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.microprofile.health;
  
  import java.util.List;
  import java.util.Objects;
  import java.util.stream.Collectors;
  
  import org.apache.camel.CamelContext;
  import org.apache.camel.health.HealthCheck.Result;
  import org.apache.camel.health.HealthCheck.State;
  import org.apache.camel.health.HealthCheckRegistry;
  import org.apache.camel.health.HealthCheckRepository;
  import org.apache.camel.impl.health.AbstractHealthCheck;
  import org.eclipse.microprofile.health.HealthCheck;
  import org.eclipse.microprofile.health.HealthCheckResponse;
  import org.eclipse.microprofile.health.HealthCheckResponseBuilder;
  
  /**
   * Invokes health checks registered with a {@link HealthCheckRepository} and resolves / aggregates the results into a
   * single UP / DOWN status.
   */
  final class CamelMicroProfileRepositoryHealthCheck implements HealthCheck {
  
      private final CamelContext camelContext;
      private final HealthCheckRepository repository;
      private final String name;
  
      CamelMicroProfileRepositoryHealthCheck(CamelContext camelContext, HealthCheckRepository repository, String name) {
          this.camelContext = camelContext;
          this.repository = repository;
          this.name = name;
      }
  
      @Override
      public HealthCheckResponse call() {
          final HealthCheckResponseBuilder builder = HealthCheckResponse.builder();
          builder.name(name);
          builder.up();
  
          if (repository.isEnabled()) {
              List<Result> results = repository.stream()
                      .filter(org.apache.camel.health.HealthCheck::isEnabled)
                      .map(org.apache.camel.health.HealthCheck::call)
                      .filter(Objects::nonNull)
                      .collect(Collectors.toList());
  
              // If any of the result statuses is DOWN, find the first one and report any error details
              HealthCheckRegistry registry = HealthCheckRegistry.get(camelContext);
              results.stream()
                      .filter(result -> result.getState().equals(State.DOWN))
                      .findFirst()
                      .ifPresent(result -> {
                          CamelMicroProfileHealthHelper.applyHealthDetail(builder, result, registry.getExposureLevel());
                          builder.down();
                      });
          } else {
              builder.withData(AbstractHealthCheck.CHECK_ENABLED, false);
          }
  
          return builder.build();
      }
  }
  