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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.

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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.cassandra.tools.nodetool;

import io.airlift.airline.Arguments;
import io.airlift.airline.Command;
import io.airlift.airline.Option;

import java.io.PrintStream;
import java.util.ArrayList;
import java.util.List;

import org.apache.cassandra.tools.NodeProbe;
import org.apache.cassandra.tools.NodeTool.NodeToolCmd;

@Command(name = "verify", description = "Verify (check data checksum for) one or more tables")
public class Verify extends NodeToolCmd
{
    @Arguments(usage = "[ ...]", description = "The keyspace followed by one or many tables")
    private List args = new ArrayList<>();

    @Option(title = "extended_verify",
            name = {"-e", "--extended-verify"},
            description = "Verify each cell data, beyond simply checking sstable checksums")
    private boolean extendedVerify = false;

    @Option(title = "check_version",
            name = {"-c", "--check-version"},
            description = "Also check that all sstables are the latest version")
    private boolean checkVersion = false;

    @Option(title = "override-disable",
    name = {"-f", "--force"},
    description = "Override disabling of verify tool - see CASSANDRA-9947 for caveats")
    private boolean overrideDisable = false;

    @Option(title = "dfp",
            name = {"-d", "--dfp"},
            description = "Invoke the disk failure policy if a corrupt sstable is found")
    private boolean diskFailurePolicy = false;

    @Option(title = "repair_status_change",
            name = {"-r", "--rsc"},
            description = "Mutate the repair status on corrupt sstables")
    private boolean mutateRepairStatus = false;

    @Option(title = "check_owns_tokens",
            name = {"-t", "--check-tokens"},
            description = "Verify that all tokens in sstables are owned by this node")
    private boolean checkOwnsTokens = false;

    @Option(title = "quick",
    name = {"-q", "--quick"},
    description = "Do a quick check - avoid reading all data to verify checksums")
    private boolean quick = false;

    @Override
    public void execute(NodeProbe probe)
    {
        PrintStream out = probe.output().out;
        if (!overrideDisable)
        {
            out.println("verify is disabled unless a [-f|--force] override flag is provided. See CASSANDRA-9947 and CASSANDRA-17017 for details.");
            System.exit(1);
        }

        List keyspaces = parseOptionalKeyspace(args, probe);
        String[] tableNames = parseOptionalTables(args);

        if (checkOwnsTokens && !extendedVerify)
        {
            out.println("Token verification requires --extended-verify");
            // if System.exit gets removed, make sure to update org.apache.cassandra.distributed.test.NodeToolTest.testNodetoolSystemExit
            System.exit(1);
        }

        for (String keyspace : keyspaces)
        {
            try
            {
                probe.verify(out, extendedVerify, checkVersion, diskFailurePolicy, mutateRepairStatus, checkOwnsTokens, quick, keyspace, tableNames);
            } catch (Exception e)
            {
                throw new RuntimeException("Error occurred during verifying", e);
            }
        }
    }
}