Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 1 | package net.onrc.onos.ofcontroller.flowmanager; |
| 2 | |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 3 | import java.util.ArrayList; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 4 | import java.util.Collection; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 5 | import java.util.HashMap; |
| 6 | import java.util.Iterator; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 7 | import java.util.LinkedList; |
| 8 | import java.util.List; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 9 | import java.util.Map; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 10 | import java.util.concurrent.BlockingQueue; |
| 11 | import java.util.concurrent.LinkedBlockingQueue; |
| 12 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 13 | import net.floodlightcontroller.core.IOFSwitch; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 14 | import net.onrc.onos.datagrid.IDatagridService; |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 15 | import net.onrc.onos.ofcontroller.topology.Topology; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 16 | import net.onrc.onos.ofcontroller.topology.TopologyElement; |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 17 | import net.onrc.onos.ofcontroller.topology.TopologyManager; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 18 | import net.onrc.onos.ofcontroller.util.DataPath; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 19 | import net.onrc.onos.ofcontroller.util.EventEntry; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 20 | import net.onrc.onos.ofcontroller.util.FlowEntry; |
| 21 | import net.onrc.onos.ofcontroller.util.FlowEntryAction; |
| 22 | import net.onrc.onos.ofcontroller.util.FlowEntryActions; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 23 | import net.onrc.onos.ofcontroller.util.FlowEntryId; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 24 | import net.onrc.onos.ofcontroller.util.FlowEntryMatch; |
| 25 | import net.onrc.onos.ofcontroller.util.FlowEntrySwitchState; |
| 26 | import net.onrc.onos.ofcontroller.util.FlowEntryUserState; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 27 | import net.onrc.onos.ofcontroller.util.FlowId; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 28 | import net.onrc.onos.ofcontroller.util.FlowPath; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 29 | import net.onrc.onos.ofcontroller.util.FlowPathUserState; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 30 | |
| 31 | import org.slf4j.Logger; |
| 32 | import org.slf4j.LoggerFactory; |
| 33 | |
| 34 | /** |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 35 | * A class for storing a pair of Flow Path and a Flow Entry. |
| 36 | */ |
| 37 | class FlowPathEntryPair { |
| 38 | protected FlowPath flowPath; |
| 39 | protected FlowEntry flowEntry; |
| 40 | |
| 41 | protected FlowPathEntryPair(FlowPath flowPath, FlowEntry flowEntry) { |
| 42 | this.flowPath = flowPath; |
| 43 | this.flowEntry = flowEntry; |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | /** |
Yuta HIGUCHI | e1038fb | 2013-10-30 15:35:18 -0700 | [diff] [blame] | 48 | * Class for FlowPath Maintenance. |
| 49 | * This class listens for FlowEvents to: |
| 50 | * - Maintain a local cache of the Network Topology. |
| 51 | * - Detect FlowPaths impacted by Topology change. |
| 52 | * - Recompute impacted FlowPath using cached Topology. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 53 | */ |
Pavlin Radoslavov | 9a85902 | 2013-10-30 10:08:24 -0700 | [diff] [blame] | 54 | class FlowEventHandler extends Thread implements IFlowEventHandlerService { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 55 | /** The logger. */ |
Pavlin Radoslavov | 9a85902 | 2013-10-30 10:08:24 -0700 | [diff] [blame] | 56 | private final static Logger log = LoggerFactory.getLogger(FlowEventHandler.class); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 57 | |
| 58 | private FlowManager flowManager; // The Flow Manager to use |
| 59 | private IDatagridService datagridService; // The Datagrid Service to use |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 60 | private Topology topology; // The network topology |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 61 | private Map<Long, FlowPath> allFlowPaths = new HashMap<Long, FlowPath>(); |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 62 | private Map<Long, FlowEntry> unmatchedFlowEntryAdd = |
| 63 | new HashMap<Long, FlowEntry>(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 64 | |
| 65 | // The queue with Flow Path and Topology Element updates |
| 66 | private BlockingQueue<EventEntry<?>> networkEvents = |
| 67 | new LinkedBlockingQueue<EventEntry<?>>(); |
| 68 | |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 69 | // The pending Topology, FlowPath, and FlowEntry events |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 70 | private List<EventEntry<TopologyElement>> topologyEvents = |
| 71 | new LinkedList<EventEntry<TopologyElement>>(); |
| 72 | private List<EventEntry<FlowPath>> flowPathEvents = |
| 73 | new LinkedList<EventEntry<FlowPath>>(); |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 74 | private List<EventEntry<FlowEntry>> flowEntryEvents = |
