Spring Boot Apache Artemis Embedded JMS Queue Eample - spring

I am trying to set up a simple Spring Boot application that uses an embedded JMS Queue. I am successful with HornetQ but when I try to convert to Artemis I am getting a failure on the ArtemisConnectionFactory. Here is my code that I use for HornetQ. Any help would be appreciative.
package com.comporium.log.server;
import javax.jms.ConnectionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.PropertySource;
import org.springframework.jms.listener.DefaultMessageListenerContainer;
import com.comporium.log.server.services.LogListener;
#SpringBootApplication
public class Application {
#Autowired
private ConnectionFactory connectionFactory;
#Autowired
LogListener logListener;
#Bean
public DefaultMessageListenerContainer messageListener() {
DefaultMessageListenerContainer container = new DefaultMessageListenerContainer();
container.setConnectionFactory(this.connectionFactory);
container.setDestinationName("loggerQueue");
container.setMessageListener(logListener);
return container;
}
public static void main(String[] args) throws Exception {
SpringApplication.run(Application.class, args);
}
}

For me your code worked. To test the application I have added a CommandLineRunner which produces a message.
#Bean
CommandLineRunner sendMessage(JmsTemplate jmsTemplate) {
return args -> {
jmsTemplate.convertAndSend("loggerQueue", "Message to Artemis");
};
}
The consumer will consume the message sent to this queue. It it not necessary to declare any properties, but I have defined the following compile time dependencies on my project:
compile('org.springframework.boot:spring-boot-starter-artemis')
compile('org.apache.activemq:artemis-jms-server')

Related

How to provide custom SSLContext to Netty server on spring boot

How can we configure a custom SSLContext to a spring boot application with Netty server?
From the source code, I see 'reactor.ipc.netty.http.server.HttpServerOptions' which are some server startup options, but I don't find a way to configure them.
Is there any handler through which we can inject our custom SSLContext?
I am looking something similar to this (Spring 5 WebClient using ssl) where WebClient is configured with a custom SSLContext through 'reactor.ipc.netty.http.client.HttpClientOptions'.
Netty can be customized like blow example in spring-boot 2.
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.web.embedded.netty.NettyReactiveWebServerFactory;
import org.springframework.boot.web.server.ErrorPage;
import org.springframework.boot.web.server.Ssl;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;
/**
* author : Mohammad Ghoreishi
*/
#Configuration
#ImportResource({"classpath:convert-iban-service.xml", "classpath:config-loader-context.xml", "classpath*:error-resolver.xml"})
#EnableAutoConfiguration
public class Application {
public static void main(String[] args) throws Exception {
SpringApplication.run(Application.class, args);
}
#Bean
public WebServerFactoryCustomizer<NettyReactiveWebServerFactory> customizer(){
return new WebServerFactoryCustomizer<NettyReactiveWebServerFactory>() {
#Override
public void customize(NettyReactiveWebServerFactory factory) {
Ssl ssl = new Ssl();
// Your SSL Cusomizations
ssl.setEnabled(true);
ssl.setKeyStore("/path/to/keystore/keystore.jks");
ssl.setKeyAlias("alias");
ssl.setKeyPassword("password");
factory.setSsl(ssl);
factory.addErrorPages(new ErrorPage("/errorPage"));
}
};
}
}

Configuring MessageTransformer for ActiveMQ/Stomp in SpringBoot

I have a springboot project with ActiveMQ and Stomp.
I want every Message sent or received to run through a MessageTransformer, to do specific serialization/deserialization stuff.
The Stomp Message exchange with my WebApp works, but the installed MessageTransformer is never called.
Does anybody have an idea what could be wrong? Thank you much!
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.MessageTransformer;
import org.apache.activemq.broker.BrokerFactory;
import org.apache.activemq.broker.BrokerService;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.AbstractWebSocketMessageBrokerConfigurer;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
#Configuration
#EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {
#Value("${stomp.port}") // 61616
int stompPort;
#Bean
public ActiveMQConnectionFactory activeMQConnectionFactory() {
ActiveMQConnectionFactory activeMQConnectionFactory =
new ActiveMQConnectionFactory("vm://localhost");
// Install Message Converter ## But does not work ##
MessageTransformer messageTransformer = new ClientMessageTransformer();
activeMQConnectionFactory.setTransformer(messageTransformer);
return activeMQConnectionFactory;
}
#Bean
public BrokerService brokerService() throws Exception {
BrokerService brokerService =
BrokerFactory.createBroker(String.format(
"broker:(stomp://localhost:%d)" +
"?persistent=false&useJmx=false&useShutdownHook=true",
stompPort));
return brokerService;
}

