[GitHub] [calcite] vlsi commented on a change in pull request #1798: [CALCITE-2442] Remove .toDelete cassandra temp folder on Windows after tests

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vlsi commented on a change in pull request #1798: [CALCITE-2442] Remove .toDelete cassandra temp folder on Windows after tests
URL: https://github.com/apache/calcite/pull/1798#discussion_r378509030
 
 

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 File path: cassandra/src/test/java/org/apache/calcite/test/CassandraExtension.java
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+/*
+ * 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.calcite.test;
+
+import org.apache.calcite.config.CalciteSystemProperty;
+import org.apache.calcite.util.Bug;
+import org.apache.calcite.util.Sources;
+import org.apache.calcite.util.TestUtil;
+
+import org.apache.cassandra.concurrent.StageManager;
+import org.apache.cassandra.config.DatabaseDescriptor;
+import org.apache.cassandra.db.WindowsFailedSnapshotTracker;
+import org.apache.cassandra.service.CassandraDaemon;
+import org.apache.cassandra.service.StorageService;
+import org.apache.cassandra.utils.FBUtilities;
+import org.apache.thrift.transport.TTransportException;
+
+import com.datastax.driver.core.Cluster;
+import com.datastax.driver.core.Session;
+import com.google.common.collect.ImmutableMap;
+
+import org.cassandraunit.utils.EmbeddedCassandraServerHelper;
+import org.junit.jupiter.api.extension.ConditionEvaluationResult;
+import org.junit.jupiter.api.extension.ExecutionCondition;
+import org.junit.jupiter.api.extension.ExtensionConfigurationException;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.ParameterContext;
+import org.junit.jupiter.api.extension.ParameterResolutionException;
+import org.junit.jupiter.api.extension.ParameterResolver;
+
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.lang.reflect.Field;
+import java.time.Duration;
+import java.util.Locale;
+import java.util.concurrent.ExecutionException;
+
+/**
+ * JUnit5 extension to start and stop embedded cassandra server.
+ *
+ * <p>Note that tests will be skipped if running on JDK11+
+ * (which is not yet supported by cassandra) see
+ *  <a href="https://issues.apache.org/jira/browse/CASSANDRA-9608">CASSANDRA-9608</a>.
+ */
+class CassandraExtension implements ParameterResolver, ExecutionCondition {
+
+  private static final ExtensionContext.Namespace NAMESPACE =
+      ExtensionContext.Namespace.create(CassandraExtension.class);
+
+  private static final String KEY = "cassandra";
+
+  @Override public boolean supportsParameter(final ParameterContext parameterContext,
+      final ExtensionContext extensionContext) throws ParameterResolutionException {
+    final Class<?> type = parameterContext.getParameter().getType();
+    return Session.class.isAssignableFrom(type) || Cluster.class.isAssignableFrom(type);
+  }
+
+  @Override public Object resolveParameter(final ParameterContext parameterContext,
+      final ExtensionContext extensionContext) throws ParameterResolutionException {
+
+    Class<?> type = parameterContext.getParameter().getType();
+    if (Session.class.isAssignableFrom(type)) {
+      return getOrCreate(extensionContext).session;
+    } else if (Cluster.class.isAssignableFrom(type)) {
+      return getOrCreate(extensionContext).cluster;
+    }
+
+    throw new ExtensionConfigurationException(
+        String.format(Locale.ROOT, "%s supports only %s or %s but yours was %s",
+        CassandraExtension.class.getSimpleName(),
+        Session.class.getName(), Cluster.class.getName(), type.getName()));
+  }
+
+  static ImmutableMap<String, String> getDataset(String resourcePath) {
+    return ImmutableMap.of("model",
+        Sources.of(CassandraExtension.class.getResource(resourcePath))
+            .file().getAbsolutePath());
+  }
+
+  /**
+   * Register cassandra resource in root context so it can be shared with other tests
+   */
+  private static CassandraResource getOrCreate(ExtensionContext context) {
+    // same cassandra instance should be shared across all extension instances
+    return context.getRoot()
+        .getStore(NAMESPACE)
+        .getOrComputeIfAbsent(KEY, key -> new CassandraResource(), CassandraResource.class);
+  }
