[Emu][ONOS-2593, ONOS-2594] BGP SBI controller and session handler
Change-Id: Ia95717ff173b2e3e1198bdd0fafef7cb0aa8f734
diff --git a/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BGPHeader.java b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BGPHeader.java
new file mode 100755
index 0000000..6acda0d
--- /dev/null
+++ b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BGPHeader.java
@@ -0,0 +1,161 @@
+/*
+ * 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 org.jboss.netty.buffer.ChannelBuffer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Provides BGP Message Header which is common for all the Messages.
+ */
+
+public class BGPHeader {
+
+ /* 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
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | |
+ + +
+ | |
+ + +
+ | Marker |
+ + +
+ | |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ | Length | Type |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+
+ protected static final Logger log = LoggerFactory.getLogger(BGPHeader.class);
+
+ public static final int MARKER_LENGTH = 16;
+ public static final short DEFAULT_HEADER_LENGTH = 19;
+
+ private byte[] marker;
+ private byte type;
+ private short length;
+
+ /**
+ * Reset fields.
+ */
+ public BGPHeader() {
+ this.marker = null;
+ this.length = 0;
+ this.type = 0;
+ }
+
+ /**
+ * Constructors to initialize parameters.
+ *
+ * @param marker field in BGP header
+ * @param length message length
+ * @param type message type
+ */
+ public BGPHeader(byte[] marker, short length, byte type) {
+ this.marker = marker;
+ this.length = length;
+ this.type = type;
+ }
+
+ /**
+ * Sets marker field.
+ *
+ * @param value marker field
+ */
+ public void setMarker(byte[] value) {
+ this.marker = value;
+ }
+
+ /**
+ * Sets message type.
+ *
+ * @param value message type
+ */
+ public void setType(byte value) {
+ this.type = value;
+ }
+
+ /**
+ * Sets message length.
+ *
+ * @param value message length
+ */
+ public void setLength(short value) {
+ this.length = value;
+ }
+
+ /**
+ * Returns message length.
+ *
+ * @return message length
+ */
+ public short getLength() {
+ return this.length;
+ }
+
+ /**
+ * Returns message marker.
+ *
+ * @return message marker
+ */
+ public byte[] getMarker() {
+ return this.marker;
+ }
+
+ /**
+ * Returns message type.
+ *
+ * @return message type
+ */
+ public byte getType() {
+ return this.type;
+ }
+
+ /**
+ * Writes Byte stream of BGP header to channel buffer.
+ *
+ * @param cb ChannelBuffer
+ * @return length index of message header
+ */
+ public int write(ChannelBuffer cb) {
+
+ cb.writeBytes(getMarker(), 0, MARKER_LENGTH);
+
+ int headerLenIndex = cb.writerIndex();
+ cb.writeShort((short) 0);
+ cb.writeByte(type);
+
+ return headerLenIndex;
+ }
+
+ /**
+ * Read from channel buffer and Returns BGP header.
+ *
+ * @param cb ChannelBuffer
+ * @return object of BGPHeader
+ */
+ public static BGPHeader read(ChannelBuffer cb) {
+
+ byte[] marker = new byte[MARKER_LENGTH];
+ byte type;
+ short length;
+ cb.readBytes(marker, 0, MARKER_LENGTH);
+ length = cb.readShort();
+ type = cb.readByte();
+ return new BGPHeader(marker, length, type);
+ }
+}
\ No newline at end of file
diff --git a/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BGPValueType.java b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BGPValueType.java
new file mode 100755
index 0000000..54a8b43
--- /dev/null
+++ b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/BGPValueType.java
@@ -0,0 +1,39 @@
+/*
+ * 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 org.jboss.netty.buffer.ChannelBuffer;
+
+/**
+ * Abstraction which Provides the BGP of TLV format.
+ */
+public interface BGPValueType {
+ /**
+ * Returns the Type of BGP Message.
+ *
+ * @return short value of type
+ */
+ short getType();
+
+ /**
+ * Writes the byte Stream of BGP Message to channel buffer.
+ *
+ * @param cb channel buffer
+ * @return length written to channel buffer
+ */
+ int write(ChannelBuffer cb);
+}
\ No newline at end of file