| package net.onrc.onos.ofcontroller.flowprogrammer; |
| |
| import static org.junit.Assert.*; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.ExecutionException; |
| |
| import io.netty.util.concurrent.Future; |
| import net.floodlightcontroller.core.IOFSwitch; |
| import net.onrc.onos.graph.GraphDBOperation; |
| import net.onrc.onos.ofcontroller.core.INetMapTopologyObjects.IFlowEntry; |
| import net.onrc.onos.ofcontroller.core.INetMapTopologyObjects.ISwitchObject; |
| import net.onrc.onos.ofcontroller.flowmanager.FlowDatabaseOperation; |
| import net.onrc.onos.ofcontroller.util.FlowEntry; |
| import net.onrc.onos.ofcontroller.util.FlowEntryId; |
| |
| import org.easymock.EasyMock; |
| import org.easymock.IAnswer; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.openflow.protocol.OFFlowMod; |
| import org.openflow.protocol.OFMatch; |
| import org.openflow.protocol.OFMessage; |
| import org.openflow.protocol.OFStatisticsRequest; |
| import org.openflow.protocol.OFType; |
| import org.openflow.protocol.statistics.OFFlowStatisticsReply; |
| import org.openflow.protocol.statistics.OFStatistics; |
| import org.powermock.api.easymock.PowerMock; |
| import org.powermock.core.classloader.annotations.PrepareForTest; |
| import org.powermock.modules.junit4.PowerMockRunner; |
| |
| |
| @RunWith(PowerMockRunner.class) |
| @PrepareForTest({FlowSynchronizer.class, GraphDBOperation.class, FlowDatabaseOperation.class}) |
| public class FlowSynchronizerTest { |
| private FlowPusher pusher; |
| private FlowSynchronizer sync; |
| private List<Long> idAdded; |
| private List<Long> idRemoved; |
| |
| @Before |
| public void setUp() throws Exception { |
| idAdded = new ArrayList<Long>(); |
| idRemoved = new ArrayList<Long>(); |
| |
| pusher = EasyMock.createMock(FlowPusher.class); |
| EasyMock.expect(pusher.add(EasyMock.anyObject(IOFSwitch.class), EasyMock.anyObject(OFMessage.class))) |
| .andAnswer(new IAnswer<Boolean>() { |
| @Override |
| public Boolean answer() throws Throwable { |
| OFMessage msg = (OFMessage)EasyMock.getCurrentArguments()[1]; |
| if (msg.getType().equals(OFType.FLOW_MOD)) { |
| OFFlowMod fm = (OFFlowMod)msg; |
| if (fm.getCommand() == OFFlowMod.OFPFC_DELETE_STRICT) { |
| idRemoved.add(fm.getCookie()); |
| } |
| } |
| return null; |
| } |
| }).anyTimes(); |
| EasyMock.expect(pusher.add(EasyMock.anyObject(IOFSwitch.class), EasyMock.anyObject(FlowEntry.class))) |
| .andAnswer(new IAnswer<Boolean>() { |
| @Override |
| public Boolean answer() throws Throwable { |
| FlowEntry flow = (FlowEntry)EasyMock.getCurrentArguments()[1]; |
| idAdded.add(flow.flowEntryId().value()); |
| return null; |
| } |
| }).anyTimes(); |
| EasyMock.replay(pusher); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| } |
| |
| /** |
| * Test that synchronization doesn't affect anything in case either DB and |
| * flow table has the same entries. |
| */ |
| @Test |
| public void testStable() { |
| // Create mock of flow table : flow 1 |
| IOFSwitch sw = createMockSwitch(new long[] {1}); |
| |
| // Create mock of flow entries : flow 1 |
| initMockGraph(new long[] {1}); |
| |
| // synchronize |
| doSynchronization(sw,100); |
| |
| // check if flow is not changed |
| assertEquals(0, idAdded.size()); |
| assertEquals(0, idRemoved.size()); |
| } |
| |
| /** |
