Java tutorial
/* * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html */ package org.opendaylight.openflowjava.protocol.impl.deserialization.factories; import io.netty.buffer.ByteBuf; import java.math.BigInteger; import java.util.ArrayList; import java.util.List; import org.opendaylight.openflowjava.protocol.impl.deserialization.OFDeserializer; import org.opendaylight.openflowjava.protocol.impl.util.ByteBufUtils; import org.opendaylight.openflowjava.protocol.impl.util.EncodeConstants; import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.yang.types.rev100924.MacAddress; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.ActionTypeV10; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.CapabilitiesV10; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortConfigV10; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortFeaturesV10; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortStateV10; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutputBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.features.reply.PhyPort; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.features.reply.PhyPortBuilder; /** * Translates FeaturesReply messages (OpenFlow v1.0) * @author michal.polkorab */ public class OF10FeaturesReplyMessageFactory implements OFDeserializer<GetFeaturesOutput> { private static final byte PADDING_IN_FEATURES_REPLY_HEADER = 3; private static OF10FeaturesReplyMessageFactory instance; private OF10FeaturesReplyMessageFactory() { // do nothing, just singleton } /** * @return singleton factory */ public static synchronized OF10FeaturesReplyMessageFactory getInstance() { if (instance == null) { instance = new OF10FeaturesReplyMessageFactory(); } return instance; } @Override public GetFeaturesOutput bufferToMessage(ByteBuf rawMessage, short version) { GetFeaturesOutputBuilder builder = new GetFeaturesOutputBuilder(); builder.setVersion(version); builder.setXid(rawMessage.readUnsignedInt()); byte[] datapathId = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES]; rawMessage.readBytes(datapathId); builder.setDatapathId(new BigInteger(1, datapathId)); builder.setBuffers(rawMessage.readUnsignedInt()); builder.setTables(rawMessage.readUnsignedByte()); rawMessage.skipBytes(PADDING_IN_FEATURES_REPLY_HEADER); builder.setCapabilitiesV10(createCapabilitiesV10(rawMessage.readUnsignedInt())); builder.setActionsV10(createActionsV10(rawMessage.readUnsignedInt())); List<PhyPort> ports = new ArrayList<>(); while (rawMessage.readableBytes() > 0) { ports.add(deserializePort(rawMessage)); } builder.setPhyPort(ports); return builder.build(); } private static CapabilitiesV10 createCapabilitiesV10(long input) { final Boolean FLOW_STATS = (input & (1 << 0)) != 0; final Boolean TABLE_STATS = (input & (1 << 1)) != 0; final Boolean PORT_STATS = (input & (1 << 2)) != 0; final Boolean STP = (input & (1 << 3)) != 0; final Boolean RESERVED = (input & (1 << 4)) != 0; final Boolean IP_REASM = (input & (1 << 5)) != 0; final Boolean QUEUE_STATS = (input & (1 << 6)) != 0; final Boolean ARP_MATCH_IP = (input & (1 << 7)) != 0; return new CapabilitiesV10(ARP_MATCH_IP, FLOW_STATS, IP_REASM, PORT_STATS, QUEUE_STATS, RESERVED, STP, TABLE_STATS); } private static ActionTypeV10 createActionsV10(long input) { final Boolean OUTPUT = (input & (1 << 0)) != 0; final Boolean SET_VLAN_VID = (input & (1 << 1)) != 0; final Boolean SET_VLAN_PCP = (input & (1 << 2)) != 0; final Boolean STRIP_VLAN = (input & (1 << 3)) != 0; final Boolean SET_DL_SRC = (input & (1 << 4)) != 0; final Boolean