Github user grkvlt commented on a diff in the pull request: https://github.com/apache/brooklyn-server/pull/473#discussion_r90474128 --- Diff: test-framework/src/test/java/org/apache/brooklyn/test/framework/TestSensorTest.java --- @@ -332,6 +343,56 @@ public void testFailFastIfNoSensor() throws Exception { assertStartFails(app, NullPointerException.class, Asserts.DEFAULT_LONG_TIMEOUT); } + @Test + public void testDoesNotLogStacktraceRepeatedly() throws Exception { + final long time = System.currentTimeMillis(); + final String sensorValue = String.format("%s%s%s", Identifiers.makeRandomId(8), time, Identifiers.makeRandomId(8)); + + // Test case will repeatedly fail until we have finished our logging assertions. + // Then we'll let it complete by setting the sensor. + TestSensor testCase = app.createAndManageChild(EntitySpec.create(TestSensor.class) + .configure(TestSensor.TIMEOUT, Asserts.DEFAULT_LONG_TIMEOUT) + .configure(TestSensor.TARGET_ENTITY, app) + .configure(TestSensor.SENSOR_NAME, STRING_SENSOR.getName()) + .configure(TestSensor.ASSERTIONS, newListAssertion("matches", String.format(".*%s.*", time)))); + + String loggerName = Repeater.class.getName(); + ch.qos.logback.classic.Level logLevel = ch.qos.logback.classic.Level.DEBUG; + Predicate<ILoggingEvent> repeatedFailureMsgMatcher = EventPredicates.containsMessage("repeated failure; excluding stacktrace"); + Predicate<ILoggingEvent> stacktraceMatcher = EventPredicates.containsExceptionStackLine(TestFrameworkAssertions.class, "checkActualAgainstAssertions"); + Predicate<ILoggingEvent> filter = Predicates.or(repeatedFailureMsgMatcher, stacktraceMatcher); + LogWatcher watcher = new LogWatcher(loggerName, logLevel, filter); + + Task<Void> task; + watcher.start(); + try { --- End diff -- Since `LogWartcher` is `Closeable` can do this in the `try` block and it will be closed automatically. ```Java try (LogWatcher watcher = new LogWatcher(loggerName, logLevel, filter)) { // stuff } ```
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