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.dataformat;
  
  import org.apache.camel.AsyncCallback;
  import org.apache.camel.AsyncProcessor;
  import org.apache.camel.Category;
  import org.apache.camel.Component;
  import org.apache.camel.Consumer;
  import org.apache.camel.Exchange;
  import org.apache.camel.Processor;
  import org.apache.camel.Producer;
  import org.apache.camel.spi.DataFormat;
  import org.apache.camel.spi.Metadata;
  import org.apache.camel.spi.UriEndpoint;
  import org.apache.camel.spi.UriPath;
  import org.apache.camel.support.DefaultAsyncProducer;
  import org.apache.camel.support.DefaultEndpoint;
  import org.apache.camel.support.processor.MarshalProcessor;
  import org.apache.camel.support.processor.UnmarshalProcessor;
  import org.apache.camel.support.service.ServiceHelper;
  
  /**
   * Use a Camel Data Format as a regular Camel Component.
   */
  @UriEndpoint(firstVersion = "2.12.0", scheme = "dataformat", title = "Data Format", syntax = "dataformat:name:operation",
               remote = false, producerOnly = true,
               category = { Category.CORE, Category.TRANSFORMATION }, lenientProperties = true)
  public class DataFormatEndpoint extends DefaultEndpoint {
  
      private AsyncProcessor processor;
      private DataFormat dataFormat;
  
      @UriPath(description = "Name of data format")
      @Metadata(required = true)
      private String name;
      @UriPath(enums = "marshal,unmarshal")
      @Metadata(required = true)
      private String operation;
  
      public DataFormatEndpoint() {
      }
  
      public DataFormatEndpoint(String endpointUri, Component component, DataFormat dataFormat) {
          super(endpointUri, component);
          this.dataFormat = dataFormat;
      }
  
      @Override
      public boolean isRemote() {
          return false;
      }
  
      public String getName() {
          return name;
      }
  
      public void setName(String name) {
          this.name = name;
      }
  
      public DataFormat getDataFormat() {
          return dataFormat;
      }
  
      public void setDataFormat(DataFormat dataFormat) {
          this.dataFormat = dataFormat;
      }
  
      public String getOperation() {
          return operation;
      }
  
      /**
       * Operation to use either marshal or unmarshal
       */
      public void setOperation(String operation) {
          this.operation = operation;
      }
  
      @Override
      public Producer createProducer() throws Exception {
          return new DefaultAsyncProducer(this) {
              @Override
              public boolean process(Exchange exchange, AsyncCallback callback) {
                  return processor.process(exchange, callback);
              }
  
              @Override
              public String toString() {
                  return "DataFormatProducer[" + dataFormat + "]";
              }
          };
      }
  
      @Override
      public Consumer createConsumer(Processor processor) throws Exception {
          throw new UnsupportedOperationException("Cannot consume from data format");
      }
  
      @Override
      public boolean isLenientProperties() {
          return true;
      }
  
      @Override
      protected void doInit() throws Exception {
          super.doInit();
          if (dataFormat == null && name != null) {
              dataFormat = getCamelContext().resolveDataFormat(name);
          }
          if (operation.equals("marshal")) {
              MarshalProcessor marshal = new MarshalProcessor(dataFormat);
              marshal.setCamelContext(getCamelContext());
  
              processor = marshal;
          } else {
              UnmarshalProcessor unmarshal = new UnmarshalProcessor(dataFormat);
              unmarshal.setCamelContext(getCamelContext());
  
              processor = unmarshal;
          }
      }
  
      @Override
      protected void doStart() throws Exception {
          ServiceHelper.startService(dataFormat, processor);
          super.doStart();
      }
  
      @Override
      protected void doStop() throws Exception {
          ServiceHelper.stopService(processor, dataFormat);
          super.doStop();
      }
  }
  