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 | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 61 | |
| 62 | // The queue with Flow Path and Topology Element updates |
| 63 | private BlockingQueue<EventEntry<?>> networkEvents = |
| 64 | new LinkedBlockingQueue<EventEntry<?>>(); |
| 65 | |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 66 | // The pending Topology, FlowPath, and FlowEntry events |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 67 | private List<EventEntry<TopologyElement>> topologyEvents = |
| 68 | new LinkedList<EventEntry<TopologyElement>>(); |
| 69 | private List<EventEntry<FlowPath>> flowPathEvents = |
| 70 | new LinkedList<EventEntry<FlowPath>>(); |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 71 | private List<EventEntry<FlowEntry>> flowEntryEvents = |
| 72 | new LinkedList<EventEntry<FlowEntry>>(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 73 | |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 74 | // All internally computed Flow Paths |
| 75 | private Map<Long, FlowPath> allFlowPaths = new HashMap<Long, FlowPath>(); |
| 76 | |
| 77 | // The Flow Entries received as notifications with unmatched Flow Paths |
| 78 | private Map<Long, FlowEntry> unmatchedFlowEntryAdd = |
| 79 | new HashMap<Long, FlowEntry>(); |
| 80 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 81 | // |
| 82 | // Transient state for processing the Flow Paths: |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 83 | // - The Flow Paths that should be recomputed |
| 84 | // - The Flow Paths with modified Flow Entries |
| 85 | // |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 86 | private Map<Long, FlowPath> shouldRecomputeFlowPaths = |
| 87 | new HashMap<Long, FlowPath>(); |
| 88 | private Map<Long, FlowPath> modifiedFlowPaths = |
| 89 | new HashMap<Long, FlowPath>(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 90 | |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 91 | /** |
| 92 | * Constructor for a given Flow Manager and Datagrid Service. |
| 93 | * |
| 94 | * @param flowManager the Flow Manager to use. |
| 95 | * @param datagridService the Datagrid Service to use. |
| 96 | */ |
Pavlin Radoslavov | 9a85902 | 2013-10-30 10:08:24 -0700 | [diff] [blame] | 97 | FlowEventHandler(FlowManager flowManager, |
| 98 | IDatagridService datagridService) { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 99 | this.flowManager = flowManager; |
| 100 | this.datagridService = datagridService; |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 101 | this.topology = new Topology(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | /** |
Pavlin Radoslavov | ed0f4a8 | 2013-11-04 16:38:36 -0800 | [diff] [blame] | 105 | * Get the network topology. |
| 106 | * |
| 107 | * @return the network topology. |
| 108 | */ |
| 109 | protected Topology getTopology() { return this.topology; } |
| 110 | |
| 111 | /** |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 112 | * Startup processing. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 113 | */ |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 114 | private void startup() { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 115 | // |
| 116 | // Obtain the initial Topology state |
| 117 | // |
| 118 | Collection<TopologyElement> topologyElements = |
| 119 | datagridService.getAllTopologyElements(); |
| 120 | for (TopologyElement topologyElement : topologyElements) { |
| 121 | EventEntry<TopologyElement> eventEntry = |
| 122 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 123 | topologyEvents.add(eventEntry); |
| 124 | } |
| 125 | // |
| 126 | // Obtain the initial Flow Path state |
| 127 | // |
| 128 | Collection<FlowPath> flowPaths = datagridService.getAllFlows(); |
| 129 | for (FlowPath flowPath : flowPaths) { |
| 130 | EventEntry<FlowPath> eventEntry = |
| 131 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 132 | flowPathEvents.add(eventEntry); |
| 133 | } |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 134 | // |
| 135 | // Obtain the initial FlowEntry state |
| 136 | // |
| 137 | Collection<FlowEntry> flowEntries = datagridService.getAllFlowEntries(); |
| 138 | for (FlowEntry flowEntry : flowEntries) { |
| 139 | EventEntry<FlowEntry> eventEntry = |
| 140 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_ADD, flowEntry); |
| 141 | flowEntryEvents.add(eventEntry); |
| 142 | } |
| 143 | |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 144 | // Process the initial events (if any) |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 145 | processEvents(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | /** |
| 149 | * Run the thread. |
| 150 | */ |
| 151 | @Override |
| 152 | public void run() { |
| 153 | startup(); |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 154 | |
| 155 | // |
| 156 | // The main loop |
| 157 | // |
| 158 | Collection<EventEntry<?>> collection = new LinkedList<EventEntry<?>>(); |
| 159 | try { |
| 160 | while (true) { |
