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.aws.secretsmanager.springboot;
  
  import org.apache.camel.RuntimeCamelException;
  import org.apache.camel.component.aws.secretsmanager.SecretsManagerPropertiesFunction;
  import org.apache.camel.util.ObjectHelper;
  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 software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
  import software.amazon.awssdk.auth.credentials.ProfileCredentialsProvider;
  import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
  import software.amazon.awssdk.regions.Region;
  import software.amazon.awssdk.services.secretsmanager.SecretsManagerClient;
  import software.amazon.awssdk.services.secretsmanager.SecretsManagerClientBuilder;
  
  import java.util.Properties;
  
  public class SpringBootAwsSecretsManagerPropertiesParser implements ApplicationListener<ApplicationEnvironmentPreparedEvent> {
      private static final Logger LOG = LoggerFactory.getLogger(SpringBootAwsSecretsManagerPropertiesParser.class);
  
      @Override
      public void onApplicationEvent(ApplicationEnvironmentPreparedEvent event) {
          SecretsManagerClient client;
          ConfigurableEnvironment environment = event.getEnvironment();
          if (Boolean.parseBoolean(environment.getProperty("camel.component.aws-secrets-manager.early-resolve-properties"))) {
              String accessKey = environment.getProperty("camel.vault.aws.accessKey");
              String secretKey = environment.getProperty("camel.vault.aws.secretKey");
              String region = environment.getProperty("camel.vault.aws.region");
              boolean useDefaultCredentialsProvider = Boolean.parseBoolean(environment.getProperty("camel.vault.aws.defaultCredentialsProvider"));
              boolean useProfileCredentialsProvider = Boolean.parseBoolean(environment.getProperty("camel.vault.aws.profileCredentialsProvider"));
              String profileName = environment.getProperty("camel.vault.aws.profileName");
              if (ObjectHelper.isNotEmpty(accessKey) && ObjectHelper.isNotEmpty(secretKey) && ObjectHelper.isNotEmpty(region)) {
                  SecretsManagerClientBuilder clientBuilder = SecretsManagerClient.builder();
                  AwsBasicCredentials cred = AwsBasicCredentials.create(accessKey, secretKey);
                  clientBuilder = clientBuilder.credentialsProvider(StaticCredentialsProvider.create(cred));
                  clientBuilder.region(Region.of(region));
                  client = clientBuilder.build();
              } else if (useDefaultCredentialsProvider && ObjectHelper.isNotEmpty(region)) {
                  SecretsManagerClientBuilder clientBuilder = SecretsManagerClient.builder();
                  clientBuilder.region(Region.of(region));
                  client = clientBuilder.build();
              } else if (useProfileCredentialsProvider && ObjectHelper.isNotEmpty(profileName)) {
                  SecretsManagerClientBuilder clientBuilder = SecretsManagerClient.builder();
                  clientBuilder.credentialsProvider(ProfileCredentialsProvider.create(profileName));
                  clientBuilder.region(Region.of(region));
                  client = clientBuilder.build();
              } else {
                  throw new RuntimeCamelException(
                          "Using the AWS Secrets Manager Properties Function requires setting AWS credentials as application properties or environment variables");
              }
              SecretsManagerPropertiesFunction secretsManagerPropertiesFunction = new SecretsManagerPropertiesFunction(client);
  
              final Properties props = new Properties();
              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("{{aws:") &&
                                  stringValue.endsWith("}}")) {
                              LOG.debug("decrypting and overriding property {}", key);
                              try {
                                  String element = secretsManagerPropertiesFunction.apply(stringValue
                                          .replace("{{aws:", "")
                                          .replace("}}", ""));
                                  props.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-aws-secrets-manager-properties", props));
          }
      }
  }
  