Q: when messages(30,000+) flood in, the consumer server established too many TCP , even more than 10,000 .how to configer in spring to avoid that?!
listener:
sendMQ
the following is rabbitmq.xml
This stackoverflow question might help: How is concurrency in Spring AMQP Listener Container implemented?
Quick excerpt, see 'concurrency':
<rabbit:listener-container
connection-factory="myConnectionFactory"
acknowledge="none"
concurrency="10"
requeue-rejected="false">
<rabbit:listener ref="myListener" queues="myQueue"/>
</rabbit:listener-container>
I am not using the Spring XML configuration, but annotations, but this is what I have used to limit the amount of concurrent consumers:
#Bean
public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory() {
SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
factory.setConnectionFactory(connectionFactory());
// process each message one at a time
factory.setConcurrentConsumers(1);
factory.setMaxConcurrentConsumers(1);
return factory;
}
Related
I am designing a simple system where the flow is going to be like this:
Message Producer Microservice --> Active MQ --> Message Consumer Microservice --> Mongo DB
I need to design a queuing strategy in a way so that if MongoDB is down, I should not lose the message (because Message consumer will dequeue the message).
My consumer is written like this:
#JmsListener(destination = "Consumer.myconsumer.VirtualTopic.Tracking")
public void onReceiveFromQueueConsumer2(TrackingRequest trackingRequest) {
log.debug("Received tracking request from the queue by consumer 2");
log.debug(trackingRequest.toString());
}
How do you provide client acknowledgement?
You can use client acknowledge mode from your "Message Consumer Microservice." Since you're using a Spring JmsListener you can define the listener container using the containerFactory and then you can set the mode you want on your listener container using sessionAcknowledgeMode. See the Spring documentation for more details on what ack mode you might want to use here.
From the perspective of the ActiveMQ client you can configure redelivery semantics however you like in case of a failure. See the ActiveMQ documentation for more about that.
Alright, so I was able to solve this dilemma, here is what your config should be like (thanks to Justin for his valuable inputs):
#Bean
public ActiveMQConnectionFactory connectionFactory() {
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory();
connectionFactory.setBrokerURL(brokerUrl);
connectionFactory.setPassword(userName);
connectionFactory.setUserName(password);
connectionFactory.setTrustAllPackages(true);
connectionFactory.setRedeliveryPolicy(redeliveryPolicy());
return connectionFactory;
}
#Bean
public JmsTemplate jmsTemplate() {
JmsTemplate template = new JmsTemplate();
template.setConnectionFactory(connectionFactory());
return template;
}
#Bean
public DefaultJmsListenerContainerFactory jmsListenerContainerFactory() {
DefaultJmsListenerContainerFactory listenerCF = new DefaultJmsListenerContainerFactory();
listenerCF.setConnectionFactory(connectionFactory());
listenerCF.setSessionAcknowledgeMode(Session.AUTO_ACKNOWLEDGE);
listenerCF.setSessionTransacted(true);
return listenerCF;
}
#Bean
public RedeliveryPolicy redeliveryPolicy() {
RedeliveryPolicy redeliveryPolicy = new RedeliveryPolicy();
redeliveryPolicy.setRedeliveryDelay(600000L); //keep trying every 10 minutes
redeliveryPolicy.setMaximumRedeliveries(-1); //Keep trying till its successfully inserted
return redeliveryPolicy;
}
I am migrating a Spring Boot microservice that consumes data from 3 RabbitMQ queues on server A, saves it into Redis and finally produces messages into an exchange in a different RabbitMQ on server B so these messages can be consumed by another microservice. This flow is working fine but I would like to migrate it to Spring Cloud Stream using the RabbitMQ binder. All Spring AMQP configuration is customised in the properties file and no spring property is used to create connections, queues, bindings, etc...
