org.apache.accumulo.shell.commands.AddSplitsCommand Maven / Gradle / Ivy

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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 org.apache.accumulo.shell.commands;

import java.util.TreeSet;

import org.apache.accumulo.core.client.TableNotFoundException;
import org.apache.accumulo.shell.Shell;
import org.apache.accumulo.shell.Shell.Command;
import org.apache.accumulo.shell.ShellUtil;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.MissingArgumentException;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.hadoop.io.Text;

public class AddSplitsCommand extends Command {
  private Option optSplitsFile, base64Opt;

  @Override
  public int execute(final String fullCommand, final CommandLine cl, final Shell shellState) throws Exception {
    final String tableName = OptUtil.getTableOpt(cl, shellState);
    final boolean decode = cl.hasOption(base64Opt.getOpt());

    final TreeSet splits = new TreeSet<>();

    if (cl.hasOption(optSplitsFile.getOpt())) {
      splits.addAll(ShellUtil.scanFile(cl.getOptionValue(optSplitsFile.getOpt()), decode));
    } else {
      if (cl.getArgList().isEmpty()) {
        throw new MissingArgumentException("No split points specified");
      }
      for (String s : cl.getArgs()) {
        splits.add(new Text(s.getBytes(Shell.CHARSET)));
      }
    }

    if (!shellState.getConnector().tableOperations().exists(tableName)) {
      throw new TableNotFoundException(null, tableName, null);
    }
    shellState.getConnector().tableOperations().addSplits(tableName, splits);

    return 0;
  }

  @Override
  public String description() {
    return "adds split points to an existing table";
  }

  @Override
  public Options getOptions() {
    final Options o = new Options();

    optSplitsFile = new Option("sf", "splits-file", true, "file with a newline-separated list of rows to split the table with");
    optSplitsFile.setArgName("filename");

    base64Opt = new Option("b64", "base64encoded", false, "decode encoded split points (splits file only)");

    o.addOption(OptUtil.tableOpt("name of the table to add split points to"));
    o.addOption(optSplitsFile);
    o.addOption(base64Opt);
    return o;
  }

  @Override
  public String usage() {
    return getName() + " [{ } ]";
  }

  @Override
  public int numArgs() {
    return Shell.NO_FIXED_ARG_LENGTH_CHECK;
  }
}