I am writing a java library module in Micronaut which has an httpClient. The idea is that my microservices will use this library as a jar dependency and use the httpClient.
Problem Statement : I want to configure my HttpClient without using application.yml.
Why don't I want to use application.yml ? - Because the microservices using this library will also have their own application.yml and when the jar is built, the two application.yml files will need to be merged. While technically possible, I don't want to use this approach.
Scenario - There is a boolean configuration property called micronaut.http.client.exception-on-error-status in micronaut that I need to set to false. I can easily set this in the application.yml as micronaut.http.client.exception-on-error-status=false but I want to avoid this approach due to aforementioned reasons. I want to set this in code.
I tried the following TWO approaches and neither of them worked.
Approach 1 - Using @ConfigurationProperties
I created the following MicronautHttpClientConfiguration.java class, but the property was NOT set.
import io.micronaut.context.annotation.ConfigurationProperties;
@ConfigurationProperties("micronaut.http.client")
public class MicronautHttpClientConfiguration {
private boolean exceptionOnErrorStatus;
public MicronautHttpClientConfiguration() {
this.exceptionOnErrorStatus = false;
}
public boolean isExceptionOnErrorStatus() {
return exceptionOnErrorStatus;
}
public void setExceptionOnErrorStatus(boolean exceptionOnErrorStatus) {
this.exceptionOnErrorStatus = exceptionOnErrorStatus;
}
}
Approach 2 - Using BeanCreatedEventListener
I created the following BeanCreatedEventListener to try and configure the HttpClient on creation, but was not able to.
import io.micronaut.context.event.BeanCreatedEvent;
import io.micronaut.context.event.BeanCreatedEventListener;
import io.micronaut.http.client.HttpClient;
import javax.inject.Singleton;
@Singleton
public class HttpClientBeanCreationEvent implements BeanCreatedEventListener<HttpClient> {
@Override
public HttpClient onCreated(BeanCreatedEvent<HttpClient> event) {
HttpClient httpClient = event.getBean();
// I have a handle on the HttpClient here, but not really sure how to set that property
return httpClient;
}
}
P.S. This problem is applicable to any HttpClient configuration (like read-timeout) or any default micronaut configuration for that matter.
UPDATE 1 : I am looking for a solution using @ConfigurationProperties as I realised that if I use approach 2 of BeanCreationEvent, Micronaut will never honour any configuration in application.yml (for this property) as BeanCreationEvent overrides all that. This will make it difficult for implementing microservices to override this property.