My first idea was setting up two bindings in Spring Cloud Stream, one connected to server A (consumer) and the other connected to server B (producer), and migrate the existing code to a Processor but I discarded it because it seems connection names cannot be set yet if multiple binders are used and I need to add several bindings to consume from server A's queues and bindingRoutingKey property does not support a list of values (I know it can be done programmately as explained here).
So I decided to only refactor the part of code related to the producer to use Spring Cloud Stream over RabbitMQ so the same microservice should consume via Spring AMQP from server A (original code) and should produce into server B via Spring Cloud Stream.
The first issue I found was a NonUniqueBeanDefinitionException in Spring Cloud Stream because a org.springframework.messaging.handler.annotation.support.MessageHandlerMethodFactory bean was defined twice with handlerMethodFactory and integrationMessageHandlerMethodFactory names.
org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'org.springframework.messaging.handler.annotation.support.MessageHandlerMethodFactory' available: expected single matching bean but found 2: handlerMethodFactory,integrationMessageHandlerMethodFactory
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveNamedBean(DefaultListableBeanFactory.java:1144)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveBean(DefaultListableBeanFactory.java:411)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:344)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:337)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1123)
at org.springframework.cloud.stream.binding.StreamListenerAnnotationBeanPostProcessor.injectAndPostProcessDependencies(StreamListenerAnnotationBeanPostProcessor.java:317)
at org.springframework.cloud.stream.binding.StreamListenerAnnotationBeanPostProcessor.afterSingletonsInstantiated(StreamListenerAnnotationBeanPostProcessor.java:113)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:862)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:743)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:390)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:312)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1214)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1203)
It seems the former bean is created by Spring AMQP and the latter by Spring Cloud Stream so I created my own primary bean:
#Bean
#Primary
public MessageHandlerMethodFactory messageHandlerMethodFactory() {
return new DefaultMessageHandlerMethodFactory();
}
Now the application is able to start but the output channel is created by Spring Cloud Stream in server A instead of server B. It seems that Spring Cloud Stream configuration is using the connection created by Spring AMQP instead of using its own configuration.
The configuration of Spring AMQP is this:
#Bean
public SimpleRabbitListenerContainerFactory priceRabbitListenerContainerFactory(
ConnectionFactory consumerConnectionFactory) {
return
getSimpleRabbitListenerContainerFactory(
consumerConnectionFactory,
rabbitProperties.getConsumer().getListeners().get(LISTENER_A));
}
#Bean
public SimpleRabbitListenerContainerFactory maxbetRabbitListenerContainerFactory(
ConnectionFactory consumerConnectionFactory) {
return
getSimpleRabbitListenerContainerFactory(
consumerConnectionFactory,
rabbitProperties.getConsumer().getListeners().get(LISTENER_B));
}
#Bean
public ConnectionFactory consumerConnectionFactory() throws Exception {
return
new CachingConnectionFactory(
getRabbitConnectionFactoryBean(
rabbitProperties.getConsumer()
).getObject()
);
}
private SimpleRabbitListenerContainerFactory getSimpleRabbitListenerContainerFactory(
ConnectionFactory connectionFactory,
RabbitProperties.ListenerProperties listenerProperties) {
//return a SimpleRabbitListenerContainerFactory set up from external properties
}
/**
* Create the AMQ Admin.
*/
#Bean
public AmqpAdmin consumerAmqpAdmin(ConnectionFactory consumerConnectionFactory) {
return new RabbitAdmin(consumerConnectionFactory);
}
/**
* Create the map of available queues and declare them in the admin.
*/
#Bean
public Map<String, Queue> queues(AmqpAdmin consumerAmqpAdmin) {
return
rabbitProperties.getConsumer().getListeners().entrySet().stream()
.map(listenerEntry -> {
Queue queue =
QueueBuilder
.nonDurable(listenerEntry.getValue().getQueueName())
.autoDelete()
.build();
consumerAmqpAdmin.declareQueue(queue);
return new AbstractMap.SimpleEntry<>(listenerEntry.getKey(), queue);
}).collect(
Collectors.toMap(
AbstractMap.SimpleEntry::getKey,
AbstractMap.SimpleEntry::getValue
)
);
}
/**
* Create the map of available exchanges and declare them in the admin.
