org.apache.hadoop.hbase.util

Class AbstractHBaseTool

java.lang.Object

org.apache.hadoop.hbase.util.AbstractHBaseTool

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

@InterfaceAudience.Private
public abstract class AbstractHBaseTool
extends Object
implements org.apache.hadoop.util.Tool

Common base class used for HBase command-line tools. Simplifies workflow and command-line argument parsing.

Field Summary

Fields

Modifier and Type	Field and Description
protected String[]	cmdLineArgs
protected org.apache.hadoop.conf.Configuration	conf
protected static int	EXIT_FAILURE
protected static int	EXIT_SUCCESS

Constructor Summary

Constructors

Constructor and Description
AbstractHBaseTool()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	addOption(org.apache.commons.cli.Option option)
protected abstract void	addOptions() Override this to add command-line options using addOptWithArg(java.lang.String, java.lang.String) and similar methods.
protected void	addOptNoArg(String opt, String description)
protected void	addOptNoArg(String shortOpt, String longOpt, String description)
protected void	addOptWithArg(String opt, String description)
protected void	addOptWithArg(String shortOpt, String longOpt, String description)
protected void	addRequiredOptWithArg(String opt, String description)
protected void	addRequiredOptWithArg(String shortOpt, String longOpt, String description)
protected void	doStaticMain(String[] args) Call this from the concrete tool class's main function.
protected abstract int	doWork() The "main function" of the tool
org.apache.hadoop.conf.Configuration	getConf()
double	getOptionAsDouble(org.apache.commons.cli.CommandLine cmd, String opt, double defaultValue)
int	getOptionAsInt(org.apache.commons.cli.CommandLine cmd, String opt, int defaultValue)
static int	parseInt(String s, int minValue, int maxValue)
static long	parseLong(String s, long minValue, long maxValue) Parse a number and enforce a range.
protected void	printUsage()
protected void	printUsage(String usageStr, String usageHeader, String usageFooter)
protected abstract void	processOptions(org.apache.commons.cli.CommandLine cmd) This method is called to process the options after they have been parsed.
int	run(String[] args)
void	setConf(org.apache.hadoop.conf.Configuration conf)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EXIT_SUCCESS

protected static final int EXIT_SUCCESS

See Also:

Constant Field Values

EXIT_FAILURE

protected static final int EXIT_FAILURE

See Also:

Constant Field Values

conf

protected org.apache.hadoop.conf.Configuration conf

cmdLineArgs

protected String[] cmdLineArgs

Constructor Detail

AbstractHBaseTool

public AbstractHBaseTool()

Method Detail

addOptions

protected abstract void addOptions()

Override this to add command-line options using addOptWithArg(java.lang.String, java.lang.String) and similar methods.

processOptions

protected abstract void processOptions(org.apache.commons.cli.CommandLine cmd)

This method is called to process the options after they have been parsed.

doWork

protected abstract int doWork()
                       throws Exception

The "main function" of the tool

Throws:

Exception

getConf

public org.apache.hadoop.conf.Configuration getConf()

Specified by:

getConf in interface org.apache.hadoop.conf.Configurable

setConf

public void setConf(org.apache.hadoop.conf.Configuration conf)

Specified by:

setConf in interface org.apache.hadoop.conf.Configurable

run

public final int run(String[] args)
              throws IOException

Specified by:

run in interface org.apache.hadoop.util.Tool

Throws:

IOException

printUsage

protected void printUsage()

printUsage

protected void printUsage(String usageStr,
              String usageHeader,
              String usageFooter)

addOption

protected void addOption(org.apache.commons.cli.Option option)

addRequiredOptWithArg

protected void addRequiredOptWithArg(String opt,
                         String description)

addRequiredOptWithArg

protected void addRequiredOptWithArg(String shortOpt,
                         String longOpt,
                         String description)

addOptNoArg

protected void addOptNoArg(String opt,
               String description)

addOptNoArg

protected void addOptNoArg(String shortOpt,
               String longOpt,
               String description)

addOptWithArg

protected void addOptWithArg(String opt,
                 String description)

addOptWithArg

protected void addOptWithArg(String shortOpt,
                 String longOpt,
                 String description)

getOptionAsInt

public int getOptionAsInt(org.apache.commons.cli.CommandLine cmd,
                 String opt,
                 int defaultValue)

getOptionAsDouble

public double getOptionAsDouble(org.apache.commons.cli.CommandLine cmd,
                       String opt,
                       double defaultValue)

parseLong

public static long parseLong(String s,
             long minValue,
             long maxValue)

Parse a number and enforce a range.

parseInt

public static int parseInt(String s,
           int minValue,
           int maxValue)

doStaticMain

protected void doStaticMain(String[] args)

Call this from the concrete tool class's main function.