I have camel and rabbitmq configured like the following and it is working. I am looking to improve the config setup.
pom.xml
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-rabbitmq-starter</artifactId>
<version>2.19.1</version>
</dependency>
application.yml
spring:
rabbitmq:
host: rabbithost-url
port: 5672
username: my-user
password: my-password
config bean
#Configuration
public class CamelConfig {
#Resource private Environment env;
#Bean
public ConnectionFactory rabbitConnectionFactory(){
ConnectionFactory connectionFactory = new ConnectionFactory();
connectionFactory.setHost(env.getProperty("spring.rabbitmq.host"));
connectionFactory.setPort(Integer.valueOf(env.getProperty("spring.rabbitmq.port")));
connectionFactory.setAutomaticRecoveryEnabled(true);
// more config options here etc
return connectionFactory;
}
}
Route Example
#Component
public class MyRoute extends RouteBuilder {
#Override
public void configure() throws Exception {
from("direct:startQueuePoint")
.id("idOfQueueHere")
.to("rabbitmq://rabbithost-url:5672/TEST-QUEUE.exchange?queue=TEST-QUEUE.queue&autoDelete=false&connectionFactory=#rabbitConnectionFactory")
.end();
}
}
Would like to improve the following? Or at least see if its possible?
1) How do I leverage spring boot autowiring. I feel like im duplicating beans by added the custom CamelConfig > rabbitConnectionFactory? Its not using the RabbitAutoconfiguration?
2) When I am using the connection factory I am referencing the rabbitmq-url and port twice? I am adding it in the rabbitConnectionFactory bean object and in the camel url? e.g.
.to("rabbitmq://rabbithost-url:5672/ ..etc.. &connectionFactory=#rabbitConnectionFactory")
can I not just reference it once in the connection factory? tried the following without the host as its included in connectionFactory but it did not work.
.to("rabbitmq://TEST-QUEUE.exchange?queue=TEST-QUEUE.queue&autoDelete=false&connectionFactory=#rabbitConnectionFactory")
The 1st working example I am using is based off this.
camel.apache.org/rabbitmq example (see Custom connection factory )
Found from looking at the newer docs on github.
Notice that now no url needed in the start of the route.
.to(rabbitmq:exchangeName?options
Full camel route example below
.to(rabbitmq:exchangeName?queueName&exchangeType=direct&connectionFactory=#rabbitConnectionFactory&autoDelete=false
Here is url:
https://github.com/apache/camel/blob/master/components/camel-rabbitmq/src/main/docs/rabbitmq-component.adoc
Related
I am trying to implement Hibernate second level caching in a Spring boot project using Redisson.
I have followed this blog as a reference
https://pavankjadda.medium.com/implement-hibernate-2nd-level-cache-with-redis-spring-boot-and-spring-data-jpa-7cdbf5632883
Also i am trying to initialize the RedissionClient programmatically and not through declaratively /through a config file
Created a spring bean to be initialized which should create the RedissonClient instance.
#Configuration
#Lazy(value = false)
public class RedissonConfig {
#Bean
public RedissonClient redissionClient() {
Config config = new Config();
config.useSingleServer().setAddress("redis://127.0.0.1:6379");
return Redisson.create(config);
}
}
However this bean is never intialized and i get the following error while application startup.
Caused by: org.hibernate.cache.CacheException: Unable to locate Redisson configuration
at org.redisson.hibernate.RedissonRegionFactory.createRedissonClient(RedissonRegionFactory.java:107) ~[redisson-hibernate-53-3.12.1.jar:3.12.1]
at org.redisson.hibernate.RedissonRegionFactory.prepareForUse(RedissonRegionFactory.java:83) ~[redisson-hibernate-53-3.12.1.jar:3.12.1]
It seems Spring boot Hibernate still trying to load the Redisson config through a config file.
is it possible to load the Redission config in spring boot programmatically ?
Best Regards,
Saurav
I just did exactly this, here is how:
you need a custom RegionFactory that is similar to the JndiRedissonRegionFactory but gets its RedissonClient injected somehow.
an instance of this Class, fully configured, is put into the hibernate-properties map. Hibernates internal code is flexible: if the value of hibernate.cache.region.factory_class is a string it is treated as a FQDN. If it is an instance of Class<?>, it will be instantiated. If it is an Object, it will be used.
