/*
* Copyright 2014-present 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.provider.of.flow.impl;
import org.onlab.packet.Ip4Address;
import org.onlab.packet.Ip4Prefix;
import org.onlab.packet.Ip6Address;
import org.onlab.packet.Ip6Prefix;
import org.onlab.packet.VlanId;
import org.onosproject.net.DeviceId;
import org.onosproject.net.OchSignal;
import org.onosproject.net.OduSignalId;
import org.onosproject.net.driver.DefaultDriverData;
import org.onosproject.net.driver.DefaultDriverHandler;
import org.onosproject.net.driver.Driver;
import org.onosproject.net.driver.DriverService;
import org.onosproject.net.flow.FlowRule;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.criteria.ArpHaCriterion;
import org.onosproject.net.flow.criteria.ArpOpCriterion;
import org.onosproject.net.flow.criteria.ArpPaCriterion;
import org.onosproject.net.flow.criteria.Criterion;
import org.onosproject.net.flow.criteria.EthCriterion;
import org.onosproject.net.flow.criteria.EthTypeCriterion;
import org.onosproject.net.flow.criteria.ExtensionCriterion;
import org.onosproject.net.flow.criteria.ExtensionSelector;
import org.onosproject.net.flow.criteria.IPCriterion;
import org.onosproject.net.flow.criteria.IPDscpCriterion;
import org.onosproject.net.flow.criteria.IPEcnCriterion;
import org.onosproject.net.flow.criteria.IPProtocolCriterion;
import org.onosproject.net.flow.criteria.IPv6ExthdrFlagsCriterion;
import org.onosproject.net.flow.criteria.IPv6FlowLabelCriterion;
import org.onosproject.net.flow.criteria.IPv6NDLinkLayerAddressCriterion;
import org.onosproject.net.flow.criteria.IPv6NDTargetAddressCriterion;
import org.onosproject.net.flow.criteria.IcmpCodeCriterion;
import org.onosproject.net.flow.criteria.IcmpTypeCriterion;
import org.onosproject.net.flow.criteria.Icmpv6CodeCriterion;
import org.onosproject.net.flow.criteria.Icmpv6TypeCriterion;
import org.onosproject.net.flow.criteria.MetadataCriterion;
import org.onosproject.net.flow.criteria.MplsBosCriterion;
import org.onosproject.net.flow.criteria.MplsCriterion;
import org.onosproject.net.flow.criteria.OchSignalCriterion;
import org.onosproject.net.flow.criteria.OchSignalTypeCriterion;
import org.onosproject.net.flow.criteria.OduSignalIdCriterion;
import org.onosproject.net.flow.criteria.OduSignalTypeCriterion;
import org.onosproject.net.flow.criteria.PortCriterion;
import org.onosproject.net.flow.criteria.SctpPortCriterion;
import org.onosproject.net.flow.criteria.TcpPortCriterion;
import org.onosproject.net.flow.criteria.TunnelIdCriterion;
import org.onosproject.net.flow.criteria.UdpPortCriterion;
import org.onosproject.net.flow.criteria.VlanIdCriterion;
import org.onosproject.net.flow.criteria.VlanPcpCriterion;
import org.onosproject.openflow.controller.ExtensionSelectorInterpreter;
import org.onosproject.provider.of.flow.util.NoMappingFoundException;
import org.onosproject.provider.of.flow.util.OpenFlowValueMapper;
import org.projectfloodlight.openflow.protocol.OFFactory;
import org.projectfloodlight.openflow.protocol.OFFlowMod;
import org.projectfloodlight.openflow.protocol.match.Match;
import org.projectfloodlight.openflow.protocol.match.MatchField;
import org.projectfloodlight.openflow.protocol.oxm.OFOxm;
import org.projectfloodlight.openflow.types.ArpOpcode;
import org.projectfloodlight.openflow.types.CircuitSignalID;
import org.projectfloodlight.openflow.types.EthType;
import org.projectfloodlight.openflow.types.ICMPv4Code;
import org.projectfloodlight.openflow.types.ICMPv4Type;
import org.projectfloodlight.openflow.types.IPv4Address;
import org.projectfloodlight.openflow.types.IPv6Address;
import org.projectfloodlight.openflow.types.IPv6FlowLabel;
import org.projectfloodlight.openflow.types.IpDscp;
import org.projectfloodlight.openflow.types.IpEcn;
import org.projectfloodlight.openflow.types.IpProtocol;
import org.projectfloodlight.openflow.types.MacAddress;
import org.projectfloodlight.openflow.types.Masked;
import org.projectfloodlight.openflow.types.OFBooleanValue;
import org.projectfloodlight.openflow.types.OFMetadata;
import org.projectfloodlight.openflow.types.OFPort;
import org.projectfloodlight.openflow.types.OFVlanVidMatch;
import org.projectfloodlight.openflow.types.OduSignalID;
import org.projectfloodlight.openflow.types.TransportPort;
import org.projectfloodlight.openflow.types.U16;
import org.projectfloodlight.openflow.types.U32;
import org.projectfloodlight.openflow.types.U64;
import org.projectfloodlight.openflow.types.U8;
import org.projectfloodlight.openflow.types.VlanPcp;
import org.projectfloodlight.openflow.types.VlanVid;
import org.slf4j.Logger;
import java.util.Optional;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Builder for OpenFlow flow mods based on FlowRules.
