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

Introduction

Here is the source code for org.apache.accumulo.shell.commands.RevokeCommand.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.Map;
import java.util.Set;

import org.apache.accumulo.core.security.NamespacePermission;
import org.apache.accumulo.core.security.SystemPermission;
import org.apache.accumulo.core.security.TablePermission;
import org.apache.accumulo.core.util.BadArgumentException;
import org.apache.accumulo.shell.Shell;
import org.apache.accumulo.shell.Shell.Command;
import org.apache.accumulo.shell.ShellOptions;
import org.apache.accumulo.shell.Token;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.OptionGroup;
import org.apache.commons.cli.Options;

public class RevokeCommand extends TableOperation {
    {
        disableUnflaggedTableOptions();
    }

    private Option systemOpt, userOpt;
    private String user;
    private String[] permission;

    @Override
    public int execute(final String fullCommand, final CommandLine cl, final Shell shellState) throws Exception {
        user = cl.hasOption(userOpt.getOpt()) ? cl.getOptionValue(userOpt.getOpt())
                : shellState.getConnector().whoami();

        permission = cl.getArgs()[0].split("\\.", 2);
        if (cl.hasOption(systemOpt.getOpt()) && permission[0].equalsIgnoreCase("System")) {
            try {
                shellState.getConnector().securityOperations().revokeSystemPermission(user,
                        SystemPermission.valueOf(permission[1]));
                Shell.log.debug("Revoked from " + user + " the " + permission[1] + " permission");
            } catch (IllegalArgumentException e) {
                throw new BadArgumentException("No such system permission", fullCommand,
                        fullCommand.indexOf(cl.getArgs()[0]));
            }
        } else if (permission[0].equalsIgnoreCase("Table")) {
            super.execute(fullCommand, cl, shellState);
        } else if (permission[0].equalsIgnoreCase("Namespace")) {
            if (cl.hasOption(optNamespace.getOpt())) {
                try {
                    shellState.getConnector().securityOperations().revokeNamespacePermission(user,
                            cl.getOptionValue(optNamespace.getOpt()), NamespacePermission.valueOf(permission[1]));
                } catch (IllegalArgumentException e) {
                    throw new BadArgumentException("No such namespace permission", fullCommand,
                            fullCommand.indexOf(cl.getArgs()[0]));
                }
            } else {
                throw new BadArgumentException("No namespace specified to apply permission to", fullCommand,
                        fullCommand.indexOf(cl.getArgs()[0]));
            }
        } else {
            throw new BadArgumentException("Unrecognized permission", fullCommand,
                    fullCommand.indexOf(cl.getArgs()[0]));
        }
        return 0;
    }

    @Override
    protected void doTableOp(final Shell shellState, final String tableName) throws Exception {
        try {
            shellState.getConnector().securityOperations().revokeTablePermission(user, tableName,
                    TablePermission.valueOf(permission[1]));
            Shell.log.debug("Revoked from " + user + " the " + permission[1] + " permission on table " + tableName);
        } catch (IllegalArgumentException e) {
            throw new IllegalArgumentException("No such table permission", e);
        }
    }

    @Override
    public String description() {
        return "revokes system or table permissions from a user";
    }

    @Override
    public String usage() {
        return getName() + " <permission>";
    }

    @Override
    public void registerCompletion(final Token root, final Map<Command.CompletionSet, Set<String>> completionSet) {
        final Token cmd = new Token(getName());
        cmd.addSubcommand(new Token(TablePermission.printableValues()));
        cmd.addSubcommand(new Token(SystemPermission.printableValues()));
        cmd.addSubcommand(new Token(NamespacePermission.printableValues()));
        root.addSubcommand(cmd);
    }

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

        final OptionGroup group = new OptionGroup();

        systemOpt = new Option("s", "system", false, "revoke a system permission");

        optNamespace = new Option(ShellOptions.namespaceOption, "namespace", true,
                "name of a namespace to operate on");
        optNamespace.setArgName("namespace");

        group.addOption(systemOpt);
        group.addOption(optTableName);
        group.addOption(optTablePattern);
        group.addOption(optNamespace);

        o.addOptionGroup(group);
        userOpt = new Option(ShellOptions.userOption, "user", true, "user to operate on");
        userOpt.setArgName("username");
        userOpt.setRequired(true);
        o.addOption(userOpt);

        return o;
    }

    @Override
    public int numArgs() {
        return 1;
    }
}