Spring offers a rather simple way to customize hibernate properties with a bean:
#AutoConfiguration(after = RedissonAutoConfiguration.class, before = JpaAutoConfiguration.class)
#ConditionalOnProperty("spring.jpa.properties.hibernate.cache.use_second_level_cache")
public class HibernateCacheAutoConfiguration {
#Bean
public HibernatePropertiesCustomizer setRegionFactory(RedissonClient redisson) {
return hibernateProperties -> hibernateProperties.put(AvailableSettings.CACHE_REGION_FACTORY, new SpringBootRedissonRegionFactory(redisson));
}
}
My RegionFactory is really simple:
#AllArgsConstructor
public class SpringBootRedissonRegionFactory extends RedissonRegionFactory {
private RedissonClient redissonClient;
#Override
protected RedissonClient createRedissonClient(Map properties) {
return redissonClient;
}
#Override
protected void releaseFromUse() {
}
}
I used the redisson-starter to get a RedissonClient, hence the reference to RedissonAutoConfiguration, but you could just create an instance by hand.
It is possible, but then you need to provide a custom implementation of RegionFactory to Hibernate, which can extends RedissonRegionFactory but uses your own client instance.
I would like to config the max-delivery-attempts of dead letter as described in the manual.
I tried Spring Boot with embedded ActiveMQ Artemis JMS server, but cannot figure out how to set max-delivery-attempts value.
After debugging the Configuration instance I finally find the method. Here's the code:
#Configuration
public class RedeliveryConfiguration implements ArtemisConfigurationCustomizer {
#Override
public void customize(org.apache.activemq.artemis.core.config.Configuration configuration) {
Map<String, AddressSettings> addressesSettings = configuration.getAddressesSettings();
// # is the catch all address or default address
addressesSettings.get("#").setMaxDeliveryAttempts(2);
}
}
I have the java configuration for the Spring Data Elaticsearch(using Transport Client) and ESTemplate.
Here some except:
#Configuration
#EnableElasticsearchRepositories(basePackages = "subpackage-in-this-project")
#PropertySource("file:path-to-file")
public class ESConfig {
#Bean
ElasticsearchTemplate elasticsearchTemplate(Client client) {
return new ElasticsearchTemplate(client);
}
#Bean
Client client() {
// configuration of the ES client
}
}
And I have a config that extends the one above in the different project.
#Configuration
#ComponentScan("package-prefix-that-matches-packages-in-both-projects")
#EnableElasticsearchRepositories(basePackages = "subpackage-in-this-project")
#PropertySource("file:same-path-to-file-as-in-the-config-above")
public class ExtendedESConfig extends ESConfig {
#Value("index-name")
private String indexName;
#Bean
public String indexName() {
return indexName;
}
}
Upon executing a third Spring Boot application, which uses the dependency on the project with ExtendedESConfig, I get this and I can't quite understand why does it happen, started to happen after upgrading to 2.2.9.RELEASE from 2.0.5.RELEASE Spring Boot version.
***************************
APPLICATION FAILED TO START
***************************
Description:
The bean 'elasticsearchTemplate', defined in class path resource [my/package/ESConfig.class], could not be registered. A bean with that name has already been defined in class path resource [my/other/package/ExtendedESConfig.class] and overriding is disabled.
Action:
Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true
2020-08-30 16:49:46 ERROR [main] org.springframework.boot.diagnostics.LoggingFailureAnalysisReporter:40 -
Important remark from my comment:
... sadly, I am not the one who wrote this ES config and built the whole infrastructure around it. ...
At the time of this question, I don't own ExtendedESConfig nor can change it.
Or you can add the next property to your application.properties :
spring.main.allow-bean-definition-overriding=true
The default behaviour of overriding bean has been disabled in Spring Boot 2.1. Spring Boot 2.1 Release Notes
Since you don't own / or don't want to modify both configuration classes. You can exclude parent configuration form your SpringBootApplication class using #ComponentScan
#SpringBootApplication
#ComponentScan(excludeFilters =
{#ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, classes = ESConfig.class)})
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
I had a similar problem with my custom springSecurityFilterChain method, in my #Configuration class. The application told me it couldn't create a Bean named springSecurityFilterChain since it was defined elsewhere (in my case, in a Spring Security package, which, as is your case, I couldn't modify).
