| 1 | /* |
| 2 | * Copyright (C) 2015, EfficiOS Inc., Alexandre Montplaisir <alexmonthy@efficios.com> |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along |
| 15 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 17 | */ |
| 18 | |
| 19 | package org.lttng.ust.agent.integration.filter; |
| 20 | |
| 21 | import static org.junit.Assert.assertEquals; |
| 22 | |
| 23 | import java.io.IOException; |
| 24 | import java.util.Collections; |
| 25 | import java.util.HashSet; |
| 26 | import java.util.Set; |
| 27 | import java.util.stream.Collectors; |
| 28 | import java.util.stream.Stream; |
| 29 | |
| 30 | import org.junit.After; |
| 31 | import org.junit.Before; |
| 32 | import org.junit.Test; |
| 33 | import org.junit.runner.RunWith; |
| 34 | import org.lttng.tools.ILttngSession; |
| 35 | import org.lttng.ust.agent.ILttngHandler; |
| 36 | import org.lttng.ust.agent.filter.FilterChangeNotifier; |
| 37 | import org.lttng.ust.agent.filter.IFilterChangeListener; |
| 38 | import org.lttng.ust.agent.session.EventRule; |
| 39 | import org.lttng.ust.agent.session.LogLevelSelector; |
| 40 | import org.lttng.ust.agent.session.LogLevelSelector.LogLevelType; |
| 41 | import org.lttng.ust.agent.utils.EventRuleFactory; |
| 42 | import org.lttng.ust.agent.utils.ILogLevelStrings; |
| 43 | import org.lttng.ust.agent.utils.TestPrintRunner; |
| 44 | |
| 45 | /** |
| 46 | * Base test class for {@link IFilterChangeListener} tests. |
| 47 | * |
| 48 | * @author Alexandre Montplaisir |
| 49 | */ |
| 50 | @RunWith(TestPrintRunner.class) |
| 51 | public abstract class FilterListenerITBase { |
| 52 | |
| 53 | private static final String EVENT_NAME_A = "eventA"; |
| 54 | private static final String EVENT_NAME_B = "eventB"; |
| 55 | private static final String EVENT_NAME_C = "eventC"; |
| 56 | |
| 57 | private ILttngSession session; |
| 58 | private TestFilterListener listener; |
| 59 | private ILttngHandler handler; |
| 60 | |
| 61 | protected abstract ILttngSession.Domain getSessionDomain(); |
| 62 | protected abstract ILttngHandler getLogHandler() throws SecurityException, IOException; |
| 63 | protected abstract ILogLevelStrings getLogLevelStrings(); |
| 64 | |
| 65 | /** |
| 66 | * Test setup |
| 67 | * |
| 68 | * @throws SecurityException |
| 69 | * @throws IOException |
| 70 | */ |
| 71 | @Before |
| 72 | public void setup() throws SecurityException, IOException { |
| 73 | handler = getLogHandler(); |
| 74 | listener = new TestFilterListener(); |
| 75 | FilterChangeNotifier.getInstance().registerListener(listener); |
| 76 | session = ILttngSession.createSession(null, getSessionDomain()); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Test teardown |
| 81 | */ |
| 82 | @After |
| 83 | public void teardown() { |
| 84 | session.close(); |
| 85 | FilterChangeNotifier.getInstance().unregisterListener(listener); |
| 86 | handler.close(); |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Test not sending any commands. |
| 91 | */ |
| 92 | @Test |
| 93 | public void testNoRules() { |
| 94 | assertEquals(0, listener.getNbNotifications()); |
| 95 | assertEquals(Collections.EMPTY_SET, listener.getCurrentRules()); |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Test sending one event rule. |
| 100 | */ |
| 101 | @Test |
| 102 | public void testOneRule() { |
| 103 | Set<EventRule> rules = Collections.singleton( |
| 104 | EventRuleFactory.createRule(EVENT_NAME_A)); |
| 105 | |
| 106 | session.enableEvent(EVENT_NAME_A, null, false, null); |
| 107 | |
| 108 | assertEquals(1, listener.getNbNotifications()); |