| * Test that an flow is added in case DB has an extra FlowEntry. |
| */ |
| @Test |
| public void testSingleAdd() { |
| // Create mock of flow table : null |
| IOFSwitch sw = createMockSwitch(new long[] {}); |
| |
| // Create mock of flow entries : flow 1 |
| initMockGraph(new long[] {1}); |
| |
| // synchronize |
| doSynchronization(sw,100); |
| |
| // check if single flow is installed |
| assertEquals(1, idAdded.size()); |
| assertTrue(idAdded.contains((long)1)); |
| assertEquals(0, idRemoved.size()); |
| } |
| |
| /** |
| * Test that an flow is deleted in case switch has an extra FlowEntry. |
| */ |
| @Test |
| public void testSingleDelete() { |
| // Create mock of flow table : flow 1 |
| IOFSwitch sw = createMockSwitch(new long[] {1}); |
| |
| // Create mock of flow entries : null |
| initMockGraph(new long[] {}); |
| |
| // synchronize |
| doSynchronization(sw,100); |
| |
| // check if single flow is deleted |
| assertEquals(0, idAdded.size()); |
| assertEquals(1, idRemoved.size()); |
| assertTrue(idRemoved.contains((long)1)); |
| } |
| |
| /** |
| * Test that appropriate flows are added and other appropriate flows are deleted |
| * in case flows in DB are overlapping flows in switch. |
| */ |
| @Test |
| public void testMixed() { |
| // Create mock of flow table : flow 1,2,3 |
| IOFSwitch sw = createMockSwitch(new long[] {1,2,3}); |
| |
| // Create mock of flow entries : flow 2,3,4,5 |
| initMockGraph(new long[] {2,3,4,5}); |
| |
| // synchronize |
| doSynchronization(sw,100); |
| |
| // check if two flows {4,5} is installed and one flow {1} is deleted |
| assertEquals(2, idAdded.size()); |
| assertTrue(idAdded.contains((long)4)); |
| assertTrue(idAdded.contains((long)5)); |
| assertEquals(1, idRemoved.size()); |
| assertTrue(idRemoved.contains((long)1)); |
| } |
| |
| |
| @Test |
| public void testMassive() { |
| // Create mock of flow table : flow 0-1999 |
| long [] swIdList = new long [2000]; |
| for (long i = 0; i < 2000; ++i) { |
| swIdList[(int)i] = i; |
| } |
| IOFSwitch sw = createMockSwitch(swIdList); |
| |
| // Create mock of flow entries : flow 1500-3499 |
| long [] dbIdList = new long [2000]; |
| for (long i = 0; i < 2000; ++i) { |
| dbIdList[(int)i] = 1500 + i; |
| } |
| initMockGraph(dbIdList); |
| |
| // synchronize |
| doSynchronization(sw, 3000); |
| |
| // check if 1500 flows {2000-3499} is installed and 1500 flows {0,...,1499} is deleted |
| assertEquals(1500, idAdded.size()); |
| for (long i = 2000; i < 3500; ++i) { |
| assertTrue(idAdded.contains(i)); |
| } |
| assertEquals(1500, idRemoved.size()); |
| for (long i = 0; i < 1500; ++i) { |
| assertTrue(idRemoved.contains(i)); |
| } |
| } |
| |
| /** |
| * Create mock IOFSwitch with flow table which has arbitrary flows. |
| * @param cookieList List of FlowEntry IDs switch has. |
| * @return Mock object. |
| */ |
| private IOFSwitch createMockSwitch(long[] cookieList) { |
| IOFSwitch sw = EasyMock.createMock(IOFSwitch.class); |
| EasyMock.expect(sw.getId()).andReturn((long)1).anyTimes(); |
| |
| List<OFStatistics> stats = new ArrayList<OFStatistics>(); |
| for (long cookie : cookieList) { |
| stats.add(createReply(cookie)); |
| } |
| |
| @SuppressWarnings("unchecked") |
| Future<List<OFStatistics>> future = EasyMock.createMock(Future.class); |
| try { |