*/
#Bean
public Map<String, TopicExchange> exchanges(AmqpAdmin consumerAmqpAdmin) {
return
rabbitProperties.getConsumer().getListeners().entrySet().stream()
.map(listenerEntry -> {
TopicExchange exchange =
new TopicExchange(listenerEntry.getValue().getExchangeName());
consumerAmqpAdmin.declareExchange(exchange);
return new AbstractMap.SimpleEntry<>(listenerEntry.getKey(), exchange);
}).collect(
Collectors.toMap(
AbstractMap.SimpleEntry::getKey,
AbstractMap.SimpleEntry::getValue
)
);
}
/**
* Create the list of bindings and declare them in the admin.
*/
#Bean
public List<Binding> bindings(Map<String, Queue> queues, Map<String, TopicExchange> exchanges, AmqpAdmin consumerAmqpAdmin) {
return
rabbitProperties.getConsumer().getListeners().keySet().stream()
.map(listenerName -> {
Queue queue = queues.get(listenerName);
TopicExchange exchange = exchanges.get(listenerName);
return
rabbitProperties.getConsumer().getListeners().get(listenerName).getKeys().stream()
.map(bindingKey -> {
Binding binding = BindingBuilder.bind(queue).to(exchange).with(bindingKey);
consumerAmqpAdmin.declareBinding(binding);
return binding;
}).collect(Collectors.toList());
}).flatMap(Collection::stream)
.collect(Collectors.toList());
}
Message listeners are:
#RabbitListener(
queues="${consumer.listeners.LISTENER_A.queue-name}",
containerFactory = "priceRabbitListenerContainerFactory"
)
public void handleMessage(Message rawMessage, org.springframework.messaging.Message<ModelPayload> message) {
// call a service to process the message payload
}
#RabbitListener(
queues="${consumer.listeners.LISTENER_B.queue-name}",
containerFactory = "maxbetRabbitListenerContainerFactory"
)
public void handleMessage(Message rawMessage, org.springframework.messaging.Message<ModelPayload> message) {
// call a service to process the message payload
}
Properties:
#
# Server A config (Spring AMQP)
#
consumer.host=server-a
consumer.username=
consumer.password=
consumer.port=5671
consumer.ssl.enabled=true
consumer.ssl.algorithm=TLSv1.2
consumer.ssl.validate-server-certificate=false
consumer.connection-name=local:microservice-1
consumer.thread-factory.thread-group-name=server-a-consumer
consumer.thread-factory.thread-name-prefix=server-a-consumer-
# LISTENER_A configuration
consumer.listeners.LISTENER_A.queue-name=local.listenerA
consumer.listeners.LISTENER_A.exchange-name=exchangeA
consumer.listeners.LISTENER_A.keys[0]=*.1.*.*
consumer.listeners.LISTENER_A.keys[1]=*.3.*.*
consumer.listeners.LISTENER_A.keys[2]=*.6.*.*
consumer.listeners.LISTENER_A.keys[3]=*.8.*.*
consumer.listeners.LISTENER_A.keys[4]=*.9.*.*
consumer.listeners.LISTENER_A.initial-concurrency=5
consumer.listeners.LISTENER_A.maximum-concurrency=20
consumer.listeners.LISTENER_A.thread-name-prefix=listenerA-consumer-
# LISTENER_B configuration
consumer.listeners.LISTENER_B.queue-name=local.listenerB
consumer.listeners.LISTENER_B.exchange-name=exchangeB
consumer.listeners.LISTENER_B.keys[0]=*.1.*
consumer.listeners.LISTENER_B.keys[1]=*.3.*
consumer.listeners.LISTENER_B.keys[2]=*.6.*
consumer.listeners.LISTENER_B.initial-concurrency=5
consumer.listeners.LISTENER_B.maximum-concurrency=20
consumer.listeners.LISTENER_B.thread-name-prefix=listenerB-consumer-
#
# Server B config (Spring Cloud Stream)
#
spring.rabbitmq.host=server-b
spring.rabbitmq.port=5672
spring.rabbitmq.username=
spring.rabbitmq.password=
spring.cloud.stream.bindings.outbound.destination=microservice-out
spring.cloud.stream.bindings.outbound.group=default
spring.cloud.stream.rabbit.binder.connection-name-prefix=local:microservice
So my question is: is it possible to use in the same Spring Boot application code that consumes data from RabbitMQ via Spring AMQP and produces messages into a different server via Spring Cloud Stream RabbitMQ? If it is, could somebody tell me what I am doing wrong, please?
