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.spring.cloud.config.springboot;
  
  import org.apache.camel.component.spring.cloud.config.SpringCloudConfigPropertiesFunction;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent;
  import org.springframework.boot.origin.OriginTrackedValue;
  import org.springframework.context.ApplicationListener;
  import org.springframework.core.env.ConfigurableEnvironment;
  import org.springframework.core.env.MapPropertySource;
  import org.springframework.core.env.PropertiesPropertySource;
  import org.springframework.core.env.PropertySource;
  
  import java.util.Properties;
  
  public class SpringBootCloudConfigPropertiesParser implements ApplicationListener<ApplicationEnvironmentPreparedEvent> {
      private static final Logger LOG = LoggerFactory.getLogger(SpringBootCloudConfigPropertiesParser.class);
  
      @Override
      public void onApplicationEvent(ApplicationEnvironmentPreparedEvent event) {
          Properties properties = new Properties();
          ConfigurableEnvironment environment = event.getEnvironment();
  
          if (Boolean.parseBoolean(
                  environment.getProperty("camel.component.spring-cloud-config.early-resolve-properties"))) {
              SpringCloudConfigPropertiesFunction springCloudConfigPropertiesFunction = new SpringCloudConfigPropertiesFunction();
              springCloudConfigPropertiesFunction.setEnvironment(environment);
              for (PropertySource mutablePropertySources : event.getEnvironment().getPropertySources()) {
                  if (mutablePropertySources instanceof MapPropertySource mapPropertySource) {
                      mapPropertySource.getSource().forEach((key, value) -> {
                          String stringValue = null;
                          if ((value instanceof OriginTrackedValue originTrackedValue
                                  && originTrackedValue.getValue() instanceof String v)) {
                              stringValue = v;
                          } else if (value instanceof String v) {
                              stringValue = v;
                          }
                          if (stringValue != null && stringValue.startsWith("{{spring-config:")
                                  && stringValue.endsWith("}}")) {
                              LOG.debug("decrypting and overriding property {}", key);
                              try {
                                  String element = springCloudConfigPropertiesFunction
                                          .apply(stringValue.replace("{{spring-config:", "").replace("}}", ""));
                                  properties.put(key, element);
                              } catch (Exception e) {
                                  // Log and do nothing
                                  LOG.debug("failed to parse property {}. This exception is ignored.", key, e);
                              }
                          }
                      });
                  }
              }
              environment.getPropertySources()
                      .addFirst(new PropertiesPropertySource("overridden-camel-spring-config-properties", properties));
          }
      }
  }
  