Package org.apache.hadoop.fs.viewfs

Class ConfigUtil

java.lang.Object

org.apache.hadoop.fs.viewfs.ConfigUtil

public class ConfigUtil
extends java.lang.Object

Utilities for config variables of the viewFs See ViewFs

Constructor Summary

Constructors

Constructor	Description
ConfigUtil()

Method Summary

Modifier and Type	Method	Description
static void	addLink(Configuration conf, java.lang.String mountTableName, java.lang.String src, java.net.URI target)	Add a link to the config for the specified mount table
static void	addLink(Configuration conf, java.lang.String src, java.net.URI target)	Add a link to the config for the default mount table
static void	addLinkFallback(Configuration conf, java.lang.String mountTableName, java.net.URI target)	Add a LinkFallback to the config for the specified mount table.
static void	addLinkFallback(Configuration conf, java.net.URI target)	Add a LinkFallback to the config for the default mount table.
static void	addLinkMerge(Configuration conf, java.lang.String mountTableName, java.net.URI[] targets)	Add a LinkMerge to the config for the specified mount table.
static void	addLinkMerge(Configuration conf, java.net.URI[] targets)	Add a LinkMerge to the config for the default mount table.
static void	addLinkMergeSlash(Configuration conf, java.lang.String mountTableName, java.net.URI target)	Add a LinkMergeSlash to the config for the specified mount table.
static void	addLinkMergeSlash(Configuration conf, java.net.URI target)	Add a LinkMergeSlash to the config for the default mount table.
static void	addLinkNfly(Configuration conf, java.lang.String mountTableName, java.lang.String src, java.lang.String settings, java.lang.String targets)	Add nfly link to configuration for the given mount table.
static void	addLinkNfly(Configuration conf, java.lang.String mountTableName, java.lang.String src, java.lang.String settings, java.net.URI... targets)	Add nfly link to configuration for the given mount table.
static void	addLinkNfly(Configuration conf, java.lang.String src, java.net.URI... targets)
static void	addLinkRegex(Configuration conf, java.lang.String mountTableName, java.lang.String srcRegex, java.lang.String targetStr, java.lang.String interceptorSettings)	Add a LinkRegex to the config for the specified mount table.
static java.lang.String	getConfigViewFsPrefix()	Get the config variable prefix for the default mount table
static java.lang.String	getConfigViewFsPrefix(java.lang.String mountTableName)	Get the config variable prefix for the specified mount table
static java.lang.String	getDefaultMountTableName(Configuration conf)	Get the name of the default mount table to use.
static java.lang.String	getHomeDirValue(Configuration conf)	Get the value of the home dir conf value for default mount table
static java.lang.String	getHomeDirValue(Configuration conf, java.lang.String mountTableName)	Get the value of the home dir conf value for specified mount table
static boolean	isNestedMountPointSupported(Configuration conf)	Check the bool config whether nested mount point is supported.
static void	setHomeDirConf(Configuration conf, java.lang.String homedir)	Add config variable for homedir for default mount table
static void	setHomeDirConf(Configuration conf, java.lang.String mountTableName, java.lang.String homedir)	Add config variable for homedir the specified mount table
static void	setIsNestedMountPointSupported(Configuration conf, boolean isNestedMountPointSupported)	Set the bool value isNestedMountPointSupported in config.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConfigUtil

public ConfigUtil()

Method Detail

getConfigViewFsPrefix

public static java.lang.String getConfigViewFsPrefix(java.lang.String mountTableName)

Get the config variable prefix for the specified mount table

Parameters:

mountTableName - - the name of the mount table

Returns:

the config variable prefix for the specified mount table

getConfigViewFsPrefix

public static java.lang.String getConfigViewFsPrefix()

Get the config variable prefix for the default mount table

Returns:

the config variable prefix for the default mount table

addLink

public static void addLink(Configuration conf,
                           java.lang.String mountTableName,
                           java.lang.String src,
                           java.net.URI target)

Add a link to the config for the specified mount table

Parameters:

conf - - add the link to this conf

mountTableName - mountTable.

src - - the src path name

target - - the target URI link

addLink

public static void addLink(Configuration conf,
                           java.lang.String src,
                           java.net.URI target)

Add a link to the config for the default mount table

Parameters:

conf - - add the link to this conf

src - - the src path name

target - - the target URI link

addLinkMergeSlash

public static void addLinkMergeSlash(Configuration conf,
                                     java.lang.String mountTableName,
                                     java.net.URI target)

Add a LinkMergeSlash to the config for the specified mount table.

