com.senseidb.util.HDFSIndexCopier.java Source code

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Here is the source code for com.senseidb.util.HDFSIndexCopier.java

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package com.senseidb.util;
/**
 * 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.
 */

import java.net.URI;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.log4j.Logger;

import proj.zoie.api.IndexCopier;

public class HDFSIndexCopier implements IndexCopier {
    public static final Logger log = Logger.getLogger(HDFSIndexCopier.class);

    public boolean copy(String src, String dest) {
        try {
            URI srcUri = new URI(src), destUri = new URI(dest);

            Configuration config = new Configuration();
            config.set("fs.default.name", srcUri.resolve("/").toString());

            FileSystem dfs = FileSystem.get(config);
            Path destPath = new Path(destUri.toString());
            FileStatus[] files = dfs.listStatus(new Path(srcUri.toString()));
            if (files == null || files.length == 0)
                return false;

            for (FileStatus f : files) {
                log.info("Copying " + f.getPath().toString());
                dfs.copyToLocalFile(f.getPath(), destPath);
            }

            return true;
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            return false;
        }
    }
}