*/
public abstract class FlowModBuilder {
private final Logger log = getLogger(getClass());
private final OFFactory factory;
private final FlowRule flowRule;
private final TrafficSelector selector;
protected final Long xid;
protected final Optional<DriverService> driverService;
protected final DeviceId deviceId;
/**
* Creates a new flow mod builder.
*
* @param flowRule the flow rule to transform into a flow mod
* @param factory the OpenFlow factory to use to build the flow mod
* @param xid the transaction ID
* @param driverService the device driver service
* @return the new flow mod builder
*/
public static FlowModBuilder builder(FlowRule flowRule,
OFFactory factory,
Optional<Long> xid,
Optional<DriverService> driverService) {
switch (factory.getVersion()) {
case OF_10:
return new FlowModBuilderVer10(flowRule, factory, xid, driverService);
case OF_13:
case OF_14:
return new FlowModBuilderVer13(flowRule, factory, xid, driverService);
default:
throw new UnsupportedOperationException(
"No flow mod builder for protocol version " + factory.getVersion());
}
}
/**
* Constructs a flow mod builder.
*
* @param flowRule the flow rule to transform into a flow mod
* @param factory the OpenFlow factory to use to build the flow mod
* @param driverService the device driver service
* @param xid the transaction ID
*/
protected FlowModBuilder(FlowRule flowRule, OFFactory factory, Optional<Long> xid,
Optional<DriverService> driverService) {
this.factory = factory;
this.flowRule = flowRule;
this.selector = flowRule.selector();
this.xid = xid.orElse(0L);
this.driverService = driverService;
this.deviceId = flowRule.deviceId();
}
/**
* Builds an ADD flow mod.
*
* @return the flow mod
*/
public abstract OFFlowMod buildFlowAdd();
/**
* Builds a MODIFY flow mod.
*
* @return the flow mod
*/
public abstract OFFlowMod buildFlowMod();
/**
* Builds a DELETE flow mod.
*
* @return the flow mod
*/
public abstract OFFlowMod buildFlowDel();
/**
* Builds the match for the flow mod.
