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/*
* 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.codec.impl;
import static org.onlab.util.Tools.nullIsIllegal;
import org.onlab.packet.IpAddress;
import org.onlab.packet.MacAddress;
import org.onlab.packet.MplsLabel;
import org.onlab.packet.TpPort;
import org.onlab.packet.VlanId;
import org.onlab.util.HexString;
import org.onosproject.net.ChannelSpacing;
import org.onosproject.net.GridType;
import org.onosproject.net.Lambda;
import org.onosproject.net.OchSignal;
import org.onosproject.net.OduSignalId;
import org.onosproject.net.PortNumber;
import org.onosproject.net.flow.instructions.Instruction;
import org.onosproject.net.flow.instructions.Instructions;
import org.onosproject.net.flow.instructions.L0ModificationInstruction;
import org.onosproject.net.flow.instructions.L1ModificationInstruction;
import org.onosproject.net.flow.instructions.L2ModificationInstruction;
import org.onosproject.net.flow.instructions.L3ModificationInstruction;
import org.onosproject.net.flow.instructions.L4ModificationInstruction;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
* Decoding portion of the instruction codec.
*/
public final class DecodeInstructionCodecHelper {
private final ObjectNode json;
/**
* Creates a decode instruction codec object.
*
* @param json JSON object to decode
*/
public DecodeInstructionCodecHelper(ObjectNode json) {
this.json = json;
}
/**
* Decodes a Layer 2 instruction.
*
* @return instruction object decoded from the JSON
* @throws IllegalArgumentException if the JSON is invalid
*/
private Instruction decodeL2() {
String subType = json.get(InstructionCodec.SUBTYPE).asText();
if (subType.equals(L2ModificationInstruction.L2SubType.ETH_SRC.name())) {
String mac = nullIsIllegal(json.get(InstructionCodec.MAC),
InstructionCodec.MAC + InstructionCodec.MISSING_MEMBER_MESSAGE).asText();
return Instructions.modL2Src(MacAddress.valueOf(mac));
} else if (subType.equals(L2ModificationInstruction.L2SubType.ETH_DST.name())) {
String mac = nullIsIllegal(json.get(InstructionCodec.MAC),
InstructionCodec.MAC + InstructionCodec.MISSING_MEMBER_MESSAGE).asText();
return Instructions.modL2Dst(MacAddress.valueOf(mac));
} else if (subType.equals(L2ModificationInstruction.L2SubType.VLAN_ID.name())) {
short vlanId = (short) nullIsIllegal(json.get(InstructionCodec.VLAN_ID),
InstructionCodec.VLAN_ID + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt();
return Instructions.modVlanId(VlanId.vlanId(vlanId));
} else if (subType.equals(L2ModificationInstruction.L2SubType.VLAN_PCP.name())) {
byte vlanPcp = (byte) nullIsIllegal(json.get(InstructionCodec.VLAN_PCP),
InstructionCodec.VLAN_PCP + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt();
return Instructions.modVlanPcp(vlanPcp);
} else if (subType.equals(L2ModificationInstruction.L2SubType.MPLS_LABEL.name())) {
int label = nullIsIllegal(json.get(InstructionCodec.MPLS_LABEL),
InstructionCodec.MPLS_LABEL + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt();
return Instructions.modMplsLabel(MplsLabel.mplsLabel(label));
} else if (subType.equals(L2ModificationInstruction.L2SubType.MPLS_PUSH.name())) {
return Instructions.pushMpls();
} else if (subType.equals(L2ModificationInstruction.L2SubType.MPLS_POP.name())) {
return Instructions.popMpls();
} else if (subType.equals(L2ModificationInstruction.L2SubType.DEC_MPLS_TTL.name())) {
return Instructions.decMplsTtl();
} else if (subType.equals(L2ModificationInstruction.L2SubType.VLAN_POP.name())) {
return Instructions.popVlan();
} else if (subType.equals(L2ModificationInstruction.L2SubType.VLAN_PUSH.name())) {
return Instructions.pushVlan();
} else if (subType.equals(L2ModificationInstruction.L2SubType.TUNNEL_ID.name())) {
long tunnelId = nullIsIllegal(json.get(InstructionCodec.TUNNEL_ID),
InstructionCodec.TUNNEL_ID + InstructionCodec.MISSING_MEMBER_MESSAGE).asLong();
return Instructions.modTunnelId(tunnelId);
}
throw new IllegalArgumentException("L2 Instruction subtype "
+ subType + " is not supported");
}
/**
* Decodes a Layer 3 instruction.
