Toshio Koide | d6cbec3 | 2014-08-27 15:23:44 -0700 | [diff] [blame] | 1 | package net.onrc.onos.core.flowmanager; |
| 2 | |
| 3 | import static com.google.common.base.Preconditions.checkNotNull; |
| 4 | |
| 5 | import java.util.HashSet; |
| 6 | import java.util.Map.Entry; |
| 7 | import java.util.Set; |
| 8 | |
| 9 | import net.onrc.onos.api.flowmanager.FlowBatchId; |
| 10 | import net.onrc.onos.api.flowmanager.FlowBatchOperation; |
| 11 | import net.onrc.onos.api.flowmanager.FlowBatchState; |
| 12 | import net.onrc.onos.core.datagrid.ISharedCollectionsService; |
| 13 | import net.onrc.onos.core.util.serializers.KryoFactory; |
| 14 | |
| 15 | import com.hazelcast.core.IMap; |
| 16 | |
| 17 | /** |
| 18 | * An implementation of shared distributed map of {@link FlowBatchMap}. |
| 19 | * <p> |
| 20 | * This class's implementation is almost the same to {@link SharedFlowMap}. The |
| 21 | * base class for them should be implemented. |
| 22 | */ |
| 23 | public class SharedFlowBatchMap implements FlowBatchMap { |
| 24 | private static final String FLOWBATCHMAP_NAME = "flowbatch_map"; |
| 25 | private static final String FLOWBATCHSTATEMAP_NAME = "flowbatchstate_map"; |
| 26 | |
| 27 | private final IMap<String, byte[]> flowBatchMap; |
| 28 | private final IMap<String, byte[]> flowBatchStateMap; |
| 29 | private final SharedFlowBatchMapEventDispatcher dispatcher; |
| 30 | |
| 31 | /** |
| 32 | * Creates instance using {@link ISharedCollectionsService} service. |
| 33 | * |
| 34 | * @param service the {@link ISharedCollectionsService} service |
| 35 | */ |
| 36 | SharedFlowBatchMap(ISharedCollectionsService service) { |
| 37 | this.flowBatchMap = checkNotNull(service.getConcurrentMap( |
| 38 | FLOWBATCHMAP_NAME, String.class, byte[].class)); |
| 39 | this.flowBatchStateMap = checkNotNull(service.getConcurrentMap( |
| 40 | FLOWBATCHSTATEMAP_NAME, String.class, byte[].class)); |
| 41 | this.dispatcher = new SharedFlowBatchMapEventDispatcher( |
| 42 | flowBatchMap, flowBatchStateMap); |
| 43 | } |
| 44 | |
| 45 | @Override |
| 46 | public FlowBatchOperation get(FlowBatchId id) { |
| 47 | byte[] buf = flowBatchMap.get(checkNotNull(id).toString()); |
| 48 | if (buf == null) { |
| 49 | return null; |
| 50 | } |
| 51 | return KryoFactory.deserialize(buf); |
| 52 | } |
| 53 | |
| 54 | @Override |
| 55 | public boolean put(FlowBatchId id, FlowBatchOperation flowOp) { |
| 56 | byte[] buf = KryoFactory.serialize(checkNotNull(flowOp)); |
| 57 | flowBatchMap.set(id.toString(), checkNotNull(buf)); |
| 58 | return true; |
| 59 | } |
| 60 | |
| 61 | @Override |
| 62 | public FlowBatchOperation remove(FlowBatchId id) { |
| 63 | String flowBatchIdStr = checkNotNull(id).toString(); |
| 64 | byte[] buf = flowBatchMap.remove(flowBatchIdStr); |
| 65 | if (buf == null) { |
| 66 | return null; |
| 67 | } |
| 68 | flowBatchStateMap.remove(flowBatchIdStr); |
| 69 | return KryoFactory.deserialize(buf); |
| 70 | } |
| 71 | |
| 72 | @Override |
| 73 | public Set<FlowBatchOperation> getAll() { |
| 74 | Set<FlowBatchOperation> flowBatchs = new HashSet<>(); |
| 75 | for (Entry<String, byte[]> entry : flowBatchMap.entrySet()) { |
| 76 | flowBatchs.add((FlowBatchOperation) |
| 77 | KryoFactory.deserialize(entry.getValue())); |
| 78 | } |
| 79 | return flowBatchs; |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | public boolean setState(FlowBatchId id, FlowBatchState state, |
| 84 | FlowBatchState expectedState) { |
| 85 | final String key = checkNotNull( |
| 86 | id, "FlowBatchId is not specified.").toString(); |
| 87 | final byte[] oldValue = KryoFactory.serialize(expectedState); |
| 88 | final byte[] newValue = KryoFactory.serialize(state); |
| 89 | |
| 90 | if (!flowBatchMap.containsKey(key)) { |
| 91 | return false; |
| 92 | } |
| 93 | |
| 94 | if (expectedState == FlowBatchState.SUBMITTED) { |
| 95 | // The absence of the key means SUBMITTED state. |
| 96 | return flowBatchStateMap.putIfAbsent(key, newValue) == null; |
| 97 | } |
| 98 | |
| 99 | return flowBatchStateMap.replace(key, oldValue, newValue); |
| 100 | } |
| 101 | |
| 102 | @Override |
| 103 | public FlowBatchState getState(FlowBatchId id) { |
| 104 | final String key = checkNotNull( |
| 105 | id, "FlowBatchId is not specified.").toString(); |
| 106 | if (!flowBatchMap.containsKey(key)) { |
| 107 | return null; |
| 108 | } |
| 109 | |
| 110 | final byte[] buf = flowBatchStateMap.get(key); |
| 111 | if (buf == null) { |
| 112 | // The absence of the key means SUBMITTED state. |
| 113 | return FlowBatchState.SUBMITTED; |
| 114 | } |
| 115 | return KryoFactory.deserialize(buf); |
| 116 | } |
| 117 | |
| 118 | @Override |
| 119 | public void addListener(FlowBatchMapEventListener listener) { |
| 120 | dispatcher.addListener(listener); |
| 121 | } |
| 122 | |
| 123 | @Override |
| 124 | public void removeListener(FlowBatchMapEventListener listener) { |
| 125 | dispatcher.removeListener(listener); |
| 126 | } |
| 127 | |
| 128 | @Override |
| 129 | public boolean isLocal(FlowBatchId id) { |
| 130 | return flowBatchMap.localKeySet().contains(checkNotNull(id).toString()); |
| 131 | } |
| 132 | } |