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.jt400;
  
  import java.util.Map;
  
  import com.ibm.as400.access.AS400ConnectionPool;
  import org.apache.camel.Endpoint;
  import org.apache.camel.spi.Metadata;
  import org.apache.camel.spi.annotations.Component;
  import org.apache.camel.support.EndpointHelper;
  import org.apache.camel.support.HealthCheckComponent;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * {@link org.apache.camel.Component} to provide integration with IBM i objects (IBM i is the replacement for AS/400 and
   * iSeries servers).
   *
   * Current implementation supports working with data queues (*DTAQ), message queues (*MSGQ), and Program calls (*PGM)
   */
  @Component("jt400")
  public class Jt400Component extends HealthCheckComponent {
  
      /**
       * Name of the connection pool URI option.
       */
      static final String CONNECTION_POOL = "connectionPool";
  
      /**
       * Logging tool used by this class.
       */
      private static final Logger LOG = LoggerFactory.getLogger(Jt400Component.class);
  
      /**
       * Default connection pool used by the component. Note that this pool is lazily initialized. This is because in a
       * scenario where the user always provides a pool, it would be wasteful for Camel to initialize and keep an idle
       * pool.
       */
      @Metadata(label = "advanced")
      private AS400ConnectionPool connectionPool;
  
      public Jt400Component() {
      }
  
      @Override
      protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> properties) throws Exception {
          AS400ConnectionPool connectionPool;
          if (properties.containsKey(CONNECTION_POOL)) {
              LOG.trace("AS400ConnectionPool instance specified in the URI - will look it up.");
  
              // We have chosen to handle the connectionPool option ourselves, so
              // we must remove it from the given parameter list (see
              // http://camel.apache.org/writing-components.html)
              String poolId = properties.remove(CONNECTION_POOL).toString();
              connectionPool
                      = EndpointHelper.resolveReferenceParameter(getCamelContext(), poolId, AS400ConnectionPool.class, true);
          } else {
              LOG.trace("No AS400ConnectionPool instance specified in the URI - one will be provided.");
              connectionPool = getConnectionPool();
          }
  
          String type = remaining.substring(remaining.lastIndexOf('.') + 1).toUpperCase();
          Jt400Endpoint endpoint = new Jt400Endpoint(uri, this, connectionPool);
          setProperties(endpoint, properties);
          endpoint.setType(Jt400Type.valueOf(type));
          return endpoint;
      }
  
      /**
       * Returns the default connection pool used by this component.
       *
       * @return the default connection pool used by this component
       */
      public AS400ConnectionPool getConnectionPool() {
          lock.lock();
          try {
              if (connectionPool == null) {
                  LOG.info("Instantiating the default connection pool ...");
                  connectionPool = new AS400ConnectionPool();
              }
              return connectionPool;
          } finally {
              lock.unlock();
          }
      }
  
      public void setConnectionPool(AS400ConnectionPool connectionPool) {
          this.connectionPool = connectionPool;
      }
  
      @Override
      protected void doShutdown() throws Exception {
          super.doShutdown();
          if (connectionPool != null) {
              LOG.info("Shutting down the default connection pool {} ...", connectionPool);
              connectionPool.close();
              connectionPool = null;
          }
      }
  
  }
  