| 75 | new LinkedList<EventEntry<FlowEntry>>(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 76 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 77 | // |
| 78 | // Transient state for processing the Flow Paths: |
| 79 | // - The new Flow Paths |
| 80 | // - The Flow Paths that should be recomputed |
| 81 | // - The Flow Paths with modified Flow Entries |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 82 | // - The Flow Entries that were updated |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 83 | // |
| 84 | private List<FlowPath> newFlowPaths = new LinkedList<FlowPath>(); |
| 85 | private List<FlowPath> recomputeFlowPaths = new LinkedList<FlowPath>(); |
| 86 | private List<FlowPath> modifiedFlowPaths = new LinkedList<FlowPath>(); |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 87 | private List<FlowPathEntryPair> updatedFlowEntries = |
| 88 | new LinkedList<FlowPathEntryPair>(); |
| 89 | private List<FlowPathEntryPair> unmatchedDeleteFlowEntries = |
| 90 | new LinkedList<FlowPathEntryPair>(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 91 | |
| 92 | |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 93 | /** |
| 94 | * Constructor for a given Flow Manager and Datagrid Service. |
| 95 | * |
| 96 | * @param flowManager the Flow Manager to use. |
| 97 | * @param datagridService the Datagrid Service to use. |
| 98 | */ |
Pavlin Radoslavov | 9a85902 | 2013-10-30 10:08:24 -0700 | [diff] [blame] | 99 | FlowEventHandler(FlowManager flowManager, |
| 100 | IDatagridService datagridService) { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 101 | this.flowManager = flowManager; |
| 102 | this.datagridService = datagridService; |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 103 | this.topology = new Topology(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | /** |
Pavlin Radoslavov | ed0f4a8 | 2013-11-04 16:38:36 -0800 | [diff] [blame] | 107 | * Get the network topology. |
| 108 | * |
| 109 | * @return the network topology. |
| 110 | */ |
| 111 | protected Topology getTopology() { return this.topology; } |
| 112 | |
| 113 | /** |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 114 | * Startup processing. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 115 | */ |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 116 | private void startup() { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 117 | // |
| 118 | // Obtain the initial Topology state |
| 119 | // |
| 120 | Collection<TopologyElement> topologyElements = |
| 121 | datagridService.getAllTopologyElements(); |
| 122 | for (TopologyElement topologyElement : topologyElements) { |
| 123 | EventEntry<TopologyElement> eventEntry = |
| 124 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 125 | topologyEvents.add(eventEntry); |
| 126 | } |
| 127 | // |
| 128 | // Obtain the initial Flow Path state |
| 129 | // |
| 130 | Collection<FlowPath> flowPaths = datagridService.getAllFlows(); |
| 131 | for (FlowPath flowPath : flowPaths) { |
| 132 | EventEntry<FlowPath> eventEntry = |
| 133 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 134 | flowPathEvents.add(eventEntry); |
| 135 | } |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 136 | // |
| 137 | // Obtain the initial FlowEntry state |
| 138 | // |
| 139 | Collection<FlowEntry> flowEntries = datagridService.getAllFlowEntries(); |
| 140 | for (FlowEntry flowEntry : flowEntries) { |
| 141 | EventEntry<FlowEntry> eventEntry = |
| 142 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_ADD, flowEntry); |
| 143 | flowEntryEvents.add(eventEntry); |
| 144 | } |
| 145 | |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 146 | // Process the initial events (if any) |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 147 | processEvents(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | /** |
| 151 | * Run the thread. |
| 152 | */ |
| 153 | @Override |
| 154 | public void run() { |
| 155 | startup(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 156 | |
| 157 | // |
| 158 | // The main loop |
| 159 | // |
| 160 | Collection<EventEntry<?>> collection = new LinkedList<EventEntry<?>>(); |
| 161 | try { |
| 162 | while (true) { |
| 163 | EventEntry<?> eventEntry = networkEvents.take(); |
| 164 | collection.add(eventEntry); |
| 165 | networkEvents.drainTo(collection); |
| 166 | |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 167 | // |
| 168 | // Demultiplex all events: |
| 169 | // - EventEntry<TopologyElement> |
| 170 | // - EventEntry<FlowPath> |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 171 | // - EventEntry<FlowEntry> |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 172 | // |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 173 | for (EventEntry<?> event : collection) { |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame^] | 174 | // Topology event |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 175 | if (event.eventData() instanceof TopologyElement) { |
| 176 | EventEntry<TopologyElement> topologyEventEntry = |
| 177 | (EventEntry<TopologyElement>)event; |
| 178 | topologyEvents.add(topologyEventEntry); |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame^] | 179 | continue; |
| 180 | } |
| 181 | |
| 182 | // FlowPath event |
| 183 | if (event.eventData() instanceof FlowPath) { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 184 | EventEntry<FlowPath> flowPathEventEntry = |