Spring Integration HTTP Outbound Gateway Post Request with Java DSL

I am trying to consume a rest service and receive a json back and convert it to a list of objects. but I am receiving the below erorr. I am new to EIP and there aren't many tutorials for doing this in java dsl. I have configured 2 channels, one for sending a request and one for receiving the payload back.
Exception in thread "main" org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'httpPostAtms' is expected to be of type 'org.springframework.messaging.MessageChannel' but was actually of type 'org.springframework.integration.dsl.StandardIntegrationFlow'
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:378)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.integration.support.channel.BeanFactoryChannelResolver.resolveDestination(BeanFactoryChannelResolver.java:89)
at org.springframework.integration.support.channel.BeanFactoryChannelResolver.resolveDestination(BeanFactoryChannelResolver.java:46)
at org.springframework.integration.gateway.MessagingGatewaySupport.getRequestChannel(MessagingGatewaySupport.java:344)
at org.springframework.integration.gateway.MessagingGatewaySupport.doSendAndReceive(MessagingGatewaySupport.java:433)
at org.springframework.integration.gateway.MessagingGatewaySupport.sendAndReceive(MessagingGatewaySupport.java:422)
at org.springframework.integration.gateway.GatewayProxyFactoryBean.invokeGatewayMethod(GatewayProxyFactoryBean.java:474)
at org.springframework.integration.gateway.GatewayProxyFactoryBean.doInvoke(GatewayProxyFactoryBean.java:429)
at org.springframework.integration.gateway.GatewayProxyFactoryBean.invoke(GatewayProxyFactoryBean.java:420)
at org.springframework.integration.gateway.GatewayCompletableFutureProxyFactoryBean.invoke(GatewayCompletableFutureProxyFactoryBean.java:65)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy70.getAllAtms(Unknown Source)
at com.backbase.atm.IngAtmApplication.main(IngAtmApplication.java:25)
I am using SI with Spring Boot
#IntegrationComponentScan
#Configuration
#EnableIntegration
#ComponentScan
public class InfrastructorConfig {
#Bean
public PollableChannel requestChannel() {
return new PriorityChannel() ;
}
#Bean
public MessageChannel replyChannel() {
return new DirectChannel() ;
}
#Bean(name = PollerMetadata.DEFAULT_POLLER)
public PollerMetadata poller() {
return Pollers.fixedRate(500).get();
}
#Bean
public IntegrationFlow httpPostAtms() {
return IntegrationFlows.from("requestChannel")
.handle(Http.outboundGateway("https://www.ing.nl/api/locator/atms/")
.httpMethod(HttpMethod.POST)
.extractPayload(true))
.<String, String>transform(p -> p.substring(5))
.transform(Transformers.fromJson(Atm[].class))
.channel("responseChannel")
.get();
}
}
The Gateway
package com.backbase.atm.service;
import java.util.List;
import org.springframework.integration.annotation.Gateway;
import org.springframework.integration.annotation.MessagingGateway;
import org.springframework.messaging.handler.annotation.Payload;
import com.backbase.atm.model.Atm;
#MessagingGateway
public interface IntegrationService {
#Gateway(requestChannel = "httpPostAtms")
#Payload("new java.util.Date()")
List<Atm> getAllAtms();
}
Application Start
package com.backbase.atm;
import java.util.ArrayList;
import java.util.List;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.Bean;
import com.backbase.atm.service.IntegrationService;
#SpringBootApplication
public class IngAtmApplication {
public static void main(String[] args) {
ConfigurableApplicationContext ctx = SpringApplication.run(IngAtmApplication.class, args);
ctx.getBean(IntegrationService.class).getAllAtms();
ctx.close();
}
You have to use requestChannel bean name in the gateway definition. Right now you have there an IntegrationFlow bean name, but that is wrong.
Always remember that everything in Spring Integration are connected via channels.