Spring AMQP version is the one provided by Boot version 2.1.7 (2.1.8-RELEASE) and Spring Cloud Stream version is the one provided by Spring Cloud train Greenwich.SR2 (2.1.3.RELEASE).
EDIT
I was able to make it work configuring the binder via multiple configuration properties instead of the default one. So with this configuration it works:
#
# Server B config (Spring Cloud Stream)
#
spring.cloud.stream.binders.transport-layer.type=rabbit
spring.cloud.stream.binders.transport-layer.environment.spring.rabbitmq.host=server-b
spring.cloud.stream.binders.transport-layer.environment.spring.rabbitmq.port=5672
spring.cloud.stream.binders.transport-layer.environment.spring.rabbitmq.username=
spring.cloud.stream.binders.transport-layer.environment.spring.rabbitmq.password=
spring.cloud.stream.bindings.stream-output.destination=microservice-out
spring.cloud.stream.bindings.stream-output.group=default
Unfortunately it is not possible to set the connection-name yet in multiple binders configuration: A custom ConnectionNameStrategy is ignored if there is a custom binder configuration.
Anyway, I still do not understand why it seems the contexts are "mixed" when using Spring AMQP and Spring Cloud Stream RabbitMQ. It is still necessary to set a primary MessageHandlerMethodFactory bean in order the implementation to work.
EDIT
I found out that the NoUniqueBeanDefinitionException was caused because the microservice itself was creating a ConditionalGenericConverter to be used by Spring AMQP part to deserialize messages from Server A.
I removed it and added some MessageConverters instead. Now the problem is solved and the #Primary bean is no longer necessary.
Unrelated, but
consumerAmqpAdmin.declareQueue(queue);
You should never communicate with the broker within a #Bean definition; it is too early in application context lifecycle. It might work but YMMV; also if the broker is not available it will prevent your app from starting.
It's better to define beans of type Declarables containing the lists of queues, channels, bindings and the Admin will automatically declare them when the connection is first opened successfully. See the reference manual.
I have never seen the MessageHandlerFactory problem; Spring AMQP declares no such bean. If you can provide a small sample app that exhibits the behavior, that would be useful.
I'll see if I can find a work around to the connection name issue.
EDIT
I found a work around to the connection name issue; it involves a bit of reflection but it works. I suggest you open a new feature request against the binder to request a mechanism to set the connection name strategy when using multiple binders.
Anyway; here's the work around...
