Umesh Krishnaswamy | 345ee99 | 2012-12-13 20:29:48 -0800 | [diff] [blame] | 1 | /** |
| 2 | * Copyright 2011, Big Switch Networks, Inc. |
| 3 | * Originally created by David Erickson, Stanford University |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| 6 | * not use this file except in compliance with the License. You may obtain |
| 7 | * a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 13 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 14 | * License for the specific language governing permissions and limitations |
| 15 | * under the License. |
| 16 | **/ |
| 17 | |
| 18 | package net.floodlightcontroller.core.util; |
| 19 | |
| 20 | import static org.easymock.EasyMock.createNiceMock; |
| 21 | import static org.easymock.EasyMock.expect; |
| 22 | import static org.easymock.EasyMock.replay; |
| 23 | import static org.easymock.EasyMock.verify; |
| 24 | |
| 25 | import java.util.ArrayList; |
| 26 | import java.util.List; |
| 27 | import java.util.Random; |
| 28 | |
| 29 | import org.junit.Test; |
| 30 | import org.openflow.protocol.OFType; |
| 31 | |
| 32 | import net.floodlightcontroller.core.IOFMessageListener; |
| 33 | import net.floodlightcontroller.test.FloodlightTestCase; |
| 34 | |
| 35 | public class MessageDispatcherTest extends FloodlightTestCase { |
| 36 | |
| 37 | IOFMessageListener createLMock(String name) { |
| 38 | IOFMessageListener mock = createNiceMock(IOFMessageListener.class); |
| 39 | expect(mock.getName()).andReturn(name).anyTimes(); |
| 40 | return mock; |
| 41 | } |
| 42 | |
| 43 | void addPrereqs(IOFMessageListener mock, String... deps) { |
| 44 | for (String dep : deps) { |
| 45 | expect(mock.isCallbackOrderingPrereq(OFType.PACKET_IN, dep)).andReturn(true).anyTimes(); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | void testOrdering(ArrayList<IOFMessageListener> inputListeners) { |
| 50 | ListenerDispatcher<OFType, IOFMessageListener> ld = |
| 51 | new ListenerDispatcher<OFType, IOFMessageListener>(); |
| 52 | |
| 53 | for (IOFMessageListener l : inputListeners) { |
| 54 | ld.addListener(OFType.PACKET_IN, l); |
| 55 | } |
| 56 | for (IOFMessageListener l : inputListeners) { |
| 57 | verify(l); |
| 58 | } |
| 59 | |
| 60 | List<IOFMessageListener> result = ld.getOrderedListeners(); |
| 61 | System.out.print("Ordering: "); |
| 62 | for (IOFMessageListener l : result) { |
| 63 | System.out.print(l.getName()); |
| 64 | System.out.print(","); |
| 65 | } |
| 66 | System.out.print("\n"); |
| 67 | |
| 68 | for (int ind_i = 0; ind_i < result.size(); ind_i++) { |
| 69 | IOFMessageListener i = result.get(ind_i); |
| 70 | for (int ind_j = ind_i+1; ind_j < result.size(); ind_j++) { |
| 71 | IOFMessageListener j = result.get(ind_j); |
| 72 | |
| 73 | boolean orderwrong = |
| 74 | (i.isCallbackOrderingPrereq(OFType.PACKET_IN, j.getName()) || |
| 75 | j.isCallbackOrderingPostreq(OFType.PACKET_IN, i.getName())); |
| 76 | assertFalse("Invalid order: " + |
| 77 | ind_i + " (" + i.getName() + ") " + |
| 78 | ind_j + " (" + j.getName() + ") ", orderwrong); |
| 79 | } |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | void randomTestOrdering(ArrayList<IOFMessageListener> mocks) { |
| 84 | Random rand = new Random(0); |
| 85 | ArrayList<IOFMessageListener> random = |
| 86 | new ArrayList<IOFMessageListener>(); |
| 87 | random.addAll(mocks); |
| 88 | for (int i = 0; i < 20; i++) { |
| 89 | for (int j = 0; j < random.size(); j++) { |
| 90 | int ind = rand.nextInt(mocks.size()-1); |
| 91 | IOFMessageListener tmp = random.get(j); |
| 92 | random.set(j, random.get(ind)); |
| 93 | random.set(ind, tmp); |
| 94 | } |
| 95 | testOrdering(random); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | @Test |
| 100 | public void testCallbackOrderingSimple() throws Exception { |
| 101 | ArrayList<IOFMessageListener> mocks = |
| 102 | new ArrayList<IOFMessageListener>(); |
| 103 | for (int i = 0; i < 10; i++) { |
| 104 | mocks.add(createLMock(""+i)); |
| 105 | } |
| 106 | for (int i = 1; i < 10; i++) { |
| 107 | addPrereqs(mocks.get(i), ""+(i-1)); |
| 108 | } |
| 109 | for (IOFMessageListener l : mocks) { |
| 110 | replay(l); |
| 111 | } |
| 112 | randomTestOrdering(mocks); |
| 113 | } |
| 114 | |
| 115 | @Test |
| 116 | public void testCallbackOrderingPartial() throws Exception { |
| 117 | ArrayList<IOFMessageListener> mocks = |
| 118 | new ArrayList<IOFMessageListener>(); |
| 119 | for (int i = 0; i < 10; i++) { |
| 120 | mocks.add(createLMock(""+i)); |
| 121 | } |
| 122 | for (int i = 1; i < 5; i++) { |
| 123 | addPrereqs(mocks.get(i), ""+(i-1)); |
| 124 | } |
| 125 | for (int i = 6; i < 10; i++) { |
| 126 | addPrereqs(mocks.get(i), ""+(i-1)); |
| 127 | } |
| 128 | for (IOFMessageListener l : mocks) { |
| 129 | replay(l); |
| 130 | } |
| 131 | randomTestOrdering(mocks); |
| 132 | } |
| 133 | |
| 134 | |
| 135 | @Test |
| 136 | public void testCallbackOrderingPartial2() throws Exception { |
| 137 | ArrayList<IOFMessageListener> mocks = |
| 138 | new ArrayList<IOFMessageListener>(); |
| 139 | for (int i = 0; i < 10; i++) { |
| 140 | mocks.add(createLMock(""+i)); |
| 141 | } |
| 142 | for (int i = 2; i < 5; i++) { |
| 143 | addPrereqs(mocks.get(i), ""+(i-1)); |
| 144 | } |
| 145 | for (int i = 6; i < 9; i++) { |
| 146 | addPrereqs(mocks.get(i), ""+(i-1)); |
| 147 | } |
| 148 | for (IOFMessageListener l : mocks) { |
| 149 | replay(l); |
| 150 | } |
| 151 | randomTestOrdering(mocks); |
| 152 | } |
| 153 | } |