From: Milos Fabian <milfabia@cisco.com>
Date: Tue, 4 Mar 2014 17:05:00 +0000 (+0100)
Subject: Added definition of vendor-specific tlv into pcep-types.
X-Git-Tag: release/helium~379^2
X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=bgpcep.git;a=commitdiff_plain;h=98a945e81546de51830a3495e7e50796cf6c9702

Added definition of vendor-specific tlv into pcep-types.
Added abstract vs-tlv parser.

Change-Id: I62f920f1db35161fe7fa37645f2a7318eaa434af
Signed-off-by: Milos Fabian <milfabia@cisco.com>
---

diff --git a/pcep/api/src/main/yang/pcep-types.yang b/pcep/api/src/main/yang/pcep-types.yang
index 365e2b369f..26c5dda9da 100644
--- a/pcep/api/src/main/yang/pcep-types.yang
+++ b/pcep/api/src/main/yang/pcep-types.yang
@@ -7,6 +7,7 @@ module pcep-types {
 	import ietf-inet-types { prefix inet; revision-date 2010-09-24; }
 	import network-concepts { prefix netc; revision-date 2013-11-25; }
 	import rsvp { prefix rsvp; revision-date 2013-08-20; }
+	import iana { prefix iana; revision-date 2013-08-16; }
 
 	organization "Cisco Systems, Inc.";
 	contact "Robert Varga <rovarga@cisco.com>";
@@ -157,6 +158,20 @@ module pcep-types {
 		}
 	}
 
+	grouping vs-tlv {
+        description "Vendor-specific TLV.";
+        container vs-tlv {
+                uses tlv;
+
+                leaf enterprise-number {
+                    type iana:enterprise-number;
+                }
+
+                choice vendor-payload {
+                }
+        }
+    }
+
 	// Objects
 	grouping object-header {
 		description "Common Object Header";
@@ -493,7 +508,6 @@ module pcep-types {
 			uses object;
 			uses rsvp:tunnel-attributes;
 			container "tlvs" {
-			
 			}
 		}
 	}
diff --git a/pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPLspaObjectParser.java b/pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPLspaObjectParser.java
index 2e666272c8..6865faadee 100644
--- a/pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPLspaObjectParser.java
+++ b/pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/object/PCEPLspaObjectParser.java
@@ -126,12 +126,12 @@ public class PCEPLspaObjectParser extends AbstractObjectWithTlvsParser<TlvsBuild
 	}
 
 	public byte[] serializeTlvs(final Tlvs tlvs) {
-		return new byte[0];
+	    return new byte[0];
 	}
 
 	@Override
 	public int getObjectType() {
-		return TYPE;
+	        return TYPE;
 	}
 
 	@Override
diff --git a/pcep/spi/src/main/java/org/opendaylight/protocol/pcep/spi/AbstractVendorSpecificTlvParser.java b/pcep/spi/src/main/java/org/opendaylight/protocol/pcep/spi/AbstractVendorSpecificTlvParser.java
new file mode 100644
index 0000000000..bd43e70e3c
--- /dev/null
+++ b/pcep/spi/src/main/java/org/opendaylight/protocol/pcep/spi/AbstractVendorSpecificTlvParser.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.protocol.pcep.spi;
+
+import org.opendaylight.protocol.util.ByteArray;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.iana.rev130816.EnterpriseNumber;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.Tlv;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.vs.tlv.VsTlv;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.vs.tlv.VsTlvBuilder;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.pcep.types.rev131005.vs.tlv.vs.tlv.VendorPayload;
+
+abstract public class AbstractVendorSpecificTlvParser implements TlvParser, TlvSerializer {
+
+    public static final int TYPE = 27;
+
+    protected static final int ENTERPRISE_NUM_LENGTH = 4;
+
+    @Override
+    public int getType() {
+        return TYPE;
+    }
+
+    @Override
+    public byte[] serializeTlv(Tlv tlv) {
+        if (tlv == null) {
+            throw new IllegalArgumentException("Vendor Specific Tlv is mandatory.");
+        }
+        final VsTlv vsTlv = (VsTlv) tlv;
+        if (vsTlv.getEnterpriseNumber().getValue() == getEnterpriseNumber()) {
+            final byte[] payloadBytes = serializeVendorPayload(vsTlv.getVendorPayload());
+            final byte[] ianaNumBytes = ByteArray.longToBytes(vsTlv.getEnterpriseNumber().getValue(),
+                    ENTERPRISE_NUM_LENGTH);
+
+            final byte[] bytes = new byte[ianaNumBytes.length + payloadBytes.length];
+            System.arraycopy(ianaNumBytes, 0, bytes, 0, ENTERPRISE_NUM_LENGTH);
+            System.arraycopy(payloadBytes, 0, bytes, ENTERPRISE_NUM_LENGTH, payloadBytes.length);
+            return bytes;
+        }
+        return new byte[0];
+    }
+
+    @Override
+    public VsTlv parseTlv(byte[] valueBytes) throws PCEPDeserializerException {
+        VsTlvBuilder vsTlvBuider = new VsTlvBuilder();
+        if (valueBytes == null || valueBytes.length == 0) {
+            throw new IllegalArgumentException("Array of bytes is mandatory. Can't be null or empty.");
+        }
+
+        byte[] enBytes = ByteArray.subByte(valueBytes, 0, ENTERPRISE_NUM_LENGTH);
+        long en = ByteArray.bytesToLong(enBytes);
+        if (en == getEnterpriseNumber()) {
+            vsTlvBuider.setEnterpriseNumber(new EnterpriseNumber(getEnterpriseNumber()));
+            int byteOffset = ENTERPRISE_NUM_LENGTH;
+            int payloadLength = valueBytes.length - byteOffset;
+            VendorPayload vendorPayload = null;
+            if (payloadLength > 0) {
+                byte[] payloadBytes = ByteArray.subByte(valueBytes, byteOffset, payloadLength);
+                vendorPayload = parseVendorPayload(payloadBytes);
+                if (vendorPayload != null) {
+                    vsTlvBuider.setVendorPayload(vendorPayload);
+                }
+            }
+        }
+        return vsTlvBuider.build();
+    }
+
+    abstract protected byte[] serializeVendorPayload(VendorPayload payload);
+
+    abstract protected long getEnterpriseNumber();
+
+    abstract protected VendorPayload parseVendorPayload(byte[] payloadBytes) throws PCEPDeserializerException;
+
+    protected static int getPadding(final int length, final int padding) {
+        return (padding - (length % padding)) % padding;
+    }
+}