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

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Here is the source code for org.apache.accumulo.shell.commands.DeleteAuthsCommand.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.shell.commands;

import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.apache.accumulo.core.client.AccumuloException;
import org.apache.accumulo.core.client.AccumuloSecurityException;
import org.apache.accumulo.core.client.Connector;
import org.apache.accumulo.core.security.Authorizations;
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 DeleteAuthsCommand extends Command {
    private Option userOpt;
    private Option scanOptAuths;

    @Override
    public int execute(final String fullCommand, final CommandLine cl, final Shell shellState)
            throws AccumuloException, AccumuloSecurityException {
        final Connector connector = shellState.getConnector();
        final String user = cl.getOptionValue(userOpt.getOpt(), connector.whoami());
        final String scanOpts = cl.getOptionValue(scanOptAuths.getOpt());

        final Authorizations auths = connector.securityOperations().getUserAuthorizations(user);
        final StringBuilder userAuths = new StringBuilder();
        final String[] toBeRemovedAuths = scanOpts.split(",");
        final Set<String> toBeRemovedSet = new HashSet<String>();
        for (String auth : toBeRemovedAuths) {
            toBeRemovedSet.add(auth);
        }
        final String[] existingAuths = auths.toString().split(",");
        for (String auth : existingAuths) {
            if (!toBeRemovedSet.contains(auth)) {
                userAuths.append(auth);
                userAuths.append(",");
            }
        }
        if (userAuths.length() > 0) {
            connector.securityOperations().changeUserAuthorizations(user,
                    ScanCommand.parseAuthorizations(userAuths.substring(0, userAuths.length() - 1)));
        } else {
            connector.securityOperations().changeUserAuthorizations(user, new Authorizations());
        }

        Shell.log.debug("Changed record-level authorizations for user " + user);
        return 0;
    }

    @Override
    public String description() {
        return "remove authorizations from the maximum scan authorizations for a user";
    }

    @Override
    public void registerCompletion(final Token root, final Map<Command.CompletionSet, Set<String>> completionSet) {
        registerCompletionForUsers(root, completionSet);
    }

    @Override
    public Options getOptions() {
        final Options o = new Options();
        final OptionGroup setOrClear = new OptionGroup();
        scanOptAuths = new Option("s", "scan-authorizations", true, "scan authorizations to remove");
        scanOptAuths.setArgName("comma-separated-authorizations");
        setOrClear.addOption(scanOptAuths);
        setOrClear.setRequired(true);
        o.addOptionGroup(setOrClear);
        userOpt = new Option(ShellOptions.userOption, "user", true, "user to operate on");
        userOpt.setArgName("user");
        o.addOption(userOpt);
        return o;
    }

    @Override
    public int numArgs() {
        return 0;
    }
}