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   1 /*
   2  * Copyright (C) 2016, 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.context;
  20
  21 import static org.junit.Assert.assertFalse;
  22 import static org.junit.Assert.assertNotNull;
  23 import static org.junit.Assert.assertTrue;
  24 import static org.junit.Assert.fail;
  25
  26 import java.io.IOException;
  27 import java.util.List;
  28
  29 import org.junit.After;
  30 import org.junit.Before;
  31 import org.junit.Test;
  32 import org.junit.runner.RunWith;
  33 import org.lttng.tools.ILttngSession;
  34 import org.lttng.tools.ILttngSession.Domain;
  35 import org.lttng.ust.agent.ILttngHandler;
  36 import org.lttng.ust.agent.context.ContextInfoManager;
  37 import org.lttng.ust.agent.utils.TestPrintRunner;
  38
  39 /**
  40  * Base abstract class to implement all sorts of integration tests verifying the
  41  * presence of enabled application contexts in resulting traces.
  42  */
  43 @RunWith(TestPrintRunner.class)
  44 public abstract class AppContextITBase {
  45
  46     protected static final String EVENT_NAME = "EventName";
  47
  48     protected static final String RETRIEVER_NAME_1 = "Retriever1";
  49     protected static final String RETRIEVER_NAME_2 = "Retriever2";
  50
  51     private static final String CONTEXT_NAME = ContextInfoRetrieverStubs.CONTEXT_NAME;
  52
  53     private ContextInfoManager cim;
  54     private ILttngSession session;
  55
  56     /* Field defined by the sub-class */
  57     protected ILttngHandler logHandler;
  58
  59     protected abstract Domain getDomain();
  60
  61     protected abstract void sendEventsToLoggers();
  62
  63     /**
  64      * Base test setup
  65      */
  66     @Before
  67     public void testSetup() {
  68         try {
  69             cim = ContextInfoManager.getInstance();
  70         } catch (SecurityException | IOException e) {
  71             /* The native library is not available! */
  72             fail();
  73         }
  74         session = ILttngSession.createSession(null, getDomain());
  75     }
  76
  77     /**
  78      * Base test teardown
  79      */
  80     @After
  81     public void testTeardown() {
  82         session.close();
  83
  84         logHandler.close();
  85         logHandler = null;
  86
  87         /* In case some tests fail or forget to unregister their retrievers */
  88         cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1);
  89         cim.unregisterContextInfoRetriever(RETRIEVER_NAME_2);
  90     }
  91
  92     // ------------------------------------------------------------------------
  93     // Context enabled/disabled tests
  94     // ------------------------------------------------------------------------
  95
  96     /**
  97      * Utility method to check that a context is present in all events of a
  98      * trace output.
  99      */
 100     private static void testContextPresentInTrace(List<String> traceOutput, String retrieverName, String contextName, String contextValue) {
 101         String fullString = "_app_" + retrieverName + "_" + contextName + " = " + contextValue;
 102         traceOutput.forEach(line -> assertTrue(line.contains(fullString)));
 103     }
 104
 105     /**
 106      * Utility method to check that a context is *absent* from all events of a
 107      * trace output
 108      */
 109     private static void testContextNotPresentInTrace(List<String> traceOutput, String retrieverName, String contextName) {
 110         String fullString = "_app_" + retrieverName + "_" + contextName;
 111         traceOutput.forEach(line -> assertFalse(line.contains(fullString)));
 112     }
 113
 114     /**
 115      * Test that if no retrievers are declared, no context info is passed at
 116      * all.
 117      */
 118     @Test
 119     public void testNoContexts() {
 120         assertTrue(session.enableAllEvents());
 121         assertTrue(session.start());
 122         sendEventsToLoggers();
 123         assertTrue(session.stop());
 124
 125         List<String> output = session.view();
 126         assertNotNull(output);
 127         assertFalse(output.isEmpty());
 128
 129         /* Test that there is no "_app" contexts in the output */
 130         output.forEach(line -> assertFalse(line.contains("_app")));
 131     }
 132
 133     /**
 134      * Test that if a retriever is registered and provides a context, but this
 135      * context is not enabled in the tracing session, that it is not present in
 136      * the trace.
