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.ehcache;
  
  import java.io.IOException;
  import java.net.URL;
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  import java.util.concurrent.ConcurrentMap;
  
  import org.apache.camel.CamelContext;
  import org.apache.camel.Endpoint;
  import org.apache.camel.spi.Metadata;
  import org.apache.camel.spi.annotations.Component;
  import org.apache.camel.support.DefaultComponent;
  import org.apache.camel.support.ResourceHelper;
  import org.apache.camel.util.ObjectHelper;
  import org.ehcache.CacheManager;
  import org.ehcache.config.CacheConfiguration;
  import org.ehcache.config.Configuration;
  import org.ehcache.config.builders.CacheManagerBuilder;
  import org.ehcache.xml.XmlConfiguration;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Represents the component that manages {@link DefaultComponent}.
   */
  @Component("ehcache")
  public class EhcacheComponent extends DefaultComponent {
      private static final Logger LOGGER = LoggerFactory.getLogger(EhcacheComponent.class);
  
      private final ConcurrentMap<Object, EhcacheManager> managers = new ConcurrentHashMap<>();
  
      @Metadata(label = "advanced")
      private EhcacheConfiguration configuration = new EhcacheConfiguration();
  
      public EhcacheComponent() {
      }
  
      public EhcacheComponent(CamelContext context) {
          super(context);
      }
  
      @Override
      protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception {
          EhcacheEndpoint endpoint = new EhcacheEndpoint(uri, this, remaining, this.configuration.copy());
          setProperties(endpoint, parameters);
          return endpoint;
      }
  
      // ****************************
      // Helpers
      // ****************************
  
      public EhcacheManager createCacheManager(EhcacheConfiguration configuration) throws IOException {
          ObjectHelper.notNull(configuration, "Camel Ehcache configuration");
  
          // Check if a cache manager has been configured
          if (configuration.hasCacheManager()) {
              LOGGER.info("EhcacheManager configured with supplied CacheManager");
  
              return managers.computeIfAbsent(
                      configuration.getCacheManager(),
                      m -> new EhcacheManager(
                              CacheManager.class.cast(m),
                              false,
                              configuration));
          }
  
          // Check if a cache manager configuration has been provided
          if (configuration.hasCacheManagerConfiguration()) {
              LOGGER.info("EhcacheManager configured with supplied CacheManagerConfiguration");
  
              return managers.computeIfAbsent(
                      configuration.getCacheManagerConfiguration(),
                      c -> new EhcacheManager(
                              CacheManagerBuilder.newCacheManager(Configuration.class.cast(c)),
                              true,
                              configuration));
          }
  
          // Check if a configuration file has been provided
          if (configuration.hasConfigurationUri()) {
              String configurationUri = configuration.getConfigurationUri();
              URL url = ResourceHelper.resolveMandatoryResourceAsUrl(getCamelContext(), configurationUri);
  
              LOGGER.info("EhcacheManager configured with supplied URI {}", url);
  
              return managers.computeIfAbsent(
                      url,
                      u -> new EhcacheManager(
                              CacheManagerBuilder.newCacheManager(new XmlConfiguration(URL.class.cast(u))),
                              true,
                              configuration));
          }
  
          LOGGER.info("EhcacheManager configured with default builder");
          return new EhcacheManager(CacheManagerBuilder.newCacheManagerBuilder().build(), true, configuration);
      }
  
      // ****************************
      // Properties
      // ****************************
  
      public EhcacheConfiguration getConfiguration() {
          return configuration;
      }
  
      /**
       * Sets the global component configuration
       */
      public void setConfiguration(EhcacheConfiguration configuration) {
          // The component configuration can't be null
          ObjectHelper.notNull(configuration, "EhcacheConfiguration");
  
          this.configuration = configuration;
      }
  
      public CacheManager getCacheManager() {
          return configuration.getCacheManager();
      }
  
      /**
       * The cache manager
       */
      public void setCacheManager(CacheManager cacheManager) {
          this.configuration.setCacheManager(cacheManager);
      }
  
      public Configuration getCacheManagerConfiguration() {
          return configuration.getCacheManagerConfiguration();
      }
  
      /**
       * The cache manager configuration
       */
      public void setCacheManagerConfiguration(Configuration cacheManagerConfiguration) {
          this.configuration.setCacheManagerConfiguration(cacheManagerConfiguration);
      }
  
      /**
       * The default cache configuration to be used to create caches.
       */
      public void setCacheConfiguration(CacheConfiguration cacheConfiguration) {
          this.configuration.setConfiguration(cacheConfiguration);
      }
  
      public CacheConfiguration getCacheConfiguration() {
          return this.configuration.getConfiguration();
      }
  
      public Map<String, CacheConfiguration> getCachesConfigurations() {
          return configuration.getConfigurations();
      }
  
      /**
       * A map of caches configurations to be used to create caches.
       */
      public void setCachesConfigurations(Map<String, CacheConfiguration> configurations) {
          configuration.setConfigurations(configurations);
      }
  
      public void addCachesConfigurations(Map<String, CacheConfiguration> configurations) {
          configuration.addConfigurations(configurations);
      }
  
      public String getCacheConfigurationUri() {
          return this.configuration.getConfigurationUri();
      }
  
      /**
       * URI pointing to the Ehcache XML configuration file's location
       */
      public void setCacheConfigurationUri(String configurationUri) {
          this.configuration.setConfigurationUri(configurationUri);
      }
  }
  