/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.keycloak.rotation;
import java.security.Key;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
/**
* Key locator that always returns a specified key.
*
* @author <a href="mailto:hmlnarik@redhat.com">Hynek Mlnařík</a>
*/
public class HardcodedKeyLocator implements KeyLocator, Iterable<Key> {
private final Collection<? extends Key> keys;
public HardcodedKeyLocator(Key key) {
this.keys = Collections.singleton(key);
}
public HardcodedKeyLocator(Collection<? extends Key> keys) {
if (keys == null) {
throw new NullPointerException("keys");
}
this.keys = new LinkedList<>(keys);
}
@Override
public Key getKey(String kid) {
if (this.keys.size() == 1) {
return this.keys.iterator().next();
} else {
return null;
}
}
@Override
public void refreshKeyCache() {
// do nothing
}
@Override
public String toString() {
return "hardcoded keys, count: " + this.keys.size();
}
@Override
public Iterator<Key> iterator() {
return Collections.unmodifiableCollection(keys).iterator();
}
}