[ONOS-3856] BGP flow specification extended community path attribute parsing.
Change-Id: I9ea9db5565e91598328fdb703186c3d6577e2dc7
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpExtendedCommunity.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpExtendedCommunity.java
new file mode 100644
index 0000000..880b332
--- /dev/null
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpExtendedCommunity.java
@@ -0,0 +1,170 @@
+/*
+ * Copyright 2016 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 com.google.common.base.MoreObjects;
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.onosproject.bgpio.exceptions.BgpParseException;
+import org.onosproject.bgpio.util.Constants;
+import org.onosproject.bgpio.util.Validation;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.util.Objects;
+
+/**
+ * Provides implementation of extended community BGP Path Attribute.
+ */
+public class BgpExtendedCommunity implements BgpValueType {
+
+ private static final Logger log = LoggerFactory.getLogger(BgpExtendedCommunity.class);
+ public static final short TYPE = Constants.BGP_EXTENDED_COMMUNITY;
+ public static final byte FLAGS = (byte) 0xC0;
+ private BgpValueType fsActionTlv;
+
+ /**
+ * Constructor to initialize the value.
+ *
+ * @param fsActionTlv flow specification action type
+ */
+ public BgpExtendedCommunity(BgpValueType fsActionTlv) {
+ this.fsActionTlv = fsActionTlv;
+ }
+
+ /**
+ * Returns extended community type.
+ *
+ * @return extended community
+ */
+ public BgpValueType fsActionTlv() {
+ return this.fsActionTlv;
+ }
+
+ /**
+ * Reads from the channel buffer and parses extended community.
+ *
+ * @param cb ChannelBuffer
+ * @return object of BgpExtendedCommunity
+ * @throws BgpParseException while parsing extended community
+ */
+ public static BgpExtendedCommunity read(ChannelBuffer cb) throws BgpParseException {
+
+ ChannelBuffer tempCb = cb.copy();
+ Validation validation = Validation.parseAttributeHeader(cb);
+ BgpValueType fsActionTlv = null;
+
+ if (cb.readableBytes() < validation.getLength()) {
+ Validation.validateLen(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_LENGTH_ERROR,
+ validation.getLength());
+ }
+ //if fourth bit is set, length is read as short otherwise as byte , len includes type, length and value
+ int len = validation.isShort() ? validation.getLength() + Constants.TYPE_AND_LEN_AS_SHORT : validation
+ .getLength() + Constants.TYPE_AND_LEN_AS_BYTE;
+ ChannelBuffer data = tempCb.readBytes(len);
+ if (validation.getFirstBit() && !validation.getSecondBit() && validation.getThirdBit()) {
+ throw new BgpParseException(BgpErrorType.UPDATE_MESSAGE_ERROR, BgpErrorType.ATTRIBUTE_FLAGS_ERROR, data);
+ }
+
+ ChannelBuffer tempBuf = cb.readBytes(validation.getLength());
+ if (tempBuf.readableBytes() > 0) {
+ ChannelBuffer actionBuf = tempBuf.readBytes(validation.getLength());
+ short actionType = actionBuf.readShort();
+ short length = (short) validation.getLength();
+ switch (actionType) {
+ case Constants.BGP_FLOWSPEC_ACTION_TRAFFIC_ACTION:
+ fsActionTlv = BgpFsActionTrafficAction.read(actionBuf);
+ break;
+ case Constants.BGP_FLOWSPEC_ACTION_TRAFFIC_MARKING:
+ fsActionTlv = BgpFsActionTrafficMarking.read(actionBuf);
+ break;
+ case Constants.BGP_FLOWSPEC_ACTION_TRAFFIC_RATE:
+ fsActionTlv = BgpFsActionTrafficRate.read(actionBuf);
+ break;
+ case Constants.BGP_FLOWSPEC_ACTION_TRAFFIC_REDIRECT:
+ fsActionTlv = BgpFsActionReDirect.read(actionBuf);
+ break;
+ default: log.debug("Other type Not Supported:" + actionType);
+ break;
+ }
+ }
+ return new BgpExtendedCommunity(fsActionTlv);
+ }
+
+ @Override
+ public short getType() {
+ return TYPE;
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(fsActionTlv);
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+ if (obj instanceof BgpExtendedCommunity) {
+ BgpExtendedCommunity other = (BgpExtendedCommunity) obj;
+ return Objects.equals(fsActionTlv, other.fsActionTlv);
+ }
+ return false;
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .omitNullValues()
+ .add("fsActionTlv", fsActionTlv)
+ .toString();
+ }
+
+ @Override
+ public int write(ChannelBuffer cb) {
+ int iLenStartIndex = cb.writerIndex();
+ cb.writeByte(FLAGS);
+ cb.writeByte(getType());
+
+ int iActionLenIndex = cb.writerIndex();
+ cb.writeByte(0);
+
+ if (fsActionTlv.getType() == Constants.BGP_FLOWSPEC_ACTION_TRAFFIC_ACTION) {
+ BgpFsActionTrafficAction trafficAction = (BgpFsActionTrafficAction) fsActionTlv;
+ trafficAction.write(cb);
+ } else if (fsActionTlv.getType() == Constants.BGP_FLOWSPEC_ACTION_TRAFFIC_MARKING) {
+ BgpFsActionTrafficMarking trafficMarking = (BgpFsActionTrafficMarking) fsActionTlv;
+ trafficMarking.write(cb);
+ } else if (fsActionTlv.getType() == Constants.BGP_FLOWSPEC_ACTION_TRAFFIC_RATE) {
+ BgpFsActionTrafficRate trafficRate = (BgpFsActionTrafficRate) fsActionTlv;
+ trafficRate.write(cb);
+ } else if (fsActionTlv.getType() == Constants.BGP_FLOWSPEC_ACTION_TRAFFIC_REDIRECT) {
+ BgpFsActionReDirect trafficRedirect = (BgpFsActionReDirect) fsActionTlv;
+ trafficRedirect.write(cb);
+ }
+
+ int fsActionLen = cb.writerIndex() - iActionLenIndex;
+ cb.setByte(iActionLenIndex, (byte) (fsActionLen - 1));
+
+ return cb.writerIndex() - iLenStartIndex;
+ }
+
+ @Override
+ public int compareTo(Object o) {
+ // TODO Auto-generated method stub
+ return 0;
+ }
+}
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionReDirect.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionReDirect.java
index 650cce1..87f180d 100755
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionReDirect.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionReDirect.java
@@ -77,12 +77,15 @@
* Reads the channel buffer and returns object.