 137      */
 138     @Test
 139     public void testContextAvailableButNotEnabled() {
 140         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 141
 142         assertTrue(session.enableAllEvents());
 143         assertTrue(session.start());
 144         sendEventsToLoggers();
 145         assertTrue(session.stop());
 146
 147         List<String> output = session.view();
 148         assertNotNull(output);
 149         assertFalse(output.isEmpty());
 150
 151         /* Test that there is no "_app" contexts in the output */
 152         output.forEach(line -> assertFalse(line.contains("_app")));
 153
 154         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 155     }
 156
 157     /**
 158      * Test that if a context is enabled, but no retriever provides it, that the
 159      * retriever/context names are still mentioned in the event but no value is
 160      * provided.
 161      */
 162     @Test
 163     public void testContextNotAvailableButEnabled() {
 164         assertTrue(session.enableAllEvents());
 165         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 166
 167         assertTrue(session.start());
 168         sendEventsToLoggers();
 169         assertTrue(session.stop());
 170
 171         List<String> output = session.view();
 172         assertNotNull(output);
 173         assertFalse(output.isEmpty());
 174
 175         /* Test that context name is there but value is not */
 176         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME, "{ none = { } } }");
 177     }
 178
 179     /**
 180      * Test that if a context is enabled and provided by a retriever that it is
 181      * correctly present in the tracing session.
 182      */
 183     @Test
 184     public void testContextAvailableAndEnabled() {
 185         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 186
 187         assertTrue(session.enableAllEvents());
 188         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 189
 190         assertTrue(session.start());
 191         sendEventsToLoggers();
 192         assertTrue(session.stop());
 193
 194         List<String> output = session.view();
 195         assertNotNull(output);
 196         assertFalse(output.isEmpty());
 197
 198         /* Test that context name + value are present */
 199         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 200                 "{ string = \"" + ContextInfoRetrieverStubs.STRING_VALUE + "\" }");
 201
 202         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 203     }
 204
 205     /**
 206      * Test that one context is available by a retriever, but another is is
 207      * enabled in the session. Only the latter should be mentioned in events,
 208      * with no value.
 209      */
 210     @Test
 211     public void testContextsOneAvailableOtherEnabled() {
 212         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 213
 214         assertTrue(session.enableAllEvents());
 215         assertTrue(session.enableAppContext(RETRIEVER_NAME_2, CONTEXT_NAME));
 216
 217         assertTrue(session.start());
 218         sendEventsToLoggers();
 219         assertTrue(session.stop());
 220
 221         List<String> output = session.view();
 222         assertNotNull(output);
 223         assertFalse(output.isEmpty());
 224
 225         /* Test that only retriever-name-2 is present, with no value */
 226         testContextNotPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME);
 227         testContextPresentInTrace(output, RETRIEVER_NAME_2, CONTEXT_NAME, "{ none = { } } }");
 228
 229         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 230     }
 231
 232     /**
 233      * Test with two contexts provided in the application, but only one of them
 234      * is enabled in the session. Only that one should be present in the trace,
 235      * name and value.
 236      */
 237     @Test
 238     public void testContextsTwoAvailableOneEnabled() {
 239         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 240         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_2, ContextInfoRetrieverStubs.INTEGER_RETRIEVER));
 241
 242         assertTrue(session.enableAllEvents());
 243         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 244
 245         assertTrue(session.start());
 246         sendEventsToLoggers();
 247         assertTrue(session.stop());
 248
 249         List<String> output = session.view();
 250         assertNotNull(output);
 251         assertFalse(output.isEmpty());
 252
 253         /* Test that only retriever-name-1 is present, name + value */
 254         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 255                 "{ string = \"" + ContextInfoRetrieverStubs.STRING_VALUE + "\" }");
 256         testContextNotPresentInTrace(output, RETRIEVER_NAME_2, CONTEXT_NAME);
 257
 258         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 259         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_2));
 260     }
 261
 262     /**
 263      * Test with two contexts enabled in the session but only one of them is
 264      * provided by the application. Both should be mentioned in the trace, but
 265      * only the provided one will have a value.
