org.apache.hadoop.crypto.key.KeyProviderExtension Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.hadoop.crypto.key;
import java.io.IOException;
import java.security.NoSuchAlgorithmException;
import java.util.List;
/**
* This is a utility class used to extend the functionality of KeyProvider, that
* takes a KeyProvider and an Extension. It implements all the required methods
* of the KeyProvider by delegating it to the provided KeyProvider.
*/
public abstract class KeyProviderExtension
extends KeyProvider {
/**
* A marker interface for the KeyProviderExtension subclass implement.
*/
public static interface Extension {
}
private KeyProvider keyProvider;
private E extension;
public KeyProviderExtension(KeyProvider keyProvider, E extensions) {
super(keyProvider.getConf());
this.keyProvider = keyProvider;
this.extension = extensions;
}
protected E getExtension() {
return extension;
}
protected KeyProvider getKeyProvider() {
return keyProvider;
}
@Override
public boolean isTransient() {
return keyProvider.isTransient();
}
@Override
public Metadata[] getKeysMetadata(String... names) throws IOException {
return keyProvider.getKeysMetadata(names);
}
@Override
public KeyVersion getCurrentKey(String name) throws IOException {
return keyProvider.getCurrentKey(name);
}
@Override
public KeyVersion createKey(String name, Options options)
throws NoSuchAlgorithmException, IOException {
return keyProvider.createKey(name, options);
}
@Override
public KeyVersion rollNewVersion(String name)
throws NoSuchAlgorithmException, IOException {
return keyProvider.rollNewVersion(name);
}
@Override
public KeyVersion getKeyVersion(String versionName) throws IOException {
return keyProvider.getKeyVersion(versionName);
}
@Override
public List getKeys() throws IOException {
return keyProvider.getKeys();
}
@Override
public List getKeyVersions(String name) throws IOException {
return keyProvider.getKeyVersions(name);
}
@Override
public Metadata getMetadata(String name) throws IOException {
return keyProvider.getMetadata(name);
}
@Override
public KeyVersion createKey(String name, byte[] material, Options options)
throws IOException {
return keyProvider.createKey(name, material, options);
}
@Override
public void deleteKey(String name) throws IOException {
keyProvider.deleteKey(name);
}
@Override
public KeyVersion rollNewVersion(String name, byte[] material)
throws IOException {
return keyProvider.rollNewVersion(name, material);
}
@Override
public void invalidateCache(String name) throws IOException {
keyProvider.invalidateCache(name);
}
@Override
public void flush() throws IOException {
keyProvider.flush();
}
@Override
public String toString() {
return getClass().getSimpleName() + ": " + keyProvider.toString();
}
}
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