Package org.apache.sshd.client.config.keys

Class LazyClientIdentityIterator

java.lang.Object

org.apache.sshd.client.config.keys.LazyClientIdentityIterator

All Implemented Interfaces:

java.util.Iterator<java.security.KeyPair>

public class LazyClientIdentityIterator
extends java.lang.Object
implements java.util.Iterator<java.security.KeyPair>

Wraps several ClientIdentityProvider into a KeyPair Iterator that invokes each provider "lazily" - i.e., only when Iterator.hasNext() is invoked. This prevents password protected private keys to be decrypted until they are actually needed.

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.Iterator<java.security.KeyPair>	currentIdentities
protected java.security.KeyPair	currentPair
private java.util.function.Predicate<java.security.KeyPair>	filter
protected boolean	finished
private java.util.function.Function<? super ClientIdentityProvider,? extends java.lang.Iterable<java.security.KeyPair>>	kpExtractor
private java.util.Iterator<? extends ClientIdentityProvider>	providers

Constructor Summary

Constructors

Constructor	Description
LazyClientIdentityIterator(java.util.Iterator<? extends ClientIdentityProvider> providers, java.util.function.Function<? super ClientIdentityProvider,? extends java.lang.Iterable<java.security.KeyPair>> kpExtractor, java.util.function.Predicate<java.security.KeyPair> filter)

Method Summary

Modifier and Type	Method	Description
java.util.function.Predicate<java.security.KeyPair>	getFilter()
java.util.function.Function<? super ClientIdentityProvider,? extends java.lang.Iterable<java.security.KeyPair>>	getIdentitiesExtractor()
java.util.Iterator<? extends ClientIdentityProvider>	getProviders()
boolean	hasNext()
java.security.KeyPair	next()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Field Detail

finished

protected boolean finished

currentIdentities

protected java.util.Iterator<java.security.KeyPair> currentIdentities

currentPair

protected java.security.KeyPair currentPair

providers

private final java.util.Iterator<? extends ClientIdentityProvider> providers

kpExtractor

private final java.util.function.Function<? super ClientIdentityProvider,? extends java.lang.Iterable<java.security.KeyPair>> kpExtractor

filter

private final java.util.function.Predicate<java.security.KeyPair> filter

Constructor Detail

LazyClientIdentityIterator

public LazyClientIdentityIterator(java.util.Iterator<? extends ClientIdentityProvider> providers,
                                  java.util.function.Function<? super ClientIdentityProvider,? extends java.lang.Iterable<java.security.KeyPair>> kpExtractor,
                                  java.util.function.Predicate<java.security.KeyPair> filter)

Parameters:

providers - The providers - ignored if null

kpExtractor - The (never null) extractor of the KeyPair from the ClientIdentityProvider argument. If returned pair is null then next provider is queried.

filter - Any further filter to apply on (non-null) key pairs before returning it as the Iterator.next() result.

Method Detail

getProviders

public java.util.Iterator<? extends ClientIdentityProvider> getProviders()

getIdentitiesExtractor

public java.util.function.Function<? super ClientIdentityProvider,? extends java.lang.Iterable<java.security.KeyPair>> getIdentitiesExtractor()

getFilter

public java.util.function.Predicate<java.security.KeyPair> getFilter()

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<java.security.KeyPair>

next

public java.security.KeyPair next()

Specified by:

next in interface java.util.Iterator<java.security.KeyPair>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object