*
* @return instruction object decoded from the JSON
* @throws IllegalArgumentException if the JSON is invalid
*/
private Instruction decodeL3() {
String subType = json.get(InstructionCodec.SUBTYPE).asText();
if (subType.equals(L3ModificationInstruction.L3SubType.IPV4_SRC.name())) {
IpAddress ip = IpAddress.valueOf(nullIsIllegal(json.get(InstructionCodec.IP),
InstructionCodec.IP + InstructionCodec.MISSING_MEMBER_MESSAGE).asText());
return Instructions.modL3Src(ip);
} else if (subType.equals(L3ModificationInstruction.L3SubType.IPV4_DST.name())) {
IpAddress ip = IpAddress.valueOf(nullIsIllegal(json.get(InstructionCodec.IP),
InstructionCodec.IP + InstructionCodec.MISSING_MEMBER_MESSAGE).asText());
return Instructions.modL3Dst(ip);
} else if (subType.equals(L3ModificationInstruction.L3SubType.IPV6_SRC.name())) {
IpAddress ip = IpAddress.valueOf(nullIsIllegal(json.get(InstructionCodec.IP),
InstructionCodec.IP + InstructionCodec.MISSING_MEMBER_MESSAGE).asText());
return Instructions.modL3IPv6Src(ip);
} else if (subType.equals(L3ModificationInstruction.L3SubType.IPV6_DST.name())) {
IpAddress ip = IpAddress.valueOf(nullIsIllegal(json.get(InstructionCodec.IP),
InstructionCodec.IP + InstructionCodec.MISSING_MEMBER_MESSAGE).asText());
return Instructions.modL3IPv6Dst(ip);
} else if (subType.equals(L3ModificationInstruction.L3SubType.IPV6_FLABEL.name())) {
int flowLabel = nullIsIllegal(json.get(InstructionCodec.FLOW_LABEL),
InstructionCodec.FLOW_LABEL + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt();
return Instructions.modL3IPv6FlowLabel(flowLabel);
}
throw new IllegalArgumentException("L3 Instruction subtype "
+ subType + " is not supported");
}
/**
* Decodes a Layer 0 instruction.
*
* @return instruction object decoded from the JSON
* @throws IllegalArgumentException if the JSON is invalid
*/
private Instruction decodeL0() {
String subType = json.get(InstructionCodec.SUBTYPE).asText();
if (subType.equals(L0ModificationInstruction.L0SubType.LAMBDA.name())) {
int lambda = nullIsIllegal(json.get(InstructionCodec.LAMBDA),
InstructionCodec.LAMBDA + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt();
return Instructions.modL0Lambda(Lambda.indexedLambda(lambda));
} else if (subType.equals(L0ModificationInstruction.L0SubType.OCH.name())) {
String gridTypeString = nullIsIllegal(json.get(InstructionCodec.GRID_TYPE),
InstructionCodec.GRID_TYPE + InstructionCodec.MISSING_MEMBER_MESSAGE).asText();
GridType gridType = GridType.valueOf(gridTypeString);
if (gridType == null) {
throw new IllegalArgumentException("Unknown grid type "
+ gridTypeString);
}
String channelSpacingString = nullIsIllegal(json.get(InstructionCodec.CHANNEL_SPACING),
InstructionCodec.CHANNEL_SPACING + InstructionCodec.MISSING_MEMBER_MESSAGE).asText();
ChannelSpacing channelSpacing = ChannelSpacing.valueOf(channelSpacingString);
if (channelSpacing == null) {
throw new IllegalArgumentException("Unknown channel spacing "
+ channelSpacingString);
}
int spacingMultiplier = nullIsIllegal(json.get(InstructionCodec.SPACING_MULTIPLIER),
InstructionCodec.SPACING_MULTIPLIER + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt();
int slotGranularity = nullIsIllegal(json.get(InstructionCodec.SLOT_GRANULARITY),
InstructionCodec.SLOT_GRANULARITY + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt();
return Instructions.modL0Lambda(new OchSignal(gridType, channelSpacing,
spacingMultiplier, slotGranularity));
}
throw new IllegalArgumentException("L0 Instruction subtype "
+ subType + " is not supported");
}
/**
* Decodes a Layer 1 instruction.
