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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.
/**
* 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;
import org.apache.cassandra.schema.TableMetadata;
import org.apache.cassandra.schema.Schema;
import org.apache.cassandra.db.Directories;
import org.apache.cassandra.db.lifecycle.LifecycleTransaction;
import org.apache.cassandra.utils.OutputHandler;
import org.apache.commons.cli.*;
import java.io.File;
import java.io.IOException;
import java.util.function.BiPredicate;
import static org.apache.cassandra.tools.BulkLoader.CmdLineOptions;
public class StandaloneSSTableUtil
{
private static final String TOOL_NAME = "sstableutil";
private static final String TYPE_OPTION = "type";
private static final String OP_LOG_OPTION = "oplog";
private static final String VERBOSE_OPTION = "verbose";
private static final String DEBUG_OPTION = "debug";
private static final String HELP_OPTION = "help";
private static final String CLEANUP_OPTION = "cleanup";
public static void main(String args[])
{
Options options = Options.parseArgs(args);
try
{
// load keyspace descriptions.
Util.initDatabaseDescriptor();
Schema.instance.loadFromDisk(false);
TableMetadata metadata = Schema.instance.getTableMetadata(options.keyspaceName, options.cfName);
if (metadata == null)
throw new IllegalArgumentException(String.format("Unknown keyspace/table %s.%s",
options.keyspaceName,
options.cfName));
OutputHandler handler = new OutputHandler.SystemOutput(options.verbose, options.debug);
if (options.cleanup)
{
handler.output("Cleaning up...");
LifecycleTransaction.removeUnfinishedLeftovers(metadata);
}
else
{
handler.output("Listing files...");
listFiles(options, metadata, handler);
}
System.exit(0);
}
catch (Exception e)
{
System.err.println(e.getMessage());
if (options.debug)
e.printStackTrace(System.err);
System.exit(1);
}
}
private static void listFiles(Options options, TableMetadata metadata, OutputHandler handler) throws IOException
{
Directories directories = new Directories(metadata);
for (File dir : directories.getCFDirectories())
{
for (File file : LifecycleTransaction.getFiles(dir.toPath(), getFilter(options), Directories.OnTxnErr.THROW))
handler.output(file.getCanonicalPath());
}
}
private static BiPredicate getFilter(Options options)
{
return (file, type) ->
{
switch(type)
{
case FINAL:
return options.type != Options.FileType.TMP;
case TEMPORARY:
return options.type != Options.FileType.FINAL;
case TXN_LOG:
return options.oplogs;
default:
throw new AssertionError();
}
};
}
private static class Options
{
public enum FileType
{
ALL("all", "list all files, final or temporary"),
TMP("tmp", "list temporary files only"),
FINAL("final", "list final files only");
public String option;
public String descr;
FileType(String option, String descr)
{
this.option = option;
this.descr = descr;
}
static FileType fromOption(String option)
{
for (FileType fileType : FileType.values())
{
if (fileType.option.equals(option))
return fileType;
}
return FileType.ALL;
}
static String descr()
{
StringBuilder str = new StringBuilder();
for (FileType fileType : FileType.values())
{
str.append(fileType.option);
str.append(" (");
str.append(fileType.descr);
str.append("), ");
}
return str.toString();
}
}
public final String keyspaceName;
public final String cfName;
public boolean debug;
public boolean verbose;
public boolean oplogs;
public boolean cleanup;
public FileType type;
private Options(String keyspaceName, String cfName)
{
this.keyspaceName = keyspaceName;
this.cfName = cfName;
}
public static Options parseArgs(String cmdArgs[])
{
CommandLineParser parser = new GnuParser();
CmdLineOptions options = getCmdLineOptions();
try
{
CommandLine cmd = parser.parse(options, cmdArgs, false);
if (cmd.hasOption(HELP_OPTION))
{
printUsage(options);
System.exit(0);
}
String[] args = cmd.getArgs();
if (args.length != 2)
{
String msg = args.length < 2 ? "Missing arguments" : "Too many arguments";
System.err.println(msg);
printUsage(options);
System.exit(1);
}
String keyspaceName = args[0];
String cfName = args[1];
Options opts = new Options(keyspaceName, cfName);
opts.debug = cmd.hasOption(DEBUG_OPTION);
opts.verbose = cmd.hasOption(VERBOSE_OPTION);
opts.type = FileType.fromOption(cmd.getOptionValue(TYPE_OPTION));
opts.oplogs = cmd.hasOption(OP_LOG_OPTION);
opts.cleanup = cmd.hasOption(CLEANUP_OPTION);
return opts;
}
catch (ParseException e)
{
errorMsg(e.getMessage(), options);
return null;
}
}
private static void errorMsg(String msg, CmdLineOptions options)
{
System.err.println(msg);
printUsage(options);
System.exit(1);
}
private static CmdLineOptions getCmdLineOptions()
{
CmdLineOptions options = new CmdLineOptions();
options.addOption("c", CLEANUP_OPTION, "clean-up any outstanding transactions");
options.addOption("d", DEBUG_OPTION, "display stack traces");
options.addOption("h", HELP_OPTION, "display this help message");
options.addOption("o", OP_LOG_OPTION, "include operation logs");
options.addOption("t", TYPE_OPTION, true, FileType.descr());
options.addOption("v", VERBOSE_OPTION, "verbose output");
return options;
}
public static void printUsage(CmdLineOptions options)
{
String usage = String.format("%s [options] ", TOOL_NAME);
StringBuilder header = new StringBuilder();
header.append("--\n");
header.append("List sstable files for the provided table." );
header.append("\n--\n");
header.append("Options are:");
new HelpFormatter().printHelp(usage, header.toString(), options, "");
}
}
}