com.cloudera.sqoop.tool.CreateHiveTableTool.java Source code

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Here is the source code for com.cloudera.sqoop.tool.CreateHiveTableTool.java

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/**
 * Licensed to Cloudera, Inc. under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  Cloudera, Inc. 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.cloudera.sqoop.tool;

import java.io.IOException;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.util.StringUtils;

import com.cloudera.sqoop.Sqoop;
import com.cloudera.sqoop.SqoopOptions;
import com.cloudera.sqoop.SqoopOptions.InvalidOptionsException;
import com.cloudera.sqoop.cli.RelatedOptions;
import com.cloudera.sqoop.cli.ToolOptions;
import com.cloudera.sqoop.hive.HiveImport;

/**
 * Tool that creates a Hive table definition.
 */
public class CreateHiveTableTool extends BaseSqoopTool {

    public static final Log LOG = LogFactory.getLog(CreateHiveTableTool.class.getName());

    public CreateHiveTableTool() {
        super("create-hive-table");
    }

    @Override
    /** {@inheritDoc} */
    public int run(SqoopOptions options) {
        if (!init(options)) {
            return 1;
        }

        try {
            HiveImport hiveImport = new HiveImport(options, manager, options.getConf(), false);
            hiveImport.importTable(options.getTableName(), options.getHiveTableName(), true);
        } catch (IOException ioe) {
            LOG.error("Encountered IOException running create table job: " + StringUtils.stringifyException(ioe));
            if (System.getProperty(Sqoop.SQOOP_RETHROW_PROPERTY) != null) {
                throw new RuntimeException(ioe);
            } else {
                return 1;
            }
        } finally {
            destroy(options);
        }

        return 0;
    }

    @Override
    /** Configure the command-line arguments we expect to receive */
    public void configureOptions(ToolOptions toolOptions) {

        toolOptions.addUniqueOptions(getCommonOptions());

        RelatedOptions hiveOpts = getHiveOptions(false);
        hiveOpts.addOption(OptionBuilder.withArgName("table-name").hasArg()
                .withDescription("The db table to read the definition from").withLongOpt(TABLE_ARG).create());
        toolOptions.addUniqueOptions(hiveOpts);

        toolOptions.addUniqueOptions(getOutputFormatOptions());
    }

    @Override
    /** {@inheritDoc} */
    public void printHelp(ToolOptions toolOptions) {
        super.printHelp(toolOptions);
        System.out.println("");
        System.out.println("At minimum, you must specify --connect and --table");
    }

    @Override
    /** {@inheritDoc} */
    public void applyOptions(CommandLine in, SqoopOptions out) throws InvalidOptionsException {

        if (in.hasOption(TABLE_ARG)) {
            out.setTableName(in.getOptionValue(TABLE_ARG));
        }

        out.setHiveImport(true);

        applyCommonOptions(in, out);
        applyHiveOptions(in, out);
        applyOutputFormatOptions(in, out);
    }

    @Override
    /** {@inheritDoc} */
    public void validateOptions(SqoopOptions options) throws InvalidOptionsException {

        if (hasUnrecognizedArgs(extraArguments)) {
            throw new InvalidOptionsException(HELP_STR);
        }

        validateCommonOptions(options);
        validateOutputFormatOptions(options);
        validateHiveOptions(options);

        if (options.getTableName() == null) {
            throw new InvalidOptionsException("--table is required for table definition importing." + HELP_STR);
        }
    }
}