I have this project where I'm trying to connect to different DB types based on configuration.
I have it working for Mongo and MySQL and switch by loading Beans by using #ConditionalOnProperty(name = "settings.data.source", havingValue = "mongodb")
Now I want to add Cassandra, but once I added the following dependency to my pom, it starts trying to connect to Cassandra nodes on localhost.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-cassandra</artifactId>
</dependency>
I want to have more control over when the Cassandra resources are loaded.
It doesn't try to connect automatically when I added Mongo dependencies:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
Anyone familiar with this behavior? How can I control this? I don't always need a Cassandra connection...
You may disable Cassandra auto configuration,
#SpringBootApplication
#EnableAutoConfiguration(exclude={CassandraDataAutoConfiguration.class})
Yep, That's it, thanks!
#EnableAutoConfiguration(exclude={
CassandraDataAutoConfiguration.class,
MongoDataAutoConfiguration.class,
MongoRepositoriesAutoConfiguration.class,
MongoAutoConfiguration.class})
For both my #SpringBootApplication and #Configuration classes.
Related
I have a Spring boot application where I am sending custom metrics generated within the service to Prometheus via Pushgateway.
I am using Prometheus Pushgateway with Micrometer, mainly based on this tutorial: https://luramarchanjo.tech/2020/01/05/spring-boot-2.2-and-prometheus-pushgateway-with-micrometer.html
I have following dependencies in my pom.xml
<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-core</artifactId>
</dependency>
<dependency>
<groupId>io.micrometer</groupId>
<artifactId>micrometer-registry-prometheus</artifactId>
</dependency>
<dependency>
<groupId>io.prometheus</groupId>
<artifactId>simpleclient_pushgateway</artifactId>
<version>0.16.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
And sending custom metrics with:
Counter counter = Counter.builder("sb_console_test_counter").register(meterRegistry);
counter.increment();
It is working fine and I can view the custom metrics generated by the application however in addition to this I am seeing application specific metrics generated by Spring boot e.g.
tomcat_sessions_active_current_sessions
tomcat_sessions_active_max_sessions
etc.
I only want to capture the custom metrics generated by my code and not any other generic metrics, how can I stop sending this?
When you add the dependency spring-boot-starter-actuator you will get a lot of metrics out of the box from various configurations such as JvmMetricsAutoConfiguration and TomcatMetricsAutoConfiguration.
To filter those out, you could add a deny filter in your Micrometer config, and only allow your custom metric meters to be registered.
Example using a deny filter:
#Bean
public MeterRegistryCustomizer<MeterRegistry> metricsRegistryConfig() {
return registry -> registry.config()
.meterFilter(MeterFilter.deny(id -> !id.getName().startsWith("sb_console")));
}
The above will deny any metrics not starting with sb_console.
See this link for more info about the meter filters
I believe you can just add this:
management.metrics.export.defaults.enabled=false
to your application.properties. I see this in some of my code. I'm not set up to try it right now, but that's why we have it there.
If you want to add back some of the built in metrics, you can then add lines like this:
management.metrics.export.<groupname>.enabled=true
I am trying to setup a scheduler using Camel and Quartz2 and my goal is to read messages from queue only in a specific time period.I am getting the following error on start of the server.
org.apache.camel.spring.boot.CamelSpringBootInitializationException:
org.apache.camel.FailedToCreateRouteException: Failed to create route
route1:
Route(route1)[[From[quartz2://simpleTimer?cron=0/1+0+13-15+?...
because of Failed to resolve endpoint:
quartz2://simpleTimer?cron=0%2F1+0+13-15+%3F+*+MON-FRI due to: No
component found with scheme: quartz2
This is the pom entry
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-quartz2</artifactId>
<version>2.19.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-spring-boot-dependencies</artifactId>
<version>2.19.2</version>
</dependency>
code snippet in routes
from("quartz2://simpleTimer?cron=0/1+0+13-14+?+*+MON-FRI")
.log("Reading msgs")
.from("some queue")
.bean("myBean")
Also tried with this
from("quartz2://testGroup/someName?cron=0/1+0+13-14+?+*+MON-FRI").
I made multiple attempts in fixing the issue but failed, can anyone help me in fixing this?
Can I use simpleTimer along with Cron settings or Is there any other approach?
any suggestions/help in this regards would be highly appreciated.
The error indicates you have not added the dependency in maven to camel-quartz2 component.
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-quartz2</artifactId>
<version>x.x.x</version>
<!-- use the same version as your Camel core version -->
</dependency>
The problem is that you put 2 from in the same route. Each route has only one from.