| 185 | (EventEntry<FlowPath>)event; |
| 186 | flowPathEvents.add(flowPathEventEntry); |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame^] | 187 | continue; |
| 188 | } |
| 189 | |
| 190 | // FlowEntry event |
| 191 | if (event.eventData() instanceof FlowEntry) { |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 192 | EventEntry<FlowEntry> flowEntryEventEntry = |
| 193 | (EventEntry<FlowEntry>)event; |
| 194 | flowEntryEvents.add(flowEntryEventEntry); |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame^] | 195 | continue; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 196 | } |
| 197 | } |
| 198 | collection.clear(); |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 199 | |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 200 | // Process the events (if any) |
| 201 | processEvents(); |
| 202 | } |
| 203 | } catch (Exception exception) { |
| 204 | log.debug("Exception processing Network Events: ", exception); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * Process the events (if any) |
| 210 | */ |
| 211 | private void processEvents() { |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 212 | List<FlowPathEntryPair> modifiedFlowEntries; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 213 | |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 214 | if (topologyEvents.isEmpty() && flowPathEvents.isEmpty() && |
| 215 | flowEntryEvents.isEmpty()) { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 216 | return; // Nothing to do |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 217 | } |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 218 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 219 | processFlowPathEvents(); |
| 220 | processTopologyEvents(); |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 221 | // |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 222 | // Add all new Flows: should be done after processing the Flow Path |
| 223 | // and Topology events. |
| 224 | // |
| 225 | for (FlowPath flowPath : newFlowPaths) { |
| 226 | allFlowPaths.put(flowPath.flowId().value(), flowPath); |
| 227 | } |
| 228 | |
| 229 | processFlowEntryEvents(); |
| 230 | |
| 231 | // Recompute all affected Flow Paths and keep only the modified |
| 232 | for (FlowPath flowPath : recomputeFlowPaths) { |
| 233 | if (recomputeFlowPath(flowPath)) |
| 234 | modifiedFlowPaths.add(flowPath); |
| 235 | } |
| 236 | |
| 237 | modifiedFlowEntries = extractModifiedFlowEntries(modifiedFlowPaths); |
| 238 | |
| 239 | // Assign missing Flow Entry IDs |
| 240 | assignFlowEntryId(modifiedFlowEntries); |
| 241 | |
| 242 | // |
| 243 | // Push the modified Flow Entries to switches, datagrid and database |
| 244 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 245 | flowManager.pushModifiedFlowEntriesToSwitches(modifiedFlowEntries); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 246 | flowManager.pushModifiedFlowEntriesToDatagrid(modifiedFlowEntries); |
| 247 | flowManager.pushModifiedFlowEntriesToDatabase(modifiedFlowEntries); |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 248 | flowManager.pushModifiedFlowEntriesToDatabase(updatedFlowEntries); |
| 249 | flowManager.pushModifiedFlowEntriesToDatabase(unmatchedDeleteFlowEntries); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 250 | |
| 251 | // |
| 252 | // Remove Flow Entries that were deleted |
| 253 | // |
| 254 | for (FlowPath flowPath : modifiedFlowPaths) |
| 255 | flowPath.dataPath().removeDeletedFlowEntries(); |
| 256 | |
| 257 | // Cleanup |
| 258 | topologyEvents.clear(); |
| 259 | flowPathEvents.clear(); |
| 260 | flowEntryEvents.clear(); |
| 261 | // |
| 262 | newFlowPaths.clear(); |
| 263 | recomputeFlowPaths.clear(); |
| 264 | modifiedFlowPaths.clear(); |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 265 | updatedFlowEntries.clear(); |
| 266 | unmatchedDeleteFlowEntries.clear(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 267 | } |
| 268 | |
| 269 | /** |
| 270 | * Extract the modified Flow Entries. |
| 271 | */ |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 272 | private List<FlowPathEntryPair> extractModifiedFlowEntries( |
| 273 | List<FlowPath> modifiedFlowPaths) { |
| 274 | List<FlowPathEntryPair> modifiedFlowEntries = |
| 275 | new LinkedList<FlowPathEntryPair>(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 276 | |
| 277 | // Extract only the modified Flow Entries |
| 278 | for (FlowPath flowPath : modifiedFlowPaths) { |
| 279 | for (FlowEntry flowEntry : flowPath.flowEntries()) { |
| 280 | if (flowEntry.flowEntrySwitchState() == |
| 281 | FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED) { |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 282 | FlowPathEntryPair flowPair = |
| 283 | new FlowPathEntryPair(flowPath, flowEntry); |
| 284 | modifiedFlowEntries.add(flowPair); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 285 | } |
| 286 | } |
| 287 | } |
| 288 | return modifiedFlowEntries; |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | * Assign the Flow Entry ID as needed. |
| 293 | */ |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 294 | private void assignFlowEntryId(List<FlowPathEntryPair> modifiedFlowEntries) { |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 295 | if (modifiedFlowEntries.isEmpty()) |
| 296 | return; |
