Marc De Leenheer | c662d32 | 2016-02-18 16:05:10 -0800 | [diff] [blame] | 1 | /* |
Marc De Leenheer | 40a544b | 2017-04-25 14:16:02 -0700 | [diff] [blame] | 2 | * Copyright 2017-present Open Networking Laboratory |
Marc De Leenheer | c662d32 | 2016-02-18 16:05:10 -0800 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
Marc De Leenheer | 40a544b | 2017-04-25 14:16:02 -0700 | [diff] [blame] | 16 | package org.onosproject.driver.optical.flowrule; |
Marc De Leenheer | c662d32 | 2016-02-18 16:05:10 -0800 | [diff] [blame] | 17 | |
| 18 | import org.onosproject.net.OchSignal; |
| 19 | import org.onosproject.net.PortNumber; |
| 20 | import org.onosproject.net.flow.DefaultFlowRule; |
| 21 | import org.onosproject.net.flow.FlowRule; |
| 22 | import org.onosproject.net.flow.criteria.Criterion; |
| 23 | import org.onosproject.net.flow.criteria.OchSignalCriterion; |
| 24 | import org.onosproject.net.flow.criteria.OchSignalTypeCriterion; |
| 25 | import org.onosproject.net.flow.criteria.PortCriterion; |
| 26 | import org.onosproject.net.flow.instructions.Instruction; |
| 27 | import org.onosproject.net.flow.instructions.Instructions; |
| 28 | |
| 29 | import java.util.List; |
| 30 | import java.util.Set; |
| 31 | |
| 32 | import static com.google.common.base.Preconditions.checkArgument; |
| 33 | |
| 34 | /** |
| 35 | * Cross connect abstraction based on a flow rule. |
| 36 | */ |
| 37 | public class CrossConnectFlowRule extends DefaultFlowRule implements CrossConnect { |
| 38 | private PortNumber addDrop; |
| 39 | private OchSignal ochSignal; |
| 40 | private boolean isAddRule; |
| 41 | |
| 42 | public CrossConnectFlowRule(FlowRule rule, List<PortNumber> linePorts) { |
| 43 | super(rule); |
| 44 | |
| 45 | Set<Criterion> criteria = rule.selector().criteria(); |
| 46 | List<Instruction> instructions = rule.treatment().immediate(); |
| 47 | |
| 48 | // Proper cross connect has criteria for input port, OChSignal and OCh signal type. |
| 49 | // Instruction must be output to port. |
| 50 | checkArgument(criteria.size() == 3, "Wrong size of flow rule criteria for cross connect."); |
| 51 | checkArgument(instructions.size() == 1, "Wrong size of flow rule instructions for cross connect."); |
| 52 | // FIXME: Ensure criteria has exactly one of each match type |
| 53 | criteria.forEach( |
| 54 | c -> checkArgument(c instanceof OchSignalCriterion || |
| 55 | c instanceof OchSignalTypeCriterion || |
| 56 | c instanceof PortCriterion, |
| 57 | "Incompatible flow rule criteria for cross connect: " + criteria |
| 58 | ) |
| 59 | ); |
| 60 | checkArgument(instructions.get(0).type() == Instruction.Type.OUTPUT, |
| 61 | "Incompatible flow rule instructions for cross connect: " + instructions); |
| 62 | |
| 63 | ochSignal = criteria.stream() |
| 64 | .filter(c -> c instanceof OchSignalCriterion) |
| 65 | .map(c -> ((OchSignalCriterion) c).lambda()) |
| 66 | .findAny() |
| 67 | .orElse(null); |
| 68 | |
| 69 | // Add or drop rule? |
| 70 | Instructions.OutputInstruction outInstruction = (Instructions.OutputInstruction) instructions.get(0); |
| 71 | if (linePorts.contains(outInstruction.port())) { |
| 72 | addDrop = criteria.stream() |
| 73 | .filter(c -> c instanceof PortCriterion) |
| 74 | .map(c -> ((PortCriterion) c).port()) |
| 75 | .findAny() |
| 76 | .orElse(null); |
| 77 | isAddRule = true; |
| 78 | } else { |
| 79 | addDrop = outInstruction.port(); |
| 80 | isAddRule = false; |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | @Override |
| 85 | public PortNumber addDrop() { |
| 86 | return addDrop; |
| 87 | } |
| 88 | |
| 89 | @Override |
| 90 | public OchSignal ochSignal() { |
| 91 | return ochSignal; |
| 92 | } |
| 93 | |
| 94 | @Override |
| 95 | public boolean isAddRule() { |
| 96 | return isAddRule; |
| 97 | } |
| 98 | } |