org.apache.accumulo.server.util.Admin.java Source code

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Here is the source code for org.apache.accumulo.server.util.Admin.java

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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.server.util;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;

import jline.ConsoleReader;

import org.apache.accumulo.core.client.AccumuloException;
import org.apache.accumulo.core.client.AccumuloSecurityException;
import org.apache.accumulo.core.client.impl.ClientExec;
import org.apache.accumulo.core.client.impl.MasterClient;
import org.apache.accumulo.core.conf.Property;
import org.apache.accumulo.core.master.thrift.MasterClientService;
import org.apache.accumulo.core.security.thrift.AuthInfo;
import org.apache.accumulo.server.client.HdfsZooInstance;
import org.apache.accumulo.server.security.SecurityConstants;
import org.apache.commons.cli.BasicParser;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.log4j.Logger;

public class Admin {
    private static final Logger log = Logger.getLogger(Admin.class);

    public static void main(String[] args) {
        boolean everything;

        CommandLine cl = null;
        Options opts = new Options();
        opts.addOption("u", true, "optional administrator user name");
        opts.addOption("p", true, "optional administrator password");
        opts.addOption("f", "force", false, "force the given server to stop by removing its lock");
        opts.addOption("?", "help", false, "displays the help");
        String user = null;
        byte[] pass = null;
        boolean force = false;

        try {
            cl = new BasicParser().parse(opts, args);
            if (cl.hasOption("?"))
                throw new ParseException("help requested");
            args = cl.getArgs();

            user = cl.hasOption("u") ? cl.getOptionValue("u") : "root";
            pass = cl.hasOption("p") ? cl.getOptionValue("p").getBytes() : null;
            force = cl.hasOption("f");

            if (!((cl.getArgs().length == 1
                    && (args[0].equalsIgnoreCase("stopMaster") || args[0].equalsIgnoreCase("stopAll")))
                    || (cl.getArgs().length == 2 && args[0].equalsIgnoreCase("stop"))))
                throw new ParseException("Incorrect arguments");

        } catch (ParseException e) {
            // print to the log and to stderr
            if (cl == null || !cl.hasOption("?"))
                log.error(e, e);
            HelpFormatter h = new HelpFormatter();
            StringWriter str = new StringWriter();
            h.printHelp(new PrintWriter(str), h.getWidth(),
                    Admin.class.getName() + " stopMaster | stopAll | stop <tserver>", null, opts,
                    h.getLeftPadding(), h.getDescPadding(), null, true);
            if (cl != null && cl.hasOption("?"))
                log.info(str.toString());
            else
                log.error(str.toString());
            h.printHelp(new PrintWriter(System.err), h.getWidth(),
                    Admin.class.getName() + " stopMaster | stopAll | stop <tserver>", null, opts,
                    h.getLeftPadding(), h.getDescPadding(), null, true);
            System.exit(3);
        }

        try {
            AuthInfo creds;
            if (args[0].equalsIgnoreCase("stop")) {
                stopTabletServer(args[1], force);
            } else {
                if (!cl.hasOption("u") && !cl.hasOption("p")) {
                    creds = SecurityConstants.getSystemCredentials();
                } else {
                    if (pass == null) {
                        try {
                            pass = new ConsoleReader().readLine("Enter current password for '" + user + "': ", '*')
                                    .getBytes();
                        } catch (IOException ioe) {
                            log.error("Password not specified and unable to prompt: " + ioe);
                            System.exit(4);
                        }
                    }
                    creds = new AuthInfo(user, ByteBuffer.wrap(pass),
                            HdfsZooInstance.getInstance().getInstanceID());
                }

                everything = args[0].equalsIgnoreCase("stopAll");
                stopServer(creds, everything);
            }
        } catch (AccumuloException e) {
            log.error(e);
            System.exit(1);
        } catch (AccumuloSecurityException e) {
            log.error(e);
            System.exit(2);
        }
    }

    private static void stopServer(final AuthInfo credentials, final boolean tabletServersToo)
            throws AccumuloException, AccumuloSecurityException {
        MasterClient.execute(HdfsZooInstance.getInstance(), new ClientExec<MasterClientService.Iface>() {
            @Override
            public void execute(MasterClientService.Iface client) throws Exception {
                client.shutdown(null, credentials, tabletServersToo);
            }
        });
    }

    private static void stopTabletServer(String server, final boolean force)
            throws AccumuloException, AccumuloSecurityException {
        InetSocketAddress address = AddressUtil.parseAddress(server, Property.TSERV_CLIENTPORT);
        final String finalServer = org.apache.accumulo.core.util.AddressUtil.toString(address);
        MasterClient.execute(HdfsZooInstance.getInstance(), new ClientExec<MasterClientService.Iface>() {
            @Override
            public void execute(MasterClientService.Iface client) throws Exception {
                client.shutdownTabletServer(null, SecurityConstants.getSystemCredentials(), finalServer, force);
            }
        });
    }
}