| 297 | |
| 298 | Map<Long, IOFSwitch> mySwitches = flowManager.getMySwitches(); |
| 299 | |
| 300 | // |
| 301 | // Assign the Flow Entry ID only for Flow Entries for my switches |
| 302 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 303 | for (FlowPathEntryPair flowPair : modifiedFlowEntries) { |
| 304 | FlowEntry flowEntry = flowPair.flowEntry; |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 305 | // Update the Flow Entries only for my switches |
| 306 | IOFSwitch mySwitch = mySwitches.get(flowEntry.dpid().value()); |
| 307 | if (mySwitch == null) |
| 308 | continue; |
| 309 | if (! flowEntry.isValidFlowEntryId()) { |
| 310 | long id = flowManager.getNextFlowEntryId(); |
| 311 | flowEntry.setFlowEntryId(new FlowEntryId(id)); |
| 312 | } |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | /** |
| 317 | * Process the Flow Path events. |
| 318 | */ |
| 319 | private void processFlowPathEvents() { |
| 320 | // |
| 321 | // Process all Flow Path events and update the appropriate state |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 322 | // |
| 323 | for (EventEntry<FlowPath> eventEntry : flowPathEvents) { |
| 324 | FlowPath flowPath = eventEntry.eventData(); |
| 325 | |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 326 | log.debug("Flow Event: {} {}", eventEntry.eventType(), |
| 327 | flowPath.toString()); |
| 328 | |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 329 | switch (eventEntry.eventType()) { |
| 330 | case ENTRY_ADD: { |
| 331 | // |
| 332 | // Add a new Flow Path |
| 333 | // |
| 334 | if (allFlowPaths.get(flowPath.flowId().value()) != null) { |
| 335 | // |
| 336 | // TODO: What to do if the Flow Path already exists? |
| 337 | // Remove and then re-add it, or merge the info? |
| 338 | // For now, we don't have to do anything. |
| 339 | // |
| 340 | break; |
| 341 | } |
| 342 | |
| 343 | switch (flowPath.flowPathType()) { |
| 344 | case FP_TYPE_SHORTEST_PATH: |
| 345 | // |
| 346 | // Reset the Data Path, in case it was set already, because |
| 347 | // we are going to recompute it anyway. |
| 348 | // |
| 349 | flowPath.flowEntries().clear(); |
| 350 | recomputeFlowPaths.add(flowPath); |
| 351 | break; |
| 352 | case FP_TYPE_EXPLICIT_PATH: |
| 353 | // |
| 354 | // Mark all Flow Entries for installation in the switches. |
| 355 | // |
| 356 | for (FlowEntry flowEntry : flowPath.flowEntries()) { |
| 357 | flowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 358 | } |
| 359 | modifiedFlowPaths.add(flowPath); |
| 360 | break; |
| 361 | } |
| 362 | newFlowPaths.add(flowPath); |
| 363 | |
| 364 | break; |
| 365 | } |
| 366 | |
| 367 | case ENTRY_REMOVE: { |
| 368 | // |
| 369 | // Remove an existing Flow Path. |
| 370 | // |
| 371 | // Find the Flow Path, and mark the Flow and its Flow Entries |
| 372 | // for deletion. |
| 373 | // |
| 374 | FlowPath existingFlowPath = |
| 375 | allFlowPaths.get(flowPath.flowId().value()); |
| 376 | if (existingFlowPath == null) |
| 377 | continue; // Nothing to do |
| 378 | |
| 379 | existingFlowPath.setFlowPathUserState(FlowPathUserState.FP_USER_DELETE); |
| 380 | for (FlowEntry flowEntry : existingFlowPath.flowEntries()) { |
| 381 | flowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 382 | flowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 383 | } |
| 384 | |
Yuta HIGUCHI | 2b5d071 | 2013-10-30 15:48:13 -0700 | [diff] [blame] | 385 | allFlowPaths.remove(existingFlowPath.flowId().value()); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 386 | modifiedFlowPaths.add(existingFlowPath); |
| 387 | |
| 388 | break; |
| 389 | } |
| 390 | } |
| 391 | } |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 392 | } |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 393 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 394 | /** |
| 395 | * Process the Topology events. |
| 396 | */ |
| 397 | private void processTopologyEvents() { |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 398 | // |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 399 | // Process all Topology events and update the appropriate state |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 400 | // |
| 401 | boolean isTopologyModified = false; |
| 402 | for (EventEntry<TopologyElement> eventEntry : topologyEvents) { |
| 403 | TopologyElement topologyElement = eventEntry.eventData(); |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 404 | |
| 405 | log.debug("Topology Event: {} {}", eventEntry.eventType(), |
| 406 | topologyElement.toString()); |
| 407 | |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 408 | switch (eventEntry.eventType()) { |
| 409 | case ENTRY_ADD: |
Yuta HIGUCHI | b32f77f | 2013-10-30 15:36:32 -0700 | [diff] [blame] | 410 | isTopologyModified |= topology.addTopologyElement(topologyElement); |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 411 | break; |
| 412 | case ENTRY_REMOVE: |
Yuta HIGUCHI | b32f77f | 2013-10-30 15:36:32 -0700 | [diff] [blame] | 413 | isTopologyModified |= topology.removeTopologyElement(topologyElement); |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 414 | break; |
| 415 | } |
| 416 | } |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 417 | if (isTopologyModified) { |
| 418 | // TODO: For now, if the topology changes, we recompute all Flows |
| 419 | recomputeFlowPaths.addAll(allFlowPaths.values()); |