When you read from a queue, for example with jms component, you get directly the messages as soon as they arrive. So quarz component is not needed.
Which component are you using for reading from a queue? Probably this component has more options that they can help you!
This got resolved when I created a Bean instance of QuartzComponent in routes file.Also, we can have multiple "from" in the routes definition.
I want to use spring projection in my project. I am doing exactly as mentioned at this url http://docs.spring.io/spring-data/jpa/docs/current/reference/html/#projections
interface NoAddresses {
String getFirstName();
String getLastName();
}
The only difference is my interface is public. and is not in the same package as the repository. Is that a requirement?
Still I see the whole entities are being returned, instead of just the projected columns.
I have
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.10.2.RELEASE</version>
</dependency>
Doesn't work. Do i need to add some dependency to make the projection work? I am not using spring-boot but just the spring-data stuff in my project, running on tomcat server.
thanks
Chahat
i have simple application using Spring Boot. I wanted allow method caching with JSR107 - JCache. So with help of tutorial i put together this code :
#CacheResult(cacheName = "testpoc")
public Country getCountry(Integer id){
System.out.println("---> Loading country with code '" + id + "'");
return new Country(id, "X", "Title");
}
with this POM file
...
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.4.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
<version>1.4.0.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.cache</groupId>
<artifactId>cache-api</artifactId>
<version>1.0.0</version>
</dependency>
</dependencies>
...
(dependency 'spring-boot-starter-web' is there for simple REST service which call getCountry method)
Everything works like documentations says - method is invoked only once.
Now i wanted to try it on WildFly 10 application server
I have modified pom file :
excluded tomcat
exluded spring-boot-starter-cache
added infinispan-jcache (because i want to use cache configured / managed by wildfly in standalone/domain.xml)
Check pom file here on pastebin.
Problem is, that i am receiving following error :
Cannot find cache named 'java:jboss/infinispan/app-cache'
(i have tried to use both JNDI assigned and name to infinispan cache configured in wildfly).
Following code created Cache object (so i can used it) :
CacheManager cacheManager = Caching.getCachingProvider().getCacheManager();
Cache<String, String> cache = cacheManager.createCache("testpoc", new MutableConfiguration<String, String>());
Question :
It is possible to use JCache method caching on WildFly 10 using Infinispan managed by WildFly ?
Or Infinispan should be used for method caching like JCache, hence JCache has "more functionality" than Infinispan.
Thank you very much
PS :It is not problem for me to put whole code on github and post link - it is few lines of code ...
There are a couple of problems with your approach so let me go through them in steps.
At first you need to use proper Infinispan setup. Infinispan bits shipped with WF should be considered as internal or private. In order to use Infinispan in your app properly - either add org.infinispan:infinispan-embedded to your deployment or install Infinispan Wildfly modules. You can find installation guide here (it's a bit outdated but still, the procedure is exactly the same - unpack modules into WF and use Dependencies MANIFEST.MF entry).
Once you have successfully installed Infinispan (or added it to your app), you need to consider whether you want to use Spring Cache or JCache. If you're only interested in using annotations - I would recommend the former since it's much easier to setup (all you need to do is to add #EnableCaching to one of your configurations). Finally with Spring Cache you will create an Infinispan CacheManager bean. An example can be found here.
Final note - if you still need to use JCache - use this manual to setup Caching Provider.
i am working on Spring Data Neo4j and use Cypher-Language for some Queries. Works fine so long, but delete a Node don't work.
For Example:
#Query("start u=node(5) delete u")
void deleteNode();
i use the dependencies
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-cypher</artifactId>
<version>1.6.2</version>
</dependency>
<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j-kernel</artifactId>
<version>1.6.2</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-neo4j</artifactId>
<version>2.0.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-neo4j-rest</artifactId>
<version>2.0.1.RELEASE</version>
</dependency>
i cannot use version 1.7.2 of Cypher because it conflict with spring data neo4j and the kernel 1.6.
Can anybody help me?
i don't want to delete a Node with
repository.delete(5);
Because i also want to delete Relationships and any more.
Thx!
I think you should delete the relationship with the node you want to delete.
#Query("start u=node(5) delete u")
If you want to delete a node ,you should confirm the node haven't relationship with other node.
Please have a try with following codes:
#Query("start u=node(5) match u-[r]-() delete u,r")
Interesting idea, didn't try that yet b/c SDN still officially points to Neo4j 1.7 but that will change soon.
Why can't you update to SDN 2.1.RC2 ?
SDN 2.0.1 doesn't work with Neo4j 1.8 as there were API changes in Neo4j.
You will need to add #Transactional to the method as well.