Toshio Koide | d6cbec3 | 2014-08-27 15:23:44 -0700 | [diff] [blame] | 1 | package net.onrc.onos.core.flowmanager; |
| 2 | |
| 3 | import java.util.concurrent.CopyOnWriteArraySet; |
| 4 | |
| 5 | import net.onrc.onos.api.flowmanager.FlowBatchId; |
| 6 | import net.onrc.onos.api.flowmanager.FlowBatchOperation; |
| 7 | import net.onrc.onos.api.flowmanager.FlowBatchState; |
| 8 | import net.onrc.onos.core.util.serializers.KryoFactory; |
| 9 | |
| 10 | import org.slf4j.Logger; |
| 11 | import org.slf4j.LoggerFactory; |
| 12 | |
| 13 | import com.hazelcast.core.EntryEvent; |
| 14 | import com.hazelcast.core.EntryListener; |
| 15 | import com.hazelcast.core.IMap; |
| 16 | |
| 17 | /** |
| 18 | * This class is used for managing listeners of the {@link SharedFlowBatchMap}. |
| 19 | */ |
| 20 | public class SharedFlowBatchMapEventDispatcher implements EntryListener<String, byte[]> { |
| 21 | private CopyOnWriteArraySet<FlowBatchMapEventListener> listeners; |
| 22 | private static final Logger log = LoggerFactory |
| 23 | .getLogger(SharedFlowBatchMapEventDispatcher.class); |
| 24 | |
| 25 | /** |
| 26 | * Creates dispatcher using flow batch map objects. |
| 27 | * |
| 28 | * @param flowBatchMap the flow batch map object |
| 29 | * @param flowBatchStateMap the flow batch state map object |
| 30 | */ |
| 31 | public SharedFlowBatchMapEventDispatcher(IMap<String, byte[]> flowBatchMap, |
| 32 | IMap<String, byte[]> flowBatchStateMap) { |
| 33 | listeners = new CopyOnWriteArraySet<>(); |
| 34 | flowBatchMap.addEntryListener(this, true); |
| 35 | flowBatchStateMap.addEntryListener(this, true); |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Adds a listener for listening events related to the map. |
| 40 | * |
| 41 | * @param listener the {@link FlowBatchMapEventListener} to be added |
| 42 | */ |
| 43 | public void addListener(FlowBatchMapEventListener listener) { |
| 44 | listeners.add(listener); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Removes a listener for listening events related to the map. |
| 49 | * |
| 50 | * @param listener the {@link FlowBatchMapEventListener} to be removed |
| 51 | */ |
| 52 | public void removeListener(FlowBatchMapEventListener listener) { |
| 53 | listeners.remove(listener); |
| 54 | } |
| 55 | |
| 56 | @Override |
| 57 | public void entryAdded(EntryEvent<String, byte[]> event) { |
| 58 | final Object value = KryoFactory.deserialize(event.getValue()); |
| 59 | if (value instanceof FlowBatchOperation) { |
| 60 | // Handles events from flowBatchMap. |
| 61 | final FlowBatchOperation flowOp = (FlowBatchOperation) value; |
| 62 | final FlowBatchId id = new FlowBatchId(Long.parseLong(event.getKey())); |
| 63 | log.trace("Flow batch operation ID:{}, {} was added", id, flowOp); |
| 64 | for (FlowBatchMapEventListener e : listeners) { |
| 65 | FlowBatchOperation copiedFlowOp = |
| 66 | new FlowBatchOperation(flowOp.getOperations()); |
| 67 | e.flowBatchOperationAdded(id, copiedFlowOp); |
| 68 | e.flowBatchOperationStateChanged(id, null, FlowBatchState.SUBMITTED); |
| 69 | } |
| 70 | } else if (value instanceof FlowBatchState) { |
| 71 | // Handles events from flowBatchStateMap. |
| 72 | final FlowBatchState state = (FlowBatchState) value; |
| 73 | final FlowBatchId id = new FlowBatchId(Long.parseLong(event.getKey())); |
| 74 | log.trace("FlowState of FlowId {} was set to {}", id, state); |
| 75 | for (FlowBatchMapEventListener e : listeners) { |
| 76 | e.flowBatchOperationStateChanged(id, FlowBatchState.SUBMITTED, state); |
| 77 | } |
| 78 | } else { |
| 79 | throw new IllegalStateException("Added illegal value: " + value); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | @Override |
| 84 | public void entryRemoved(EntryEvent<String, byte[]> event) { |
| 85 | final Object value = KryoFactory.deserialize(event.getValue()); |
| 86 | if (value instanceof FlowBatchOperation) { |
| 87 | // Handles events from flowBatchMap. |
| 88 | final FlowBatchOperation flowOp = (FlowBatchOperation) value; |
| 89 | final FlowBatchId id = new FlowBatchId(Long.parseLong(event.getKey())); |
| 90 | log.trace("Flow batch operation ID:{}, {} was removed", id, flowOp); |
| 91 | for (FlowBatchMapEventListener e : listeners) { |
| 92 | e.flowBatchOperationRemoved(id); |
| 93 | } |
| 94 | } else if (value instanceof FlowBatchState) { |
| 95 | // Handles events from flowBatchStateMap. |
| 96 | log.trace("Flow batch state {} of ID:{} was removed", value, event.getKey()); |
| 97 | } else { |
| 98 | throw new IllegalStateException("Removed illegal value: " + value); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | @Override |
| 103 | public void entryUpdated(EntryEvent<String, byte[]> event) { |
| 104 | final Object value = KryoFactory.deserialize(event.getValue()); |
| 105 | if (value instanceof FlowBatchOperation) { |
| 106 | // Handles events from flowBatchMap. |
| 107 | log.trace("Flow batch operation ID:{} updated by {}", event.getKey(), value); |
| 108 | } else if (value instanceof FlowBatchState) { |
| 109 | // Handles events from flowBatchStateMap. |
| 110 | Object oldValue = KryoFactory.deserialize(event.getOldValue()); |
| 111 | final FlowBatchState currentState = (FlowBatchState) value; |
| 112 | final FlowBatchState oldState = (FlowBatchState) oldValue; |
| 113 | final FlowBatchId id = new FlowBatchId(Long.parseLong(event.getKey())); |
| 114 | log.trace("Flow batch state of ID:{} was updated from {} to {}", |
| 115 | id, oldState, currentState); |
| 116 | for (FlowBatchMapEventListener e : listeners) { |
| 117 | e.flowBatchOperationStateChanged(id, oldState, currentState); |
| 118 | } |
| 119 | } else { |
| 120 | throw new IllegalStateException("Updated illegal value: " + value); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public void entryEvicted(EntryEvent<String, byte[]> event) { |
| 126 | // do nothing. |
| 127 | } |
| 128 | |
| 129 | } |