src/java/org/apache/cassandra/io/util/DiskAwareRunnable.java

/*
 * 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.io.util;

import java.io.IOException;

import org.apache.cassandra.db.Directories;
import org.apache.cassandra.io.FSWriteError;
import org.apache.cassandra.utils.WrappedRunnable;

public abstract class DiskAwareRunnable extends WrappedRunnable
{
    protected Directories.DataDirectory getWriteDirectory(long writeSize)
    {
        Directories.DataDirectory directory = getDirectories().getWriteableLocation(writeSize);
        if (directory == null)
            throw new FSWriteError(new IOException("Insufficient disk space to write " + writeSize + " bytes"), "");

        return directory;
    }

    /**
     * Get sstable directories for the CF.
     * @return Directories instance for the CF.
     */
    protected abstract Directories getDirectories();
}