| 109 | assertEquals(rules, listener.getCurrentRules()); |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Test sending many event rules. |
| 114 | */ |
| 115 | @Test |
| 116 | public void testManyRules() { |
| 117 | Set<EventRule> rules = Stream.of( |
| 118 | EventRuleFactory.createRule(EVENT_NAME_A), |
| 119 | EventRuleFactory.createRule(EVENT_NAME_B), |
| 120 | EventRuleFactory.createRule(EVENT_NAME_C)) |
| 121 | .collect(Collectors.toSet()); |
| 122 | |
| 123 | session.enableEvent(EVENT_NAME_A, null, false, null); |
| 124 | session.enableEvent(EVENT_NAME_B, null, false, null); |
| 125 | session.enableEvent(EVENT_NAME_C, null, false, null); |
| 126 | |
| 127 | assertEquals(3, listener.getNbNotifications()); |
| 128 | assertEquals(rules, listener.getCurrentRules()); |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Test enabling then disabling some events. |
| 133 | */ |
| 134 | @Test |
| 135 | public void testManyRulesDisableSome() { |
| 136 | Set<EventRule> rules = Collections.singleton( |
| 137 | EventRuleFactory.createRule(EVENT_NAME_A)); |
| 138 | |
| 139 | session.enableEvent(EVENT_NAME_A, null, false, null); |
| 140 | session.enableEvent(EVENT_NAME_B, null, false, null); |
| 141 | session.enableEvent(EVENT_NAME_C, null, false, null); |
| 142 | session.disableEvents(EVENT_NAME_B); |
| 143 | session.disableEvents(EVENT_NAME_C); |
| 144 | |
| 145 | assertEquals(5, listener.getNbNotifications()); |
| 146 | assertEquals(rules, listener.getCurrentRules()); |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Test enabling some rules, then calling disable-event -a. |
| 151 | */ |
| 152 | @Test |
| 153 | public void testManyRulesDisableAll() { |
| 154 | Set<EventRule> rules = Collections.EMPTY_SET; |
| 155 | |
| 156 | session.enableEvent(EVENT_NAME_A, null, false, null); |
| 157 | session.enableEvent(EVENT_NAME_B, null, false, null); |
| 158 | session.enableEvent(EVENT_NAME_C, null, false, null); |
| 159 | session.disableAllEvents(); |
| 160 | |
| 161 | /* |
| 162 | * We should receive 6 notifications, because a "disable-event -a" sends |
| 163 | * one for each event that was enabled. |
| 164 | */ |
| 165 | assertEquals(6, listener.getNbNotifications()); |
| 166 | assertEquals(rules, listener.getCurrentRules()); |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * Test enabling the same event name with various values of loglevels. |
| 171 | */ |
| 172 | @Test |
| 173 | public void testSameEventsDiffLogLevels() { |
| 174 | LogLevelSelector lls1 = new LogLevelSelector(getLogLevelStrings().warningInt(), LogLevelType.LTTNG_EVENT_LOGLEVEL_RANGE); |
| 175 | LogLevelSelector lls2 = new LogLevelSelector(getLogLevelStrings().warningInt(), LogLevelType.LTTNG_EVENT_LOGLEVEL_SINGLE); |
| 176 | LogLevelSelector lls3 = new LogLevelSelector(getLogLevelStrings().infoInt(), LogLevelType.LTTNG_EVENT_LOGLEVEL_RANGE); |
| 177 | |
| 178 | Set<EventRule> rules = Stream.of( |
| 179 | EventRuleFactory.createRule(EVENT_NAME_A, lls1), |
| 180 | EventRuleFactory.createRule(EVENT_NAME_A, lls2), |
| 181 | EventRuleFactory.createRule(EVENT_NAME_A, lls3)) |
| 182 | .collect(Collectors.toSet()); |
| 183 | |
| 184 | session.enableEvent(EVENT_NAME_A, getLogLevelStrings().warningName(), false, null); |
| 185 | session.enableEvent(EVENT_NAME_A, getLogLevelStrings().warningName(), true, null); |
| 186 | session.enableEvent(EVENT_NAME_A, getLogLevelStrings().infoName(), false, null); |
| 187 | |
| 188 | assertEquals(3, listener.getNbNotifications()); |
| 189 | assertEquals(rules, listener.getCurrentRules()); |
| 190 | } |
| 191 | |
| 192 | /** |
