I have functional code, but I want to ask if this approach is correct when I use 'publisher in the controller' or if it is commonly used that way. I will post the entire code here where I use RabbitMQ and Redis. If you have any comments on other aspects of the code, feel free to write them.
Do i need to have redis config when its not being used?Are the values stored into redis only by the key: iot-data?
DOCKER
services: redis: container_name: "redis-server" image: redis:latest ports: - "6379:6379" volumes: - ./tmp/redis_data:/var/lib/redis/data rabbitmq: image: rabbitmq:3-management-alpine container_name: 'rabbitmq' ports: - 5672:5672 - 15672:15672 volumes: - ~/.docker-conf/rabbitmq/data/:/var/lib/rabbitmq/ - ~/.docker-conf/rabbitmq/log/:/var/log/rabbitmqREDIS
app.propertiesspring.cache.type=redisspring.redis.host=127.0.0.1spring.redis.port=6379public class RedisConfig { @Bean public JedisConnectionFactory jedisConnectionFactory() { return new JedisConnectionFactory(); } @Bean public RedisTemplate<String, Object> redisTemplate() { RedisTemplate<String, Object> template = new RedisTemplate<>(); template.setConnectionFactory(jedisConnectionFactory()); return template; }}- Redis controller just for testing the redis cache
@RestControllerpublic class RedisController { @Autowired private RedisTemplate redisTemplate; @GetMapping("/api/redis") public List<String> readIotData() { return redisTemplate.opsForList().range("iot-data", 0, 20); }RABBITMQ
@Configurationpublic class RabbitmqConfig { @Bean public RabbitAdmin rabbitAdmin(ConnectionFactory connectionFactory) { return new RabbitAdmin(connectionFactory); } @Bean public FanoutExchange fanout() { return new FanoutExchange("iot-data"); } private static class ReceiverConfig { @Bean public Queue myQueue() { return new Queue("", true); } @Bean public Binding binding(FanoutExchange fanout, Queue myQueue) { return BindingBuilder.bind(myQueue).to(fanout); } }}@Componentpublic class RabbitmqListener { @Autowired private RedisTemplate redisTemplate; private static final String EXCHANGE_NAME = "iot-data"; @RabbitListener(autoStartup="true", bindings=@QueueBinding(value = @Queue, exchange=@Exchange(name=EXCHANGE_NAME, type= ExchangeTypes.FANOUT, durable = "true"))) public void consoleOutputReceiver(String message) { System.out.println("Received message: " + message); } @RabbitListener(autoStartup="true", bindings=@QueueBinding(value = @Queue, exchange=@Exchange(name=EXCHANGE_NAME, type= ExchangeTypes.FANOUT, durable = "true"))) public void redisOutputReceiver(String message) throws IOException { ObjectMapper mapper = new ObjectMapper(); CreateDto dto = mapper.readValue(message, CreateDto.class); redisTemplate.opsForList().leftPush("iot-data", message); }}- rabbitmq publisher
@RestController@RequestMapping("api")public class Controller { @PostMapping("/test") public void post(@RequestBody CreateDto dto) throws Exception{ ConnectionFactory factory = new ConnectionFactory(); factory.setHost("localhost"); try(Connection connection = factory.newConnection(); Channel channel = connection.createChannel()) { channel.exchangeDeclare("iot-data", "fanout", true); ObjectMapper mapper = new ObjectMapper(); String jsonDto = mapper.writeValueAsString(dto); channel.basicPublish("iot-data","", null, jsonDto.getBytes("UTF-8")); Thread.sleep(2000); } }}
