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.fop;
  
  import java.io.InputStream;
  import java.net.URI;
  
  import org.apache.camel.Category;
  import org.apache.camel.Consumer;
  import org.apache.camel.Processor;
  import org.apache.camel.Producer;
  import org.apache.camel.spi.Metadata;
  import org.apache.camel.spi.UriEndpoint;
  import org.apache.camel.spi.UriParam;
  import org.apache.camel.spi.UriPath;
  import org.apache.camel.support.DefaultEndpoint;
  import org.apache.camel.support.ResourceHelper;
  import org.apache.fop.apps.FopFactory;
  
  /**
   * Render messages into PDF and other output formats supported by Apache FOP.
   */
  @UriEndpoint(firstVersion = "2.10.0", scheme = "fop", title = "FOP", syntax = "fop:outputType", producerOnly = true,
               remote = false, category = { Category.FILE, Category.TRANSFORMATION }, headersClass = FopConstants.class)
  public class FopEndpoint extends DefaultEndpoint {
  
      @UriPath
      @Metadata(required = true)
      private FopOutputType outputType;
      @UriParam
      @Metadata(supportFileReference = true)
      private String userConfigURL;
      @UriParam
      private FopFactory fopFactory;
  
      public FopEndpoint(String uri, FopComponent component, FopOutputType outputType) {
          super(uri, component);
          this.outputType = outputType;
      }
  
      @Override
      public boolean isRemote() {
          return false;
      }
  
      @Override
      public Producer createProducer() throws Exception {
          return new FopProducer(this, fopFactory, outputType.getFormatExtended());
      }
  
      @Override
      public Consumer createConsumer(Processor processor) throws Exception {
          throw new UnsupportedOperationException("Consumer not supported for FOP endpoint");
      }
  
      public FopOutputType getOutputType() {
          return outputType;
      }
  
      /**
       * The primary output format is PDF but other output formats are also supported.
       */
      public void setOutputType(FopOutputType outputType) {
          this.outputType = outputType;
      }
  
      public String getUserConfigURL() {
          return userConfigURL;
      }
  
      /**
       * The location of a configuration file which can be loaded from classpath or file system.
       */
      public void setUserConfigURL(String userConfigURL) {
          this.userConfigURL = userConfigURL;
      }
  
      public FopFactory getFopFactory() {
          return fopFactory;
      }
  
      /**
       * Allows to use a custom configured or implementation of org.apache.fop.apps.FopFactory.
       */
      public void setFopFactory(FopFactory fopFactory) {
          this.fopFactory = fopFactory;
      }
  
      @Override
      protected void doInit() throws Exception {
          super.doInit();
  
          if (fopFactory == null && userConfigURL == null) {
              fopFactory = FopFactory.newInstance(new URI("./"));
          } else if (fopFactory != null && userConfigURL != null) {
              throw new FopConfigException(
                      "More than one configuration. "
                                           + "You can configure fop either by config file or by supplying FopFactory but not both.");
          } else if (fopFactory == null && userConfigURL != null) {
              if (ResourceHelper.isClasspathUri(userConfigURL)) {
                  InputStream is = ResourceHelper.resolveMandatoryResourceAsInputStream(getCamelContext(), userConfigURL);
                  fopFactory = FopFactory.newInstance(new URI(userConfigURL), is);
              }
          }
      }
  
      @Override
      protected void doStart() throws Exception {
          super.doStart();
  
          if (fopFactory == null && userConfigURL != null) {
              if (!ResourceHelper.isClasspathUri(userConfigURL)) {
                  InputStream is = ResourceHelper.resolveMandatoryResourceAsInputStream(getCamelContext(), userConfigURL);
                  fopFactory = FopFactory.newInstance(new URI(userConfigURL), is);
              }
          }
      }
  }
  