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/*
* 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.types;
import org.jboss.netty.buffer.ChannelBuffer;
import org.onosproject.pcepio.protocol.PcepVersion;
import com.google.common.base.MoreObjects;
/**
* Provides Pcep Rsvp Ipv4 Error Spec.
*/
public class PcepRsvpIpv4ErrorSpec implements PcepRsvpErrorSpec {
/*
RSVP error spec object header.
0 1 2 3
+-------------+-------------+-------------+-------------+
| Length (bytes) | Class-Num | C-Type |
+-------------+-------------+-------------+-------------+
| |
// (Object contents) //
| |
+-------------+-------------+-------------+-------------+
Ref : ERROR_SPEC @ RFC2205
IPv4 ERROR_SPEC object: Class = 6, C-Type = 1
+-------------+-------------+-------------+-------------+
| IPv4 Error Node Address (4 bytes) |
+-------------+-------------+-------------+-------------+
| Flags | Error Code | Error Value |
+-------------+-------------+-------------+-------------+
*/
PcepRsvpSpecObjHeader objHeader;
public static final byte CLASS_NUM = 0x06;
public static final byte CLASS_TYPE = 0x01;
public static final byte CLASS_LENGTH = 0x0c;
private int ipv4Addr;
private byte flags;
private byte errCode;
private short errValue;
/**
* Constructor to initialize obj header, ipv4 addr, flags, err code and err value.
*
* @param objHeader rsvp ipv4 error spec object header
* @param ipv4Addr ipv4 address
* @param flags flags value
* @param errCode error code value
* @param errValue error value
*/
public PcepRsvpIpv4ErrorSpec(PcepRsvpSpecObjHeader objHeader, int ipv4Addr, byte flags, byte errCode,
short errValue) {
this.objHeader = objHeader;
this.ipv4Addr = ipv4Addr;
this.flags = flags;
this.errCode = errCode;
this.errValue = errValue;
}
/**
* Constructor to initialize ipv4 address, flags, err code and err value.
*
* @param ipv4Addr ipv4 address
* @param flags flags value
* @param errCode error code
* @param errValue error value
*/
public PcepRsvpIpv4ErrorSpec(int ipv4Addr, byte flags, byte errCode, short errValue) {
this.objHeader = new PcepRsvpSpecObjHeader(CLASS_LENGTH, CLASS_NUM, CLASS_TYPE);
this.ipv4Addr = ipv4Addr;
this.flags = flags;
this.errCode = errCode;
this.errValue = errValue;
}
@Override
public int write(ChannelBuffer cb) {
int objLenIndex = objHeader.write(cb);
cb.writeInt(ipv4Addr);
cb.writeByte(flags);
cb.writeByte(errCode);
cb.writeShort(errValue);
short objLen = (short) (cb.writerIndex() - objLenIndex);
cb.setShort(objLenIndex, objLen);
return objLen;
}
/**
* Reads PCPE RSVP error spec from channel buffer and returns PCEP rsvp IPv4 error spec object.
*
* @param cb channel buffer
* @return PCEP rsvp IPv4 error spec object
*/
public static PcepRsvpErrorSpec read(ChannelBuffer cb) {
PcepRsvpSpecObjHeader objHeader;
int ipv4Addr;
byte flags;
byte errCode;
short errValue;
objHeader = PcepRsvpSpecObjHeader.read(cb);
ipv4Addr = cb.readInt();
flags = cb.readByte();
errCode = cb.readByte();
errValue = cb.readShort();
return new PcepRsvpIpv4ErrorSpec(objHeader, ipv4Addr, flags, errCode, errValue);
}
@Override
public PcepVersion getVersion() {
return PcepVersion.PCEP_1;
}
@Override
public short getType() {
return StatefulRsvpErrorSpecTlv.TYPE;
}
@Override
public short getLength() {
return CLASS_LENGTH;
}
@Override
public byte getClassNum() {
return CLASS_NUM;
}
@Override
public byte getClassType() {
return CLASS_TYPE;
}
@Override
public String toString() {
return MoreObjects.toStringHelper(getClass())
.add("IPv4Address", ipv4Addr)
.add("flags", flags)
.add("errorCode", errCode)
.add("errorValue", errValue)
.toString();
}
}
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