/*
* 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.cassandra.db;

import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;

import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.Util;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.config.ParameterizedClass;
import org.apache.cassandra.db.commitlog.CommitLog;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.io.compress.DeflateCompressor;
import org.apache.cassandra.io.compress.LZ4Compressor;
import org.apache.cassandra.io.compress.SnappyCompressor;
import org.apache.cassandra.schema.KeyspaceParams;

import static org.junit.Assert.assertTrue;

/**
 * Test for the truncate operation.
 */
@RunWith(Parameterized.class)
public class RecoveryManagerTruncateTest
{
    private static final String KEYSPACE1 = "RecoveryManagerTruncateTest";
    private static final String CF_STANDARD1 = "Standard1";

    public RecoveryManagerTruncateTest(ParameterizedClass commitLogCompression)
    {
        DatabaseDescriptor.setCommitLogCompression(commitLogCompression);
    }

    @Before
    public void setUp() throws IOException
    {
        CommitLog.instance.resetUnsafe(true);
    }

    @Parameters()
    public static Collection<Object[]> generateData()
    {
        return Arrays.asList(new Object[][] {
                { null }, // No compression
                { new ParameterizedClass(LZ4Compressor.class.getName(), Collections.emptyMap()) },
                { new ParameterizedClass(SnappyCompressor.class.getName(), Collections.emptyMap()) },
                { new ParameterizedClass(DeflateCompressor.class.getName(), Collections.emptyMap()) } });
    }

    @BeforeClass
    public static void defineSchema() throws ConfigurationException
    {
        SchemaLoader.prepareServer();
        SchemaLoader.createKeyspace(KEYSPACE1,
                                    KeyspaceParams.simple(1),
                                    SchemaLoader.standardCFMD(KEYSPACE1, CF_STANDARD1));
    }

    @Test
    public void testTruncate() throws IOException
    {
        Keyspace keyspace = Keyspace.open(KEYSPACE1);
        ColumnFamilyStore cfs = keyspace.getColumnFamilyStore("Standard1");

        // add a single cell
        new RowUpdateBuilder(cfs.metadata, 0, "key1")
            .clustering("cc")
            .add("val", "val1")
            .build()
            .applyUnsafe();

        // Make sure data was written
        assertTrue(Util.getAll(Util.cmd(cfs).build()).size() > 0);

        // and now truncate it
        cfs.truncateBlocking();
        assert 0 != CommitLog.instance.resetUnsafe(false);

        // and validate truncation.
        Util.assertEmptyUnfiltered(Util.cmd(cfs).build());
    }
}