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This article mainly introduces the relevant knowledge of how to achieve nacos in SpringCloud service registration, the content is detailed and easy to understand, the operation is simple and fast, and it has a certain reference value. I believe you will gain something after reading this article on how to achieve nacos in SpringCloud service registration. Let's take a look.

As shown in the figure below, a series of interfaces are defined under the org.springframework.cloud.spring-cloud-commons package, including a series of serviceregistry specifications, which are implemented by calling the interface through the SPI mechanism.

In the META-INF/spring.factories file of the package, you can find the item AutoServiceRegistrationAutoConfiguration.class in the value whose EnableAutoConfiguration.class is key.

Take a look at this AutoServiceRegistrationAutoConfiguration configuration class:

Accordingly, the META-INF/spring.fatories under the com.alibaba.cloud.nacos package (located in the spring-cloud-starter-nacos-discovery jar package) has a nacos service registration configuration class, as shown below:

This NacosServiceRegistryAutoConfiguration configuration class defines the implementation class of the AutoServiceRegistration interface of SpringCloud above:

Package com.alibaba.cloud.nacos.registry . / * @ author xiaojing * @ author Mercy * / @ Configuration (proxyBeanMethods = false) @ EnableConfigurationProperties@ConditionalOnNacosDiscoveryEnabled@ConditionalOnProperty (value = "spring.cloud.service-registry.auto-registration.enabled", matchIfMissing = true) @ AutoConfigureAfter ({AutoServiceRegistrationConfiguration.class, AutoServiceRegistrationAutoConfiguration.class) NacosDiscoveryAutoConfiguration.class}) public class NacosServiceRegistryAutoConfiguration {@ Bean public NacosServiceRegistry nacosServiceRegistry (NacosDiscoveryProperties nacosDiscoveryProperties) {return new NacosServiceRegistry (nacosDiscoveryProperties) } @ Bean @ ConditionalOnBean (AutoServiceRegistrationProperties.class) public NacosRegistration nacosRegistration (ObjectProvider registrationCustomizers, NacosDiscoveryProperties nacosDiscoveryProperties, ApplicationContext context) {return new NacosRegistration (registrationCustomizers.getIfAvailable (), nacosDiscoveryProperties, context) } / * here This NacosAutoServiceRegistration is the implementation class of the AutoServiceRegistration interface * * / @ Bean @ ConditionalOnBean (AutoServiceRegistrationProperties.class) public NacosAutoServiceRegistration nacosAutoServiceRegistration (NacosServiceRegistry registry, AutoServiceRegistrationProperties autoServiceRegistrationProperties, NacosRegistration registration) {return new NacosAutoServiceRegistration (registry, autoServiceRegistrationProperties, registration) }}

The register () method in NacosAutoServiceRegistration starts to register the service, and the whole invocation process is as follows:

Continuing to trace the source, this registry () method is in the onApplicationEvent () method of the AbstractAutoServiceRegistration implements ApplicationListener class (onApplicationEvent- > bind- > start- > registey).

The heartbeat of the call defaults to 5 seconds. For more information, please see the buildBeatInfo () method in the BeatReactor class, where there is a beatInfo.setPeriod (instance.getInstanceHeartBeatInterval ()). Here we get a constant of 5s.

In addition, the implementation of the NamingClientProxy interface in the last step above is as follows, using the delegate pattern (delegate), also known as the proxy pattern. :

This is the end of the article on "how to implement nacos in SpringCloud service registration". Thank you for reading! I believe that everyone has a certain understanding of the knowledge of "how to realize nacos in SpringCloud service registration". If you want to learn more knowledge, you are welcome to follow the industry information channel.

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