Modified bgp file name according to naming convention.
Change-Id: I403139b53fbc1a2dba894dfd39720707a52ba7cd
diff --git a/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpNotificationMsgVer4.java b/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpNotificationMsgVer4.java
new file mode 100644
index 0000000..d25db24
--- /dev/null
+++ b/bgp/bgpio/src/main/java/org/onosproject/bgpio/protocol/ver4/BgpNotificationMsgVer4.java
@@ -0,0 +1,263 @@
+/*
+ * 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.protocol.ver4;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.onosproject.bgpio.exceptions.BgpParseException;
+import org.onosproject.bgpio.protocol.BgpMessageReader;
+import org.onosproject.bgpio.protocol.BgpMessageWriter;
+import org.onosproject.bgpio.protocol.BgpNotificationMsg;
+import org.onosproject.bgpio.protocol.BgpType;
+import org.onosproject.bgpio.protocol.BgpVersion;
+import org.onosproject.bgpio.types.BgpErrorType;
+import org.onosproject.bgpio.types.BgpHeader;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * A NOTIFICATION message is sent when an error condition is detected. The BGP connection is closed immediately after it
+ * is sent.
+ */
+class BgpNotificationMsgVer4 implements BgpNotificationMsg {
+
+ /*
+ 0 1 2 3
+ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | Error code | Error subcode | Data (variable) |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ REFERENCE : RFC 4271
+ */
+
+ private static final Logger log = LoggerFactory.getLogger(BgpNotificationMsgVer4.class);
+
+ static final byte PACKET_VERSION = 4;
+ //BGPHeader(19) + Error code(1) + Error subcode(1)
+ static final int TOTAL_MESSAGE_MIN_LENGTH = 21;
+ static final int PACKET_MINIMUM_LENGTH = 2;
+ static final BgpType MSG_TYPE = BgpType.NOTIFICATION;
+ static final byte DEFAULT_ERRORSUBCODE = 0;
+ static final byte[] MARKER = {(byte) 0xff, (byte) 0xff, (byte) 0xff,
+ (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+ (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+ (byte) 0xff, (byte) 0xff, (byte) 0xff };
+ static final byte MESSAGE_TYPE = 3;
+ static final BgpHeader DEFAULT_MESSAGE_HEADER = new BgpHeader(MARKER, BgpHeader.DEFAULT_HEADER_LENGTH,
+ MESSAGE_TYPE);
+
+ private byte errorCode;
+ private byte errorSubCode;
+ private byte[] data;
+ private BgpHeader bgpHeader;
+ public static final BgpNotificationMsgVer4.Reader READER = new Reader();
+
+ /**
+ * Initialize fields.
+ */
+ public BgpNotificationMsgVer4() {
+ this.bgpHeader = null;
+ this.data = null;
+ this.errorCode = 0;
+ this.errorSubCode = 0;
+ }
+
+ /**
+ * Constructor to initialize parameters.
+ *
+ * @param bgpHeader BGP Header in notification message
+ * @param errorCode error code
+ * @param errorSubCode error subcode
+ * @param data field
+ */
+ public BgpNotificationMsgVer4(BgpHeader bgpHeader, byte errorCode, byte errorSubCode, byte[] data) {
+ this.bgpHeader = bgpHeader;
+ this.data = data;
+ this.errorCode = errorCode;
+ this.errorSubCode = errorSubCode;
+ }
+
+ /**
+ * Reader reads BGP Notification Message from the channel buffer.
+ */
+ static class Reader implements BgpMessageReader<BgpNotificationMsg> {
+ @Override
+ public BgpNotificationMsg readFrom(ChannelBuffer cb, BgpHeader bgpHeader) throws BgpParseException {
+ byte errorCode;
+ byte errorSubCode;
+ if (cb.readableBytes() < PACKET_MINIMUM_LENGTH) {
+ throw new BgpParseException("Not enough readable bytes");
+ }
+ errorCode = cb.readByte();
+ errorSubCode = cb.readByte();
+ //Message Length = 21 + Data Length
+ int dataLength = bgpHeader.getLength() - TOTAL_MESSAGE_MIN_LENGTH;
+ byte[] data = new byte[dataLength];
+ cb.readBytes(data, 0, dataLength);
+ return new BgpNotificationMsgVer4(bgpHeader, errorCode, errorSubCode, data);
+ }
+ }
+
+ /**
+ * Builder class for BGP notification message.