#SpringBootApplication
#EnableBinding(Processor.class)
public class So57725710Application {
public static void main(String[] args) {
SpringApplication.run(So57725710Application.class, args);
}
#Bean
public Object connectionNameConfigurer(BinderFactory binderFactory) throws Exception {
setConnectionName(binderFactory, "rabbit1", "myAppProducerSide");
setConnectionName(binderFactory, "rabbit2", "myAppConsumerSide");
return null;
}
private void setConnectionName(BinderFactory binderFactory, String binderName,
String conName) throws Exception {
binderFactory.getBinder(binderName, MessageChannel.class); // force creation
#SuppressWarnings("unchecked")
Map<String, Map.Entry<Binder<?, ?, ?>, ApplicationContext>> binders =
(Map<String, Entry<Binder<?, ?, ?>, ApplicationContext>>) new DirectFieldAccessor(binderFactory)
.getPropertyValue("binderInstanceCache");
binders.get(binderName)
.getValue()
.getBean(CachingConnectionFactory.class).setConnectionNameStrategy(queue -> conName);
}
#StreamListener(Processor.INPUT)
#SendTo(Processor.OUTPUT)
public String listen(String in) {
System.out.println(in);
return in.toUpperCase();
}
}
and
spring.cloud.stream.binders.rabbit1.type=rabbit
spring.cloud.stream.binders.rabbit1.environment.spring.rabbitmq.host=localhost
spring.cloud.stream.binders.rabbit1.environment.spring.rabbitmq.port=5672
spring.cloud.stream.binders.rabbit1.environment.spring.rabbitmq.username=guest
spring.cloud.stream.binders.rabbit1.environment.spring.rabbitmq.password=guest
spring.cloud.stream.bindings.output.destination=outDest
spring.cloud.stream.bindings.output.producer.required-groups=outQueue
spring.cloud.stream.bindings.output.binder=rabbit1
spring.cloud.stream.binders.rabbit2.type=rabbit
spring.cloud.stream.binders.rabbit2.environment.spring.rabbitmq.host=localhost
spring.cloud.stream.binders.rabbit2.environment.spring.rabbitmq.port=5672
spring.cloud.stream.binders.rabbit2.environment.spring.rabbitmq.username=guest
spring.cloud.stream.binders.rabbit2.environment.spring.rabbitmq.password=guest
spring.cloud.stream.bindings.input.destination=inDest
spring.cloud.stream.bindings.input.group=default
spring.cloud.stream.bindings.input.binder=rabbit2
and
I am using SimpleRabbitListenerFactory and am trying to dynamically decrease/increase the concurrentConsumers which am not able to achieve. Can anybody help me with this. Thank you
Code is as follows:
SimpleRabbitListenerContainerFactory factory;
#Bean
public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory()
{
factory=new SimpleRabbitListenerContainerFactory();
factory.setConnectionFactory(this.connectionFactory);
changeConsumers(2);
return factory;
}
public void changeConsumers(int minConsumers)
{
factory.setConcurrentConsumers(2);
}
***In another package***
if(messageCount>6000)
changeConsumers(5);
When message count is morethan 6000 it is going into the changeCOnsumers method but consumers are not changing to 5.
The factory is used during application initialization to create listener container objects; changing its properties later won't change the properties on containers it has already created.
You have to change the property on the containers themselves.
You can access the containers using the RabbitListenerEndpointRegistry bean; call getListenerContainers and iterate over them (or get an individual container using it's id).
Cast the MessageListenerContainer to SimpleMessageListenerContainer to change its properties.
I'm using #RabbitListener annotation and SimpleRabbitListenerContainerFactory bean for parallel execution of rabbitmq messages and setting the min and max concurrent consumers in the following way :
#Bean
public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory() {
SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
factory.setConnectionFactory(connectionFactory());
factory.setConcurrentConsumers(MIN_RABBIT_CONCURRENT_CONSUMERS);
factory.setMaxConcurrentConsumers(MAX_RABBIT_CONCURRENT_CONSUMERS);
factory.setConsecutiveActiveTrigger(1);
factory.setAcknowledgeMode(AcknowledgeMode.MANUAL);
return factory;
}
The min limit is 3 and the max limit is 10. With this configuration, only 3 messages are getting executed parallelly, even though there are 12 messages in the queue.
Please tell me what is wrong with the config?