*
* @return the match
*/
// CHECKSTYLE IGNORE MethodLength FOR NEXT 300 LINES
protected Match buildMatch() {
Match.Builder mBuilder = factory.buildMatch();
Ip6Address ip6Address;
Ip4Prefix ip4Prefix;
Ip6Prefix ip6Prefix;
EthCriterion ethCriterion;
IPCriterion ipCriterion;
TcpPortCriterion tcpPortCriterion;
UdpPortCriterion udpPortCriterion;
SctpPortCriterion sctpPortCriterion;
IPv6NDLinkLayerAddressCriterion llAddressCriterion;
ArpHaCriterion arpHaCriterion;
ArpPaCriterion arpPaCriterion;
for (Criterion c : selector.criteria()) {
switch (c.type()) {
case IN_PORT:
PortCriterion inPort = (PortCriterion) c;
mBuilder.setExact(MatchField.IN_PORT,
OFPort.of((int) inPort.port().toLong()));
break;
case IN_PHY_PORT:
PortCriterion inPhyPort = (PortCriterion) c;
mBuilder.setExact(MatchField.IN_PORT,
OFPort.of((int) inPhyPort.port().toLong()));
break;
case METADATA:
MetadataCriterion metadata = (MetadataCriterion) c;
mBuilder.setExact(MatchField.METADATA,
OFMetadata.ofRaw(metadata.metadata()));
break;
case ETH_DST:
ethCriterion = (EthCriterion) c;
mBuilder.setExact(MatchField.ETH_DST,
MacAddress.of(ethCriterion.mac().toLong()));
break;
case ETH_DST_MASKED:
ethCriterion = (EthCriterion) c;
mBuilder.setMasked(MatchField.ETH_DST,
MacAddress.of(ethCriterion.mac().toLong()),
MacAddress.of(ethCriterion.mask().toLong()));
break;
case ETH_SRC:
ethCriterion = (EthCriterion) c;
mBuilder.setExact(MatchField.ETH_SRC,
MacAddress.of(ethCriterion.mac().toLong()));
break;
case ETH_SRC_MASKED:
ethCriterion = (EthCriterion) c;
mBuilder.setMasked(MatchField.ETH_SRC,
MacAddress.of(ethCriterion.mac().toLong()),
MacAddress.of(ethCriterion.mask().toLong()));
break;
case ETH_TYPE:
EthTypeCriterion ethType = (EthTypeCriterion) c;
mBuilder.setExact(MatchField.ETH_TYPE, EthType.of(ethType.ethType().toShort()));
break;
case VLAN_VID:
VlanIdCriterion vid = (VlanIdCriterion) c;
if (vid.vlanId().equals(VlanId.ANY)) {
mBuilder.setMasked(MatchField.VLAN_VID, OFVlanVidMatch.PRESENT,
OFVlanVidMatch.PRESENT);
} else if (vid.vlanId().equals(VlanId.NONE)) {
mBuilder.setExact(MatchField.VLAN_VID, OFVlanVidMatch.NONE);
} else {
mBuilder.setExact(MatchField.VLAN_VID,
OFVlanVidMatch.ofVlanVid(VlanVid.ofVlan(vid.vlanId().toShort())));
}
break;
case VLAN_PCP:
VlanPcpCriterion vpcp = (VlanPcpCriterion) c;
mBuilder.setExact(MatchField.VLAN_PCP, VlanPcp.of(vpcp.priority()));
break;
case IP_DSCP:
IPDscpCriterion ipDscpCriterion = (IPDscpCriterion) c;
mBuilder.setExact(MatchField.IP_DSCP,
IpDscp.of(ipDscpCriterion.ipDscp()));
break;
case IP_ECN:
IPEcnCriterion ipEcnCriterion = (IPEcnCriterion) c;
mBuilder.setExact(MatchField.IP_ECN,
IpEcn.of(ipEcnCriterion.ipEcn()));
break;
case IP_PROTO:
IPProtocolCriterion p = (IPProtocolCriterion) c;
mBuilder.setExact(MatchField.IP_PROTO, IpProtocol.of(p.protocol()));
break;
case IPV4_SRC:
ipCriterion = (IPCriterion) c;
ip4Prefix = ipCriterion.ip().getIp4Prefix();
if (ip4Prefix.prefixLength() != Ip4Prefix.MAX_MASK_LENGTH) {
Ip4Address maskAddr =
Ip4Address.makeMaskPrefix(ip4Prefix.prefixLength());
Masked<IPv4Address> maskedIp =
Masked.of(IPv4Address.of(ip4Prefix.address().toInt()),
IPv4Address.of(maskAddr.toInt()));
mBuilder.setMasked(MatchField.IPV4_SRC, maskedIp);
