I have a question, maybe simple, but I can not find out the solution.
I am using spring boot and added some annotation to the code like this:
@EnableEurekaClient
@SpringBootApplication
@EnableCaching
public class MyApplication {
public static void main(String[] args) {
SpringApplication.run(MyApplication.class, args);
}
}
But in some other environment, for example, in production environment, we want to remove EurekaClient, but I do not want to manually remove it manually for each environment, instead, I want to use environment variable or command line parameter to control the behavior. I suppose to do this way:
@EnableEurekaClient(Enabled = {EnableEureka})
@SpringBootApplication
@EnableCaching
public class MyApplication {
public static void main(String[] args) {
SpringApplication.run(MyApplication.class, args);
}
}
Then I can easily start this application without touching the code.
Can anyone tell me if this is possible? If so, how can I do it?
Thanks
If you find that specific auto-configure classes are being applied that you don't want, you can use the exclude attribute of @EnableAutoConfiguration to disable them. If the class is not on the classpath, you can use the excludeName attribute of the annotation and specify the fully qualified name instead.
@EnableAutoConfiguration: It auto-configures the bean that is present in the classpath and configures it to run the methods.
Annotations are turned off by-default by Spring Framework. In order to turn it on we have to provide a entry in Spring Configuration file. Using tag context:annotation-config from Spring's context namespace makes it turn on. Annotation makes development easier and faster.
You would want to work with Spring Boot Profiles. Split out the @EnableEurekaClient
to another @Configuration
class and also add an @Profile("eureka-client")
to the class. Then when starting up the application you can set a -Dspring.profiles.active=eureka-client
for the environments other than production.
Example:
@SpringBootApplication
@EnableCaching
public class MyApplication {
public static void main(String[] args) {
SpringApplication.run(MyApplication.class, args);
}
}
@Configuration
@EnableEurekaClient
@Profile("eureka-client")
public class EurekaClientConfiguration {
}
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