| 193 | * Test enabling the same event name with various filters. |
| 194 | */ |
| 195 | @Test |
| 196 | public void testSameEventsDiffFilters() { |
| 197 | String filterA = "filterA"; |
| 198 | String filterB = "filterB"; |
| 199 | |
| 200 | Set<EventRule> rules = Stream.of( |
| 201 | EventRuleFactory.createRule(EVENT_NAME_A), |
| 202 | EventRuleFactory.createRule(EVENT_NAME_B, EventRuleFactory.LOG_LEVEL_UNSPECIFIED, filterA), |
| 203 | EventRuleFactory.createRule(EVENT_NAME_C, EventRuleFactory.LOG_LEVEL_UNSPECIFIED, filterB)) |
| 204 | .collect(Collectors.toSet()); |
| 205 | |
| 206 | session.enableEvent(EVENT_NAME_A, null, false, null); |
| 207 | session.enableEvent(EVENT_NAME_B, null, false, filterA); |
| 208 | session.enableEvent(EVENT_NAME_C, null, false, filterB); |
| 209 | |
| 210 | assertEquals(3, listener.getNbNotifications()); |
| 211 | assertEquals(rules, listener.getCurrentRules()); |
| 212 | } |
| 213 | |
| 214 | /** |
| 215 | * Test sending some notifications then detaching a listener. Subsequent |
| 216 | * notifications should not be sent. |
| 217 | */ |
| 218 | @Test |
| 219 | public void testDetachingListener() { |
| 220 | Set<EventRule> rules = Stream.of( |
| 221 | EventRuleFactory.createRule(EVENT_NAME_A), |
| 222 | EventRuleFactory.createRule(EVENT_NAME_B)) |
| 223 | .collect(Collectors.toSet()); |
| 224 | |
| 225 | session.enableEvent(EVENT_NAME_A, null, false, null); |
| 226 | session.enableEvent(EVENT_NAME_B, null, false, null); |
| 227 | FilterChangeNotifier.getInstance().unregisterListener(listener); |
| 228 | session.enableEvent(EVENT_NAME_C, null, false, null); |
| 229 | |
| 230 | assertEquals(2, listener.getNbNotifications()); |
| 231 | assertEquals(rules, listener.getCurrentRules()); |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * Run a test with multiple listeners attached to the manager. All listeners |
| 236 | * should receive all the data. |
| 237 | */ |
| 238 | @Test |
| 239 | public void testMultipleListeners() { |
| 240 | FilterChangeNotifier fcn = FilterChangeNotifier.getInstance(); |
| 241 | TestFilterListener listener2 = new TestFilterListener(); |
| 242 | TestFilterListener listener3 = new TestFilterListener(); |
| 243 | fcn.registerListener(listener2); |
| 244 | fcn.registerListener(listener3); |
| 245 | |
| 246 | Set<EventRule> rules = Stream.of( |
| 247 | EventRuleFactory.createRule(EVENT_NAME_A), |
| 248 | EventRuleFactory.createRule(EVENT_NAME_B)) |
| 249 | .collect(Collectors.toSet()); |
| 250 | |
| 251 | session.enableEvent(EVENT_NAME_A, null, false, null); |
| 252 | session.enableEvent(EVENT_NAME_B, null, false, null); |
| 253 | session.enableEvent(EVENT_NAME_C, null, false, null); |
| 254 | session.disableEvents(EVENT_NAME_C); |
| 255 | |
| 256 | assertEquals(4, listener.getNbNotifications()); |
| 257 | assertEquals(rules, listener.getCurrentRules()); |
| 258 | |
| 259 | assertEquals(4, listener2.getNbNotifications()); |
| 260 | assertEquals(rules, listener2.getCurrentRules()); |
| 261 | |
| 262 | assertEquals(4, listener3.getNbNotifications()); |
| 263 | assertEquals(rules, listener3.getCurrentRules()); |
| 264 | |
| 265 | fcn.unregisterListener(listener2); |
| 266 | fcn.unregisterListener(listener3); |
| 267 | } |
| 268 | |
| 269 | /** |
| 270 | * Test with both attached and unattached listeners. The unattached ones |
| 271 | * should not receive anything, but should not interfere with the other |
| 272 | * ones. |
| 273 | */ |
| 274 | @Test |
| 275 | public void testUnattachedListeners() { |
| 276 | FilterChangeNotifier fcn = FilterChangeNotifier.getInstance(); |
