fe/fe-core/src/test/java/org/apache/doris/common/util/MetaLockUtilsTest.java

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// to you under the Apache License, Version 2.0 (the
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//   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.doris.common.util;

import com.google.common.collect.Lists;
import org.apache.doris.catalog.Database;
import org.apache.doris.catalog.Table;
import org.junit.Assert;
import org.junit.Test;

import java.util.List;
import java.util.concurrent.TimeUnit;

public class MetaLockUtilsTest {

    @Test
    public void testReadLockDatabases() {
        List<Database> databaseList = Lists.newArrayList(new Database(), new Database());
        MetaLockUtils.readLockDatabases(databaseList);
        Assert.assertFalse(databaseList.get(0).tryWriteLock(1, TimeUnit.MILLISECONDS));
        Assert.assertFalse(databaseList.get(1).tryWriteLock(1, TimeUnit.MILLISECONDS));
        MetaLockUtils.readUnlockDatabases(databaseList);
        Assert.assertTrue(databaseList.get(0).tryWriteLock(1, TimeUnit.MILLISECONDS));
        Assert.assertTrue(databaseList.get(1).tryWriteLock(1, TimeUnit.MILLISECONDS));
        databaseList.get(0).writeUnlock();
        databaseList.get(1).writeUnlock();
    }

    @Test
    public void testReadLockTables() {
        List<Table> tableList = Lists.newArrayList(new Table(Table.TableType.OLAP), new Table(Table.TableType.OLAP));
        MetaLockUtils.readLockTables(tableList);
        Assert.assertFalse(tableList.get(0).tryWriteLock(1, TimeUnit.MILLISECONDS));
        Assert.assertFalse(tableList.get(1).tryWriteLock(1, TimeUnit.MILLISECONDS));
        MetaLockUtils.readUnlockTables(tableList);
        Assert.assertTrue(tableList.get(0).tryWriteLock(1, TimeUnit.MILLISECONDS));
        Assert.assertTrue(tableList.get(1).tryWriteLock(1, TimeUnit.MILLISECONDS));
        tableList.get(0).writeUnlock();
        tableList.get(1).writeUnlock();
    }

    @Test
    public void testWriteLockTables() {
        List<Table> tableList = Lists.newArrayList(new Table(Table.TableType.OLAP), new Table(Table.TableType.OLAP));
        MetaLockUtils.writeLockTables(tableList);
        Assert.assertTrue(tableList.get(0).isWriteLockHeldByCurrentThread());
        Assert.assertTrue(tableList.get(1).isWriteLockHeldByCurrentThread());
        MetaLockUtils.writeUnlockTables(tableList);
        Assert.assertFalse(tableList.get(0).isWriteLockHeldByCurrentThread());
        Assert.assertFalse(tableList.get(1).isWriteLockHeldByCurrentThread());
        Assert.assertTrue(MetaLockUtils.tryWriteLockTables(tableList, 1, TimeUnit.MILLISECONDS));
        Assert.assertTrue(tableList.get(0).isWriteLockHeldByCurrentThread());
        Assert.assertTrue(tableList.get(1).isWriteLockHeldByCurrentThread());
        MetaLockUtils.writeUnlockTables(tableList);
        tableList.get(1).readLock();
        Assert.assertFalse(MetaLockUtils.tryWriteLockTables(tableList, 1, TimeUnit.MILLISECONDS));
        Assert.assertFalse(tableList.get(0).isWriteLockHeldByCurrentThread());
        Assert.assertFalse(tableList.get(1).isWriteLockHeldByCurrentThread());
        tableList.get(1).readUnlock();
    }
}