framework/SpringCloud/客户端发现

客户端发现

EnableDiscoveryClient

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@Import(EnableDiscoveryClientImportSelector.class)
public @interface EnableDiscoveryClient {

	/**
	 * If true, the ServiceRegistry will automatically register the local server.
	 * @return - {@code true} if you want to automatically register.
	 */
	boolean autoRegister() default true;

}

EnableDiscoveryClientImportSelector

@Override
	public String[] selectImports(AnnotationMetadata metadata) {
		String[] imports = super.selectImports(metadata);

		AnnotationAttributes attributes = AnnotationAttributes.fromMap(
				metadata.getAnnotationAttributes(getAnnotationClass().getName(), true));

		boolean autoRegister = attributes.getBoolean("autoRegister");

		if (autoRegister) {
			List<String> importsList = new ArrayList<>(Arrays.asList(imports));
			importsList.add(
					"org.springframework.cloud.client.serviceregistry.AutoServiceRegistrationConfiguration");
			imports = importsList.toArray(new String[0]);
		}
		else {
			Environment env = getEnvironment();
			if (ConfigurableEnvironment.class.isInstance(env)) {
				ConfigurableEnvironment configEnv = (ConfigurableEnvironment) env;
				LinkedHashMap<String, Object> map = new LinkedHashMap<>();
				map.put("spring.cloud.service-registry.auto-registration.enabled", false);
				MapPropertySource propertySource = new MapPropertySource(
						"springCloudDiscoveryClient", map);
				configEnv.getPropertySources().addLast(propertySource);
			}

		}

		return imports;
	}

AutoServiceRegistrationConfiguration

@Configuration(proxyBeanMethods = false)
@EnableConfigurationProperties(AutoServiceRegistrationProperties.class)
@ConditionalOnProperty(value = "spring.cloud.service-registry.auto-registration.enabled",
		matchIfMissing = true)
public class AutoServiceRegistrationConfiguration {

}

AutoServiceRegistrationProperties

@ConfigurationProperties("spring.cloud.service-registry.auto-registration")
public class AutoServiceRegistrationProperties {

	/** Whether service auto-registration is enabled. Defaults to true. */
	private boolean enabled = true;

	/** Whether to register the management as a service. Defaults to true. */
	private boolean registerManagement = true;

	/**
	 * Whether startup fails if there is no AutoServiceRegistration. Defaults to false.
	 */
	private boolean failFast = false;

	public boolean isEnabled() {
		return this.enabled;
	}

	public void setEnabled(boolean enabled) {
		this.enabled = enabled;
	}

	public boolean isRegisterManagement() {
		return this.registerManagement;
	}

	public void setRegisterManagement(boolean registerManagement) {
		this.registerManagement = registerManagement;
	}

	@Deprecated
	public boolean shouldRegisterManagement() {
		return this.registerManagement;
	}

	public boolean isFailFast() {
		return this.failFast;
	}

	public void setFailFast(boolean failFast) {
		this.failFast = failFast;
	}

}

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• 本文作者： 忘忧症
• 本文链接： https://NepenthesZGW.github.io/2020/09/09/framework/SpringCloud/客户端发现/
• 版权声明： 本博客所有文章除特别声明外，均采用 MIT 许可协议。转载请注明出处！