Spring Boot with Apache Kafka: Messages not being read

I am currently setting up a Spring Boot application with Kafka listener.
I am trying to code only the consumer. For producer, I am manually sending message from the Kafka console for now.
I followed the example:
http://www.source4code.info/2016/09/spring-kafka-consumer-producer-example.html
I tried running this as a Spring Boot application but not able to see any messages being received. There are already some messages in my local topic of Kafka.
C:\software\kafka_2.11-0.10.1.0\kafka_2.11-0.10.1.0\kafka_2.11-0.10.1.0\bin\wind
ows>kafka-console-producer.bat --broker-list localhost:9092 --topic test
this is a message
testing again
My Spring Boot application is:
#EnableDiscoveryClient
#SpringBootApplication
public class KafkaApplication {
/**
* Run the application using Spring Boot and an embedded servlet engine.
*
* #param args
* Program arguments - ignored.
*/
public static void main(String[] args) {
// Tell server to look for registration.properties or registration.yml
System.setProperty("spring.config.name", "kafka-server");
SpringApplication.run(KafkaApplication.class, args);
}
}
And Kafka configuration is:
package kafka;
import org.apache.kafka.clients.consumer.ConsumerConfig;
import org.apache.kafka.common.serialization.IntegerDeserializer;
import org.apache.kafka.common.serialization.StringDeserializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.kafka.annotation.EnableKafka;
import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory;
import org.springframework.kafka.config.KafkaListenerContainerFactory;
import org.springframework.kafka.core.ConsumerFactory;
import org.springframework.kafka.core.DefaultKafkaConsumerFactory;
import org.springframework.kafka.listener.ConcurrentMessageListenerContainer;
import java.util.HashMap;
import java.util.Map;
#Configuration
#EnableKafka
public class KafkaConsumerConfig {
#Bean
KafkaListenerContainerFactory<ConcurrentMessageListenerContainer<String, String>> kafkaListenerContainerFactory() {
ConcurrentKafkaListenerContainerFactory<String, String> factory = new ConcurrentKafkaListenerContainerFactory();
factory.setConsumerFactory(consumerFactory());
//factory.setConcurrency(1);
//factory.getContainerProperties().setPollTimeout(3000);
return factory;
}
#Bean
public ConsumerFactory<String, String> consumerFactory() {
return new DefaultKafkaConsumerFactory(consumerConfigs());
}
#Bean
public Map<String, Object> consumerConfigs() {
Map<String, Object> propsMap = new HashMap();
propsMap.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092");
//propsMap.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, false);
//propsMap.put(ConsumerConfig.AUTO_COMMIT_INTERVAL_MS_CONFIG, "100");
//propsMap.put(ConsumerConfig.SESSION_TIMEOUT_MS_CONFIG, "15000");
propsMap.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, IntegerDeserializer.class);
propsMap.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
//propsMap.put(ConsumerConfig.GROUP_ID_CONFIG, "group1");
//propsMap.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
return propsMap;
}
#Bean
public Listener listener() {
return new Listener();
}
}
And Kafka listener is:
package kafka;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import java.util.logging.Logger;
public class Listener {
protected Logger logger = Logger.getLogger(Listener.class
.getName());
public CountDownLatch getCountDownLatch1() {
return countDownLatch1;
}
private CountDownLatch countDownLatch1 = new CountDownLatch(1);
#KafkaListener(topics = "test")
public void listen(ConsumerRecord<?, ?> record) {
logger.info("Received message: " + record);
System.out.println("Received message: " + record);
countDownLatch1.countDown();
}
}
I am trying this for the first time. Please let me know if I am doing anything wrong. Any help will be greatly appreciated.
You did not set ConsumerConfig.AUTO_OFFSET_RESET_CONFIG so the default is "latest". Set it to "earliest" so the consumer will receive messages already in the topic.
ConsumerConfig.AUTO_OFFSET_RESET_CONFIG takes effect only if the consumer group does not already have an offset for a topic partition. If you already ran the consumer with the "latest" setting, then running the consumer again with a different setting does not change the offset. The consumer must use a different group so Kafka will assign offsets for that group.
Observed that you dit comment out the consumer group.id property.
//propsMap.put(ConsumerConfig.GROUP_ID_CONFIG, "group1");
Let's see how is quoted in the Kafka official document:
A unique string that identifies the consumer group this consumer belongs to. This property is required if the consumer uses either the group management functionality by using subscribe(topic) or the Kafka-based offset management strategy.
Tried to uncomement that row and the consumer worked.
You will need to annotate your Listener class with either #Service or #Component so that Spring Boot can load the Kafka listener.
package kafka;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.springframework.kafka.annotation.KafkaListener;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import java.util.logging.Logger;
#Component
public class Listener {
protected Logger logger = Logger.getLogger(Listener.class
.getName());
public CountDownLatch getCountDownLatch1() {
return countDownLatch1;
}
private CountDownLatch countDownLatch1 = new CountDownLatch(1);
#KafkaListener(topics = "test")
public void listen(ConsumerRecord<?, ?> record) {
logger.info("Received message: " + record);
System.out.println("Received message: " + record);
countDownLatch1.countDown();
}
}
The above suggestions are good. If you have followed all of them but it did not work, please check if lazy loading is set to false for your application.
The lazy loading is false by default. However if your application had explicit setting like the one below,
spring.main.lazy-initialization=true
Please comment it or make it to false