| 420 | } |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 421 | } |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 422 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 423 | /** |
| 424 | * Process the Flow Entry events. |
| 425 | */ |
| 426 | private void processFlowEntryEvents() { |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 427 | FlowPathEntryPair flowPair; |
| 428 | FlowPath flowPath; |
| 429 | FlowEntry updatedFlowEntry; |
| 430 | |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 431 | // |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 432 | // Update Flow Entries with previously unmatched Flow Entry updates |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 433 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 434 | if (! unmatchedFlowEntryAdd.isEmpty()) { |
| 435 | Map<Long, FlowEntry> remainingUpdates = new HashMap<Long, FlowEntry>(); |
| 436 | for (FlowEntry flowEntry : unmatchedFlowEntryAdd.values()) { |
| 437 | flowPath = allFlowPaths.get(flowEntry.flowId().value()); |
| 438 | if (flowPath == null) |
| 439 | continue; |
| 440 | updatedFlowEntry = updateFlowEntryAdd(flowPath, flowEntry); |
| 441 | if (updatedFlowEntry == null) { |
| 442 | remainingUpdates.put(flowEntry.flowEntryId().value(), |
| 443 | flowEntry); |
| 444 | continue; |
| 445 | } |
| 446 | flowPair = new FlowPathEntryPair(flowPath, updatedFlowEntry); |
| 447 | updatedFlowEntries.add(flowPair); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 448 | } |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 449 | unmatchedFlowEntryAdd = remainingUpdates; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 450 | } |
| 451 | |
| 452 | // |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 453 | // Process all Flow Entry events and update the appropriate state |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 454 | // |
| 455 | for (EventEntry<FlowEntry> eventEntry : flowEntryEvents) { |
| 456 | FlowEntry flowEntry = eventEntry.eventData(); |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 457 | |
| 458 | log.debug("Flow Entry Event: {} {}", eventEntry.eventType(), |
| 459 | flowEntry.toString()); |
| 460 | |
| 461 | if ((! flowEntry.isValidFlowId()) || |
| 462 | (! flowEntry.isValidFlowEntryId())) { |
| 463 | continue; |
| 464 | } |
| 465 | |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 466 | switch (eventEntry.eventType()) { |
| 467 | case ENTRY_ADD: |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 468 | flowPath = allFlowPaths.get(flowEntry.flowId().value()); |
| 469 | if (flowPath == null) { |
| 470 | // Flow Path not found: keep the entry for later matching |
| 471 | unmatchedFlowEntryAdd.put(flowEntry.flowEntryId().value(), |
| 472 | flowEntry); |
| 473 | break; |
| 474 | } |
| 475 | updatedFlowEntry = updateFlowEntryAdd(flowPath, flowEntry); |
| 476 | if (updatedFlowEntry == null) { |
| 477 | // Flow Entry not found: keep the entry for later matching |
| 478 | unmatchedFlowEntryAdd.put(flowEntry.flowEntryId().value(), |
| 479 | flowEntry); |
| 480 | break; |
| 481 | } |
| 482 | // Add the updated entry to the list of updated Flow Entries |
| 483 | flowPair = new FlowPathEntryPair(flowPath, updatedFlowEntry); |
| 484 | updatedFlowEntries.add(flowPair); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 485 | break; |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 486 | |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 487 | case ENTRY_REMOVE: |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 488 | flowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 489 | if (unmatchedFlowEntryAdd.remove(flowEntry.flowEntryId().value()) != null) { |
| 490 | continue; // Match found |
| 491 | } |
| 492 | |
| 493 | flowPath = allFlowPaths.get(flowEntry.flowId().value()); |
| 494 | if (flowPath == null) { |
| 495 | // Flow Path not found: ignore the update |
| 496 | break; |
| 497 | } |
| 498 | updatedFlowEntry = updateFlowEntryRemove(flowPath, flowEntry); |
| 499 | if (updatedFlowEntry == null) { |
| 500 | // Flow Entry not found: add to list of deleted entries |
| 501 | flowPair = new FlowPathEntryPair(flowPath, flowEntry); |
| 502 | unmatchedDeleteFlowEntries.add(flowPair); |
| 503 | break; |
| 504 | } |
| 505 | flowPair = new FlowPathEntryPair(flowPath, updatedFlowEntry); |
| 506 | updatedFlowEntries.add(flowPair); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 507 | break; |
| 508 | } |
| 509 | } |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | /** |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 513 | * Update a Flow Entry because of an external ENTRY_ADD event. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 514 | * |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 515 | * @param flowPath the FlowPath for the Flow Entry to update. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 516 | * @param flowEntry the FlowEntry with the new state. |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 517 | * @return the updated Flow Entry if found, otherwise null. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 518 | */ |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 519 | private FlowEntry updateFlowEntryAdd(FlowPath flowPath, |
