com.aliyun.fs.oss.utils.Utils.java Source code

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Here is the source code for com.aliyun.fs.oss.utils.Utils.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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.aliyun.fs.oss.utils;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.LocalDirAllocator;

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

public class Utils {
    static final Log LOG = LogFactory.getLog(Utils.class);
    static final String loginUser = System.getProperty("user.name");
    static final String BUFFER_DIR_KEY = "dfs.datanode.data.dir";
    static final LocalDirAllocator dirAlloc = new LocalDirAllocator(BUFFER_DIR_KEY);

    public static synchronized File getTempBufferDir(Configuration conf) throws IOException {
        File tmpFile = dirAlloc.createTmpFileForWrite("output-", LocalDirAllocator.SIZE_UNKNOWN, conf);
        String dir = tmpFile.toPath().getParent().toUri().getPath();
        LOG.debug("choose oss buffer dir: " + dir);
        return new File(dir, "data/" + loginUser + "/oss");
    }
}