| 161 | EventEntry<?> eventEntry = networkEvents.take(); |
| 162 | collection.add(eventEntry); |
| 163 | networkEvents.drainTo(collection); |
| 164 | |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 165 | // |
| 166 | // Demultiplex all events: |
| 167 | // - EventEntry<TopologyElement> |
| 168 | // - EventEntry<FlowPath> |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 169 | // - EventEntry<FlowEntry> |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 170 | // |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 171 | for (EventEntry<?> event : collection) { |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame] | 172 | // Topology event |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 173 | if (event.eventData() instanceof TopologyElement) { |
| 174 | EventEntry<TopologyElement> topologyEventEntry = |
| 175 | (EventEntry<TopologyElement>)event; |
| 176 | topologyEvents.add(topologyEventEntry); |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame] | 177 | continue; |
| 178 | } |
| 179 | |
| 180 | // FlowPath event |
| 181 | if (event.eventData() instanceof FlowPath) { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 182 | EventEntry<FlowPath> flowPathEventEntry = |
| 183 | (EventEntry<FlowPath>)event; |
| 184 | flowPathEvents.add(flowPathEventEntry); |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame] | 185 | continue; |
| 186 | } |
| 187 | |
| 188 | // FlowEntry event |
| 189 | if (event.eventData() instanceof FlowEntry) { |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 190 | EventEntry<FlowEntry> flowEntryEventEntry = |
| 191 | (EventEntry<FlowEntry>)event; |
| 192 | flowEntryEvents.add(flowEntryEventEntry); |
Pavlin Radoslavov | c8038a8 | 2013-12-02 17:43:20 -0800 | [diff] [blame] | 193 | continue; |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 194 | } |
| 195 | } |
| 196 | collection.clear(); |
Pavlin Radoslavov | ed4c7a9 | 2013-10-26 21:36:21 -0700 | [diff] [blame] | 197 | |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 198 | // Process the events (if any) |
| 199 | processEvents(); |
| 200 | } |
| 201 | } catch (Exception exception) { |
| 202 | log.debug("Exception processing Network Events: ", exception); |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * Process the events (if any) |
| 208 | */ |
| 209 | private void processEvents() { |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 210 | List<FlowPathEntryPair> modifiedFlowEntries; |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 211 | |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 212 | if (topologyEvents.isEmpty() && flowPathEvents.isEmpty() && |
| 213 | flowEntryEvents.isEmpty()) { |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 214 | return; // Nothing to do |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 215 | } |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 216 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 217 | processFlowPathEvents(); |
| 218 | processTopologyEvents(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 219 | processFlowEntryEvents(); |
| 220 | |
| 221 | // Recompute all affected Flow Paths and keep only the modified |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 222 | for (FlowPath flowPath : shouldRecomputeFlowPaths.values()) { |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 223 | if (recomputeFlowPath(flowPath)) |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 224 | modifiedFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 225 | } |
| 226 | |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 227 | // Extract the modified Flow Entries |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 228 | modifiedFlowEntries = extractModifiedFlowEntries(modifiedFlowPaths); |
| 229 | |
| 230 | // Assign missing Flow Entry IDs |
| 231 | assignFlowEntryId(modifiedFlowEntries); |
| 232 | |
| 233 | // |
| 234 | // Push the modified Flow Entries to switches, datagrid and database |
| 235 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 236 | flowManager.pushModifiedFlowEntriesToSwitches(modifiedFlowEntries); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 237 | flowManager.pushModifiedFlowEntriesToDatagrid(modifiedFlowEntries); |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 238 | flowManager.pushModifiedFlowPathsToDatabase(modifiedFlowPaths.values()); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 239 | |
| 240 | // |
| 241 | // Remove Flow Entries that were deleted |
| 242 | // |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 243 | for (FlowPath flowPath : modifiedFlowPaths.values()) |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 244 | flowPath.dataPath().removeDeletedFlowEntries(); |
| 245 | |
| 246 | // Cleanup |
| 247 | topologyEvents.clear(); |
| 248 | flowPathEvents.clear(); |
| 249 | flowEntryEvents.clear(); |
| 250 | // |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 251 | shouldRecomputeFlowPaths.clear(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 252 | modifiedFlowPaths.clear(); |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * Extract the modified Flow Entries. |