} else {
mBuilder.setExact(MatchField.IPV4_SRC,
IPv4Address.of(ip4Prefix.address().toInt()));
}
break;
case IPV4_DST:
ipCriterion = (IPCriterion) c;
ip4Prefix = ipCriterion.ip().getIp4Prefix();
if (ip4Prefix.prefixLength() != Ip4Prefix.MAX_MASK_LENGTH) {
Ip4Address maskAddr =
Ip4Address.makeMaskPrefix(ip4Prefix.prefixLength());
Masked<IPv4Address> maskedIp =
Masked.of(IPv4Address.of(ip4Prefix.address().toInt()),
IPv4Address.of(maskAddr.toInt()));
mBuilder.setMasked(MatchField.IPV4_DST, maskedIp);
} else {
mBuilder.setExact(MatchField.IPV4_DST,
IPv4Address.of(ip4Prefix.address().toInt()));
}
break;
case TCP_SRC:
tcpPortCriterion = (TcpPortCriterion) c;
mBuilder.setExact(MatchField.TCP_SRC,
TransportPort.of(tcpPortCriterion.tcpPort().toInt()));
break;
case TCP_SRC_MASKED:
tcpPortCriterion = (TcpPortCriterion) c;
mBuilder.setMasked(MatchField.TCP_SRC,
TransportPort.of(tcpPortCriterion.tcpPort().toInt()),
TransportPort.of(tcpPortCriterion.mask().toInt()));
break;
case TCP_DST:
tcpPortCriterion = (TcpPortCriterion) c;
mBuilder.setExact(MatchField.TCP_DST,
TransportPort.of(tcpPortCriterion.tcpPort().toInt()));
break;
case TCP_DST_MASKED:
tcpPortCriterion = (TcpPortCriterion) c;
mBuilder.setMasked(MatchField.TCP_DST,
TransportPort.of(tcpPortCriterion.tcpPort().toInt()),
TransportPort.of(tcpPortCriterion.mask().toInt()));
break;
case UDP_SRC:
udpPortCriterion = (UdpPortCriterion) c;
mBuilder.setExact(MatchField.UDP_SRC,
TransportPort.of(udpPortCriterion.udpPort().toInt()));
break;
case UDP_SRC_MASKED:
udpPortCriterion = (UdpPortCriterion) c;
mBuilder.setMasked(MatchField.UDP_SRC,
TransportPort.of(udpPortCriterion.udpPort().toInt()),
TransportPort.of(udpPortCriterion.mask().toInt()));
break;
case UDP_DST:
udpPortCriterion = (UdpPortCriterion) c;
mBuilder.setExact(MatchField.UDP_DST,
TransportPort.of(udpPortCriterion.udpPort().toInt()));
break;
case UDP_DST_MASKED:
udpPortCriterion = (UdpPortCriterion) c;
mBuilder.setMasked(MatchField.UDP_DST,
TransportPort.of(udpPortCriterion.udpPort().toInt()),
TransportPort.of(udpPortCriterion.mask().toInt()));
break;
case SCTP_SRC:
sctpPortCriterion = (SctpPortCriterion) c;
mBuilder.setExact(MatchField.SCTP_SRC,
TransportPort.of(sctpPortCriterion.sctpPort().toInt()));
break;
case SCTP_SRC_MASKED:
sctpPortCriterion = (SctpPortCriterion) c;
mBuilder.setMasked(MatchField.SCTP_SRC,
TransportPort.of(sctpPortCriterion.sctpPort().toInt()),
TransportPort.of(sctpPortCriterion.mask().toInt()));
break;
case SCTP_DST:
sctpPortCriterion = (SctpPortCriterion) c;
mBuilder.setExact(MatchField.SCTP_DST,
TransportPort.of(sctpPortCriterion.sctpPort().toInt()));
break;
case SCTP_DST_MASKED:
sctpPortCriterion = (SctpPortCriterion) c;
mBuilder.setMasked(MatchField.SCTP_DST,
TransportPort.of(sctpPortCriterion.sctpPort().toInt()),
TransportPort.of(sctpPortCriterion.mask().toInt()));
break;
case ICMPV4_TYPE:
IcmpTypeCriterion icmpType = (IcmpTypeCriterion) c;
mBuilder.setExact(MatchField.ICMPV4_TYPE,
ICMPv4Type.of(icmpType.icmpType()));
break;
case ICMPV4_CODE:
IcmpCodeCriterion icmpCode = (IcmpCodeCriterion) c;
mBuilder.setExact(MatchField.ICMPV4_CODE,
ICMPv4Code.of(icmpCode.icmpCode()));
break;
