Cleanup all SSL configuration and state in Apache Geode.

spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/integration/IntegrationTestsSupport.java

@@ -21,6 +21,7 @@ import static org.springframework.data.gemfire.util.ArrayUtils.nullSafeArray;
 
 import java.io.File;
 import java.io.IOException;
+import java.lang.reflect.Field;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.List;
@@ -35,6 +36,7 @@ import org.apache.geode.cache.CacheClosedException;
 import org.apache.geode.cache.GemFireCache;
 import org.apache.geode.distributed.Locator;
 import org.apache.geode.internal.InternalDataSerializer;
+import org.apache.geode.internal.net.SSLConfigurationFactory;
 import org.apache.geode.internal.net.SocketCreatorFactory;
 
 import org.junit.AfterClass;
@@ -46,6 +48,7 @@ import org.springframework.data.gemfire.support.GemfireBeanFactoryLocator;
 import org.springframework.data.gemfire.tests.mock.GemFireMockObjectsSupport;
 import org.springframework.data.gemfire.tests.util.FileUtils;
 import org.springframework.data.gemfire.util.CollectionUtils;
+import org.springframework.util.ReflectionUtils;
 
 /**
  * The {@link IntegrationTestsSupport} class is an abstract base class supporting integration tests
@@ -55,7 +58,11 @@ import org.springframework.data.gemfire.util.CollectionUtils;
  * @see java.io.File
  * @see java.time.LocalDateTime
  * @see java.util.concurrent.TimeUnit
+ * @see java.util.concurrent.atomic.AtomicBoolean
+ * @see java.util.function.Predicate
+ * @see org.apache.geode.DataSerializer
  * @see org.apache.geode.cache.GemFireCache
+ * @see org.apache.geode.distributed.Locator
  * @see org.springframework.data.gemfire.tests.mock.GemFireMockObjectsSupport
  * @since 1.0.0
  */
@@ -114,7 +121,31 @@ public abstract class IntegrationTestsSupport {
 	@BeforeClass
 	public static void closeAnyExistingSocketConfigurationBeforeTestExecution() {
 		SocketCreatorFactory.close();
+	}
+
+	@BeforeClass
+	// TODO: Remove once GEODE-7157 (https://issues.apache.org/jira/browse/GEODE-7157) is fixed!
+	//  Do the job of Apache Geode & Pivotal GemFire since it cannot do its own damn job!
+	public static void closeAnyExistingSslConfigurationBeforeTestExecution() {
+
 		//SSLConfigurationFactory.close();
+
+		synchronized (SSLConfigurationFactory.class) {
+			try {
+
+				Field instance = ReflectionUtils.findField(SSLConfigurationFactory.class, "instance",
+					SSLConfigurationFactory.class);
+
+				Optional.ofNullable(instance)
+					.ifPresent(field -> {
+						ReflectionUtils.makeAccessible(field);
+						ReflectionUtils.setField(field, null, null);
+					});
+			}
+			catch (Throwable ignore) {
+				// Not much we can do about it now!
+			}
+		}
 	}
 
 	@BeforeClass

spring-data-geode-test/src/test/java/org/springframework/data/gemfire/tests/integration/SslConfigurationIntegrationTests.java

@@ -0,0 +1,69 @@
+/*
+ *  Copyright 2019 the original author or authors.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ *  or implied. See the License for the specific language governing
+ *  permissions and limitations under the License.
+ */
+package org.springframework.data.gemfire.tests.integration;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.lang.reflect.Method;
+import java.util.Optional;
+
+import org.apache.geode.internal.net.SSLConfigurationFactory;
+
+import org.junit.Test;
+
+import org.springframework.util.ReflectionUtils;
+
+/**
+ * Integration Tests asserting that {@link IntegrationTestsSupport} clears the SSL configuration of Apache Geode
+ * between test case runs.
+ *
+ * @author John Blum
+ * @see org.apache.geode.internal.net.SSLConfigurationFactory
+ * @see org.springframework.data.gemfire.tests.integration.IntegrationTestsSupport
+ * @since 0.0.8
+ */
+public class SslConfigurationIntegrationTests {
+
+	private SSLConfigurationFactory getInstance() {
+
+		Method getInstance = ReflectionUtils.findMethod(SSLConfigurationFactory.class, "getInstance");
+
+		return Optional.ofNullable(getInstance)
+			.map(method -> {
+
+				ReflectionUtils.makeAccessible(method);
+
+				return (SSLConfigurationFactory) ReflectionUtils.invokeMethod(method, null);
+			})
+			.orElse(null);
+	}
+
+	@Test
+	public void getInstanceReturnsSameReferenceBeforeCloseThenReturnsDifferentReferenceAfterClose() {
+
+		SSLConfigurationFactory sslConfigurationFactoryOne = getInstance();
+
+		assertThat(sslConfigurationFactoryOne).isNotNull();
+		assertThat(getInstance()).isSameAs(sslConfigurationFactoryOne);
+
+		IntegrationTestsSupport.closeAnyExistingSslConfigurationBeforeTestExecution();
+
+		SSLConfigurationFactory sslConfigurationFactoryTwo = getInstance();
+
+		assertThat(sslConfigurationFactoryTwo).isNotNull();
+		assertThat(sslConfigurationFactoryTwo).isNotSameAs(sslConfigurationFactoryOne);
+	}
+}