org.apache.accumulo.shell.commands.AddSplitsCommand.java Source code

Introduction

Here is the source code for org.apache.accumulo.shell.commands.AddSplitsCommand.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.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<Text> splits = new TreeSet<Text>();

        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() + " [<split>{ <split>} ]";
    }

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