+ */
+ static class Builder implements BgpNotificationMsg.Builder {
+ private byte errorCode;
+ private byte errorSubCode;
+ private byte[] data;
+ private BgpHeader bgpHeader;
+ private boolean isErrorCodeSet = false;
+ private boolean isErrorSubCodeSet = false;
+ private boolean isBGPHeaderSet = false;
+
+ @Override
+ public BgpNotificationMsg build() throws BgpParseException {
+ BgpHeader bgpHeader = this.isBGPHeaderSet ? this.bgpHeader : DEFAULT_MESSAGE_HEADER;
+ if (!this.isErrorCodeSet) {
+ throw new BgpParseException("Error code must be present");
+ }
+
+ byte errorSubCode = this.isErrorSubCodeSet ? this.errorSubCode : DEFAULT_ERRORSUBCODE;
+ return new BgpNotificationMsgVer4(bgpHeader, this.errorCode, errorSubCode, this.data);
+ }
+
+ @Override
+ public Builder setErrorCode(byte errorCode) {
+ this.errorCode = errorCode;
+ this.isErrorCodeSet = true;
+ return this;
+ }
+
+ @Override
+ public Builder setErrorSubCode(byte errorSubCode) {
+ this.errorSubCode = errorSubCode;
+ this.isErrorSubCodeSet = true;
+ return this;
+ }
+
+ @Override
+ public Builder setData(byte[] data) {
+ if (data != null) {
+ this.data = data;
+ }
+ return this;
+ }
+
+ @Override
+ public Builder setHeader(BgpHeader bgpMsgHeader) {
+ this.bgpHeader = bgpMsgHeader;
+ return this;
+ }
+ }
+
+ @Override
+ public BgpVersion getVersion() {
+ return BgpVersion.BGP_4;
+ }
+
+ @Override
+ public BgpType getType() {
+ return BgpType.NOTIFICATION;
+ }
+
+ @Override
+ public void writeTo(ChannelBuffer cb) throws BgpParseException {
+ WRITER.write(cb, this);
+ }
+
+ static final Writer WRITER = new Writer();
+
+ /**
+ * Writer writes BGP notification message to channel buffer.
+ */
+ static class Writer implements BgpMessageWriter<BgpNotificationMsgVer4> {
+ @Override
+ public void write(ChannelBuffer cb, BgpNotificationMsgVer4 message) throws BgpParseException {
+ int msgStartIndex = cb.writerIndex();
+ int headerLenIndex = message.bgpHeader.write(cb);
+ if (headerLenIndex <= 0) {
+ throw new BgpParseException(BgpErrorType.MESSAGE_HEADER_ERROR, (byte) 0, null);
+ }
+ cb.writeByte(message.errorCode);
+ cb.writeByte(message.errorSubCode);
+ cb.writeBytes(message.data);
+
+ //Update message length field in notification message
+ int length = cb.writerIndex() - msgStartIndex;
+ cb.setShort(headerLenIndex, (short) length);
+ message.bgpHeader.setLength((short) length);
+ }
+ }
+
+ @Override
+ public byte getErrorCode() {
+ return this.errorCode;
+ }
+
+ /**
+ * Sets errorcode with specified errorcode.
+ *
+ * @param errorCode field
+ */
+ public void setErrorCode(byte errorCode) {
+ this.errorCode = errorCode;
+ }
+
+ @Override
+ public byte getErrorSubCode() {
+ return this.errorSubCode;
+ }
+
+ /**
+ * Sets error subcode with specified errorSubCode.
+ *
+ * @param errorSubCode field
+ */
+ public void setErrorSubCode(byte errorSubCode) {
+ this.errorSubCode = errorSubCode;
+ }
+
+ @Override
+ public byte[] getData() {
+ return this.data;
+ }
+
+ /**
+ * Sets error data with specified data.
+ *
+ * @param data field
+ */
+ public void setData(byte[] data) {
+ this.data = data;
+ }
+
+ @Override
+ public BgpHeader getHeader() {
+ return this.bgpHeader;
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .omitNullValues()
+ .add("bgpHeader", bgpHeader)
+ .add("data", data)
+ .add("errorCode", errorCode)
+ .add("errorSubCode", errorSubCode)
+ .toString();
+ }
+}
\ No newline at end of file