Implementation of PcInitate and PcUpdate messages
Change-Id: I746a5860a8b4a8022d747a02075ed3237741c53a
diff --git a/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcepMessageVer1.java b/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcepMessageVer1.java
new file mode 100644
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--- /dev/null
+++ b/pcep/pcepio/src/main/java/org/onosproject/pcepio/protocol/ver1/PcepMessageVer1.java
@@ -0,0 +1,122 @@
+/*
+ * 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.protocol.ver1;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.onosproject.pcepio.exceptions.PcepParseException;
+import org.onosproject.pcepio.protocol.PcepFactories;
+import org.onosproject.pcepio.protocol.PcepMessage;
+import org.onosproject.pcepio.protocol.PcepMessageReader;
+import org.onosproject.pcepio.types.PcepErrorDetailInfo;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public abstract class PcepMessageVer1 {
+
+ protected static final Logger log = LoggerFactory.getLogger(PcepFactories.class);
+
+ // version: 1.0
+ static final byte WIRE_VERSION = 1;
+ static final int MINIMUM_LENGTH = 4;
+ static final int PACKET_VERSION = 1;
+ static final byte OPEN_MSG_TYPE = 0x1;
+ static final byte KEEPALIVE_MSG_TYPE = 0x2;
+ static final byte REPORT_MSG_TYPE = 0xa;
+ static final byte TE_REPORT_MSG_TYPE = 0xe;
+ static final byte UPDATE_MSG_TYPE = 0xb;
+ static final byte INITIATE_MSG_TYPE = 0xc;
+ static final byte CLOSE_MSG_TYPE = 0x7;
+ static final byte ERROR_MSG_TYPE = 0x6;
+ static final byte LABEL_UPDATE_MSG_TYPE = 0xD;
+ public static final int SHIFT_FLAG = 5;
+ static final int MINIMUM_COMMON_HEADER_LENGTH = 4;
+
+ public static final PcepMessageVer1.Reader READER = new Reader();
+
+ static class Reader implements PcepMessageReader<PcepMessage> {
+ @Override
+ public PcepMessage readFrom(ChannelBuffer cb) throws PcepParseException {
+
+ if (cb.readableBytes() < MINIMUM_LENGTH) {
+ throw new PcepParseException("Packet should have minimum length: " + MINIMUM_LENGTH);
+ }
+
+ try {
+ int start = cb.readerIndex();
+ // fixed value property version == 1
+ byte version = cb.readByte();
+ version = (byte) (version >> PcepMessageVer1.SHIFT_FLAG);
+ if (version != (byte) PACKET_VERSION) {
+ throw new PcepParseException("Wrong version. Expected=PcepVersion.Message_1(1), got=" + version);
+ }
+
+ byte type = cb.readByte();
+ short length = cb.readShort();
+ cb.readerIndex(start);
+
+ switch (type) {
+
+ case OPEN_MSG_TYPE:
+ log.debug("OPEN MESSAGE is received");
+ // message type value 1 means it is open message
+ // return
+ // TODO: Read open message from channel buffer.
+ case KEEPALIVE_MSG_TYPE:
+ log.debug("KEEPALIVE MESSAGE is received");
+ // message type value 2 means it is Keepalive message
+ return PcepKeepaliveMsgVer1.READER.readFrom(cb.readBytes(length));
+ case ERROR_MSG_TYPE:
+ log.debug("ERROR MESSAGE is received");
+ // message type value 6 means it is error message
+ // return
+ // TODO: Read Error message from channel buffer.
+ case REPORT_MSG_TYPE:
+ log.debug("REPORT MESSAGE is received");
+ // message type value 10 means it is Report message
+ // return
+ // TODO: Read Report message from channel buffer.
+ case UPDATE_MSG_TYPE:
+ log.debug("UPDATE MESSAGE is received");
+ //message type value 11 means it is Update message
+ return PcepUpdateMsgVer1.READER.readFrom(cb.readBytes(length));
+ case INITIATE_MSG_TYPE:
+ log.debug("INITIATE MESSAGE is received");
+ //message type value 12 means it is PcInitiate message
+ return PcepInitiateMsgVer1.READER.readFrom(cb.readBytes(length));
+ case CLOSE_MSG_TYPE:
+ log.debug("CLOSE MESSAGE is received");
+ // message type value 7 means it is Close message
+ return PcepCloseMsgVer1.READER.readFrom(cb.readBytes(length));
+ case TE_REPORT_MSG_TYPE:
+ log.debug("TE REPORT MESSAGE is received");
+ // message type value 14 means it is TE REPORT message
+ // return
+ // TODO: Read TE Report message from channel buffer.
+ case LABEL_UPDATE_MSG_TYPE:
+ log.debug("LABEL UPDATE MESSAGE is received");
+ // message type value 13 means it is LABEL UPDATE message
+ // return
+ // TODO: Read Label update message from channel buffer.
+ default:
+ throw new PcepParseException("ERROR: UNKNOWN MESSAGE is received. Msg Type: " + type);
+ }
+ } catch (IndexOutOfBoundsException e) {
+ throw new PcepParseException(PcepErrorDetailInfo.ERROR_TYPE_1, PcepErrorDetailInfo.ERROR_VALUE_1);
+ }
+ }
+ }
+}