 266      */
 267     @Test
 268     public void testContextsOneAvailableTwoEnabled() {
 269         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 270
 271         assertTrue(session.enableAllEvents());
 272         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 273         assertTrue(session.enableAppContext(RETRIEVER_NAME_2, CONTEXT_NAME));
 274
 275         assertTrue(session.start());
 276         sendEventsToLoggers();
 277         assertTrue(session.stop());
 278
 279         List<String> output = session.view();
 280         assertNotNull(output);
 281         assertFalse(output.isEmpty());
 282
 283         /* Test that both contexts are present, but only retriever-1's has a value */
 284         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 285                 "{ string = \"" + ContextInfoRetrieverStubs.STRING_VALUE + "\" }");
 286         testContextPresentInTrace(output, RETRIEVER_NAME_2, CONTEXT_NAME, "{ none = { } } }");
 287
 288         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 289     }
 290
 291     // ------------------------------------------------------------------------
 292     // Context types tests
 293     // ------------------------------------------------------------------------
 294
 295     /**
 296      * Utility method to enable all events, add the one context we are looking
 297      * for, take a trace, and return the trace output.
 298      */
 299     private List<String> enableContextAndTrace() {
 300         assertTrue(session.enableAllEvents());
 301         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 302         assertTrue(session.start());
 303         sendEventsToLoggers();
 304         assertTrue(session.stop());
 305
 306         List<String> output = session.view();
 307         assertNotNull(output);
 308         assertFalse(output.isEmpty());
 309
 310         return output;
 311     }
 312
 313     /**
 314      * Test a "null" context value.
 315      */
 316     @Test
 317     public void testContextValueNull() {
 318         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.NULL_RETRIEVER));
 319
 320         List<String> output = enableContextAndTrace();
 321         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME, "{ none = { } } }");
 322
 323         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 324     }
 325
 326     /**
 327      * Test an integer (int32) context value.
 328      */
 329     @Test
 330     public void testContextValueInteger() {
 331         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.INTEGER_RETRIEVER));
 332
 333         List<String> output = enableContextAndTrace();
 334         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 335                 "{ int32 = " + ContextInfoRetrieverStubs.INTEGER_VALUE + " } }");
 336
 337         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 338     }
 339
 340     /**
 341      * Test a long (int64) context value.
 342      */
 343     @Test
 344     public void testContextValueLong() {
 345         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.LONG_RETRIEVER));
 346
 347         List<String> output = enableContextAndTrace();
 348         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 349                 "{ int64 = " + ContextInfoRetrieverStubs.LONG_VALUE + " } }");
 350
 351         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 352     }
 353
 354     /**
 355      * Test a double context value.
 356      */
 357     @Test
 358     public void testContextValueDouble() {
 359         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.DOUBLE_RETRIEVER));
 360
 361         List<String> output = enableContextAndTrace();
 362         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 363                 "{ double = " + ContextInfoRetrieverStubs.DOUBLE_VALUE + " } }");
 364
 365         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 366     }
 367
 368     /**
 369      * Test a character context value (should get converted to a string).
 370      */
 371     @Test
 372     public void testContextValueCharacter() {
 373         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.CHARACTER_RETRIEVER));
 374
 375         List<String> output = enableContextAndTrace();
 376         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 377                 "{ string = \"" + ContextInfoRetrieverStubs.CHARACTER_VALUE + "\" } }");
 378
 379         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 380     }
 381
 382     /**
 383      * Test a float context value.
 384      */
 385     @Test
 386     public void testContextValueFloat() {
 387         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.FLOAT_RETRIEVER));
 388
 389         List<String> output = enableContextAndTrace();
 390         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 391                 "{ float = " + ContextInfoRetrieverStubs.FLOAT_VALUE + " } }");
 392
 393         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 394     }
 395
 396     /**
 397      * Test a byte (int8) context value.
 398      */
 399     @Test
 400     public void testContextValueByte() {
 401         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.BYTE_RETRIEVER));
 402
 403         List<String> output = enableContextAndTrace();
 404         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 405                 "{ int8 = " + ContextInfoRetrieverStubs.BYTE_VALUE + " } }");
 406
 407         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 408     }
 409
 410     /**
 411      * Test a short (int16) context value.
 412      */
 413     @Test
 414     public void testContextValueShort() {
 415         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.SHORT_RETRIEVER));
 416
 417         List<String> output = enableContextAndTrace();
 418         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 419                 "{ int16 = " + ContextInfoRetrieverStubs.SHORT_VALUE + " } }");
 420
 421         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 422     }
 423
 424     /**
 425      * Test a "true" boolean context value (gets converted to a int8 of value 1).
 426      */
 427     @Test
 428     public void testContextValueBooleanTrue() {
 429         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.BOOLEAN_TRUE_RETRIEVER));
 430
 431         List<String> output = enableContextAndTrace();
 432         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME, "{ int8 = 1 } }");
 433
 434         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 435     }
 436
 437     /**
 438      * Test a "false" boolean context value (gets converted to a int8 of value 0).
