org.apache.sqoop.connector.hdfs.HdfsToDestroyer.java Source code

Introduction

Here is the source code for org.apache.sqoop.connector.hdfs.HdfsToDestroyer.java

Source

/**
 * 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.sqoop.connector.hdfs;

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 org.apache.sqoop.common.SqoopException;
import org.apache.sqoop.connector.hdfs.configuration.LinkConfiguration;
import org.apache.sqoop.connector.hdfs.configuration.ToJobConfiguration;
import org.apache.sqoop.error.code.HdfsConnectorError;
import org.apache.sqoop.job.etl.Destroyer;
import org.apache.sqoop.job.etl.DestroyerContext;

import java.io.IOException;

public class HdfsToDestroyer extends Destroyer<LinkConfiguration, ToJobConfiguration> {

    private static final Logger LOG = Logger.getLogger(HdfsToDestroyer.class);

    /**
     * {@inheritDoc}
     */
    @Override
    public void destroy(DestroyerContext context, LinkConfiguration linkConfig, ToJobConfiguration jobConfig) {
        Configuration configuration = new Configuration();
        HdfsUtils.contextToConfiguration(context.getContext(), configuration);

        String workingDirectory = context.getString(HdfsConstants.WORK_DIRECTORY);
        Path targetDirectory = new Path(jobConfig.toJobConfig.outputDirectory);

        try {
            FileSystem fs = FileSystem.get(configuration);

            // If we succeeded, we need to move all files from working directory
            if (context.isSuccess()) {
                FileStatus[] fileStatuses = fs.listStatus(new Path(workingDirectory));
                for (FileStatus status : fileStatuses) {
                    LOG.info("Committing file: " + status.getPath().toString() + " of size " + status.getLen());
                    fs.rename(status.getPath(), new Path(targetDirectory, status.getPath().getName()));
                }
            }

            // Clean up working directory
            fs.delete(new Path(workingDirectory), true);
        } catch (IOException e) {
            throw new SqoopException(HdfsConnectorError.GENERIC_HDFS_CONNECTOR_0008, e);
        }
    }
}