content: /*
   * 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.camel.component.jasypt.springboot;
  
  import org.jasypt.encryption.StringEncryptor;
  import org.springframework.beans.BeansException;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
  import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
  import org.springframework.core.env.ConfigurablePropertyResolver;
  import org.springframework.util.StringValueResolver;
  
  import static org.jasypt.properties.PropertyValueEncryptionUtils.decrypt;
  import static org.jasypt.properties.PropertyValueEncryptionUtils.isEncryptedValue;
  
  public class EncryptablePropertySourcesPlaceholderConfigurer extends PropertySourcesPlaceholderConfigurer {
      /**
       * The encryptor.
       */
      private StringEncryptor stringEncryptor;
  
      /**
       * PropertySourcesPlaceholderConfigurer constructor
       *
       * @param stringEncryptor
       *            the encryptor
       */
      @Autowired
      public EncryptablePropertySourcesPlaceholderConfigurer(StringEncryptor stringEncryptor) {
          this.stringEncryptor = stringEncryptor;
      }
  
      /**
       * Visit each bean definition in the given bean factory and attempt to replace ${...} property placeholders with
       * values from the given properties. If a property is encrypted, it decrypt first and then replace.
       *
       * @param beanFactory
       *            the bean factory to process.
       * @param propertyResolver
       *            used to resolve the properties
       *
       * @throws BeansException
       *             If an error occurs.
       */
      @Override
      protected void processProperties(ConfigurableListableBeanFactory beanFactory,
              final ConfigurablePropertyResolver propertyResolver) throws BeansException {
  
          propertyResolver.setPlaceholderPrefix(this.placeholderPrefix);
          propertyResolver.setPlaceholderSuffix(this.placeholderSuffix);
          propertyResolver.setValueSeparator(this.valueSeparator);
  
          StringValueResolver valueResolver = strVal -> {
              String resolved = this.ignoreUnresolvablePlaceholders ? propertyResolver.resolvePlaceholders(strVal)
                      : propertyResolver.resolveRequiredPlaceholders(strVal);
              if (this.trimValues) {
                  resolved = resolved.trim();
              }
              if (isEncryptedValue(resolved)) {
                  resolved = decrypt(resolved, stringEncryptor);
              }
              return (resolved.equals(this.nullValue) ? null : resolved);
          };
          doProcessProperties(beanFactory, valueResolver);
      }
  }
  