+
+  /**
+   * Whether to run this test.
+   * <p>Enabled by default, unless explicitly disabled
+   * from command line ({@code -Dcalcite.test.cassandra=false}) or running on incompatible JDK
+   * version (see below).
+   *
+   * <p>As of this wiring Cassandra 4.x is not yet released and we're using 3.x
+   * (which fails on JDK11+). All cassandra tests will be skipped if
+   * running on JDK11+.
+   *
+   * @see <a href="https://issues.apache.org/jira/browse/CASSANDRA-9608">CASSANDRA-9608</a>
+   * @return {@code true} if test is compatible with current environment,
+   *         {@code false} otherwise
+   */
+  @Override public ConditionEvaluationResult evaluateExecutionCondition(
+      final ExtensionContext context) {
+    boolean enabled = CalciteSystemProperty.TEST_CASSANDRA.value();
+    Bug.upgrade("remove JDK version check once current adapter supports Cassandra 4.x");
+    boolean compatibleJdk = TestUtil.getJavaMajorVersion() < 11;
+    if (enabled && compatibleJdk) {
+      return ConditionEvaluationResult.enabled("Cassandra enabled");
+    }
+    return ConditionEvaluationResult.disabled("Cassandra tests disabled");
+  }
+
+  private static class CassandraResource implements ExtensionContext.Store.CloseableResource {
+    private final Session session;
+    private final Cluster cluster;
+
+    private CassandraResource() {
+      startCassandra();
+      this.cluster = EmbeddedCassandraServerHelper.getCluster();
+      this.session = EmbeddedCassandraServerHelper.getSession();
+    }
+
+    /**
+     * Best effort to gracefully shutdown <strong>embedded</strong> cassandra cluster.
+     *
+     * Since it uses many static variables as well as {@link System#exit(int)} during close,
+     * clean shutdown (as part of unit test) is not straightforward.
+     */
+    @Override public void close() {
+
+      session.close();
+      cluster.close();
+
+      CassandraDaemon daemon = extractDaemon();
+      if (daemon.thriftServer != null) {
+        daemon.thriftServer.stop();
+      }
+      daemon.stopNativeTransport();
+
+      StorageService storage = StorageService.instance;
+      storage.setRpcReady(false);
+      storage.stopClient();
+      storage.stopTransports();
+      try {
+        storage.drain(); // try to close all resources
+      } catch (IOException | ExecutionException e) {
+        throw new RuntimeException(e);
+      } catch (InterruptedException e) {
+        Thread.currentThread().interrupt();
+      }
+      StageManager.shutdownNow();
+
+      if (FBUtilities.isWindows) {
+        // for some reason .toDelete stale folder is not deleted on cassandra shutdown
+        // doing it manually here
+        WindowsFailedSnapshotTracker.resetForTests();
+        WindowsFailedSnapshotTracker.deleteOldSnapshots();
+      }
+    }
+
+    private static void startCassandra() {
+      // This static init is necessary otherwise tests fail with CassandraUnit in IntelliJ (jdk10)
+      // should be called right after constructor
+      // NullPointerException for DatabaseDescriptor.getDiskFailurePolicy
+      // for more info see
+      // https://github.com/jsevellec/cassandra-unit/issues/249
+      // https://github.com/jsevellec/cassandra-unit/issues/221
+      DatabaseDescriptor.daemonInitialization();
+
+      // Apache Jenkins often fails with
+      // Cassandra daemon did not start within timeout (20 sec by default)
+      try {
+        EmbeddedCassandraServerHelper.startEmbeddedCassandra(Duration.ofMinutes(1).toMillis());
+      } catch (TTransportException e) {
+        throw new RuntimeException(e);
+      } catch (IOException e) {
+        throw new UncheckedIOException(e);
+      }
+    }
+
+    /**
+     * Extract {@link CassandraDaemon} instance using reflection. It will be used
+     * to shutdown the cluster
+     */
+    private static CassandraDaemon extractDaemon() {
+      try {
+        Field field = EmbeddedCassandraServerHelper.class.getDeclaredField("cassandraDaemon");
+        field.setAccessible(true);
+        CassandraDaemon daemon = (CassandraDaemon) field.get(null);
 
 Review comment:
   Is this really required?
   I thought it should have a way to properly shutdown cassandra

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