| 257 | */ |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 258 | private List<FlowPathEntryPair> extractModifiedFlowEntries( |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 259 | Map<Long, FlowPath> modifiedFlowPaths) { |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 260 | List<FlowPathEntryPair> modifiedFlowEntries = |
| 261 | new LinkedList<FlowPathEntryPair>(); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 262 | |
| 263 | // Extract only the modified Flow Entries |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 264 | for (FlowPath flowPath : modifiedFlowPaths.values()) { |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 265 | for (FlowEntry flowEntry : flowPath.flowEntries()) { |
| 266 | if (flowEntry.flowEntrySwitchState() == |
| 267 | FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED) { |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 268 | FlowPathEntryPair flowPair = |
| 269 | new FlowPathEntryPair(flowPath, flowEntry); |
| 270 | modifiedFlowEntries.add(flowPair); |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 271 | } |
| 272 | } |
| 273 | } |
| 274 | return modifiedFlowEntries; |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * Assign the Flow Entry ID as needed. |
| 279 | */ |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 280 | private void assignFlowEntryId(List<FlowPathEntryPair> modifiedFlowEntries) { |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 281 | if (modifiedFlowEntries.isEmpty()) |
| 282 | return; |
| 283 | |
| 284 | Map<Long, IOFSwitch> mySwitches = flowManager.getMySwitches(); |
| 285 | |
| 286 | // |
| 287 | // Assign the Flow Entry ID only for Flow Entries for my switches |
| 288 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 289 | for (FlowPathEntryPair flowPair : modifiedFlowEntries) { |
| 290 | FlowEntry flowEntry = flowPair.flowEntry; |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 291 | // Update the Flow Entries only for my switches |
| 292 | IOFSwitch mySwitch = mySwitches.get(flowEntry.dpid().value()); |
| 293 | if (mySwitch == null) |
| 294 | continue; |
| 295 | if (! flowEntry.isValidFlowEntryId()) { |
| 296 | long id = flowManager.getNextFlowEntryId(); |
| 297 | flowEntry.setFlowEntryId(new FlowEntryId(id)); |
| 298 | } |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | /** |
| 303 | * Process the Flow Path events. |
| 304 | */ |
| 305 | private void processFlowPathEvents() { |
| 306 | // |
| 307 | // Process all Flow Path events and update the appropriate state |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 308 | // |
| 309 | for (EventEntry<FlowPath> eventEntry : flowPathEvents) { |
| 310 | FlowPath flowPath = eventEntry.eventData(); |
| 311 | |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 312 | log.debug("Flow Event: {} {}", eventEntry.eventType(), |
| 313 | flowPath.toString()); |
| 314 | |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 315 | switch (eventEntry.eventType()) { |
| 316 | case ENTRY_ADD: { |
| 317 | // |
| 318 | // Add a new Flow Path |
| 319 | // |
| 320 | if (allFlowPaths.get(flowPath.flowId().value()) != null) { |
| 321 | // |
| 322 | // TODO: What to do if the Flow Path already exists? |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 323 | // Fow now, we just re-add it. |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 324 | // |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 325 | } |
| 326 | |
| 327 | switch (flowPath.flowPathType()) { |
| 328 | case FP_TYPE_SHORTEST_PATH: |
| 329 | // |
| 330 | // Reset the Data Path, in case it was set already, because |
| 331 | // we are going to recompute it anyway. |
| 332 | // |
| 333 | flowPath.flowEntries().clear(); |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 334 | shouldRecomputeFlowPaths.put(flowPath.flowId().value(), |
| 335 | flowPath); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 336 | break; |
| 337 | case FP_TYPE_EXPLICIT_PATH: |
| 338 | // |
| 339 | // Mark all Flow Entries for installation in the switches. |
| 340 | // |
| 341 | for (FlowEntry flowEntry : flowPath.flowEntries()) { |
| 342 | flowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 343 | } |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 344 | modifiedFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 345 | break; |
| 346 | } |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 347 | allFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 348 | |
| 349 | break; |
| 350 | } |
| 351 | |
| 352 | case ENTRY_REMOVE: { |
| 353 | // |
| 354 | // Remove an existing Flow Path. |
| 355 | // |
| 356 | // Find the Flow Path, and mark the Flow and its Flow Entries |
| 357 | // for deletion. |
| 358 | // |
| 359 | FlowPath existingFlowPath = |
| 360 | allFlowPaths.get(flowPath.flowId().value()); |
| 361 | if (existingFlowPath == null) |
| 362 | continue; // Nothing to do |
| 363 | |
