Package org.jclouds.compute.internal

Class FormatSharedNamesAndAppendUniqueStringToThoseWhichRepeat

java.lang.Object

org.jclouds.compute.internal.FormatSharedNamesAndAppendUniqueStringToThoseWhichRepeat

All Implemented Interfaces:

GroupNamingConvention

public class FormatSharedNamesAndAppendUniqueStringToThoseWhichRepeat
extends Object
implements GroupNamingConvention

Get a name using a random mechanism that still ties all nodes in a group together. This implementation will pass the group and a hex formatted random number to the configured naming convention.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FormatSharedNamesAndAppendUniqueStringToThoseWhichRepeat.Factory

Field Summary

Fields

Modifier and Type	Field	Description
protected char	delimiter
protected Validator<String>	groupValidator
protected String	prefix
protected String	sharedFormat
protected Pattern	sharedGroupPattern
protected com.google.common.base.Supplier<String>	suffixSupplier
protected String	uniqueFormat
protected Pattern	uniqueGroupPattern

Constructor Summary

Constructors

Constructor	Description
FormatSharedNamesAndAppendUniqueStringToThoseWhichRepeat(String prefix, char delimiter, com.google.common.base.Supplier<String> suffixSupplier, Validator<String> groupValidator)

Method Summary

Modifier and Type	Method	Description
protected String	checkGroup(String group)
com.google.common.base.Predicate<String>	containsAnyGroup()	A predicate that identifies if an input has any group encoded in it.
com.google.common.base.Predicate<String>	containsGroup(String group)	A predicate that identifies if an input has the given group encoded in it.
String	extractGroup(String encoded)	Extracts the group from a shared/unique name.
protected String	firstGroupInPatternOrNull(Pattern pattern, String encoded)
String	groupInSharedNameOrNull(String encoded)	retrieve the group associated with the encoded name
String	groupInUniqueNameOrNull(String encoded)	retrieve the group associated with the encoded name
String	sharedNameForGroup(String group)	encodes the {code group parameter} into a name that exists only once in the group.
String	uniqueNameForGroup(String group)	encodes the {code group parameter} into a name that exists more than once in the group.

Methods inherited from class java.lang.Object

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

Field Detail

prefix

protected final String prefix

delimiter

protected final char delimiter

suffixSupplier

protected final com.google.common.base.Supplier<String> suffixSupplier

sharedFormat

protected final String sharedFormat

uniqueFormat

protected final String uniqueFormat

uniqueGroupPattern

protected final Pattern uniqueGroupPattern

sharedGroupPattern

protected final Pattern sharedGroupPattern

groupValidator

protected final Validator<String> groupValidator

Constructor Detail

FormatSharedNamesAndAppendUniqueStringToThoseWhichRepeat

public FormatSharedNamesAndAppendUniqueStringToThoseWhichRepeat(String prefix,
                                                                char delimiter,
                                                                com.google.common.base.Supplier<String> suffixSupplier,
                                                                Validator<String> groupValidator)

Method Detail

sharedNameForGroup

public String sharedNameForGroup(String group)

Description copied from interface: GroupNamingConvention

encodes the {code group parameter} into a name that exists only once in the group.

Specified by:

sharedNameForGroup in interface GroupNamingConvention

checkGroup

protected String checkGroup(String group)

uniqueNameForGroup

public String uniqueNameForGroup(String group)

Description copied from interface: GroupNamingConvention

encodes the {code group parameter} into a name that exists more than once in the group.

note

Do not expect this name to be guaranteed unique, though a good implementation should guess a unique name in one or two tries.

Specified by:

uniqueNameForGroup in interface GroupNamingConvention

groupInUniqueNameOrNull

public String groupInUniqueNameOrNull(String encoded)

Description copied from interface: GroupNamingConvention

retrieve the group associated with the encoded name

Specified by:

groupInUniqueNameOrNull in interface GroupNamingConvention

firstGroupInPatternOrNull

protected String firstGroupInPatternOrNull(Pattern pattern,
                                           String encoded)

groupInSharedNameOrNull

public String groupInSharedNameOrNull(String encoded)

Description copied from interface: GroupNamingConvention

retrieve the group associated with the encoded name

Specified by:

groupInSharedNameOrNull in interface GroupNamingConvention

containsGroup

public com.google.common.base.Predicate<String> containsGroup(String group)

Description copied from interface: GroupNamingConvention

A predicate that identifies if an input has the given group encoded in it.

Specified by:

containsGroup in interface GroupNamingConvention

containsAnyGroup

public com.google.common.base.Predicate<String> containsAnyGroup()

Description copied from interface: GroupNamingConvention

A predicate that identifies if an input has any group encoded in it.

Specified by:

containsAnyGroup in interface GroupNamingConvention

extractGroup

public String extractGroup(String encoded)

Description copied from interface: GroupNamingConvention

Extracts the group from a shared/unique name. Or returns null if not in correct format to contain a group.

Specified by:

extractGroup in interface GroupNamingConvention