Toshio Koide | b0d8624 | 2014-08-28 16:05:30 -0700 | [diff] [blame] | 1 | package net.onrc.onos.core.flowmanager; |
| 2 | |
| 3 | import static com.google.common.base.Verify.verify; |
| 4 | import static com.google.common.base.Verify.verifyNotNull; |
| 5 | |
| 6 | import java.util.Arrays; |
| 7 | import java.util.List; |
| 8 | |
| 9 | import net.onrc.onos.api.batchoperation.BatchOperationEntry; |
| 10 | import net.onrc.onos.api.flowmanager.Flow; |
| 11 | import net.onrc.onos.api.flowmanager.FlowBatchId; |
| 12 | import net.onrc.onos.api.flowmanager.FlowBatchOperation; |
| 13 | import net.onrc.onos.api.flowmanager.FlowBatchOperation.Operator; |
| 14 | import net.onrc.onos.api.flowmanager.FlowBatchState; |
| 15 | import net.onrc.onos.core.matchaction.MatchActionId; |
| 16 | import net.onrc.onos.core.matchaction.MatchActionOperationEntry; |
| 17 | import net.onrc.onos.core.matchaction.MatchActionOperations; |
| 18 | import net.onrc.onos.core.matchaction.MatchActionOperationsId; |
| 19 | import net.onrc.onos.core.matchaction.MatchActionService; |
| 20 | import net.onrc.onos.core.util.IdGenerator; |
| 21 | |
| 22 | /** |
| 23 | * Executes {@link FlowBatchOperation}. |
| 24 | * <p> |
| 25 | * This class compiles pairs of {@link Flow} and ADD/REMOVE operation to a list |
| 26 | * of a set of match-action operations. |
| 27 | */ |
| 28 | class FlowBatchOperationExecutor implements FlowBatchMapEventListener { |
| 29 | private final FlowBatchMap flowBatchMap; |
| 30 | // TODO: ADD later: private final FlowMap flowMap; |
| 31 | private final MatchActionService matchActionService; |
| 32 | private IdGenerator<MatchActionId> maIdGenerator; |
| 33 | private IdGenerator<MatchActionOperationsId> maoIdGenerator; |
| 34 | |
| 35 | /** |
| 36 | * Creates {@link FlowBatchOperationExecutor} instance. |
| 37 | */ |
| 38 | public FlowBatchOperationExecutor(MatchActionService matchActionService, |
| 39 | FlowMap flowMap, FlowBatchMap flowBatchMap) { |
| 40 | this.flowBatchMap = flowBatchMap; |
| 41 | // TODO: Add later: this.flowMap = flowMap; |
| 42 | this.matchActionService = matchActionService; |
| 43 | this.maIdGenerator = matchActionService.getMatchActionIdGenerator(); |
| 44 | this.maoIdGenerator = matchActionService.getMatchActionOperationsIdGenerator(); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Generates the series of MatchActionOperations from the |
| 49 | * {@link FlowBatchOperation}. |
| 50 | * <p> |
| 51 | * FIXME: Currently supporting ADD operations only. |
| 52 | * <p> |
| 53 | * FIXME: Currently supporting PacketPathFlow and SingleDstTreeFlow only. |
| 54 | * <p> |
| 55 | * FIXME: MatchActionOperations should have dependency field to the other |
| 56 | * match action operations, and this method should use this. |
| 57 | * |
| 58 | * @param op the {@link FlowBatchOperation} object |
| 59 | * @return the list of {@link MatchActionOperations} objects |
| 60 | */ |
| 61 | private List<MatchActionOperations> |
| 62 | generateMatchActionOperationsList(FlowBatchOperation op) { |
| 63 | |
| 64 | // MatchAction operations at head (ingress) switches. |
| 65 | MatchActionOperations headOps = |
| 66 | new MatchActionOperations(maoIdGenerator.getNewId()); |
| 67 | |
| 68 | // MatchAction operations at rest of the switches. |
| 69 | MatchActionOperations tailOps = |
| 70 | new MatchActionOperations(maoIdGenerator.getNewId()); |
| 71 | |
| 72 | for (BatchOperationEntry<Operator, ?> e : op.getOperations()) { |
| 73 | |
| 74 | // Check if it includes unsupported operations |
| 75 | if (e.getOperator() != FlowBatchOperation.Operator.ADD) { |
| 76 | throw new UnsupportedOperationException( |
| 77 | "FlowManager supports ADD operations only."); |
| 78 | } |
| 79 | if (!(e.getTarget() instanceof Flow)) { |
| 80 | throw new IllegalStateException( |
| 81 | "The target is not Flow object: " + e.getTarget()); |
| 82 | } |
| 83 | |
| 84 | // Compile flows to match-actions |
| 85 | Flow flow = (Flow) e.getTarget(); |
| 86 | List<MatchActionOperations> maOps = flow.compile( |
| 87 | e.getOperator(), maIdGenerator, maoIdGenerator); |
| 88 | verifyNotNull(maOps, "Could not compile the flow: " + flow); |
| 89 | verify(maOps.size() == 2, |
| 90 | "The flow generates unspported match-action operations."); |
| 91 | |
| 92 | // Merge match-action operations |
| 93 | for (MatchActionOperationEntry mae : maOps.get(0).getOperations()) { |
| 94 | verify(mae.getOperator() == MatchActionOperations.Operator.ADD); |
| 95 | tailOps.addOperation(mae); |
| 96 | } |
| 97 | for (MatchActionOperationEntry mae : maOps.get(1).getOperations()) { |
| 98 | verify(mae.getOperator() == MatchActionOperations.Operator.ADD); |
| 99 | headOps.addOperation(mae); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | return Arrays.asList(tailOps, headOps); |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public void flowBatchOperationAdded(FlowBatchId id, FlowBatchOperation flowOp) { |
| 108 | |
| 109 | if (flowBatchMap.isLocal(id)) { |
| 110 | // TODO: update flowMap based on flowOp. |
| 111 | |
| 112 | List<MatchActionOperations> maOps = generateMatchActionOperationsList(flowOp); |
| 113 | for (MatchActionOperations maOp : maOps) { |
| 114 | matchActionService.executeOperations(maOp); |
| 115 | } |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | @Override |
| 120 | public void flowBatchOperationRemoved(FlowBatchId id) { |
| 121 | // not used. |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public void flowBatchOperationStateChanged(FlowBatchId id, FlowBatchState oldState, |
| 126 | FlowBatchState currentState) { |
| 127 | // TODO: update flow states in flowMap. |
| 128 | // TODO: update flow batch operation states in flowBatchMap. |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Starts executor. |
| 133 | */ |
| 134 | public void start() { |
| 135 | flowBatchMap.addListener(this); |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * Stops executor. |
| 140 | */ |
| 141 | public void stop() { |
| 142 | flowBatchMap.removeListener(this); |
| 143 | } |
| 144 | } |