| 364 | existingFlowPath.setFlowPathUserState(FlowPathUserState.FP_USER_DELETE); |
| 365 | for (FlowEntry flowEntry : existingFlowPath.flowEntries()) { |
| 366 | flowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 367 | flowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 368 | } |
| 369 | |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 370 | // Remove the Flow Path from the internal state |
| 371 | Long key = existingFlowPath.flowId().value(); |
| 372 | allFlowPaths.remove(key); |
| 373 | shouldRecomputeFlowPaths.remove(key); |
| 374 | modifiedFlowPaths.put(key, existingFlowPath); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 375 | |
| 376 | break; |
| 377 | } |
| 378 | } |
| 379 | } |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 380 | } |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 381 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 382 | /** |
| 383 | * Process the Topology events. |
| 384 | */ |
| 385 | private void processTopologyEvents() { |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 386 | // |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 387 | // Process all Topology events and update the appropriate state |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 388 | // |
| 389 | boolean isTopologyModified = false; |
| 390 | for (EventEntry<TopologyElement> eventEntry : topologyEvents) { |
| 391 | TopologyElement topologyElement = eventEntry.eventData(); |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 392 | |
| 393 | log.debug("Topology Event: {} {}", eventEntry.eventType(), |
| 394 | topologyElement.toString()); |
| 395 | |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 396 | switch (eventEntry.eventType()) { |
| 397 | case ENTRY_ADD: |
Yuta HIGUCHI | b32f77f | 2013-10-30 15:36:32 -0700 | [diff] [blame] | 398 | isTopologyModified |= topology.addTopologyElement(topologyElement); |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 399 | break; |
| 400 | case ENTRY_REMOVE: |
Yuta HIGUCHI | b32f77f | 2013-10-30 15:36:32 -0700 | [diff] [blame] | 401 | isTopologyModified |= topology.removeTopologyElement(topologyElement); |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 402 | break; |
| 403 | } |
| 404 | } |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 405 | if (isTopologyModified) { |
| 406 | // TODO: For now, if the topology changes, we recompute all Flows |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 407 | shouldRecomputeFlowPaths.putAll(allFlowPaths); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 408 | } |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 409 | } |
Pavlin Radoslavov | a23e541 | 2013-10-27 19:56:40 -0700 | [diff] [blame] | 410 | |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 411 | /** |
| 412 | * Process the Flow Entry events. |
| 413 | */ |
| 414 | private void processFlowEntryEvents() { |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 415 | FlowPathEntryPair flowPair; |
| 416 | FlowPath flowPath; |
| 417 | FlowEntry updatedFlowEntry; |
| 418 | |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 419 | // |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 420 | // Update Flow Entries with previously unmatched Flow Entry updates |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 421 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 422 | if (! unmatchedFlowEntryAdd.isEmpty()) { |
| 423 | Map<Long, FlowEntry> remainingUpdates = new HashMap<Long, FlowEntry>(); |
| 424 | for (FlowEntry flowEntry : unmatchedFlowEntryAdd.values()) { |
| 425 | flowPath = allFlowPaths.get(flowEntry.flowId().value()); |
| 426 | if (flowPath == null) |
| 427 | continue; |
| 428 | updatedFlowEntry = updateFlowEntryAdd(flowPath, flowEntry); |
| 429 | if (updatedFlowEntry == null) { |
| 430 | remainingUpdates.put(flowEntry.flowEntryId().value(), |
| 431 | flowEntry); |
| 432 | continue; |
| 433 | } |
| 434 | flowPair = new FlowPathEntryPair(flowPath, updatedFlowEntry); |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 435 | modifiedFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 436 | } |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 437 | unmatchedFlowEntryAdd = remainingUpdates; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | // |
Pavlin Radoslavov | 9f33edb | 2013-11-06 18:24:37 -0800 | [diff] [blame] | 441 | // Process all Flow Entry events and update the appropriate state |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 442 | // |
| 443 | for (EventEntry<FlowEntry> eventEntry : flowEntryEvents) { |
| 444 | FlowEntry flowEntry = eventEntry.eventData(); |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 445 | |
| 446 | log.debug("Flow Entry Event: {} {}", eventEntry.eventType(), |
| 447 | flowEntry.toString()); |
| 448 | |
| 449 | if ((! flowEntry.isValidFlowId()) || |
| 450 | (! flowEntry.isValidFlowEntryId())) { |
| 451 | continue; |
| 452 | } |
| 453 | |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 454 | switch (eventEntry.eventType()) { |
