Bill commented on a change in pull request #7119:
URL: https://github.com/apache/geode/pull/7119#discussion_r759561184



##########
File path: 
geode-assembly/src/upgradeTest/java/org/apache/geode/management/RollingUpgradeWithSslDUnitTest.java
##########
@@ -0,0 +1,276 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license
+ * agreements. See the NOTICE file distributed with this work for additional 
information regarding
+ * copyright ownership. The ASF licenses this file to You 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
+ *
+ * http://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.apache.geode.management;
+
+import static 
org.apache.geode.distributed.ConfigurationProperties.BIND_ADDRESS;
+import static 
org.apache.geode.distributed.ConfigurationProperties.SSL_ENABLED_COMPONENTS;
+import static 
org.apache.geode.distributed.ConfigurationProperties.SSL_ENDPOINT_IDENTIFICATION_ENABLED;
+import static 
org.apache.geode.distributed.ConfigurationProperties.SSL_KEYSTORE;
+import static 
org.apache.geode.distributed.ConfigurationProperties.SSL_KEYSTORE_PASSWORD;
+import static 
org.apache.geode.distributed.ConfigurationProperties.SSL_KEYSTORE_TYPE;
+import static 
org.apache.geode.distributed.ConfigurationProperties.SSL_REQUIRE_AUTHENTICATION;
+import static 
org.apache.geode.distributed.ConfigurationProperties.SSL_TRUSTSTORE;
+import static 
org.apache.geode.distributed.ConfigurationProperties.SSL_TRUSTSTORE_PASSWORD;
+import static 
org.apache.geode.distributed.ConfigurationProperties.SSL_TRUSTSTORE_TYPE;
+import static 
org.apache.geode.test.junit.rules.gfsh.GfshRule.startLocatorCommand;
+import static 
org.apache.geode.test.junit.rules.gfsh.GfshRule.startServerCommand;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.security.GeneralSecurityException;
+import java.util.Collection;
+import java.util.List;
+import java.util.Properties;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+import org.junit.rules.TemporaryFolder;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+import org.apache.geode.cache.ssl.CertStores;
+import org.apache.geode.cache.ssl.CertificateBuilder;
+import org.apache.geode.cache.ssl.CertificateMaterial;
+import org.apache.geode.internal.UniquePortSupplier;
+import org.apache.geode.test.junit.categories.BackwardCompatibilityTest;
+import org.apache.geode.test.junit.rules.gfsh.GfshExecution;
+import org.apache.geode.test.junit.rules.gfsh.GfshRule;
+import org.apache.geode.test.junit.rules.gfsh.GfshScript;
+import 
org.apache.geode.test.junit.runners.CategoryWithParameterizedRunnerFactory;
+import org.apache.geode.test.version.TestVersion;
+import org.apache.geode.test.version.VersionManager;
+
+/**
+ * This test iterates through the versions of Geode and executes client 
compatibility with
+ * the current version of Geode.
+ */
+@Category({BackwardCompatibilityTest.class})
+@RunWith(Parameterized.class)
[email protected](CategoryWithParameterizedRunnerFactory.class)
+public class RollingUpgradeWithSslDUnitTest {
+  private final UniquePortSupplier portSupplier = new UniquePortSupplier();
+  private final String hostName;
+  private final String keyStoreFileName;
+  private final String trustStoreFileName;
+  private File securityPropertiesFile;
+
+  @Parameterized.Parameters(name = "{0}")
+  public static Collection<String> data() {
+    final List<String> result = 
VersionManager.getInstance().getVersionsWithoutCurrent();
+    result.removeIf(s -> TestVersion.compare(s, "1.10.0") < 0);
+    return result;
+  }
+
+  @Rule
+  public GfshRule oldGfsh;
+
+  @Rule
+  public GfshRule currentGfsh;
+
+  @Rule
+  public TemporaryFolder tempFolder = new TemporaryFolder();
+
+  public RollingUpgradeWithSslDUnitTest(String version) throws 
UnknownHostException {
+    oldGfsh = new GfshRule(version);
+    currentGfsh = new GfshRule();
+    hostName = InetAddress.getLocalHost().getCanonicalHostName();
+    keyStoreFileName = hostName + "-keystore.jks";
+    trustStoreFileName = hostName + "-truststore.jks";
+  }
+
+  @Before
+  public void before() throws IOException, GeneralSecurityException {
+    generateStores();
+    /*
+     * We must use absolute paths for truststore and keystore in properties 
file and
+     * since we don't know those at coding-time, we must generate the file.
+     * Since GfshRule provides no way to pass along Properties object to start 
server etc,
+     * we must write the properties to an actual file.
+     */
+    final Properties properties = generateSslProperties();
+
+    securityPropertiesFile = tempFolder.newFile("gfsecurity.properties");
+    final FileOutputStream fileOutputStream =
+        new FileOutputStream(securityPropertiesFile.getAbsolutePath());
+    properties.store(fileOutputStream, "");
+  }
+
+  @Test
+  public void testRollingUpgradeWithDeployment() throws Exception {
+    final int locatorPort = portSupplier.getAvailablePort();
+    final int locatorJmxPort = portSupplier.getAvailablePort();
+    final int locator2Port = portSupplier.getAvailablePort();
+    final int locator2JmxPort = portSupplier.getAvailablePort();
+    final int server1Port = portSupplier.getAvailablePort();
+    final int server2Port = portSupplier.getAvailablePort();
+
+    final GfshExecution startupExecution =
+        GfshScript.of(
+            startLocatorCommandWithConfig("locator1", locatorPort, 
locatorJmxPort, -1))
+            .and(startLocatorCommandWithConfig("locator2", locator2Port, 
locator2JmxPort,
+                locatorPort))
+            .and(startServerCommandWithConfig("server1", server1Port, 
locatorPort))
+            .and(startServerCommandWithConfig("server2", server2Port, 
locatorPort))
+            .execute(oldGfsh, tempFolder.getRoot());
+
+    initializeRegion(locatorPort);
+    causeP2PTraffic(locatorPort);
+
+    // doing rolling upgrades
+    upgradeLocator("locator1", locatorPort, locatorJmxPort, locator2Port, 
startupExecution);
+    verifyListMembers(locatorPort);
+    causeP2PTraffic(locatorPort);
+
+    upgradeLocator("locator2", locator2Port, locator2JmxPort, locatorPort, 
startupExecution);
+    verifyListMembers(locatorPort);
+    causeP2PTraffic(locatorPort);
+
+    // make sure servers can do rolling upgrade too
+    upgradeServer("server1", server1Port, locatorPort, startupExecution);
+    causeP2PTraffic(locatorPort);
+
+    upgradeServer("server2", server2Port, locatorPort, startupExecution);
+    causeP2PTraffic(locatorPort);
+  }
+
+  private void upgradeLocator(String name, int locatorPort, int locatorJmxPort,
+      int connectedLocatorPort,
+      GfshExecution startupExecution) {
+    oldGfsh.stopLocator(startupExecution, name);
+    GfshScript
+        .of(startLocatorCommandWithConfig(name, locatorPort, locatorJmxPort, 
connectedLocatorPort))
+        .execute(currentGfsh, tempFolder.getRoot());
+  }
+
+  private void upgradeServer(String name, int serverPort, int locatorPort,
+      GfshExecution startupExecution) {
+    oldGfsh.stopServer(startupExecution, name);
+    GfshScript.of(startServerCommandWithConfig(name, serverPort, locatorPort))

Review comment:
       We'll consider these improvement suggestions in a future PR.




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