diff options
3 files changed, 79 insertions, 29 deletions
diff --git a/common-logging/pom.xml b/common-logging/pom.xml index 82849b93..747e4b2a 100644 --- a/common-logging/pom.xml +++ b/common-logging/pom.xml @@ -2,7 +2,7 @@ ============LICENSE_START======================================================= ONAP Policy Engine - Common Modules ================================================================================ - Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. + Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved. ================================================================================ Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. @@ -31,6 +31,10 @@ <artifactId>ONAP-Logging</artifactId> <description>ONAP Logging Framework</description> <packaging>jar</packaging> + + <properties> + <powermock.version>1.6.6</powermock.version> + </properties> <dependencies> <dependency> @@ -54,6 +58,12 @@ <artifactId>eelf-core</artifactId> <version>1.0.1-oss</version> </dependency> + <dependency> + <groupId>org.powermock</groupId> + <artifactId>powermock-api-mockito</artifactId> + <version>${powermock.version}</version> + <scope>test</scope> + </dependency> </dependencies> <build> diff --git a/common-logging/src/main/java/org/onap/policy/common/logging/flexlogger/PropertyUtil.java b/common-logging/src/main/java/org/onap/policy/common/logging/flexlogger/PropertyUtil.java index 54e06411..566362c9 100644 --- a/common-logging/src/main/java/org/onap/policy/common/logging/flexlogger/PropertyUtil.java +++ b/common-logging/src/main/java/org/onap/policy/common/logging/flexlogger/PropertyUtil.java @@ -36,9 +36,14 @@ import java.util.TimerTask; * notifications of future changes. */ public class PropertyUtil { - - // timer thread used for polling for property file changes - private static Timer timer = null; + + protected static class LazyHolder { + /** + * Timer thread. Will not be allocated by the JVM until it is first referenced. + * This may be overridden by junit tests. + */ + private static Timer timer = new Timer("PropertyUtil-Timer", true); + } // this table maps canonical file into a 'ListenerRegistration' instance private static HashMap<File, ListenerRegistration> registrations = new HashMap<>(); @@ -138,17 +143,6 @@ public class PropertyUtil { // add to static table, so this instance can be shared registrations.put(file, this); - if (timer == null) { - // still need to create a timer thread - synchronized (PropertyUtil.class) { - // an additional check is added inside the 'synchronized' block, - // just in case someone beat us to it - if (timer == null) { - timer = new Timer("PropertyUtil-Timer", true); - } - } - } - // create and schedule the timer task, so this is periodically polled timerTask = new TimerTask() { @Override @@ -160,7 +154,7 @@ public class PropertyUtil { } } }; - timer.schedule(timerTask, 10000L, 10000L); + LazyHolder.timer.schedule(timerTask, 10000L, 10000L); } /** diff --git a/common-logging/src/test/java/org/onap/policy/common/logging/flexlogger/PropertyUtilTest.java b/common-logging/src/test/java/org/onap/policy/common/logging/flexlogger/PropertyUtilTest.java index d97df4ce..b4fcfc18 100644 --- a/common-logging/src/test/java/org/onap/policy/common/logging/flexlogger/PropertyUtilTest.java +++ b/common-logging/src/test/java/org/onap/policy/common/logging/flexlogger/PropertyUtilTest.java @@ -2,7 +2,7 @@ * ============LICENSE_START======================================================= * ONAP-Logging * ================================================================================ - * Copyright (C) 2018 Ericsson. All rights reserved. + * Copyright (C) 2018 Ericsson, AT&T. All rights reserved. * ================================================================================ * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -21,29 +21,70 @@ package org.onap.policy.common.logging.flexlogger; import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertNotNull; import static org.junit.Assert.assertTrue; - +import static org.mockito.Matchers.any; +import static org.mockito.Matchers.anyLong; +import static org.mockito.Mockito.doAnswer; +import static org.mockito.Mockito.mock; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.util.Properties; import java.util.Set; - +import java.util.Timer; +import java.util.TimerTask; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.TimeUnit; import org.junit.After; +import org.junit.AfterClass; import org.junit.Before; +import org.junit.BeforeClass; import org.junit.Test; import org.onap.policy.common.logging.flexlogger.PropertyUtil.Listener; +import org.powermock.reflect.Whitebox; public class PropertyUtilTest { + /** + * + */ + private static final String TIMER_FIELD = "timer"; private static final File FILE = new File("target/test.properties"); - private TestListener testListener = new TestListener(); + private static Timer saveTimer; + + private TimerTask task; + private Timer timer; + private TestListener testListener; + + @BeforeClass + public static void setUpBeforeClass() { + saveTimer = Whitebox.getInternalState(PropertyUtil.LazyHolder.class, TIMER_FIELD); + + } + + @AfterClass + public static void tearDownAfterClass() { + Whitebox.setInternalState(PropertyUtil.LazyHolder.class, TIMER_FIELD, saveTimer); + + } /** * Perform test case set up. */ @Before public void setUp() throws IOException { + task = null; + timer = mock(Timer.class); + Whitebox.setInternalState(PropertyUtil.LazyHolder.class, TIMER_FIELD, timer); + + doAnswer(args -> { + task = args.getArgumentAt(0, TimerTask.class); + return null; + }).when(timer).schedule(any(TimerTask.class), anyLong(), anyLong()); + + testListener = new TestListener(); + FileOutputStream fileOutputStream = new FileOutputStream(FILE); Properties properties = new Properties(); properties.put("testProperty", "testValue"); @@ -56,6 +97,11 @@ public class PropertyUtilTest { PropertyUtil.stopListening(FILE, testListener); FILE.delete(); } + + @Test + public void testTimer() { + assertNotNull(saveTimer); + } @Test public void testGetProperties() throws IOException { @@ -78,6 +124,8 @@ public class PropertyUtilTest { newProperties.put("testProperty", "testValueNew"); newProperties.store(fileOutputStream, ""); + // fire task and verify that it notifies the listener + task.run(); assertTrue(testListener.isPropertiesChangedInvoked()); } @@ -104,23 +152,21 @@ public class PropertyUtilTest { assertEquals("testValueNew", readProperties.getProperty("testProperty")); } + /** + * The {@link #propertiesChanged(Properties, Set)} method is invoked via a background + * thread, thus we have to use a latch to wait for it to be invoked. + */ private class TestListener implements Listener { - boolean propertiesChangedInvoked = false; + private CountDownLatch latch = new CountDownLatch(1); @Override public void propertiesChanged(Properties properties, Set<String> changedKeys) { - propertiesChangedInvoked = true; + latch.countDown(); } public boolean isPropertiesChangedInvoked() throws InterruptedException { - for (int i = 0; i < 20; i++) { - if (propertiesChangedInvoked) { - return true; - } - Thread.sleep(1000); - } - return false; + return latch.await(5, TimeUnit.SECONDS); } } |