| /* |
| * 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; |
| |
| import org.apache.nifi.vault.hashicorp.config.lookup.BeanPropertyLookup; |
| import org.apache.nifi.vault.hashicorp.config.lookup.PropertyLookup; |
| import org.springframework.core.env.PropertySource; |
| |
| import java.util.Objects; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| public class HashiCorpVaultPropertySource extends PropertySource<HashiCorpVaultProperties> { |
| private static final String PREFIX = "vault"; |
| private static final Pattern DASH_LETTER_PATTERN = Pattern.compile("-[a-z]"); |
| |
| private PropertyLookup propertyLookup; |
| |
| public HashiCorpVaultPropertySource(final HashiCorpVaultProperties source) { |
| super(HashiCorpVaultPropertySource.class.getName(), source); |
| |
| propertyLookup = new BeanPropertyLookup(PREFIX, HashiCorpVaultProperties.class); |
| } |
| |
| @Override |
| public Object getProperty(final String key) { |
| Objects.requireNonNull(key, "Property key cannot be null"); |
| |
| return propertyLookup.getPropertyValue(getPropertyKey(key), getSource()); |
| } |
| |
| /** |
| * Converts key names from format test-value to testValue |
| * @param springPropertyKey A Spring Vault property key |
| * @return |
| */ |
| private String getPropertyKey(String springPropertyKey) { |
| final Matcher m = DASH_LETTER_PATTERN.matcher(springPropertyKey); |
| final StringBuffer result = new StringBuffer(); |
| while (m.find()) { |
| m.appendReplacement(result, m.group(0).substring(1).toUpperCase()); |
| } |
| m.appendTail(result); |
| return result.toString(); |
| } |
| } |