case IPV6_SRC:
ipCriterion = (IPCriterion) c;
ip6Prefix = ipCriterion.ip().getIp6Prefix();
if (ip6Prefix.prefixLength() != Ip6Prefix.MAX_MASK_LENGTH) {
Ip6Address maskAddr =
Ip6Address.makeMaskPrefix(ip6Prefix.prefixLength());
Masked<IPv6Address> maskedIp =
Masked.of(IPv6Address.of(ip6Prefix.address().toString()),
IPv6Address.of(maskAddr.toString()));
mBuilder.setMasked(MatchField.IPV6_SRC, maskedIp);
} else {
mBuilder.setExact(MatchField.IPV6_SRC,
IPv6Address.of(ip6Prefix.address().toString()));
}
break;
case IPV6_DST:
ipCriterion = (IPCriterion) c;
ip6Prefix = ipCriterion.ip().getIp6Prefix();
if (ip6Prefix.prefixLength() != Ip6Prefix.MAX_MASK_LENGTH) {
Ip6Address maskAddr =
Ip6Address.makeMaskPrefix(ip6Prefix.prefixLength());
Masked<IPv6Address> maskedIp =
Masked.of(IPv6Address.of(ip6Prefix.address().toString()),
IPv6Address.of(maskAddr.toString()));
mBuilder.setMasked(MatchField.IPV6_DST, maskedIp);
} else {
mBuilder.setExact(MatchField.IPV6_DST,
IPv6Address.of(ip6Prefix.address().toString()));
}
break;
case IPV6_FLABEL:
IPv6FlowLabelCriterion flowLabelCriterion =
(IPv6FlowLabelCriterion) c;
mBuilder.setExact(MatchField.IPV6_FLABEL,
IPv6FlowLabel.of(flowLabelCriterion.flowLabel()));
break;
case ICMPV6_TYPE:
Icmpv6TypeCriterion icmpv6Type = (Icmpv6TypeCriterion) c;
mBuilder.setExact(MatchField.ICMPV6_TYPE,
U8.of(icmpv6Type.icmpv6Type()));
break;
case ICMPV6_CODE:
Icmpv6CodeCriterion icmpv6Code = (Icmpv6CodeCriterion) c;
mBuilder.setExact(MatchField.ICMPV6_CODE,
U8.of(icmpv6Code.icmpv6Code()));
break;
case IPV6_ND_TARGET:
IPv6NDTargetAddressCriterion targetAddressCriterion =
(IPv6NDTargetAddressCriterion) c;
ip6Address = targetAddressCriterion.targetAddress();
mBuilder.setExact(MatchField.IPV6_ND_TARGET,
IPv6Address.of(ip6Address.toOctets()));
break;
case IPV6_ND_SLL:
llAddressCriterion =
(IPv6NDLinkLayerAddressCriterion) c;
mBuilder.setExact(MatchField.IPV6_ND_SLL,
MacAddress.of(llAddressCriterion.mac().toLong()));
break;
case IPV6_ND_TLL:
llAddressCriterion =
(IPv6NDLinkLayerAddressCriterion) c;
mBuilder.setExact(MatchField.IPV6_ND_TLL,
MacAddress.of(llAddressCriterion.mac().toLong()));
break;
case MPLS_LABEL:
MplsCriterion mp = (MplsCriterion) c;
mBuilder.setExact(MatchField.MPLS_LABEL, U32.of(mp.label().toInt()));
break;
case IPV6_EXTHDR:
IPv6ExthdrFlagsCriterion exthdrFlagsCriterion =
(IPv6ExthdrFlagsCriterion) c;
mBuilder.setExact(MatchField.IPV6_EXTHDR,
U16.of(exthdrFlagsCriterion.exthdrFlags()));
break;
case OCH_SIGID:
try {
OchSignalCriterion ochSignalCriterion = (OchSignalCriterion) c;
OchSignal signal = ochSignalCriterion.lambda();
byte gridType = OpenFlowValueMapper.lookupGridType(signal.gridType());
byte channelSpacing = OpenFlowValueMapper.lookupChannelSpacing(signal.channelSpacing());
mBuilder.setExact(MatchField.EXP_OCH_SIG_ID,
new CircuitSignalID(gridType, channelSpacing,
(short) signal.spacingMultiplier(), (short) signal.slotGranularity()));
} catch (NoMappingFoundException e) {
log.warn(e.getMessage());
}
break;
case OCH_SIGTYPE:
try {
OchSignalTypeCriterion sc = (OchSignalTypeCriterion) c;
byte signalType = OpenFlowValueMapper.lookupOchSignalType(sc.signalType());
mBuilder.setExact(MatchField.EXP_OCH_SIGTYPE, U8.of(signalType));