I found the solution here and it amounted to simply changing my custom method's name; I chose customFilterChain. So it went from
#Bean
public SecurityFilterChain springSecurityFilterChain(HttpSecurity http) throws Exception {
return http
.csrf().disable()
// etc
}
to:
#Bean
public SecurityFilterChain customFilterChain(HttpSecurity http) throws Exception {
return http
.csrf().disable()
// etc
}
Amazingly it worked. Like the article says, Spring builds the bean using the method's name by default. Hope it helps.
find in your modul: resources/application.properties and write:
spring.main.allow-bean-definition-overriding=true
it help you, you need to enable the beans override mechanism.
I have a Spring Boot (batch-oriented) application that uses a datasource in order to finalize a batch job and write stuff to the database.
I have the datasource(s) defined inside the application.yml like:
spring:
datasource:
url: jdbc:h2:mem:JavaSpringBootBatch
username: sa
password:
profiles: # default, development, production
active: default, development
---
spring:
h2:
# ...config/settings here
profiles: development
---
spring:
datasource:
# ...datasource config here
profiles: production
The issue is when I try to inject the datasource into one of the Spring config files:
#Configuration
public class PlayerBatchConfig {
...
#Bean
public ItemWriter<Player> writer(final DataSource dataSource) {
final JdbcBatchItemWriter<Player> jdbcItemWriter = new JdbcBatchItemWriter<>();
...
jdbcItemWriter.setDataSource(dataSource);
jdbcItemWriter.setSql(sql.toString());
return jdbcItemWriter;
}
}
...it tells me that:
Could not autowire. There is more than one bean of 'DataSource' type.
Beans:
dataSource (DataSourceConfiguration.class)
dataSource (EmbeddedDataSourceConfiguration.class)
I also tried to inject the datasource like:
#Configuration
public class PlayerBatchConfig {
#Bean
#ConfigurationProperties(prefix = "datasource")
public DataSource dataSource() {
return DataSourceBuilder.create().build();
}
...
}
...but no luck :( , although the issue with the two datasources goes away eventually.
Any clues how to "circumvent" that?
Since you have 2 datasources you need the annotate them with the #Qualifier the datasources bean and when you use them as well. Spring is telling you it doesn't know which one you want to use.
The DataSource which you want to use annotate it with #Primary, refer spring-boot documentation here for further info. Along with #Primary you might also need to use #Qualifier for controlling the bean injection.
I have been trying to set up a Spring Cloud Config Server/Client. I have been following a few different examples (1, 2). I have the client and server set up correctly and can successfully query localhost:8888/localhost:8080 to see the values in JSON format.
My question is whether Spring Boot will automatically detect these properties provided by Spring Cloud Config Server. For now I am just attempting to connect to a RabbitMQ instance on startup but have had no success despite not having any errors. It does not connect to Rabbit or create the queues/exchanges.
It works when I have an application.properties file locally with the following properties but I wish to get these setting through Spring Cloud Config from a GitHub repository.
spring.rabbitmq.host=178.61.47.---
spring.rabbitmq.port=5672
spring.rabbitmq.username=mqtt
spring.rabbitmq.password=mqtt
I have looked through the questions here/issues on GitHub but can't see anything relating to this.
Code for client class is below:
#EnableAutoConfiguration
#ComponentScan
#SpringBootApplication
public class ConfigRabbitApplication {
final static String queueName = "arduino-weather-queue";
#Autowired
RabbitTemplate rabbitTemplate;
#Bean
Queue queue() {
return new Queue(queueName, true);
}
#Bean
Binding binding(Queue queue, TopicExchange exchange) {
return BindingBuilder.bind(queue).to(exchange).with("arduino-weather");
}
#Bean
TopicExchange exchange() {
return new TopicExchange("arduino-iot-exchange", true, false);
}
public static void main(String[] args) {
SpringApplication.run(ConfigRabbitApplication.class, args);
}
}
No, spring boot client is not aware that you want to fetch configuration from config-server. That is probably loaded when specific class in on a classpath, thats why you have to add org.springframework.cloud:spring-cloud-starter-config dependency. Its well described here: http://cloud.spring.io/spring-cloud-config/spring-cloud-config.html#_client_side_usage
In case config-server is not on localhost:8888 you will also have to add:
spring.cloud.config.uri: http://myconfigserver.com
to your bootstrap.yml file ( its same as application.yml, just loaded earlier ).