| /* |
| * 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.vault.hashicorp.config.lookup; |
| |
| import org.apache.nifi.vault.hashicorp.HashiCorpVaultConfigurationException; |
| import org.apache.nifi.vault.hashicorp.config.HashiCorpVaultProperty; |
| import org.springframework.beans.BeanUtils; |
| |
| import java.beans.PropertyDescriptor; |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.Arrays; |
| import java.util.Map; |
| import java.util.stream.Collectors; |
| |
| /** |
| * A property lookup that indexes the properties of a Java bean. |
| */ |
| public class BeanPropertyLookup extends PropertyLookup { |
| private static final String SEPARATOR = "."; |
| |
| private final Map<String, PropertyLookup> propertyLookupMap; |
| |
| public BeanPropertyLookup(final String prefix, final Class<?> beanClass) { |
| this(prefix, beanClass, null); |
| } |
| |
| private BeanPropertyLookup(final String prefix, final Class<?> beanClass, final PropertyDescriptor propertyDescriptor) { |
| super(propertyDescriptor); |
| propertyLookupMap = Arrays.stream(BeanUtils.getPropertyDescriptors(beanClass)) |
| .filter(pd -> pd.getReadMethod().getAnnotation(HashiCorpVaultProperty.class) != null) |
| .collect(Collectors.toMap( |
| pd -> getPropertyKey(prefix, pd), |
| pd -> pd.getReadMethod().getReturnType().equals(String.class) ? new ValuePropertyLookup(pd) |
| : new BeanPropertyLookup(getPropertyKey(prefix, pd), pd.getReadMethod().getReturnType(), pd) |
| )); |
| } |
| |
| private static String getPropertyKey(final String prefix, final PropertyDescriptor propertyDescriptor) { |
| final HashiCorpVaultProperty propertyAnnotation = propertyDescriptor.getReadMethod().getAnnotation(HashiCorpVaultProperty.class); |
| final String unqualifiedPropertyKey = !propertyAnnotation.key().isEmpty() ? propertyAnnotation.key() : propertyDescriptor.getDisplayName(); |
| return prefix == null ? unqualifiedPropertyKey: String.join(SEPARATOR, prefix, unqualifiedPropertyKey); |
| } |
| |
| @Override |
| public Object getPropertyValue(final String propertyKey, final Object obj) { |
| if (propertyLookupMap.containsKey(propertyKey)) { |
| final PropertyLookup propertyLookup = propertyLookupMap.get(propertyKey); |
| return propertyLookup.getPropertyValue(propertyKey, propertyLookup.getEnclosingObject(obj)); |
| } |
| for(final Map.Entry<String, PropertyLookup> entry : propertyLookupMap.entrySet()) { |
| final String key = entry.getKey(); |
| if (propertyKey.startsWith(key + SEPARATOR)) { |
| final PropertyLookup propertyLookup = entry.getValue(); |
| return propertyLookup.getPropertyValue(propertyKey, propertyLookup.getEnclosingObject(obj)); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public Object getEnclosingObject(Object obj) { |
| try { |
| return getPropertyDescriptor().getReadMethod().invoke(obj); |
| } catch (final IllegalAccessException | InvocationTargetException e) { |
| throw new HashiCorpVaultConfigurationException("Could not invoke " + getPropertyDescriptor().getDisplayName()); |
| } |
| } |
| } |