| 277 | TestFilterListener listener2 = new TestFilterListener(); |
| 278 | TestFilterListener listener3 = new TestFilterListener(); |
| 279 | /* We attach then detach listener2. We never attach listener3 */ |
| 280 | fcn.registerListener(listener2); |
| 281 | fcn.unregisterListener(listener2); |
| 282 | |
| 283 | Set<EventRule> rules = Stream.of( |
| 284 | EventRuleFactory.createRule(EVENT_NAME_A), |
| 285 | EventRuleFactory.createRule(EVENT_NAME_B)) |
| 286 | .collect(Collectors.toSet()); |
| 287 | |
| 288 | session.enableEvent(EVENT_NAME_A, null, false, null); |
| 289 | session.enableEvent(EVENT_NAME_B, null, false, null); |
| 290 | |
| 291 | assertEquals(2, listener.getNbNotifications()); |
| 292 | assertEquals(rules, listener.getCurrentRules()); |
| 293 | |
| 294 | assertEquals(0, listener2.getNbNotifications()); |
| 295 | assertEquals(Collections.EMPTY_SET, listener2.getCurrentRules()); |
| 296 | |
| 297 | assertEquals(0, listener3.getNbNotifications()); |
| 298 | assertEquals(Collections.EMPTY_SET, listener3.getCurrentRules()); |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * Test that a newly-registered listener correctly receives the "statedump", |
| 303 | * which means all the rules currently active, upon registration. |
| 304 | */ |
| 305 | @Test |
| 306 | public void testStatedump() { |
| 307 | FilterChangeNotifier fcn = FilterChangeNotifier.getInstance(); |
| 308 | TestFilterListener listener2 = new TestFilterListener(); |
| 309 | |
| 310 | Set<EventRule> rules1 = Stream.of( |
| 311 | EventRuleFactory.createRule(EVENT_NAME_A), |
| 312 | EventRuleFactory.createRule(EVENT_NAME_B)) |
| 313 | .collect(Collectors.toSet()); |
| 314 | Set<EventRule> rules2 = Stream.of( |
| 315 | EventRuleFactory.createRule(EVENT_NAME_A), |
| 316 | EventRuleFactory.createRule(EVENT_NAME_C)) |
| 317 | .collect(Collectors.toSet()); |
| 318 | |
| 319 | session.enableEvent(EVENT_NAME_A, null, false, null); |
| 320 | session.enableEvent(EVENT_NAME_B, null, false, null); |
| 321 | fcn.registerListener(listener2); |
| 322 | |
| 323 | /* We should have received the "statedump" when registering */ |
| 324 | assertEquals(2, listener2.getNbNotifications()); |
| 325 | assertEquals(rules1, listener2.getCurrentRules()); |
| 326 | |
| 327 | session.enableEvent(EVENT_NAME_C, null, false, null); |
| 328 | session.disableEvents(EVENT_NAME_B); |
| 329 | |
| 330 | /* Subsequent changes should also be received */ |
| 331 | assertEquals(4, listener2.getNbNotifications()); |
| 332 | assertEquals(rules2, listener2.getCurrentRules()); |
| 333 | |
| 334 | fcn.unregisterListener(listener2); |
| 335 | } |
| 336 | |
| 337 | /** |
| 338 | * The filter listener used for tests. |
| 339 | */ |
| 340 | private static class TestFilterListener implements IFilterChangeListener { |
| 341 | |
| 342 | private final Set<EventRule> currentRules = new HashSet<>(); |
| 343 | private volatile int currentNotifications = 0; |
| 344 | |
| 345 | public TestFilterListener() {} |
| 346 | |
| 347 | @Override |
| 348 | public void eventRuleAdded(EventRule rule) { |
| 349 | currentRules.add(rule); |
| 350 | currentNotifications++; |
| 351 | } |
| 352 | |
| 353 | @Override |
| 354 | public void eventRuleRemoved(EventRule rule) { |
| 355 | currentRules.remove(rule); |
| 356 | currentNotifications++; |
| 357 | } |
| 358 | |
| 359 | public int getNbNotifications() { |
| 360 | return currentNotifications; |
| 361 | } |
| 362 | |
| 363 | public Set<EventRule> getCurrentRules() { |
| 364 | return currentRules; |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | } |