edu.isi.pegasus.planner.client

Class RCClient

java.lang.Object

org.griphyn.vdl.toolkit.Toolkit

edu.isi.pegasus.planner.client.RCClient

public class RCClient
extends org.griphyn.vdl.toolkit.Toolkit

This class interfaces the with the replica catalog API to delve into the underlying true catalog without knowing (once instantiated) which one it is.

Version:

$Revision$

Author:

Jens-S. V??ckler, Yong Zhao

See Also:

edu.isi.pegasus.planner.catalog.replica.ReplicaCatalog, ReplicaCatalogEntry, JDBCRC

Field Summary

Fields

Modifier and Type	Field and Description
private static int	DEFAULT_CHUNK_FACTOR The default chunk factor that is used for biting off chunks of large files.
private static String	LFN_DOES_NOT_EXIST_MSG The message for LFN's not found.
private boolean	m_batch Indication of batch mode.
private int	m_chunk_factor The number of lines that are to be parsed for chunking up large input files.
private String	m_conf_property_file Reference to the property file passed using the --conf option
private org.apache.log4j.Logger	m_log Our own logger.
protected PegasusProperties	m_pegasus_props The object holding all the properties pertaining to Pegasus.
private Map	m_prefs Maintains instance-local settings on user preferences.
private ReplicaCatalog	m_rc Maintains the interface to the replica catalog implementation.
private LogManager	m_rls_logger Logger for RLS implementation for the time being.
private static org.apache.log4j.Logger	m_root Keeps track of log4j's root logger as singleton.
private int	m_total_lines_succ_worked The total number of lines on which the client has successfully worked on till yet.
private int	m_total_lines_worked The total number of lines on which the client has worked on till yet.

Fields inherited from class org.griphyn.vdl.toolkit.Toolkit

m_application, m_home, m_logger, m_props, m_verbosity

Constructor Summary

Constructors

Constructor and Description
RCClient(String appName) ctor: Constructs a new instance of the commandline interface to replica catalogs.

Method Summary

Methods

Modifier and Type	Method and Description
(package private) void	close() Frees resources taken by the instance of the replica catalog.
(package private) void	connect(PegasusProperties properties) Connects the interface with the replica catalog implementation.
private void	determineChunkFactor() Sets the chunk factor for chunking up large input files.
private void	doSet(org.apache.log4j.Level level)
Object	enter(String key, String value) Adds a preference to the instance preferences settings.
private String	escape(String s) Escapes quotes and backslashes by backslashing them.
protected gnu.getopt.LongOpt[]	generateValidOptions() Creates a set of GNU long options.
private void	initialize(String[] opts, char confChar) Initialize the RCClient object
private void	lfnDoesNotExist(String lfn) Writes out a message about LFN not existing.
static void	log(org.apache.log4j.Level level, String msg) Logs messages from main() method.
private String	lookupConfProperty(String[] opts, char confChar) Looks up for the conf property in the command line arguments passed to the RCClient
static void	main(String[] args) Manipulate entries in a given replica catalog implementation.
private String	noquote(String s) Removes a pair of outer quotes, which are optional.
void	parse(String filename) Consumes commands that control the replica management.
void	parse(String filename, String command) Consumes commands that control the replica management.
void	setLevel(int level) Sets a logging level.
private void	show(String lfn, ReplicaCatalogEntry rce) Preliminary implementation of output method.
void	showHelp() Prints internal command help.
void	showUsage() Prints the usage string on stdout.
private String	unescape(String s) Unescapes previously backslashed characters.
int	work(List words) Works on the command contained within one line.
int	work(List lines, String command) Works on the command contained within chunk of lines.

Methods inherited from class org.griphyn.vdl.toolkit.Toolkit

getVerbosity, increaseVerbosity, readFile, setVerbosity

Methods inherited from class java.lang.Object

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

Field Detail

LFN_DOES_NOT_EXIST_MSG

private static final String LFN_DOES_NOT_EXIST_MSG

The message for LFN's not found.

See Also:

Constant Field Values

DEFAULT_CHUNK_FACTOR

private static final int DEFAULT_CHUNK_FACTOR

The default chunk factor that is used for biting off chunks of large files.

See Also:

Constant Field Values

m_rc

private ReplicaCatalog m_rc

Maintains the interface to the replica catalog implementation.

m_prefs

private Map m_prefs

Maintains instance-local settings on user preferences.

m_root

private static org.apache.log4j.Logger m_root

Keeps track of log4j's root logger as singleton.

m_rls_logger

private LogManager m_rls_logger

Logger for RLS implementation for the time being.

m_chunk_factor

private int m_chunk_factor

The number of lines that are to be parsed for chunking up large input files.

m_total_lines_worked

private int m_total_lines_worked

The total number of lines on which the client has worked on till yet.

m_total_lines_succ_worked

private int m_total_lines_succ_worked

The total number of lines on which the client has successfully worked on till yet.

m_batch

private boolean m_batch

Indication of batch mode.

m_pegasus_props

protected PegasusProperties m_pegasus_props

The object holding all the properties pertaining to Pegasus.

m_conf_property_file

private String m_conf_property_file

Reference to the property file passed using the --conf option

m_log

private org.apache.log4j.Logger m_log

Our own logger.