| 455 | case ENTRY_ADD: |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 456 | flowPath = allFlowPaths.get(flowEntry.flowId().value()); |
| 457 | if (flowPath == null) { |
| 458 | // Flow Path not found: keep the entry for later matching |
| 459 | unmatchedFlowEntryAdd.put(flowEntry.flowEntryId().value(), |
| 460 | flowEntry); |
| 461 | break; |
| 462 | } |
| 463 | updatedFlowEntry = updateFlowEntryAdd(flowPath, flowEntry); |
| 464 | if (updatedFlowEntry == null) { |
| 465 | // Flow Entry not found: keep the entry for later matching |
| 466 | unmatchedFlowEntryAdd.put(flowEntry.flowEntryId().value(), |
| 467 | flowEntry); |
| 468 | break; |
| 469 | } |
| 470 | // Add the updated entry to the list of updated Flow Entries |
| 471 | flowPair = new FlowPathEntryPair(flowPath, updatedFlowEntry); |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 472 | modifiedFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 473 | break; |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 474 | |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 475 | case ENTRY_REMOVE: |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 476 | flowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 477 | if (unmatchedFlowEntryAdd.remove(flowEntry.flowEntryId().value()) != null) { |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 478 | continue; // Removed previously unmatched entry |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 479 | } |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 480 | |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 481 | flowPath = allFlowPaths.get(flowEntry.flowId().value()); |
| 482 | if (flowPath == null) { |
| 483 | // Flow Path not found: ignore the update |
| 484 | break; |
| 485 | } |
| 486 | updatedFlowEntry = updateFlowEntryRemove(flowPath, flowEntry); |
| 487 | if (updatedFlowEntry == null) { |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 488 | // Flow Entry not found: ignore it |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 489 | break; |
| 490 | } |
| 491 | flowPair = new FlowPathEntryPair(flowPath, updatedFlowEntry); |
Pavlin Radoslavov | 2fca8d1 | 2013-12-04 09:39:06 -0800 | [diff] [blame] | 492 | modifiedFlowPaths.put(flowPath.flowId().value(), flowPath); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 493 | break; |
| 494 | } |
| 495 | } |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 496 | } |
| 497 | |
| 498 | /** |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 499 | * Update a Flow Entry because of an external ENTRY_ADD event. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 500 | * |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 501 | * @param flowPath the FlowPath for the Flow Entry to update. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 502 | * @param flowEntry the FlowEntry with the new state. |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 503 | * @return the updated Flow Entry if found, otherwise null. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 504 | */ |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 505 | private FlowEntry updateFlowEntryAdd(FlowPath flowPath, |
| 506 | FlowEntry flowEntry) { |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 507 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 508 | // Iterate over all Flow Entries and find a match. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 509 | // |
| 510 | for (FlowEntry localFlowEntry : flowPath.flowEntries()) { |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 511 | if (! TopologyManager.isSameFlowEntryDataPath(localFlowEntry, |
| 512 | flowEntry)) { |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 513 | continue; |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 514 | } |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 515 | |
| 516 | // |
| 517 | // Local Flow Entry match found |
| 518 | // |
| 519 | if (localFlowEntry.isValidFlowEntryId()) { |
| 520 | if (localFlowEntry.flowEntryId().value() != |
| 521 | flowEntry.flowEntryId().value()) { |
| 522 | // |
| 523 | // Find a local Flow Entry, but the Flow Entry ID doesn't |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 524 | // match. Keep looking. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 525 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 526 | continue; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 527 | } |
| 528 | } else { |
| 529 | // Update the Flow Entry ID |
| 530 | FlowEntryId flowEntryId = |
| 531 | new FlowEntryId(flowEntry.flowEntryId().value()); |
| 532 | localFlowEntry.setFlowEntryId(flowEntryId); |
| 533 | } |
| 534 | |
| 535 | // |
| 536 | // Update the local Flow Entry. |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 537 | // |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 538 | localFlowEntry.setFlowEntryUserState(flowEntry.flowEntryUserState()); |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 539 | localFlowEntry.setFlowEntrySwitchState(flowEntry.flowEntrySwitchState()); |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 540 | return localFlowEntry; |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 541 | } |