*
* @return instruction object decoded from the JSON
* @throws IllegalArgumentException if the JSON is invalid
*/
private Instruction decodeL1() {
String subType = json.get(InstructionCodec.SUBTYPE).asText();
if (subType.equals(L1ModificationInstruction.L1SubType.ODU_SIGID.name())) {
int tributaryPortNumber = nullIsIllegal(json.get(InstructionCodec.TRIBUTARY_PORT_NUMBER),
InstructionCodec.TRIBUTARY_PORT_NUMBER + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt();
int tributarySlotLen = nullIsIllegal(json.get(InstructionCodec.TRIBUTARY_SLOT_LEN),
InstructionCodec.TRIBUTARY_SLOT_LEN + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt();
byte[] tributarySlotBitmap = null;
tributarySlotBitmap = HexString.fromHexString(
nullIsIllegal(json.get(InstructionCodec.TRIBUTARY_SLOT_BITMAP),
InstructionCodec.TRIBUTARY_SLOT_BITMAP + InstructionCodec.MISSING_MEMBER_MESSAGE).asText());
return Instructions.modL1OduSignalId(OduSignalId.oduSignalId(tributaryPortNumber, tributarySlotLen,
tributarySlotBitmap));
}
throw new IllegalArgumentException("L1 Instruction subtype "
+ subType + " is not supported");
}
/**
* Decodes a Layer 4 instruction.
*
* @return instruction object decoded from the JSON
* @throws IllegalArgumentException if the JSON is invalid
*/
private Instruction decodeL4() {
String subType = json.get(InstructionCodec.SUBTYPE).asText();
if (subType.equals(L4ModificationInstruction.L4SubType.TCP_DST.name())) {
TpPort tcpPort = TpPort.tpPort(nullIsIllegal(json.get(InstructionCodec.TCP_PORT),
InstructionCodec.TCP_PORT + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt());
return Instructions.modTcpDst(tcpPort);
} else if (subType.equals(L4ModificationInstruction.L4SubType.TCP_SRC.name())) {
TpPort tcpPort = TpPort.tpPort(nullIsIllegal(json.get(InstructionCodec.TCP_PORT),
InstructionCodec.TCP_PORT + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt());
return Instructions.modTcpSrc(tcpPort);
} else if (subType.equals(L4ModificationInstruction.L4SubType.UDP_DST.name())) {
TpPort udpPort = TpPort.tpPort(nullIsIllegal(json.get(InstructionCodec.UDP_PORT),
InstructionCodec.UDP_PORT + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt());
return Instructions.modUdpDst(udpPort);
} else if (subType.equals(L4ModificationInstruction.L4SubType.UDP_SRC.name())) {
TpPort udpPort = TpPort.tpPort(nullIsIllegal(json.get(InstructionCodec.UDP_PORT),
InstructionCodec.UDP_PORT + InstructionCodec.MISSING_MEMBER_MESSAGE).asInt());
return Instructions.modUdpSrc(udpPort);
}
throw new IllegalArgumentException("L4 Instruction subtype "
+ subType + " is not supported");
}
/**
* Decodes the JSON into an instruction object.
*
* @return Criterion object
* @throws IllegalArgumentException if the JSON is invalid
*/
public Instruction decode() {
String type = json.get(InstructionCodec.TYPE).asText();
if (type.equals(Instruction.Type.OUTPUT.name())) {
PortNumber portNumber =
PortNumber.portNumber(nullIsIllegal(json.get(InstructionCodec.PORT),
InstructionCodec.PORT + InstructionCodec.MISSING_MEMBER_MESSAGE).asLong());
return Instructions.createOutput(portNumber);
} else if (type.equals(Instruction.Type.DROP.name())) {
return Instructions.createDrop();
} else if (type.equals(Instruction.Type.L0MODIFICATION.name())) {
return decodeL0();
} else if (type.equals(Instruction.Type.L1MODIFICATION.name())) {
return decodeL1();
} else if (type.equals(Instruction.Type.L2MODIFICATION.name())) {
return decodeL2();
} else if (type.equals(Instruction.Type.L3MODIFICATION.name())) {
return decodeL3();
} else if (type.equals(Instruction.Type.L4MODIFICATION.name())) {
return decodeL4();
}
throw new IllegalArgumentException("Instruction type "
+ type + " is not supported");
}
}
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