org.apache.drill.exec.rpc.user.TemporaryTablesAutomaticDropTest.java Source code

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Here is the source code for org.apache.drill.exec.rpc.user.TemporaryTablesAutomaticDropTest.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.drill.exec.rpc.user;

import mockit.Mock;
import mockit.MockUp;
import org.apache.drill.exec.store.StorageStrategy;
import org.apache.drill.test.BaseTestQuery;
import org.apache.drill.common.config.DrillConfig;
import org.apache.drill.exec.store.StoragePluginRegistry;
import org.apache.drill.exec.util.StoragePluginTestUtils;
import org.apache.drill.test.DirTestWatcher;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.LocatedFileStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.RemoteIterator;
import org.junit.Before;
import org.junit.Test;

import java.io.File;
import java.util.UUID;

import static org.apache.drill.exec.util.StoragePluginTestUtils.DFS_TMP_SCHEMA;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

public class TemporaryTablesAutomaticDropTest extends BaseTestQuery {

    private static final UUID SESSION_UUID = UUID.randomUUID();

    @Before
    public void setup() {
        new MockUp<UUID>() {
            @Mock
            public UUID randomUUID() {
                return SESSION_UUID;
            }
        };
        updateTestCluster(1, DrillConfig.create(cloneDefaultTestConfigProperties()));
    }

    @Test
    public void testAutomaticDropWhenClientIsClosed() throws Exception {
        final File sessionTemporaryLocation = createAndCheckSessionTemporaryLocation("client_closed",
                dirTestWatcher.getDfsTestTmpDir());

        updateClient("new_client");
        assertFalse("Session temporary location should be absent", sessionTemporaryLocation.exists());
    }

    @Test
    public void testAutomaticDropWhenDrillbitIsClosed() throws Exception {
        final File sessionTemporaryLocation = createAndCheckSessionTemporaryLocation("drillbit_closed",
                dirTestWatcher.getDfsTestTmpDir());
        bits[0].close();
        assertFalse("Session temporary location should be absent", sessionTemporaryLocation.exists());
    }

    @Test
    public void testAutomaticDropOfSeveralSessionTemporaryLocations() throws Exception {
        final File firstSessionTemporaryLocation = createAndCheckSessionTemporaryLocation("first_location",
                dirTestWatcher.getDfsTestTmpDir());
        final StoragePluginRegistry pluginRegistry = getDrillbitContext().getStorage();
        final File tempDir = DirTestWatcher.createTempDir(dirTestWatcher.getDir());

        try {
            StoragePluginTestUtils.updateSchemaLocation(StoragePluginTestUtils.DFS_PLUGIN_NAME, pluginRegistry,
                    tempDir);
            final File secondSessionTemporaryLocation = createAndCheckSessionTemporaryLocation("second_location",
                    tempDir);
            updateClient("new_client");
            assertFalse("First session temporary location should be absent",
                    firstSessionTemporaryLocation.exists());
            assertFalse("Second session temporary location should be absent",
                    secondSessionTemporaryLocation.exists());
        } finally {
            StoragePluginTestUtils.updateSchemaLocation(StoragePluginTestUtils.DFS_PLUGIN_NAME, pluginRegistry,
                    dirTestWatcher.getDfsTestTmpDir());
        }
    }

    private File createAndCheckSessionTemporaryLocation(String suffix, File schemaLocation) throws Exception {
        String temporaryTableName = "temporary_table_automatic_drop_" + suffix;
        File sessionTemporaryLocation = schemaLocation.toPath().resolve(SESSION_UUID.toString()).toFile();

        test("create TEMPORARY table %s.%s as select 'A' as c1 from (values(1))", DFS_TMP_SCHEMA,
                temporaryTableName);

        FileSystem fs = getLocalFileSystem();
        Path sessionPath = new Path(sessionTemporaryLocation.getAbsolutePath());
        assertTrue("Session temporary location should exist", fs.exists(sessionPath));
        assertEquals("Directory permission should match", StorageStrategy.TEMPORARY.getFolderPermission(),
                fs.getFileStatus(sessionPath).getPermission());
        Path tempTablePath = new Path(sessionPath, SESSION_UUID.toString());
        assertTrue("Temporary table location should exist", fs.exists(tempTablePath));
        assertEquals("Directory permission should match", StorageStrategy.TEMPORARY.getFolderPermission(),
                fs.getFileStatus(tempTablePath).getPermission());
        RemoteIterator<LocatedFileStatus> fileIterator = fs.listFiles(tempTablePath, false);
        while (fileIterator.hasNext()) {
            LocatedFileStatus file = fileIterator.next();
            assertEquals("File permission should match", StorageStrategy.TEMPORARY.getFilePermission(),
                    file.getPermission());
        }
        return sessionTemporaryLocation;
    }
}