| 520 | FlowEntry flowEntry) { |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 521 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 522 | // Iterate over all Flow Entries and find a match. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 523 | // |
| 524 | for (FlowEntry localFlowEntry : flowPath.flowEntries()) { |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 525 | if (! TopologyManager.isSameFlowEntryDataPath(localFlowEntry, |
| 526 | flowEntry)) { |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 527 | continue; |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 528 | } |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 529 | |
| 530 | // |
| 531 | // Local Flow Entry match found |
| 532 | // |
| 533 | if (localFlowEntry.isValidFlowEntryId()) { |
| 534 | if (localFlowEntry.flowEntryId().value() != |
| 535 | flowEntry.flowEntryId().value()) { |
| 536 | // |
| 537 | // Find a local Flow Entry, but the Flow Entry ID doesn't |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 538 | // match. Keep looking. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 539 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 540 | continue; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 541 | } |
| 542 | } else { |
| 543 | // Update the Flow Entry ID |
| 544 | FlowEntryId flowEntryId = |
| 545 | new FlowEntryId(flowEntry.flowEntryId().value()); |
| 546 | localFlowEntry.setFlowEntryId(flowEntryId); |
| 547 | } |
| 548 | |
| 549 | // |
| 550 | // Update the local Flow Entry. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 551 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 552 | localFlowEntry.setFlowEntryUserState(flowEntry.flowEntryUserState()); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 553 | localFlowEntry.setFlowEntrySwitchState(flowEntry.flowEntrySwitchState()); |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 554 | return localFlowEntry; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 555 | } |
| 556 | |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 557 | return null; // Entry not found |
| 558 | } |
| 559 | |
| 560 | /** |
| 561 | * Update a Flow Entry because of an external ENTRY_REMOVE event. |
| 562 | * |
| 563 | * @param flowPath the FlowPath for the Flow Entry to update. |
| 564 | * @param flowEntry the FlowEntry with the new state. |
| 565 | * @return the updated Flow Entry if found, otherwise null. |
| 566 | */ |
| 567 | private FlowEntry updateFlowEntryRemove(FlowPath flowPath, |
| 568 | FlowEntry flowEntry) { |
| 569 | // |
| 570 | // Iterate over all Flow Entries and find a match based on |
| 571 | // the Flow Entry ID. |
| 572 | // |
| 573 | for (FlowEntry localFlowEntry : flowPath.flowEntries()) { |
| 574 | if (! localFlowEntry.isValidFlowEntryId()) |
| 575 | continue; |
| 576 | if (localFlowEntry.flowEntryId().value() != |
| 577 | flowEntry.flowEntryId().value()) { |
| 578 | continue; |
| 579 | } |
| 580 | // |
| 581 | // Update the local Flow Entry. |
| 582 | // |
| 583 | localFlowEntry.setFlowEntryUserState(flowEntry.flowEntryUserState()); |
| 584 | localFlowEntry.setFlowEntrySwitchState(flowEntry.flowEntrySwitchState()); |
| 585 | return localFlowEntry; |
| 586 | } |
| 587 | |
| 588 | return null; // Entry not found |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 589 | } |
| 590 | |
| 591 | /** |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 592 | * Recompute a Flow Path. |
| 593 | * |
| 594 | * @param flowPath the Flow Path to recompute. |
| 595 | * @return true if the recomputed Flow Path has changed, otherwise false. |
| 596 | */ |
| 597 | private boolean recomputeFlowPath(FlowPath flowPath) { |
| 598 | boolean hasChanged = false; |
| 599 | |
| 600 | // |
| 601 | // Test whether the Flow Path needs to be recomputed |
| 602 | // |
| 603 | switch (flowPath.flowPathType()) { |
Yuta HIGUCHI | e1038fb | 2013-10-30 15:35:18 -0700 | [diff] [blame] | 604 | case FP_TYPE_UNKNOWN: |
| 605 | return false; // Can't recompute on Unknown FlowType |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 606 | case FP_TYPE_SHORTEST_PATH: |
| 607 | break; |
| 608 | case FP_TYPE_EXPLICIT_PATH: |
| 609 | return false; // An explicit path never changes |
| 610 | } |
| 611 | |
| 612 | DataPath oldDataPath = flowPath.dataPath(); |
| 613 | |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 614 | // Compute the new path |
| 615 | DataPath newDataPath = TopologyManager.computeNetworkPath(topology, |
| 616 | flowPath); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 617 | if (newDataPath == null) { |
| 618 | // We need the DataPath to compare the paths |
| 619 | newDataPath = new DataPath(); |
| 620 | } |
| 621 | newDataPath.applyFlowPathFlags(flowPath.flowPathFlags()); |
| 622 | |
| 623 | // |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 624 | // Test whether the new path is same |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 625 | // |
| 626 | if (oldDataPath.flowEntries().size() != |
| 627 | newDataPath.flowEntries().size()) { |
| 628 | hasChanged = true; |
| 629 | } else { |
| 630 | Iterator<FlowEntry> oldIter = oldDataPath.flowEntries().iterator(); |
| 631 | Iterator<FlowEntry> newIter = newDataPath.flowEntries().iterator(); |
| 632 | while (oldIter.hasNext() && newIter.hasNext()) { |
| 633 | FlowEntry oldFlowEntry = oldIter.next(); |