Parameters:

conf - configuration.

mountTableName - mountTable.

target - target.

addLinkMergeSlash

public static void addLinkMergeSlash(Configuration conf,
                                     java.net.URI target)

Add a LinkMergeSlash to the config for the default mount table.

Parameters:

conf - configuration.

target - targets.

addLinkFallback

public static void addLinkFallback(Configuration conf,
                                   java.lang.String mountTableName,
                                   java.net.URI target)

Add a LinkFallback to the config for the specified mount table.

Parameters:

conf - configuration.

mountTableName - mountTable.

target - targets.

addLinkFallback

public static void addLinkFallback(Configuration conf,
                                   java.net.URI target)

Add a LinkFallback to the config for the default mount table.

Parameters:

conf - configuration.

target - targets.

addLinkMerge

public static void addLinkMerge(Configuration conf,
                                java.lang.String mountTableName,
                                java.net.URI[] targets)

Add a LinkMerge to the config for the specified mount table.

Parameters:

conf - configuration.

mountTableName - mountTable.

targets - targets.

addLinkMerge

public static void addLinkMerge(Configuration conf,
                                java.net.URI[] targets)

Add a LinkMerge to the config for the default mount table.

Parameters:

conf - configuration.

targets - targets array.

addLinkNfly

public static void addLinkNfly(Configuration conf,
                               java.lang.String mountTableName,
                               java.lang.String src,
                               java.lang.String settings,
                               java.lang.String targets)

Add nfly link to configuration for the given mount table.

Parameters:

conf - configuration.

mountTableName - mount table.

src - src.

settings - settings.

targets - targets.

addLinkNfly

public static void addLinkNfly(Configuration conf,
                               java.lang.String mountTableName,
                               java.lang.String src,
                               java.lang.String settings,
                               java.net.URI... targets)

Add nfly link to configuration for the given mount table.

Parameters:

conf - configuration.

mountTableName - mount table.

src - src.

settings - settings.

targets - targets.

addLinkNfly

public static void addLinkNfly(Configuration conf,
                               java.lang.String src,
                               java.net.URI... targets)

addLinkRegex

public static void addLinkRegex(Configuration conf,
                                java.lang.String mountTableName,
                                java.lang.String srcRegex,
                                java.lang.String targetStr,
                                java.lang.String interceptorSettings)

Add a LinkRegex to the config for the specified mount table.

Parameters:

conf - - get mountable config from this conf

mountTableName - - the mountable name of the regex config item

srcRegex - - the src path regex expression that applies to this config

targetStr - - the string of target path

interceptorSettings - - the serialized interceptor string to be applied while resolving the mapping

setHomeDirConf

public static void setHomeDirConf(Configuration conf,
                                  java.lang.String homedir)

Add config variable for homedir for default mount table

Parameters:

conf - - add to this conf

homedir - - the home dir path starting with slash

setHomeDirConf

public static void setHomeDirConf(Configuration conf,
                                  java.lang.String mountTableName,
                                  java.lang.String homedir)

Add config variable for homedir the specified mount table

Parameters:

conf - - add to this conf

homedir - - the home dir path starting with slash

mountTableName - - the mount table.

getHomeDirValue

public static java.lang.String getHomeDirValue(Configuration conf)

Get the value of the home dir conf value for default mount table

Parameters:

conf - - from this conf

Returns:

home dir value, null if variable is not in conf

getHomeDirValue

public static java.lang.String getHomeDirValue(Configuration conf,
                                               java.lang.String mountTableName)

Get the value of the home dir conf value for specified mount table

Parameters:

conf - - from this conf

mountTableName - - the mount table

Returns:

home dir value, null if variable is not in conf

getDefaultMountTableName

public static java.lang.String getDefaultMountTableName(Configuration conf)

Get the name of the default mount table to use. If Constants.CONFIG_VIEWFS_DEFAULT_MOUNT_TABLE_NAME_KEY is specified, it's value is returned. Otherwise, Constants.CONFIG_VIEWFS_DEFAULT_MOUNT_TABLE is returned.

Parameters:

conf - Configuration to use.

Returns:

the name of the default mount table to use.

isNestedMountPointSupported

public static boolean isNestedMountPointSupported(Configuration conf)

Check the bool config whether nested mount point is supported. Default: true

Parameters:

conf - - from this conf

Returns:

whether nested mount point is supported

setIsNestedMountPointSupported

public static void setIsNestedMountPointSupported(Configuration conf,
                                                  boolean isNestedMountPointSupported)

Set the bool value isNestedMountPointSupported in config.

Parameters:

conf - - from this conf

isNestedMountPointSupported - - whether nested mount point is supported