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.quarkus.component.leveldb.it;
  
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.apache.camel.AggregationStrategy;
  import org.apache.camel.Exchange;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.leveldb.LevelDBAggregationRepository;
  import org.apache.camel.quarkus.component.leveldb.QuarkusLevelDBAggregationRepository;
  
  public class LeveldbRouteBuilder extends RouteBuilder {
      public static final String DIRECT_START = "direct:start";
      public static final String DIRECT_BINARY = "direct:binary";
      public static final String DIRECT_START_WITH_FAILURE = "direct:startWithFailure";
      public static final String DIRECT_START_DEAD_LETTER = "direct:startDeadLetter";
      public static final String MOCK_AGGREGATED = "mock:aggregated";
      public static final String MOCK_RESULT = "mock:result";
      public static final String MOCK_DEAD = "mock:dead";
      public static final String DATA_FOLDER = "target/data";
  
      private static AtomicInteger counter = new AtomicInteger(0);
  
      @Override
      public void configure() {
          LevelDBAggregationRepository repo = new QuarkusLevelDBAggregationRepository("repo", DATA_FOLDER + "leveldb.dat");
  
          from(DIRECT_START)
                  .aggregate(header("id"), new MyAggregationStrategy())
                  .completionSize(7).aggregationRepository(repo)
                  .to(MOCK_RESULT);
  
          LevelDBAggregationRepository repoBinary = new QuarkusLevelDBAggregationRepository("repo",
                  DATA_FOLDER + "levelBinarydb.dat");
  
          from(DIRECT_BINARY)
                  .aggregate(header("id"), new BinaryAggregationStrategy())
                  .completionSize(3).aggregationRepository(repoBinary)
                  .to(MOCK_RESULT);
  
          LevelDBAggregationRepository repoWithFailure = new QuarkusLevelDBAggregationRepository("repoWithFailure",
                  DATA_FOLDER + "leveldbWithFailure.dat");
  
          repoWithFailure.setUseRecovery(true);
          repoWithFailure.setRecoveryInterval(500, TimeUnit.MILLISECONDS);
  
          from(DIRECT_START_WITH_FAILURE)
                  .aggregate(header("id"), new MyAggregationStrategy())
                  .completionSize(7).aggregationRepository(repoWithFailure)
                  .to(MOCK_AGGREGATED)
                  .process(exchange -> {
                      int count = counter.incrementAndGet();
                      if (count <= 2) {
                          throw new IllegalArgumentException("Failure");
                      }
                  })
                  .to(MOCK_RESULT)
                  .end();
  
          LevelDBAggregationRepository repoDeadLetter = new QuarkusLevelDBAggregationRepository("repoDeadLetter",
                  DATA_FOLDER + "leveldbDeadLetter.dat");
  
          repoDeadLetter.setUseRecovery(true);
          repoDeadLetter.setRecoveryInterval(500, TimeUnit.MILLISECONDS);
          repoDeadLetter.setMaximumRedeliveries(3);
          repoDeadLetter.setDeadLetterUri(MOCK_DEAD);
  
          from(DIRECT_START_DEAD_LETTER)
                  .aggregate(header("id"), new MyAggregationStrategy())
                  .completionSize(7).aggregationRepository(repoDeadLetter)
                  .to(MOCK_AGGREGATED)
                  .process(e -> {
                      throw new IllegalArgumentException("Failure");
                  })
                  .log("XXX: result exchange id ${exchangeId} with ${body}")
                  .to(MOCK_RESULT)
                  .end();
      }
  
      public static class MyAggregationStrategy implements AggregationStrategy {
  
          @Override
          public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
              if (oldExchange == null) {
                  return newExchange;
              }
              String body1 = oldExchange.getIn().getBody(String.class);
              String body2 = newExchange.getIn().getBody(String.class);
  
              oldExchange.getIn().setBody(body1 + "+" + body2);
              return oldExchange;
          }
      }
  
      public static class BinaryAggregationStrategy implements AggregationStrategy {
  
          @Override
          public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
              if (oldExchange == null) {
                  return newExchange;
              }
              byte[] body1 = oldExchange.getIn().getBody(byte[].class);
              byte[] body2 = newExchange.getIn().getBody(byte[].class);
  
              //keeps longer byte[]
              oldExchange.getIn().setBody(body1.length > body2.length ? body1 : body2);
              return oldExchange;
          }
      }
  }
  