*
* @param cb channelBuffer
- * @param type address type
* @return object of flow spec action redirect
* @throws BgpParseException while parsing BgpFsActionReDirect
*/
- public static BgpFsActionReDirect read(ChannelBuffer cb, short type) throws BgpParseException {
- return null;
+ public static BgpFsActionReDirect read(ChannelBuffer cb) throws BgpParseException {
+ byte[] routeTarget;
+ ChannelBuffer tempCb = cb.copy();
+
+ routeTarget = tempCb.readBytes(tempCb.readableBytes()).array();
+ return new BgpFsActionReDirect(routeTarget);
}
@Override
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficAction.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficAction.java
index 17856c6..4cedb6a 100755
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficAction.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficAction.java
@@ -77,12 +77,15 @@
* Reads the channel buffer and returns object.
*
* @param cb channelBuffer
- * @param type address type
* @return object of flow spec action traffic rate
* @throws BgpParseException while parsing BgpFsActionTrafficAction
*/
- public static BgpFsActionTrafficAction read(ChannelBuffer cb, short type) throws BgpParseException {
- return null;
+ public static BgpFsActionTrafficAction read(ChannelBuffer cb) throws BgpParseException {
+ byte[] bitMask;
+ ChannelBuffer tempCb = cb.copy();
+
+ bitMask = tempCb.readBytes(tempCb.readableBytes()).array();
+ return new BgpFsActionTrafficAction(bitMask);
}
@Override
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficMarking.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficMarking.java
index cf192ec..6aee0f4 100755
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficMarking.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficMarking.java
@@ -77,12 +77,15 @@
* Reads the channel buffer and returns object.
*
* @param cb channelBuffer
- * @param type address type
* @return object of flow spec action traffic marking
* @throws BgpParseException while parsing BgpFsActionTrafficMarking
*/
- public static BgpFsActionTrafficMarking read(ChannelBuffer cb, short type) throws BgpParseException {
- return null;
+ public static BgpFsActionTrafficMarking read(ChannelBuffer cb) throws BgpParseException {
+ byte[] dscpValue;
+ ChannelBuffer tempCb = cb.copy();
+
+ dscpValue = tempCb.readBytes(tempCb.readableBytes()).array();
+ return new BgpFsActionTrafficMarking(dscpValue);
}
@Override
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficRate.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficRate.java
index e96642e..8f77ff0 100755
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficRate.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BgpFsActionTrafficRate.java
@@ -80,12 +80,17 @@
* Reads the channel buffer and returns object.
*
* @param cb channelBuffer
- * @param type address type
* @return object of flow spec action traffic rate
* @throws BgpParseException while parsing BgpFsActionTrafficRate
*/
- public static BgpFsActionTrafficRate read(ChannelBuffer cb, short type) throws BgpParseException {
- return null;
+ public static BgpFsActionTrafficRate read(ChannelBuffer cb) throws BgpParseException {
+ short asn;
+ float rate;
+ ChannelBuffer tempCb = cb.copy();
+
+ asn = tempCb.readShort();
+ rate = tempCb.readFloat();
+ return new BgpFsActionTrafficRate(asn, rate);
}
@Override
diff --git a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/util/Constants.java b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/util/Constants.java
index 33fdfc8..8d68742 100644
--- a/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/util/Constants.java
+++ b/protocols/bgp/bgpio/src/main/java/org/onosproject/bgpio/util/Constants.java
@@ -48,6 +48,8 @@
public static final int ENHANCED = 0x20;
public static final int RESERVED = 0x40;
+ public static final byte BGP_EXTENDED_COMMUNITY = 0x10;
+
public static final byte BGP_FLOWSPEC_DST_PREFIX = 0x01;
public static final byte BGP_FLOWSPEC_SRC_PREFIX = 0x02;
public static final byte BGP_FLOWSPEC_IP_PROTO = 0x03;