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.google.pubsub.integration;
  
  import java.nio.charset.StandardCharsets;
  
  import org.apache.camel.BindToRegistry;
  import org.apache.camel.Endpoint;
  import org.apache.camel.EndpointInject;
  import org.apache.camel.Produce;
  import org.apache.camel.ProducerTemplate;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.google.pubsub.PubsubTestSupport;
  import org.apache.camel.component.google.pubsub.serializer.GooglePubsubSerializer;
  import org.apache.camel.component.mock.MockEndpoint;
  import org.junit.jupiter.api.Test;
  
  public class CustomSerializerIT extends PubsubTestSupport {
  
      private static final String TOPIC_NAME = "typesSend";
      private static final String SUBSCRIPTION_NAME = "TypesReceive";
  
      @EndpointInject("direct:from")
      private Endpoint directIn;
  
      @EndpointInject("google-pubsub:{{project.id}}:" + TOPIC_NAME)
      private Endpoint pubsubTopic;
  
      @EndpointInject("google-pubsub:{{project.id}}:" + SUBSCRIPTION_NAME + "?synchronousPull=true")
      private Endpoint pubsubSubscription;
  
      @EndpointInject("mock:receiveResult")
      private MockEndpoint receiveResult;
  
      @Produce("direct:from")
      private ProducerTemplate producer;
  
      @BindToRegistry
      private GooglePubsubSerializer serializer = new CustomSerializer();
  
      @Override
      public void createTopicSubscription() {
          createTopicSubscriptionPair(TOPIC_NAME, SUBSCRIPTION_NAME);
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              public void configure() {
                  from(directIn).to(pubsubTopic);
  
                  from(pubsubSubscription).to(receiveResult);
              }
          };
      }
  
      @Test
      public void customSerializer() throws Exception {
          receiveResult.expectedBodiesReceived("12345 custom serialized".getBytes(StandardCharsets.UTF_8));
  
          producer.sendBody(12345);
  
          receiveResult.assertIsSatisfied();
      }
  
      private static final class CustomSerializer implements GooglePubsubSerializer {
  
          @Override
          public byte[] serialize(Object payload) {
              // Append 'custom serialized' to the payload
              String serialized = payload + " custom serialized";
              return serialized.getBytes(StandardCharsets.UTF_8);
          }
      }
  }
  