diff options
author | Ashlee Young <ashlee@wildernessvoice.com> | 2015-11-03 14:08:10 -0800 |
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committer | Ashlee Young <ashlee@wildernessvoice.com> | 2015-11-03 14:08:10 -0800 |
commit | 643ee33289bd2cb9e6afbfb09b4ed72d467ba1c2 (patch) | |
tree | c2c376a44a359544fe3d4c45eb0cc0e2ec4a7080 /framework/src/onos/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/NextHop.java | |
parent | 46eeb79b54345bdafb6055b8ee4bad4ce8b01274 (diff) |
This updates ONOS src tree to commit id
03fa5e571cabbd001ddb1598847e1150b11c7333
Change-Id: I13b554026d6f902933e35887d29bd5fdb669c0bd
Signed-off-by: Ashlee Young <ashlee@wildernessvoice.com>
Diffstat (limited to 'framework/src/onos/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/NextHop.java')
-rw-r--r-- | framework/src/onos/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/NextHop.java | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/framework/src/onos/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/NextHop.java b/framework/src/onos/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/NextHop.java new file mode 100644 index 00000000..353ec3d5 --- /dev/null +++ b/framework/src/onos/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/NextHop.java @@ -0,0 +1,138 @@ +/* + * 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.bgpio.types; + +import java.net.InetAddress; +import java.util.Objects; + +import org.jboss.netty.buffer.ChannelBuffer; +import org.onlab.packet.Ip4Address; +import org.onosproject.bgpio.exceptions.BGPParseException; +import org.onosproject.bgpio.util.Validation; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import com.google.common.base.MoreObjects; +import com.google.common.base.Preconditions; + +/** + * Implementation of NextHop BGP Path Attribute. + */ +public class NextHop implements BGPValueType { + private static final Logger log = LoggerFactory.getLogger(NextHop.class); + public static final byte NEXTHOP_TYPE = 3; + public static final int TYPE_AND_LEN_AS_SHORT = 4; + public static final int TYPE_AND_LEN_AS_BYTE = 3; + + private boolean isNextHop = false; + private Ip4Address nextHop; + + /** + * Constructor to initialize parameters. + * + * @param nextHop nextHop address + */ + public NextHop(Ip4Address nextHop) { + this.nextHop = Preconditions.checkNotNull(nextHop); + this.isNextHop = true; + } + + /** + * Returns whether next hop is present. + * + * @return whether next hop is present + */ + public boolean isNextHopSet() { + return this.isNextHop; + } + + /** + * Reads from ChannelBuffer and parses NextHop. + * + * @param cb ChannelBuffer + * @return object of NextHop + * @throws BGPParseException while parsing nexthop attribute + */ + public static NextHop read(ChannelBuffer cb) throws BGPParseException { + Ip4Address nextHop; + ChannelBuffer tempCb = cb.copy(); + Validation parseFlags = Validation.parseAttributeHeader(cb); + + if (cb.readableBytes() < parseFlags.getLength()) { + Validation.validateLen(BGPErrorType.UPDATE_MESSAGE_ERROR, BGPErrorType.ATTRIBUTE_LENGTH_ERROR, + parseFlags.getLength()); + } + int len = parseFlags.isShort() ? parseFlags.getLength() + TYPE_AND_LEN_AS_SHORT : parseFlags + .getLength() + TYPE_AND_LEN_AS_BYTE; + ChannelBuffer data = tempCb.readBytes(len); + if (parseFlags.getFirstBit() && !parseFlags.getSecondBit() && parseFlags.getThirdBit()) { + throw new BGPParseException(BGPErrorType.UPDATE_MESSAGE_ERROR, BGPErrorType.ATTRIBUTE_FLAGS_ERROR, data); + } + + //TODO: use Validation.toInetAddress once Validation is merged + InetAddress ipAddress = (InetAddress) cb.readBytes(parseFlags.getLength()); + if (ipAddress.isMulticastAddress()) { + throw new BGPParseException("Multicast address is not supported"); + } + + nextHop = Ip4Address.valueOf(ipAddress); + return new NextHop(nextHop); + } + + /** + * Return nexthop address. + * + * @return nexthop address + */ + public Ip4Address nextHop() { + return nextHop; + } + + @Override + public short getType() { + return NEXTHOP_TYPE; + } + + @Override + public int write(ChannelBuffer cb) { + //Not required to be implemented now + return 0; + } + + @Override + public int hashCode() { + return Objects.hash(nextHop); + } + + @Override + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if (obj instanceof NextHop) { + NextHop other = (NextHop) obj; + return Objects.equals(nextHop, other.nextHop); + } + return false; + } + + @Override + public String toString() { + return MoreObjects.toStringHelper(getClass()) + .add("nextHop", nextHop) + .toString(); + } +}
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