de.bund.bva.isyfact.ueberwachung.autoconfigure.IsyHealthAutoConfiguration Maven / Gradle / Ivy
package de.bund.bva.isyfact.ueberwachung.autoconfigure;
import de.bund.bva.isyfact.ueberwachung.actuate.health.IsyCachingHealthContributorRegistry;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.boot.actuate.autoconfigure.endpoint.condition.ConditionalOnAvailableEndpoint;
import org.springframework.boot.actuate.health.HealthContributorRegistry;
import org.springframework.boot.actuate.health.HealthEndpoint;
import org.springframework.boot.actuate.health.HealthEndpointWebExtension;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.util.Assert;
import org.springframework.web.client.RestTemplate;
import de.bund.bva.isyfact.ueberwachung.actuate.health.IsyHealthTask;
import de.bund.bva.isyfact.ueberwachung.actuate.health.nachbarsystemcheck.NachbarsystemCheck;
import de.bund.bva.isyfact.ueberwachung.actuate.health.nachbarsystemcheck.NachbarsystemIndicator;
import de.bund.bva.isyfact.ueberwachung.actuate.health.nachbarsystemcheck.impl.NachbarsystemCheckImpl;
import de.bund.bva.isyfact.ueberwachung.config.NachbarsystemConfigurationProperties;
import de.bund.bva.isyfact.ueberwachung.config.NachbarsystemRestTemplateConfigurer;
/**
* Auto configuration for the {@link HealthEndpoint} and {@link HealthEndpointWebExtension} with a caching
* {@link HealthContributorRegistry}.
* These health endpoint replace the ones configured by spring and furthermore only activate when the usual
* health endpoint would have been created.
*/
@Configuration
@PropertySource("classpath:config/health.properties")
public class IsyHealthAutoConfiguration {
@Bean
@ConfigurationProperties(prefix = "isy.ueberwachung")
public NachbarsystemConfigurationProperties nachbarsystemConfigurationProperties() {
return new NachbarsystemConfigurationProperties();
}
@Bean
@ConditionalOnMissingBean
public NachbarsystemCheck nachbarsystemCheck(
NachbarsystemConfigurationProperties nachbarsystemConfigurationProperties) {
//we want our own RestTemplate to set Properties accordingly
//but it can be reused for all our subsequent requests (is threadsafe)
//build a RestTemplate based on nachbarsystemConfigurationProperties
RestTemplateBuilder templateBuilder = new RestTemplateBuilder();
templateBuilder = NachbarsystemRestTemplateConfigurer
.configureForNachbarSystemCheck(templateBuilder, nachbarsystemConfigurationProperties);
RestTemplate restTemplate = templateBuilder.build();
return new NachbarsystemCheckImpl(restTemplate);
}
@Bean
@ConditionalOnAvailableEndpoint(endpoint = HealthEndpoint.class)
public NachbarsystemIndicator nachbarsystemIndicator(NachbarsystemCheck nachbarsystemCheck,
NachbarsystemConfigurationProperties nachbarsystemConfigurationProperties) {
return new NachbarsystemIndicator(nachbarsystemCheck, nachbarsystemConfigurationProperties);
}
@Configuration
@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.SERVLET)
static class HealthEndpointConfiguration {
/**
* Creates {@link BeanPostProcessor} which wraps an instance of {@link HealthContributorRegistry} into an
* {@link IsyCachingHealthContributorRegistry}.
*/
@Bean
@ConditionalOnAvailableEndpoint(endpoint = HealthEndpoint.class)
public BeanPostProcessor isyHealthContributorRegistryPostProcessor() {
return new BeanPostProcessor() {
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) {
if (bean instanceof HealthContributorRegistry) {
return new IsyCachingHealthContributorRegistry((HealthContributorRegistry) bean);
}
return bean;
}
};
}
/**
* Creates a task which updates the cache in {@link IsyCachingHealthContributorRegistry} in fixed
* intervals.
*
* @param cachingRegistry The {@link IsyCachingHealthContributorRegistry} that is to be updated regularly.
* @return IsyHealthTask instance
*/
@Bean
@ConditionalOnAvailableEndpoint(endpoint = HealthEndpoint.class)
public IsyHealthTask isyHealthTask(HealthContributorRegistry cachingRegistry) {
Assert.isInstanceOf(IsyCachingHealthContributorRegistry.class, cachingRegistry);
return new IsyHealthTask((IsyCachingHealthContributorRegistry) cachingRegistry);
}
}
}