| 542 | |
Pavlin Radoslavov | 6311717 | 2013-11-07 02:18:37 -0800 | [diff] [blame] | 543 | return null; // Entry not found |
| 544 | } |
| 545 | |
| 546 | /** |
| 547 | * Update a Flow Entry because of an external ENTRY_REMOVE event. |
| 548 | * |
| 549 | * @param flowPath the FlowPath for the Flow Entry to update. |
| 550 | * @param flowEntry the FlowEntry with the new state. |
| 551 | * @return the updated Flow Entry if found, otherwise null. |
| 552 | */ |
| 553 | private FlowEntry updateFlowEntryRemove(FlowPath flowPath, |
| 554 | FlowEntry flowEntry) { |
| 555 | // |
| 556 | // Iterate over all Flow Entries and find a match based on |
| 557 | // the Flow Entry ID. |
| 558 | // |
| 559 | for (FlowEntry localFlowEntry : flowPath.flowEntries()) { |
| 560 | if (! localFlowEntry.isValidFlowEntryId()) |
| 561 | continue; |
| 562 | if (localFlowEntry.flowEntryId().value() != |
| 563 | flowEntry.flowEntryId().value()) { |
| 564 | continue; |
| 565 | } |
| 566 | // |
| 567 | // Update the local Flow Entry. |
| 568 | // |
| 569 | localFlowEntry.setFlowEntryUserState(flowEntry.flowEntryUserState()); |
| 570 | localFlowEntry.setFlowEntrySwitchState(flowEntry.flowEntrySwitchState()); |
| 571 | return localFlowEntry; |
| 572 | } |
| 573 | |
| 574 | return null; // Entry not found |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 575 | } |
| 576 | |
| 577 | /** |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 578 | * Recompute a Flow Path. |
| 579 | * |
| 580 | * @param flowPath the Flow Path to recompute. |
| 581 | * @return true if the recomputed Flow Path has changed, otherwise false. |
| 582 | */ |
| 583 | private boolean recomputeFlowPath(FlowPath flowPath) { |
| 584 | boolean hasChanged = false; |
| 585 | |
| 586 | // |
| 587 | // Test whether the Flow Path needs to be recomputed |
| 588 | // |
| 589 | switch (flowPath.flowPathType()) { |
Yuta HIGUCHI | e1038fb | 2013-10-30 15:35:18 -0700 | [diff] [blame] | 590 | case FP_TYPE_UNKNOWN: |
| 591 | return false; // Can't recompute on Unknown FlowType |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 592 | case FP_TYPE_SHORTEST_PATH: |
| 593 | break; |
| 594 | case FP_TYPE_EXPLICIT_PATH: |
| 595 | return false; // An explicit path never changes |
| 596 | } |
| 597 | |
| 598 | DataPath oldDataPath = flowPath.dataPath(); |
| 599 | |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 600 | // Compute the new path |
| 601 | DataPath newDataPath = TopologyManager.computeNetworkPath(topology, |
| 602 | flowPath); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 603 | if (newDataPath == null) { |
| 604 | // We need the DataPath to compare the paths |
| 605 | newDataPath = new DataPath(); |
| 606 | } |
| 607 | newDataPath.applyFlowPathFlags(flowPath.flowPathFlags()); |
| 608 | |
| 609 | // |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 610 | // Test whether the new path is same |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 611 | // |
| 612 | if (oldDataPath.flowEntries().size() != |
| 613 | newDataPath.flowEntries().size()) { |
| 614 | hasChanged = true; |
| 615 | } else { |
| 616 | Iterator<FlowEntry> oldIter = oldDataPath.flowEntries().iterator(); |
| 617 | Iterator<FlowEntry> newIter = newDataPath.flowEntries().iterator(); |
| 618 | while (oldIter.hasNext() && newIter.hasNext()) { |
| 619 | FlowEntry oldFlowEntry = oldIter.next(); |
| 620 | FlowEntry newFlowEntry = newIter.next(); |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 621 | if (! TopologyManager.isSameFlowEntryDataPath(oldFlowEntry, |
| 622 | newFlowEntry)) { |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 623 | hasChanged = true; |
| 624 | break; |
| 625 | } |
| 626 | } |
| 627 | } |
| 628 | if (! hasChanged) |
| 629 | return hasChanged; |
| 630 | |
| 631 | // |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 632 | // Merge the changes in the path: |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 633 | // - If a Flow Entry for a switch is in the old data path, but not |
| 634 | // in the new data path, then mark it for deletion. |
| 635 | // - If a Flow Entry for a switch is in the new data path, but not |
| 636 | // in the old data path, then mark it for addition. |
| 637 | // - If a Flow Entry for a switch is in both the old and the new |
| 638 | // data path, but it has changed, e.g., the incoming and/or outgoing |
| 639 | // port(s), then mark the old Flow Entry for deletion, and mark |
| 640 | // the new Flow Entry for addition. |
| 641 | // - If a Flow Entry for a switch is in both the old and the new |
| 642 | // data path, and it hasn't changed, then just keep it. |
| 643 | // |
| 644 | // NOTE: We use the Switch DPID of each entry to match the entries |
| 645 | // |
| 646 | Map<Long, FlowEntry> oldFlowEntriesMap = new HashMap<Long, FlowEntry>(); |
| 647 | Map<Long, FlowEntry> newFlowEntriesMap = new HashMap<Long, FlowEntry>(); |