} catch (NoMappingFoundException e) {
log.warn(e.getMessage());
}
break;
case ODU_SIGID:
OduSignalIdCriterion oduSignalIdCriterion = (OduSignalIdCriterion) c;
OduSignalId oduSignalId = oduSignalIdCriterion.oduSignalId();
mBuilder.setExact(MatchField.EXP_ODU_SIG_ID,
new OduSignalID((short) oduSignalId.tributaryPortNumber(),
(short) oduSignalId.tributarySlotLength(),
oduSignalId.tributarySlotBitmap()));
break;
case ODU_SIGTYPE:
try {
OduSignalTypeCriterion oduSignalTypeCriterion = (OduSignalTypeCriterion) c;
byte oduSigType = OpenFlowValueMapper.lookupOduSignalType(oduSignalTypeCriterion.signalType());
mBuilder.setExact(MatchField.EXP_ODU_SIGTYPE, U8.of(oduSigType));
} catch (NoMappingFoundException e) {
log.warn(e.getMessage());
}
break;
case TUNNEL_ID:
TunnelIdCriterion tunnelId = (TunnelIdCriterion) c;
mBuilder.setExact(MatchField.TUNNEL_ID,
U64.of(tunnelId.tunnelId()));
break;
case MPLS_BOS:
MplsBosCriterion mplsBos = (MplsBosCriterion) c;
mBuilder.setExact(MatchField.MPLS_BOS,
mplsBos.mplsBos() ? OFBooleanValue.TRUE
: OFBooleanValue.FALSE);
break;
case ARP_OP:
ArpOpCriterion arpOp = (ArpOpCriterion) c;
mBuilder.setExact(MatchField.ARP_OP,
ArpOpcode.of(arpOp.arpOp()));
break;
case ARP_SHA:
arpHaCriterion = (ArpHaCriterion) c;
mBuilder.setExact(MatchField.ARP_SHA,
MacAddress.of(arpHaCriterion.mac().toLong()));
break;
case ARP_SPA:
arpPaCriterion = (ArpPaCriterion) c;
mBuilder.setExact(MatchField.ARP_SPA,
IPv4Address.of(arpPaCriterion.ip().toInt()));
break;
case ARP_THA:
arpHaCriterion = (ArpHaCriterion) c;
mBuilder.setExact(MatchField.ARP_THA,
MacAddress.of(arpHaCriterion.mac().toLong()));
break;
case ARP_TPA:
arpPaCriterion = (ArpPaCriterion) c;
mBuilder.setExact(MatchField.ARP_TPA,
IPv4Address.of(arpPaCriterion.ip().toInt()));
break;
case EXTENSION:
ExtensionCriterion extensionCriterion = (ExtensionCriterion) c;
OFOxm oxm = buildExtensionOxm(extensionCriterion.extensionSelector());
if (oxm == null) {
log.warn("Unable to build extension selector");
break;
}
if (oxm.isMasked()) {
mBuilder.setMasked(oxm.getMatchField(), oxm.getValue(), oxm.getMask());
} else {
mBuilder.setExact(oxm.getMatchField(), oxm.getValue());
}
break;
case MPLS_TC:
case PBB_ISID:
// TODO: need to implement PBB-ISID case when OpenFlowJ is ready
default:
log.warn("Match type {} not yet implemented.", c.type());
}
}
return mBuilder.build();
}
/**
* Returns the flow rule for this builder.
*
* @return the flow rule
*/
protected FlowRule flowRule() {
return flowRule;
}
/**
* Returns the factory used for building OpenFlow constructs.
*
* @return the factory
*/
protected OFFactory factory() {
return factory;
}
private OFOxm buildExtensionOxm(ExtensionSelector extension) {
if (!driverService.isPresent()) {
log.error("No driver service present");
return null;
}
Driver driver = driverService.get().getDriver(deviceId);
if (driver.hasBehaviour(ExtensionSelectorInterpreter.class)) {
DefaultDriverHandler handler =
new DefaultDriverHandler(new DefaultDriverData(driver, deviceId));
ExtensionSelectorInterpreter interpreter = handler.behaviour(ExtensionSelectorInterpreter.class);
return interpreter.mapSelector(factory(), extension);
}
return null;
}
}