 439      */
 440     @Test
 441     public void testContextValueBooleanFalse() {
 442         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.BOOLEAN_FALSE_RETRIEVER));
 443
 444         List<String> output = enableContextAndTrace();
 445         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME, "{ int8 = 0 } }");
 446
 447         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 448     }
 449
 450     /**
 451      * Test a string context value.
 452      */
 453     @Test
 454     public void testContextValueString() {
 455         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 456
 457         List<String> output = enableContextAndTrace();
 458         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 459                 "{ string = \"" + ContextInfoRetrieverStubs.STRING_VALUE + "\" } }");
 460
 461         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 462     }
 463
 464     /**
 465      * Test a Object context value (should be converted to a String via .toString()).
 466      */
 467     @Test
 468     public void testContextValueObject() {
 469         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.OBJECT_RETRIEVER));
 470
 471         List<String> output = enableContextAndTrace();
 472         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 473                 "{ string = \"" + ContextInfoRetrieverStubs.OBJECT_VALUE.toString() + "\" } }");
 474
 475         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 476     }
 477
 478     // ------------------------------------------------------------------------
 479     // Tests related to filtering
 480     // ------------------------------------------------------------------------
 481
 482     /**
 483      * Test with a filter expression using a context, but not having the actual
 484      * context enabled.
 485      *
 486      * The JNI should still send the context so UST can use it for filtering,
 487      * but it should not be present in the resulting trace.
 488      */
 489     @Test
 490     public void testContextFilterExpressionNotEnabled() {
 491         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 492
 493         assertTrue(session.enableEvent(EVENT_NAME, null, false,
 494                 "$app." + RETRIEVER_NAME_1 + '.' + CONTEXT_NAME + "==\"" + ContextInfoRetrieverStubs.STRING_VALUE + '\"'));
 495
 496         assertTrue(session.start());
 497         sendEventsToLoggers();
 498         assertTrue(session.stop());
 499
 500         List<String> output = session.view();
 501         assertNotNull(output);
 502         assertFalse(output.isEmpty());
 503
 504         testContextNotPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME);
 505
 506         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 507     }
 508
 509     /**
 510      * Test with a filter expression and an enabled context. The filter however
 511      * should *exclude* the events, so no events should be present in the
 512      * resulting trace.
 513      */
 514     @Test
 515     public void testContextFilterExpressionEnabledNotMatching() {
 516         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 517
 518         assertTrue(session.enableEvent(EVENT_NAME, null, false,
 519                 "$app." + RETRIEVER_NAME_1 + '.' + CONTEXT_NAME + "!=\"" + ContextInfoRetrieverStubs.STRING_VALUE + '\"'));
 520
 521         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 522         assertTrue(session.start());
 523         sendEventsToLoggers();
 524         assertTrue(session.stop());
 525
 526         List<String> output = session.view();
 527         assertNotNull(output);
 528         assertTrue(output.isEmpty());
 529
 530         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 531     }
 532
 533     /**
 534      * Test with a filter expression and an enabled context. The filter however
 535      * should match the events, so events with the context info should be
 536      * present in the resulting trace.
 537      */
 538     @Test
 539     public void testContextFilterExpressionEnabledMatching() {
 540         assertTrue(cim.registerContextInfoRetriever(RETRIEVER_NAME_1, ContextInfoRetrieverStubs.STRING_RETRIEVER));
 541
 542         assertTrue(session.enableEvent(EVENT_NAME, null, false,
 543                 "$app." + RETRIEVER_NAME_1 + '.' + CONTEXT_NAME + "==\"" + ContextInfoRetrieverStubs.STRING_VALUE + '\"'));
 544
 545         assertTrue(session.enableAppContext(RETRIEVER_NAME_1, CONTEXT_NAME));
 546         assertTrue(session.start());
 547         sendEventsToLoggers();
 548         assertTrue(session.stop());
 549
 550         List<String> output = session.view();
 551         assertNotNull(output);
 552         assertFalse(output.isEmpty());
 553
 554         testContextPresentInTrace(output, RETRIEVER_NAME_1, CONTEXT_NAME,
 555                 "{ string = \"" + ContextInfoRetrieverStubs.STRING_VALUE + "\" } }");
 556
 557         assertTrue(cim.unregisterContextInfoRetriever(RETRIEVER_NAME_1));
 558     }
 559 }