| 648 | ArrayList<FlowEntry> finalFlowEntries = new ArrayList<FlowEntry>(); |
| 649 | List<FlowEntry> deletedFlowEntries = new LinkedList<FlowEntry>(); |
| 650 | |
| 651 | // Prepare maps with the Flow Entries, so they are fast to lookup |
| 652 | for (FlowEntry flowEntry : oldDataPath.flowEntries()) |
| 653 | oldFlowEntriesMap.put(flowEntry.dpid().value(), flowEntry); |
| 654 | for (FlowEntry flowEntry : newDataPath.flowEntries()) |
| 655 | newFlowEntriesMap.put(flowEntry.dpid().value(), flowEntry); |
| 656 | |
| 657 | // |
| 658 | // Find the old Flow Entries that should be deleted |
| 659 | // |
| 660 | for (FlowEntry oldFlowEntry : oldDataPath.flowEntries()) { |
| 661 | FlowEntry newFlowEntry = |
| 662 | newFlowEntriesMap.get(oldFlowEntry.dpid().value()); |
| 663 | if (newFlowEntry == null) { |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 664 | // The old Flow Entry should be deleted: not on the path |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 665 | oldFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 666 | oldFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 667 | deletedFlowEntries.add(oldFlowEntry); |
| 668 | } |
| 669 | } |
| 670 | |
| 671 | // |
| 672 | // Find the new Flow Entries that should be added or updated |
| 673 | // |
| 674 | int idx = 0; |
| 675 | for (FlowEntry newFlowEntry : newDataPath.flowEntries()) { |
| 676 | FlowEntry oldFlowEntry = |
| 677 | oldFlowEntriesMap.get(newFlowEntry.dpid().value()); |
| 678 | |
| 679 | if ((oldFlowEntry != null) && |
Pavlin Radoslavov | 3ecd41e | 2013-10-29 14:29:30 -0700 | [diff] [blame] | 680 | TopologyManager.isSameFlowEntryDataPath(oldFlowEntry, |
| 681 | newFlowEntry)) { |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 682 | // |
| 683 | // Both Flow Entries are same |
| 684 | // |
| 685 | finalFlowEntries.add(oldFlowEntry); |
| 686 | idx++; |
| 687 | continue; |
| 688 | } |
| 689 | |
| 690 | if (oldFlowEntry != null) { |
| 691 | // |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 692 | // The old Flow Entry should be deleted: path diverges |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 693 | // |
| 694 | oldFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_DELETE); |
| 695 | oldFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 696 | deletedFlowEntries.add(oldFlowEntry); |
| 697 | } |
| 698 | |
| 699 | // |
| 700 | // Add the new Flow Entry |
| 701 | // |
Pavlin Radoslavov | 1c24f22 | 2013-10-30 13:56:46 -0700 | [diff] [blame] | 702 | // |
| 703 | // NOTE: Assign only the Flow ID. |
| 704 | // The Flow Entry ID is assigned later only for the Flow Entries |
| 705 | // this instance is responsible for. |
| 706 | // |
| 707 | newFlowEntry.setFlowId(new FlowId(flowPath.flowId().value())); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 708 | |
Pavlin Radoslavov | a4df952 | 2013-12-03 11:03:04 -0800 | [diff] [blame] | 709 | // |
| 710 | // Allocate the FlowEntryMatch by copying the default one |
| 711 | // from the FlowPath (if set). |
| 712 | // |
| 713 | FlowEntryMatch flowEntryMatch = null; |
| 714 | if (flowPath.flowEntryMatch() != null) |
| 715 | flowEntryMatch = new FlowEntryMatch(flowPath.flowEntryMatch()); |
| 716 | else |
| 717 | flowEntryMatch = new FlowEntryMatch(); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 718 | newFlowEntry.setFlowEntryMatch(flowEntryMatch); |
Pavlin Radoslavov | a4df952 | 2013-12-03 11:03:04 -0800 | [diff] [blame] | 719 | |
| 720 | // Set the incoming port matching |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 721 | flowEntryMatch.enableInPort(newFlowEntry.inPort()); |
| 722 | |
| 723 | // |
| 724 | // Set the actions: |
| 725 | // If the first Flow Entry, copy the Flow Path actions to it. |
| 726 | // |
| 727 | FlowEntryActions flowEntryActions = newFlowEntry.flowEntryActions(); |
| 728 | if ((idx == 0) && (flowPath.flowEntryActions() != null)) { |
| 729 | FlowEntryActions flowActions = |
| 730 | new FlowEntryActions(flowPath.flowEntryActions()); |
| 731 | for (FlowEntryAction action : flowActions.actions()) |
| 732 | flowEntryActions.addAction(action); |
| 733 | } |
| 734 | idx++; |
| 735 | |
| 736 | // |
| 737 | // Add the outgoing port output action |
| 738 | // |
| 739 | FlowEntryAction flowEntryAction = new FlowEntryAction(); |
| 740 | flowEntryAction.setActionOutput(newFlowEntry.outPort()); |
| 741 | flowEntryActions.addAction(flowEntryAction); |
| 742 | |
| 743 | // |
| 744 | // Set the state of the new Flow Entry |
| 745 | // |
| 746 | newFlowEntry.setFlowEntryUserState(FlowEntryUserState.FE_USER_ADD); |
| 747 | newFlowEntry.setFlowEntrySwitchState(FlowEntrySwitchState.FE_SWITCH_NOT_UPDATED); |
| 748 | finalFlowEntries.add(newFlowEntry); |
| 749 | } |
| 750 | |
| 751 | // |
| 752 | // Replace the old Flow Entries with the new Flow Entries. |
| 753 | // Note that the Flow Entries that will be deleted are added at |
| 754 | // the end. |
| 755 | // |
Pavlin Radoslavov | fb94edc | 2013-11-04 16:29:40 -0800 | [diff] [blame] | 756 | finalFlowEntries.addAll(deletedFlowEntries); |
