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.quarkus.core;
  
  import java.util.Objects;
  import java.util.Set;
  
  import org.apache.camel.spi.PackageScanClassResolver;
  import org.apache.camel.spi.PackageScanFilter;
  import org.apache.camel.support.scan.DefaultPackageScanClassResolver;
  
  /**
   * Custom {@link PackageScanClassResolver} where classes / packages known to be scanned can be computed at build time
   * and cached for resolution at runtime. This is primarily needed for native mode where the default implementation
   * reliance on ClassLoader.getResources is likely to fail due to resources not being embedded within the native image.
   */
  public class CamelQuarkusPackageScanClassResolver extends DefaultPackageScanClassResolver {
      private final Set<? extends Class<?>> classCache;
  
      public CamelQuarkusPackageScanClassResolver(Set<? extends Class<?>> classCache) {
          this.classCache = Objects.requireNonNull(classCache);
      }
  
      @Override
      protected void find(PackageScanFilter test, String packageName, ClassLoader loader, Set<Class<?>> classes) {
          classCache.stream()
                  .filter(clazz -> clazz.getPackageName().replace('.', '/').equals(packageName))
                  .filter(test::matches)
                  .forEach(classes::add);
  
          // Try to fallback on default package scanning
          if (classes.isEmpty()) {
              super.find(test, packageName, loader, classes);
          }
      }
  }
  