Hystrix Dashboard Issue in Spring Boot

I am new to Hystrix Dashboard. I have written sample application with Hystrix.
I want to see the Hystrix chart (command metric stream). But I am getting the below error:
Circuit: Unable to connect to Command Metric Stream
Thread Pools: Loading...
I am using STS with Maven.
Below is the code used:
Simple server microservice application (Spring boot web running in port 8085)
package hello;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.RequestMapping;
#RestController
#SpringBootApplication
public class BookstoreApplication {
#RequestMapping(value = "/recommended")
public String readingList(){
return "Spring in Action (Manning), Cloud Native Java (O'Reilly), Learning Spring Boot (Packt)";
}
public static void main(String[] args) {
SpringApplication.run(BookstoreApplication.class, args);
}
}
Simple client microservice application (Spring boot web running in port 8095) I have included the dependency of Hystrix and Hystrix Dashboard along with Web, so all the Hystrix dependencies are in classpath
package hello;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;
import java.net.URI;
#Service
public class BookService {
private final RestTemplate restTemplate;
public BookService(RestTemplate rest) {
this.restTemplate = rest;
}
#HystrixCommand(fallbackMethod = "reliable")
public String readingList() {
URI uri = URI.create("http://localhost:8090/recommended");
return this.restTemplate.getForObject(uri, String.class);
}
public String reliable() {
return "Cloud Native Java (O'Reilly)";
}
}
package hello;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.web.client.RestTemplate;
#EnableHystrixDashboard
#EnableHystrix
#EnableCircuitBreaker
#RestController
#SpringBootApplication
public class ReadingApplication {
#Autowired
private BookService bookService;
#Bean
public RestTemplate rest(RestTemplateBuilder builder) {
return builder.build();
}
#RequestMapping("/to-read")
public String toRead() {
return bookService.readingList();
}
public static void main(String[] args) {
SpringApplication.run(ReadingApplication.class, args);
}
}
By running the above code, the hystrix is working fine, when the BooKStoreApplication is down, it is going to fallback method.
Both the urls are working fine.
Normal Case:
http://localhost:8085/recommended
Output: Spring in Action (Manning), Cloud Native Java (O'Reilly), Learning Spring Boot (Packt)
http://localhost:8095/to-read
Output: Spring in Action (Manning), Cloud Native Java (O'Reilly), Learning Spring Boot (Packt)
When BookStoreApplication is down (http://localhost:8085/recommended) accessing http://localhost:8095/to-read returns "Cloud Native Java (O'Reilly)" as expected.
But when I tried to invoke this url http://localhost:8095/hystrix, I am getting the Hystrix DashBoard Page and asking for the stream value.
I have tried given http://localhost:8095/ or http://localhost:8095/to-read, and clicked "Monitor Stream" and it is going to next page with error:
Circuit: Unable to connect to Command Metric Stream
Thread Pools: Loading...
I've experienced the same. The main problem was, that I didn't have the actuator dependency in my maven pom. So I could not get the hystrix stream.
Include the spring-boot-actuator.
Check if localhost:8085/health is running.
Try to enter localhost:8085/hystrix.stream to stream value in Hystrix Dashboard.
Execute the service few times -> the dashboard should show the monitored method/command.

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