com.github.neoio.nio.impl.FileChannelIOStagingFactory.java Source code

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Here is the source code for com.github.neoio.nio.impl.FileChannelIOStagingFactory.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 com.github.neoio.nio.impl;

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.FileUtils;
import org.apache.commons.lang.SystemUtils;
import org.apache.commons.lang.math.JVMRandom;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.github.neoio.net.exception.NetIOException;
import com.github.neoio.nio.Directory;
import com.github.neoio.nio.IOStaging;
import com.github.neoio.nio.IOStagingFactory;

public class FileChannelIOStagingFactory implements IOStagingFactory {
    private static JVMRandom random = new JVMRandom();
    private Logger logger = LoggerFactory.getLogger(this.getClass());
    private File baseStagingDir;

    public FileChannelIOStagingFactory() {
        this(new SimpleDirectory(SystemUtils.JAVA_IO_TMPDIR));
    }

    public FileChannelIOStagingFactory(Directory baseStagingDir) {
        this.baseStagingDir = baseStagingDir.toFile();
    }

    @Override
    public IOStaging newInstance() throws NetIOException {
        File file;

        do {
            file = new File(baseStagingDir, random.nextLong() + ".stg");
        } while (file.exists() == true);

        logger.debug("Creating staging file: {}", file.getPath());

        return new FileChannelIOStaging(file);
    }

    @Override
    public void close() throws IOException {
        FileUtils.deleteDirectory(baseStagingDir);
    }

    //bean setters
    public void setBaseStagingDir(Directory baseStagingDir) {
        this.baseStagingDir = baseStagingDir.toFile();
    }
}