - objStartIndex;
+        // As per RFC the length of object should be
+        // multiples of 4
+        int pad = length % 4;
+        if (pad != 0) {
+            pad = 4 - pad;
+            for (int i = 0; i < pad; i++) {
+                cb.writeByte((byte) 0);
+            }
+            length = length + pad;
+        }
+        cb.setShort(objLenIndex, (short) length);
+        return length;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass())
+                .add("srpObject", srpObject)
+                .add("LabelRangeList", llLabelRangeList)
+                .toString();
+    }
+}