| /* |
| * 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.nifi.properties; |
| |
| public interface SensitivePropertyProvider { |
| |
| /** |
| * Returns the name of the underlying implementation. |
| * |
| * @return the name of this sensitive property provider |
| */ |
| String getName(); |
| |
| /** |
| * Returns the key used to identify the provider implementation in {@code nifi.properties}. |
| * |
| * @return the key to persist in the sibling property |
| */ |
| String getIdentifierKey(); |
| |
| /** |
| * Returns whether this SensitivePropertyProvider is supported with the current system |
| * configuration. |
| * @return Whether this SensitivePropertyProvider is supported |
| */ |
| boolean isSupported(); |
| |
| /** |
| * Returns the "protected" form of this value. This is a form which can safely be persisted in the {@code nifi.properties} file without compromising the value. |
| * An encryption-based provider would return a cipher text, while a remote-lookup provider could return a unique ID to retrieve the secured value. |
| * |
| * @param unprotectedValue the sensitive value |
| * @return the value to persist in the {@code nifi.properties} file |
| */ |
| String protect(String unprotectedValue) throws SensitivePropertyProtectionException; |
| |
| /** |
| * Returns the "unprotected" form of this value. This is the raw sensitive value which is used by the application logic. |
| * An encryption-based provider would decrypt a cipher text and return the plaintext, while a remote-lookup provider could retrieve the secured value. |
| * |
| * @param protectedValue the protected value read from the {@code nifi.properties} file |
| * @return the raw value to be used by the application |
| */ |
| String unprotect(String protectedValue) throws SensitivePropertyProtectionException; |
| |
| /** |
| * Cleans up resources that may have been allocated/used by an SPP implementation |
| */ |
| void cleanUp(); |
| } |