Constructor Detail

RCClient

public RCClient(String appName)

ctor: Constructs a new instance of the commandline interface to replica catalogs.

Parameters:

appName - is the name of to print in usage records.

Method Detail

setLevel

public void setLevel(int level)

Sets a logging level.

Parameters:

level - is the new level to achieve.

log

public static void log(org.apache.log4j.Level level,
       String msg)

Logs messages from main() method.

Parameters:

level - is the log4j level to generate the log message for

msg - is the message itself.

See Also:

Category.log(Priority, Object )

doSet

private void doSet(org.apache.log4j.Level level)

enter

public Object enter(String key,
           String value)

Adds a preference to the instance preferences settings.

Parameters:

key - is a key into the preference map.

value - is the new value to add.

Returns:

the previous value, or null if no such value exists.

initialize

private void initialize(String[] opts,
              char confChar)

Initialize the RCClient object

Parameters:

opts - the command line argument passed by the user

confChar - the short option corresponding the conf property.

showUsage

public void showUsage()

Prints the usage string on stdout.

Specified by:

showUsage in class org.griphyn.vdl.toolkit.Toolkit

generateValidOptions

protected gnu.getopt.LongOpt[] generateValidOptions()

Creates a set of GNU long options.

Returns:

an initialized array with the options

connect

void connect(PegasusProperties properties)
       throws ClassNotFoundException,
              IOException,
              NoSuchMethodException,
              InstantiationException,
              IllegalAccessException,
              InvocationTargetException,
              MissingResourceException

Connects the interface with the replica catalog implementation. The choice of backend is configured through properties.

Throws:

ClassNotFoundException - if the schema for the database cannot be loaded. You might want to check your CLASSPATH, too.

NoSuchMethodException - if the schema's constructor interface does not comply with the database driver API.

InstantiationException - if the schema class is an abstract class instead of a concrete implementation.

IllegalAccessException - if the constructor for the schema class it not publicly accessible to this package.

InvocationTargetException - if the constructor of the schema throws an exception while being dynamically loaded.

IOException

MissingResourceException

See Also:

ChimeraProperties

close

void close()

Frees resources taken by the instance of the replica catalog. This method is safe to be called on failed or already closed catalogs.

escape

private String escape(String s)

Escapes quotes and backslashes by backslashing them. Identity s == unescape(escape(s)) is preserved.

Parameters:

s - is the string to escape

Returns:

a string with escaped special characters.

See Also:

unescape(String )

unescape

private String unescape(String s)

Unescapes previously backslashed characters. Identity s == unescape(escape(s)) is preserved.

Parameters:

s - is the string to escape

Returns:

a string with unescaped special characters.

See Also:

escape(String )

noquote

private String noquote(String s)

Removes a pair of outer quotes, which are optional.

Parameters:

s - is a string which may start and end in quotes

Returns:

a string without the optional quotes, or the string itself.

lfnDoesNotExist

private void lfnDoesNotExist(String lfn)

Writes out a message about LFN not existing.

Parameters:

lfn - the lfn.

show

private void show(String lfn,
        ReplicaCatalogEntry rce)

Preliminary implementation of output method.

Parameters:

lfn - is the logical filename to show

rce - is the replica catalog entry to show. It contains at minimum the physical filename, and may contain any number of key-value pairs.

showHelp

public void showHelp()

Prints internal command help.

work

public int work(List lines,
       String command)

Works on the command contained within chunk of lines.

Parameters:

lines - is a list of lines with each line being a list of words that is split appropriately

command - the command to be invoked.

Returns:

number of entries affected, or -1 to stop processing.

work

public int work(List words)

Works on the command contained within one line.

Parameters:

words - is a list of the arguments, split appropriately

Returns:

number of entries affected, or -1 to stop processing.

parse

public void parse(String filename)
           throws IOException

Consumes commands that control the replica management.

Parameters:

filename - is the file to read from. If null, use stdin.

Throws:

IOException

parse

public void parse(String filename,
         String command)
           throws IOException

Consumes commands that control the replica management.

Parameters:

filename - is the file to read from.

command - is the command that needs to be applied to the file contents

Throws:

IOException

lookupConfProperty

private String lookupConfProperty(String[] opts,
                        char confChar)

Looks up for the conf property in the command line arguments passed to the RCClient

Parameters:

opts - command line arguments

confChar - short char corresponding to the conf property

Returns:

path to the property file

main

public static void main(String[] args)

Manipulate entries in a given replica catalog implementation.

Parameters:

args - are the commandline arguments.

determineChunkFactor

private void determineChunkFactor()

Sets the chunk factor for chunking up large input files.