You can create max concurrent consumers using rabbitMQ annotation
#RabbitListener(queues = "your-queue-name", concurrency = "4")
public void customCheck(Object requestObject) {
// process
}
With the default configuration, a new consumer will be added every 10 seconds if the other consumers are still busy.
The algorithm (and properties to affect it) is described here.
Im having a SpringBoot application which consume my custom serializable message from ActiveMQ Queue. So far it is worked, however, the consume rate is very poor, only 1 - 20 msg/sec.
#JmsListener(destination = "${channel.consumer.destination}", concurrency="${channel.consumer.maxConcurrency}")
public void receive(IMessage message) {
processor.process(message);
}
The above is my channel consumer class's snippet, it has a processor instance (injected, autowired and inside it i have #Async service, so i can assume the main thread will be released as soon as message entering #Async method) and also it uses springboot activemq default conn factory which i set from application properties
# ACTIVEMQ (ActiveMQProperties)
spring.activemq.broker-url= tcp://localhost:61616?keepAlive=true
spring.activemq.in-memory=true
spring.activemq.pool.enabled=true
spring.activemq.pool.expiry-timeout=1
spring.activemq.pool.idle-timeout=30000
spring.activemq.pool.max-connections=50
Few things worth to inform:
1. I run everything (Eclipse, ActiveMQ, MYSQL) in my local laptop
2. Before this, i also tried using custom connection factory (default AMQ, pooling, and caching) equipped with custom threadpool task executor, but still getting same result. Below is a snapshot performance capture which i took and updating every 1 sec
3. I also notive in JVM Monitor that the used heap keep incrementing
I want to know:
1. Is there something wrong/missing from my steps?I can't even touch hundreds in my message rate
2. Annotated #JmsListener method will execute process async or sync?
3. If possible and supported, how to use traditional sync receive() with SpringBoot properly and ellegantly?
Thank You
I'm just checking something similar. I have defined DefaultJmsListenerContainerFactory in my JMSConfiguration class (Spring configuration) like this:
#Bean
public DefaultJmsListenerContainerFactory jmsListenerContainerFactory(CachingConnectionFactory connectionFactory) {
// settings made based on https://bsnyderblog.blogspot.sk/2010/05/tuning-jms-message-consumption-in.html
DefaultJmsListenerContainerFactory factory = new DefaultJmsListenerContainerFactory(){
#Override
protected void initializeContainer(DefaultMessageListenerContainer container) {
super.initializeContainer(container);
container.setIdleConsumerLimit(5);
container.setIdleTaskExecutionLimit(10);
}
};
factory.setConnectionFactory(connectionFactory);
factory.setConcurrency("10-50");
factory.setCacheLevel(CACHE_CONSUMER);
factory.setReceiveTimeout(5000L);
factory.setDestinationResolver(new BeanFactoryDestinationResolver(beanFactory));
return factory;
}
As you can see, I took those values from https://bsnyderblog.blogspot.sk/2010/05/tuning-jms-message-consumption-in.html. It's from 2010 but I could not find anything newer / better so far.
I have also defined Spring's CachingConnectionFactory Bean as a ConnectionFactory:
#Bean
public CachingConnectionFactory buildCachingConnectionFactory(#Value("${activemq.url}") String brokerUrl) {
// settings based on https://bsnyderblog.blogspot.sk/2010/02/using-spring-jmstemplate-to-send-jms.html
ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory();
activeMQConnectionFactory.setBrokerURL(brokerUrl);
CachingConnectionFactory cachingConnectionFactory = new CachingConnectionFactory(activeMQConnectionFactory);
cachingConnectionFactory.setSessionCacheSize(10);
return cachingConnectionFactory;
}
This setting will help JmsTemplate with sending.
So my answer to you is set the values of your connection pool like described in the link. Also I guess you can delete spring.activemq.in-memory=true because (based on documentation) in case you specify custom broker URL, "in-memory" property is ignored.
Let me know if this helped.
G.