| /* |
| * Copyright 2018-present Open Networking Foundation |
| * |
| * 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. |
| * |
| * This work was partially supported by EC H2020 project METRO-HAUL (761727). |
| */ |
| |
| package org.onosproject.drivers.odtn.impl; |
| |
| import org.onlab.util.Frequency; |
| import org.onosproject.net.OchSignal; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.flow.FlowRule; |
| import org.onosproject.net.flow.criteria.Criterion; |
| import org.onosproject.net.flow.criteria.OchSignalCriterion; |
| import org.onosproject.net.flow.criteria.PortCriterion; |
| import org.onosproject.net.flow.instructions.Instruction; |
| import org.onosproject.net.flow.instructions.Instructions; |
| import org.onosproject.net.flow.instructions.L0ModificationInstruction; |
| |
| /** |
| * Class that parses a FlowRule as passed by ONOS and |
| * extracts info such as the OchSignal, Portnumber. |
| * |
| * |
| * We iterate on the Selector. A Selector based on OCh is Rx |
| */ |
| public class FlowRuleParser { |
| |
| public FlowRuleParser(FlowRule r) { |
| for (Criterion c : r.selector().criteria()) { |
| if (c instanceof OchSignalCriterion) { |
| rx = true; |
| ochSignal = ((OchSignalCriterion) c).lambda(); |
| } |
| if (c instanceof PortCriterion) { |
| portNumber = ((PortCriterion) c).port(); |
| } |
| } |
| |
| for (Instruction i : r.treatment().immediate()) { |
| if (i instanceof |
| L0ModificationInstruction.ModOchSignalInstruction) { |
| ochSignal = |
| ((L0ModificationInstruction.ModOchSignalInstruction) i) |
| .lambda(); |
| } |
| if (i instanceof Instructions.OutputInstruction) { |
| portNumber = ((Instructions.OutputInstruction) i).port(); |
| } |
| } |
| } |
| |
| public boolean isReceiver() { |
| return rx; |
| } |
| |
| public OchSignal getOchsignal() { |
| return ochSignal; |
| } |
| |
| public PortNumber getPortNumber() { |
| return portNumber; |
| } |
| |
| public Frequency getCentralFrequency() { |
| return ochSignal.centralFrequency(); |
| } |
| |
| private boolean rx = false; |
| private OchSignal ochSignal = null; |
| private PortNumber portNumber = null; |
| } |