| 634 | FlowEntry newFlowEntry = newIter.next(); |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 635 | if (! TopologyManager.isSameFlowEntryDataPath(oldFlowEntry, |
| 636 | newFlowEntry)) { |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 637 | hasChanged = true; |
| 638 | break; |
| 639 | } |
| 640 | } |
| 641 | } |
| 642 | if (! hasChanged) |
| 643 | return hasChanged; |
| 644 | |
| 645 | // |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 646 | // Merge the changes in the path: |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 647 | // - If a Flow Entry for a switch is in the old data path, but not |
| 648 | // in the new data path, then mark it for deletion. |
| 649 | // - If a Flow Entry for a switch is in the new data path, but not |
| 650 | // in the old data path, then mark it for addition. |
| 651 | // - If a Flow Entry for a switch is in both the old and the new |
| 652 | // data path, but it has changed, e.g., the incoming and/or outgoing |
| 653 | // port(s), then mark the old Flow Entry for deletion, and mark |
| 654 | // the new Flow Entry for addition. |
| 655 | // - If a Flow Entry for a switch is in both the old and the new |
| 656 | // data path, and it hasn't changed, then just keep it. |
| 657 | // |
| 658 | // NOTE: We use the Switch DPID of each entry to match the entries |
| 659 | // |
| 660 | Map<Long, FlowEntry> oldFlowEntriesMap = new HashMap<Long, FlowEntry>(); |
| 661 | Map<Long, FlowEntry> newFlowEntriesMap = new HashMap<Long, FlowEntry>(); |
| 662 | ArrayList<FlowEntry> finalFlowEntries = new ArrayList<FlowEntry>(); |
| 663 | List<FlowEntry> deletedFlowEntries = new LinkedList<FlowEntry>(); |
| 664 | |
| 665 | // Prepare maps with the Flow Entries, so they are fast to lookup |
| 666 | for (FlowEntry flowEntry : oldDataPath.flowEntries()) |
| 667 | oldFlowEntriesMap.put(flowEntry.dpid().value(), flowEntry); |
| 668 | for (FlowEntry flowEntry : newDataPath.flowEntries()) |
| 669 | newFlowEntriesMap.put(flowEntry.dpid().value(), flowEntry); |
| 670 | |
| 671 | // |
| 672 | // Find the old Flow Entries that should be deleted |
| 673 | // |
| 674 | for (FlowEntry oldFlowEntry : oldDataPath.flowEntries()) { |
| 675 | FlowEntry newFlowEntry = |
| 676 | newFlowEntriesMap.get(oldFlowEntry.dpid().value()); |
| 677 | if (newFlowEntry == null) { |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 678 | // The old Flow Entry should be deleted: not on the path |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 679 | oldFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 680 | oldFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 681 | deletedFlowEntries.add(oldFlowEntry); |
| 682 | } |
| 683 | } |
| 684 | |
| 685 | // |
| 686 | // Find the new Flow Entries that should be added or updated |
| 687 | // |
| 688 | int idx = 0; |
| 689 | for (FlowEntry newFlowEntry : newDataPath.flowEntries()) { |
| 690 | FlowEntry oldFlowEntry = |
| 691 | oldFlowEntriesMap.get(newFlowEntry.dpid().value()); |
| 692 | |
| 693 | if ((oldFlowEntry != null) && |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 694 | TopologyManager.isSameFlowEntryDataPath(oldFlowEntry, |
| 695 | newFlowEntry)) { |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 696 | // |
| 697 | // Both Flow Entries are same |
| 698 | // |
| 699 | finalFlowEntries.add(oldFlowEntry); |
| 700 | idx++; |
| 701 | continue; |
| 702 | } |
| 703 | |
| 704 | if (oldFlowEntry != null) { |
| 705 | // |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 706 | // The old Flow Entry should be deleted: path diverges |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 707 | // |
| 708 | oldFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 709 | oldFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 710 | deletedFlowEntries.add(oldFlowEntry); |
| 711 | } |
| 712 | |
| 713 | // |
| 714 | // Add the new Flow Entry |
| 715 | // |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 716 | // |
| 717 | // NOTE: Assign only the Flow ID. |
| 718 | // The Flow Entry ID is assigned later only for the Flow Entries |
| 719 | // this instance is responsible for. |
| 720 | // |
| 721 | newFlowEntry.setFlowId(new FlowId(flowPath.flowId().value())); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 722 | |
| 723 | // Set the incoming port matching |
| 724 | FlowEntryMatch flowEntryMatch = new FlowEntryMatch(); |
| 725 | newFlowEntry.setFlowEntryMatch(flowEntryMatch); |
| 726 | flowEntryMatch.enableInPort(newFlowEntry.inPort()); |
| 727 | |
| 728 | // |
| 729 | // Set the actions: |
| 730 | // If the first Flow Entry, copy the Flow Path actions to it. |
| 731 | // |
| 732 | FlowEntryActions flowEntryActions = newFlowEntry.flowEntryActions(); |
| 733 | if ((idx == 0) && (flowPath.flowEntryActions() != null)) { |
| 734 | FlowEntryActions flowActions = |
| 735 | new FlowEntryActions(flowPath.flowEntryActions()); |
| 736 | for (FlowEntryAction action : flowActions.actions()) |
| 737 | flowEntryActions.addAction(action); |
| 738 | } |
| 739 | idx++; |
| 740 | |
| 741 | // |
| 742 | // Add the outgoing port output action |
| 743 | // |
| 744 | FlowEntryAction flowEntryAction = new FlowEntryAction(); |
| 745 | flowEntryAction.setActionOutput(newFlowEntry.outPort()); |
| 746 | flowEntryActions.addAction(flowEntryAction); |
| 747 | |
| 748 | // |
| 749 | // Set the state of the new Flow Entry |
| 750 | // |
