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.example.resume.fileset.clusterized.strategies;
  
  import java.io.File;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.caffeine.resume.CaffeineCache;
  import org.apache.camel.example.resume.strategies.kafka.KafkaUtil;
  import org.apache.camel.processor.resume.kafka.KafkaResumeStrategyConfigurationBuilder;
  import org.apache.camel.resume.cache.ResumeCache;
  import org.apache.camel.support.resume.Resumables;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class ClusterizedLargeDirectoryRouteBuilder extends RouteBuilder {
      private static final Logger LOG = LoggerFactory.getLogger(ClusterizedLargeDirectoryRouteBuilder.class);
  
      private void process(Exchange exchange) {
          File path = exchange.getMessage().getHeader("CamelFilePath", File.class);
          LOG.debug("Processing {}", path.getPath());
          exchange.getMessage().setHeader(Exchange.OFFSET, Resumables.of(path.getParentFile(), path));
  
          // Put a delay to simulate slow processing
          try {
              Thread.sleep(100);
          } catch (InterruptedException e) {
              LOG.trace("Interrupted while sleeping", e);
          }
      }
  
      /**
       * Let's configure the Camel routing rules using Java code...
       */
      public void configure() {
          final KafkaResumeStrategyConfigurationBuilder defaultKafkaResumeStrategyConfigurationBuilder = KafkaUtil
                  .getDefaultKafkaResumeStrategyConfigurationBuilder()
                  .withResumeCache(new CaffeineCache<>(10000));
  
          from("timer:heartbeat?period=10000")
                  .routeId("heartbeat")
                  .log("HeartBeat route (timer) ...");
  
          from("master:resume-ns:file:{{input.dir}}?noop=true&recursive=true&repeatCount=1")
                  .resumable()
                  .configuration(defaultKafkaResumeStrategyConfigurationBuilder)
                  .routeId("clustered")
                  .process(this::process)
                  .to("file:{{output.dir}}");
      }
  
  }
  