| EasyMock.expect(future.get()).andReturn(stats).once(); |
| } catch (InterruptedException e1) { |
| fail("Failed in Future#get()"); |
| } catch (ExecutionException e1) { |
| fail("Failed in Future#get()"); |
| } |
| EasyMock.replay(future); |
| |
| try { |
| EasyMock.expect(sw.getStatistics(EasyMock.anyObject(OFStatisticsRequest.class))) |
| .andReturn(future).once(); |
| } catch (IOException e) { |
| fail("Failed in IOFSwitch#getStatistics()"); |
| } |
| |
| EasyMock.replay(sw); |
| return sw; |
| } |
| |
| /** |
| * Create single OFFlowStatisticsReply object which is actually obtained from switch. |
| * @param cookie Cookie value, which indicates ID of FlowEntry installed to switch. |
| * @return Created object. |
| */ |
| private OFFlowStatisticsReply createReply(long cookie) { |
| OFFlowStatisticsReply stat = new OFFlowStatisticsReply(); |
| OFMatch match = new OFMatch(); |
| |
| stat.setCookie(cookie); |
| stat.setMatch(match); |
| stat.setPriority((short)1); |
| |
| return stat; |
| } |
| |
| /** |
| * Create mock GraphDBOperation and FlowDatabaseOperation to mock DB. |
| * @param idList List of FlowEntry IDs stored in DB. |
| */ |
| private void initMockGraph(long[] idList) { |
| List<IFlowEntry> flowEntryList = new ArrayList<IFlowEntry>(); |
| |
| for (long id : idList) { |
| IFlowEntry entry = EasyMock.createMock(IFlowEntry.class); |
| EasyMock.expect(entry.getFlowEntryId()).andReturn(String.valueOf(id)).anyTimes(); |
| EasyMock.replay(entry); |
| flowEntryList.add(entry); |
| } |
| |
| ISwitchObject swObj = EasyMock.createMock(ISwitchObject.class); |
| EasyMock.expect(swObj.getFlowEntries()).andReturn(flowEntryList).once(); |
| EasyMock.replay(swObj); |
| |
| GraphDBOperation mockOp = PowerMock.createMock(GraphDBOperation.class); |
| EasyMock.expect(mockOp.searchSwitch(EasyMock.anyObject(String.class))).andReturn(swObj).once(); |
| |
| PowerMock.mockStatic(FlowDatabaseOperation.class); |
| for (IFlowEntry entry : flowEntryList) { |
| EasyMock.expect(FlowDatabaseOperation.extractFlowEntry(EasyMock.eq(entry))) |
| .andAnswer(new IAnswer<FlowEntry>() { |
| @Override |
| public FlowEntry answer() throws Throwable { |
| IFlowEntry iflow = (IFlowEntry)EasyMock.getCurrentArguments()[0]; |
| long flowEntryId = Long.valueOf(iflow.getFlowEntryId()); |
| |
| FlowEntry flow = EasyMock.createMock(FlowEntry.class); |
| EasyMock.expect(flow.flowEntryId()).andReturn(new FlowEntryId(flowEntryId)).anyTimes(); |
| EasyMock.replay(flow); |
| return flow; |
| } |
| |
| }).anyTimes(); |
| EasyMock.expect(mockOp.searchFlowEntry(EasyMock.eq(new FlowEntryId(entry.getFlowEntryId())))) |
| .andReturn(entry); |
| } |
| PowerMock.replay(FlowDatabaseOperation.class); |
| EasyMock.replay(mockOp); |
| |
| try { |
| PowerMock.expectNew(GraphDBOperation.class, "").andReturn(mockOp); |
| } catch (Exception e) { |
| fail("Failed to create GraphDBOperation"); |
| } |
| PowerMock.replay(GraphDBOperation.class); |
| } |
| |
| /** |
| * Instantiate FlowSynchronizer and sync flows. |
| * @param sw Target IOFSwitch object |
| */ |
| private void doSynchronization(IOFSwitch sw, long wait) { |
| sync = new FlowSynchronizer(); |
| sync.init(pusher); |
| sync.synchronize(sw); |
| |
| try { |
| Thread.sleep(wait); |
| } catch (InterruptedException e) { |
| fail("Failed to sleep"); |
| } |
| } |
| } |