| 751 | newFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_ADD); |
| 752 | newFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 753 | finalFlowEntries.add(newFlowEntry); |
| 754 | } |
| 755 | |
| 756 | // |
| 757 | // Replace the old Flow Entries with the new Flow Entries. |
| 758 | // Note that the Flow Entries that will be deleted are added at |
| 759 | // the end. |
| 760 | // |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 761 | finalFlowEntries.addAll(deletedFlowEntries); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 762 | flowPath.dataPath().setFlowEntries(finalFlowEntries); |
| 763 | |
| 764 | return hasChanged; |
| 765 | } |
| 766 | |
| 767 | /** |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 768 | * Receive a notification that a Flow is added. |
| 769 | * |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 770 | * @param flowPath the Flow that is added. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 771 | */ |
| 772 | @Override |
| 773 | public void notificationRecvFlowAdded(FlowPath flowPath) { |
| 774 | EventEntry<FlowPath> eventEntry = |
| 775 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 776 | networkEvents.add(eventEntry); |
| 777 | } |
| 778 | |
| 779 | /** |
| 780 | * Receive a notification that a Flow is removed. |
| 781 | * |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 782 | * @param flowPath the Flow that is removed. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 783 | */ |
| 784 | @Override |
| 785 | public void notificationRecvFlowRemoved(FlowPath flowPath) { |
| 786 | EventEntry<FlowPath> eventEntry = |
| 787 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_REMOVE, flowPath); |
| 788 | networkEvents.add(eventEntry); |
| 789 | } |
| 790 | |
| 791 | /** |
| 792 | * Receive a notification that a Flow is updated. |
| 793 | * |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 794 | * @param flowPath the Flow that is updated. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 795 | */ |
| 796 | @Override |
| 797 | public void notificationRecvFlowUpdated(FlowPath flowPath) { |
| 798 | // NOTE: The ADD and UPDATE events are processed in same way |
| 799 | EventEntry<FlowPath> eventEntry = |
| 800 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 801 | networkEvents.add(eventEntry); |
| 802 | } |
| 803 | |
| 804 | /** |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 805 | * Receive a notification that a FlowEntry is added. |
| 806 | * |
| 807 | * @param flowEntry the FlowEntry that is added. |
| 808 | */ |
| 809 | @Override |
| 810 | public void notificationRecvFlowEntryAdded(FlowEntry flowEntry) { |
| 811 | EventEntry<FlowEntry> eventEntry = |
| 812 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_ADD, flowEntry); |
| 813 | networkEvents.add(eventEntry); |
| 814 | } |
| 815 | |
| 816 | /** |
| 817 | * Receive a notification that a FlowEntry is removed. |
| 818 | * |
| 819 | * @param flowEntry the FlowEntry that is removed. |
| 820 | */ |
| 821 | @Override |
| 822 | public void notificationRecvFlowEntryRemoved(FlowEntry flowEntry) { |
| 823 | EventEntry<FlowEntry> eventEntry = |
| 824 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_REMOVE, flowEntry); |
| 825 | networkEvents.add(eventEntry); |
| 826 | } |
| 827 | |
| 828 | /** |
| 829 | * Receive a notification that a FlowEntry is updated. |
| 830 | * |
| 831 | * @param flowEntry the FlowEntry that is updated. |
| 832 | */ |
| 833 | @Override |
| 834 | public void notificationRecvFlowEntryUpdated(FlowEntry flowEntry) { |
| 835 | // NOTE: The ADD and UPDATE events are processed in same way |
| 836 | EventEntry<FlowEntry> eventEntry = |
| 837 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_ADD, flowEntry); |
| 838 | networkEvents.add(eventEntry); |
| 839 | } |
| 840 | |
| 841 | /** |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 842 | * Receive a notification that a Topology Element is added. |
| 843 | * |
| 844 | * @param topologyElement the Topology Element that is added. |
| 845 | */ |
| 846 | @Override |
| 847 | public void notificationRecvTopologyElementAdded(TopologyElement topologyElement) { |
| 848 | EventEntry<TopologyElement> eventEntry = |
| 849 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 850 | networkEvents.add(eventEntry); |
| 851 | } |
| 852 | |
| 853 | /** |
| 854 | * Receive a notification that a Topology Element is removed. |
| 855 | * |
| 856 | * @param topologyElement the Topology Element that is removed. |
| 857 | */ |
| 858 | @Override |
| 859 | public void notificationRecvTopologyElementRemoved(TopologyElement topologyElement) { |
| 860 | EventEntry<TopologyElement> eventEntry = |
| 861 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_REMOVE, topologyElement); |
| 862 | networkEvents.add(eventEntry); |
| 863 | } |
| 864 | |
| 865 | /** |
| 866 | * Receive a notification that a Topology Element is updated. |
| 867 | * |
| 868 | * @param topologyElement the Topology Element that is updated. |
| 869 | */ |
| 870 | @Override |
| 871 | public void notificationRecvTopologyElementUpdated(TopologyElement topologyElement) { |
| 872 | // NOTE: The ADD and UPDATE events are processed in same way |
| 873 | EventEntry<TopologyElement> eventEntry = |
| 874 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 875 | networkEvents.add(eventEntry); |
| 876 | } |
| 877 | } |