Pavlin Radoslavov | fb06a9e | 2013-10-28 23:56:15 -0700 | [diff] [blame] | 757 | flowPath.dataPath().setFlowEntries(finalFlowEntries); |
| 758 | |
| 759 | return hasChanged; |
| 760 | } |
| 761 | |
| 762 | /** |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 763 | * Receive a notification that a Flow is added. |
| 764 | * |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 765 | * @param flowPath the Flow that is added. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 766 | */ |
| 767 | @Override |
| 768 | public void notificationRecvFlowAdded(FlowPath flowPath) { |
| 769 | EventEntry<FlowPath> eventEntry = |
| 770 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 771 | networkEvents.add(eventEntry); |
| 772 | } |
| 773 | |
| 774 | /** |
| 775 | * Receive a notification that a Flow is removed. |
| 776 | * |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 777 | * @param flowPath the Flow that is removed. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 778 | */ |
| 779 | @Override |
| 780 | public void notificationRecvFlowRemoved(FlowPath flowPath) { |
| 781 | EventEntry<FlowPath> eventEntry = |
| 782 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_REMOVE, flowPath); |
| 783 | networkEvents.add(eventEntry); |
| 784 | } |
| 785 | |
| 786 | /** |
| 787 | * Receive a notification that a Flow is updated. |
| 788 | * |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 789 | * @param flowPath the Flow that is updated. |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 790 | */ |
| 791 | @Override |
| 792 | public void notificationRecvFlowUpdated(FlowPath flowPath) { |
| 793 | // NOTE: The ADD and UPDATE events are processed in same way |
| 794 | EventEntry<FlowPath> eventEntry = |
| 795 | new EventEntry<FlowPath>(EventEntry.Type.ENTRY_ADD, flowPath); |
| 796 | networkEvents.add(eventEntry); |
| 797 | } |
| 798 | |
| 799 | /** |
Pavlin Radoslavov | b750684 | 2013-10-29 17:46:54 -0700 | [diff] [blame] | 800 | * Receive a notification that a FlowEntry is added. |
| 801 | * |
| 802 | * @param flowEntry the FlowEntry that is added. |
| 803 | */ |
| 804 | @Override |
| 805 | public void notificationRecvFlowEntryAdded(FlowEntry flowEntry) { |
| 806 | EventEntry<FlowEntry> eventEntry = |
| 807 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_ADD, flowEntry); |
| 808 | networkEvents.add(eventEntry); |
| 809 | } |
| 810 | |
| 811 | /** |
| 812 | * Receive a notification that a FlowEntry is removed. |
| 813 | * |
| 814 | * @param flowEntry the FlowEntry that is removed. |
| 815 | */ |
| 816 | @Override |
| 817 | public void notificationRecvFlowEntryRemoved(FlowEntry flowEntry) { |
| 818 | EventEntry<FlowEntry> eventEntry = |
| 819 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_REMOVE, flowEntry); |
| 820 | networkEvents.add(eventEntry); |
| 821 | } |
| 822 | |
| 823 | /** |
| 824 | * Receive a notification that a FlowEntry is updated. |
| 825 | * |
| 826 | * @param flowEntry the FlowEntry that is updated. |
| 827 | */ |
| 828 | @Override |
| 829 | public void notificationRecvFlowEntryUpdated(FlowEntry flowEntry) { |
| 830 | // NOTE: The ADD and UPDATE events are processed in same way |
| 831 | EventEntry<FlowEntry> eventEntry = |
| 832 | new EventEntry<FlowEntry>(EventEntry.Type.ENTRY_ADD, flowEntry); |
| 833 | networkEvents.add(eventEntry); |
| 834 | } |
| 835 | |
| 836 | /** |
Pavlin Radoslavov | 6b79f2b | 2013-10-26 21:31:10 -0700 | [diff] [blame] | 837 | * Receive a notification that a Topology Element is added. |
| 838 | * |
| 839 | * @param topologyElement the Topology Element that is added. |
| 840 | */ |
| 841 | @Override |
| 842 | public void notificationRecvTopologyElementAdded(TopologyElement topologyElement) { |
| 843 | EventEntry<TopologyElement> eventEntry = |
| 844 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 845 | networkEvents.add(eventEntry); |
| 846 | } |
| 847 | |
| 848 | /** |
| 849 | * Receive a notification that a Topology Element is removed. |
| 850 | * |
| 851 | * @param topologyElement the Topology Element that is removed. |
| 852 | */ |
| 853 | @Override |
| 854 | public void notificationRecvTopologyElementRemoved(TopologyElement topologyElement) { |
| 855 | EventEntry<TopologyElement> eventEntry = |
| 856 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_REMOVE, topologyElement); |
| 857 | networkEvents.add(eventEntry); |
| 858 | } |
| 859 | |
| 860 | /** |
| 861 | * Receive a notification that a Topology Element is updated. |
| 862 | * |
| 863 | * @param topologyElement the Topology Element that is updated. |
| 864 | */ |
| 865 | @Override |
| 866 | public void notificationRecvTopologyElementUpdated(TopologyElement topologyElement) { |
| 867 | // NOTE: The ADD and UPDATE events are processed in same way |
| 868 | EventEntry<TopologyElement> eventEntry = |
| 869 | new EventEntry<TopologyElement>(EventEntry.Type.ENTRY_ADD, topologyElement); |
| 870 | networkEvents.add(eventEntry); |
| 871 | } |
| 872 | } |