SET_DL_DST = (input & (1 << 5)) != 0; final Boolean SET_NW_SRC = (input & (1 << 6)) != 0; final Boolean SET_NW_DST = (input & (1 << 7)) != 0; final Boolean SET_NW_TOS = (input & (1 << 8)) != 0; final Boolean SET_TP_SRC = (input & (1 << 9)) != 0; final Boolean SET_TP_DST = (input & (1 << 10)) != 0; final Boolean ENQUEUE = (input & (1 << 11)) != 0; final Boolean VENDOR = (input & (1 << 12)) != 0; return new ActionTypeV10(ENQUEUE, OUTPUT, SET_DL_DST, SET_DL_SRC, SET_NW_DST, SET_NW_SRC, SET_NW_TOS, SET_TP_DST, SET_TP_SRC, SET_VLAN_PCP, SET_VLAN_VID, STRIP_VLAN, VENDOR); } private static PhyPort deserializePort(ByteBuf rawMessage) { PhyPortBuilder builder = new PhyPortBuilder(); builder.setPortNo((long) rawMessage.readUnsignedShort()); byte[] address = new byte[EncodeConstants.MAC_ADDRESS_LENGTH]; rawMessage.readBytes(address); builder.setHwAddr(new MacAddress(ByteBufUtils.macAddressToString(address))); builder.setName(ByteBufUtils.decodeNullTerminatedString(rawMessage, EncodeConstants.MAX_PORT_NAME_LENGTH)); builder.setConfigV10(createPortConfig(rawMessage.readUnsignedInt())); builder.setStateV10(createPortState(rawMessage.readUnsignedInt())); builder.setCurrentFeaturesV10(createPortFeatures(rawMessage.readUnsignedInt())); builder.setAdvertisedFeaturesV10(createPortFeatures(rawMessage.readUnsignedInt())); builder.setSupportedFeaturesV10(createPortFeatures(rawMessage.readUnsignedInt())); builder.setPeerFeaturesV10(createPortFeatures(rawMessage.readUnsignedInt())); return builder.build(); } private static PortStateV10 createPortState(long input) { final Boolean _linkDown = ((input) & (1 << 0)) != 0; final Boolean _blocked = ((input) & (1 << 1)) != 0; final Boolean _live = ((input) & (1 << 2)) != 0; final Boolean _stpListen = ((input) & (0 << 8)) != 0; final Boolean _stpLearn = ((input) & (1 << 8)) != 0; final Boolean _stpForward = ((input) & (1 << 9)) != 0; // equals 2 << 8 final Boolean _stpBlock = (((input) & (1 << 9)) != 0) && (((input) & (1 << 8)) != 0); // equals 3 << 8 final Boolean _stpMask = ((input) & (1 << 10)) != 0; // equals 4 << 8 return new PortStateV10(_blocked, _linkDown, _live, _stpBlock, _stpForward, _stpLearn, _stpListen, _stpMask); } private static PortConfigV10 createPortConfig(long input) { final Boolean _portDown = ((input) & (1 << 0)) != 0; final Boolean _noStp = ((input) & (1 << 1)) != 0; final Boolean _noRecv = ((input) & (1 << 2)) != 0; final Boolean _noRecvStp = ((input) & (1 << 3)) != 0; final Boolean _noFlood = ((input) & (1 << 4)) != 0; final Boolean _noFwd = ((input) & (1 << 5)) != 0; final Boolean _noPacketIn = ((input) & (1 << 6)) != 0; return new PortConfigV10(_noFlood, _noFwd, _noPacketIn, _noRecv, _noRecvStp, _noStp, _portDown); } private static PortFeaturesV10 createPortFeatures(long input) { final Boolean _10mbHd = ((input) & (1 << 0)) != 0; final Boolean _10mbFd = ((input) & (1 << 1)) != 0; final Boolean _100mbHd = ((input) & (1 << 2)) != 0; final Boolean _100mbFd = ((input) & (1 << 3)) != 0; final Boolean _1gbHd = ((input) & (1 << 4)) != 0; final Boolean _1gbFd = ((input) & (1 << 5)) != 0; final Boolean _10gbFd = ((input) & (1 << 6)) != 0; final Boolean _copper = ((input) & (1 << 7)) != 0; final Boolean _fiber = ((input) & (1 << 8)) != 0; final Boolean _autoneg = ((input) & (1 << 9)) != 0; final Boolean _pause = ((input) & (1 << 10)) != 0; final Boolean _pauseAsym = ((input) & (1 << 11)) != 0; return new PortFeaturesV10(_100mbFd, _100mbHd, _10gbFd, _10mbFd, _10mbHd, _1gbFd, _1gbHd, _autoneg, _copper, _fiber, _pause, _pauseAsym); } }